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Thursday 28 July 2016

Malware spam: "Please check the attached invoice and confirm me if I sent the right data" leads to Locky

This fake financial spam leads to malware:

Subject:     Invoice
From:     Kendall Harrison (Harrison.59349@chazsmedley.com)
Date:     Thursday, 28 July 2016, 10:33

Hello,

Please check the attached invoice and confirm me if I sent the right data

Yours sincerely,
Kendall Harrison

320907cb16fbe856062a081d4f925b39cb3f007b8818d40dd3 
The name of the sender and the hexadecimal number at the bottom varies. Attached is a randomly-named ZIP file which in the sample I analysed contains a malicious .wsf script beginning with the word "redacted".

The Malwr analysis for the partially deobfuscated script and this Hybrid Analysis show this particular sample downloading from:

83.235.64.44/~typecent/xvsb58

This drops a malicious Locky ransomware binary with a detection rate of 7/55. Analysis of this binary is pending.

UPDATE

Thank you to my usual source for this analysis. The download locations for the various scripts are:

01ad681.netsolhost.com/7j0jlq3
12-land.co.jp/vrquj
178.78.87.8/xjzhm
83.235.64.44/~typecent/xvsb58
arabian-horse-highlights.homepage.t-online.de/kzm2n
bajasae.grupos.usb.ve/4y13jg1
baldwinhistory.portalstream.net/rqbljjx
billy-hanjo.homepage.t-online.de/2r713u
blanquerna.eresmas.net/tt2e8s4
burkersdorf.eu/8y5n3f
campustouren.de/k6tkk
christilipp.com/cnb0o
creartnet.com/5ylah
dev12.gammat.net/oxg2m3
exclusive-closet.com/fld2h8
fremdesland.x.fc2.com/iya9qt
gkxxx.x.fc2.com/dxfom
idd00dnu.eresmas.net/wdmlqe
it4cio.servicos.ws/u8c3x
jozefow.cba.pl/ouini6
karumaengeki.web.fc2.com/f3ry4
kbridge.web.fc2.com/hj1fr
lacrima.ru/hvn1c
luzdevelas.es/9belfi
mbiurorachunkowe.republika.pl/6t6sz
motorkote.org/0gq654
okhtinka.ru.hoster-ok.com/qdiqooeo
papamama.com.sg/zhbepez
piggy.riffle.be/~gniff/r9bzz
robertstefan.home.ro/pycz4o
sav-krelingen.de/36r3qe8
schefman.info/snjqz
slit.xxxxxxxx.jp/l58gd3p
sv-r.ru/btawsoc
www.acheri.it/magii
www.andyschwietzer.homepage.t-online.de/r3a0tw
www.chantale.force9.co.uk/lsyeuw
www.clefranceitalie.org/cj937f7l
www.inari.net/ov5u1k
www.kan-therm.ru/qara9i
www.marinoderosas.com/59nue8uo
www.panella.org/eo9lk
www.rgtalp14.it/ykb84n40
www.ruyssinck-demeyer.be/v4xo5r28
www.schwarzer-baer-kastl.de/tt7ea
www.uasm.de/qwqiyk
yourparty.cba.pl/5avhe
zckupila.republika.pl/m6w6uu5f


C2 locations:

178.62.232.244/upload/_dispatch.php (Digital Ocean, Netherlands)
193.124.180.6/upload/_dispatch.php (Marosnet, Russia)
139.59.147.0/upload/_dispatch.php (Digital Ocean, Germany)


Recommended blocklist:
178.62.232.244
193.124.180.6
139.59.147.0


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