Malware spam: "Debt #85533 , Customer Case Nr.: 878" leads to Teslacrypt

The details in these spam messages vary, with different reference numbers, sender names and dollar amounts. They all have malicious attachments, however.

From:    Lamar drury
Date:    13 March 2016 at 18:43
Subject:    Debt #85533 , Customer Case Nr.: 878

Dear Customer,

Despite our constant reminders, we would like to note that the mentioned debt #85533 for $826,87 is still overdue for payment.

We would appreciate your cooperation on this case and ask you to make the payment as soon as possible.

Unless the full payment is received by April 1st, 2016 this case will be transferred to the debt collection agency, will seriously damage your credit rating.
Please, find the attachment enclosed to the letter below.

We hope on your understanding.

Kind regards,
Finance Department
Lamar drury
878 N Davis St, Jacksonville,
FL 85533
Phone nr: 464-182-2340 

Attached is a ZIP file, that in the samples I saw starts with:

• doc_scan_
• money_
• payment_details_
• payment_
• warning_
• see_it_
• payment_scan_
• finance_
• warning_letter_
• report_
• transaction_
• details_
• incorrect_operation_
• confirmation_
• document_
• problem_
• financial_judgement_

 ..plus a random number. Inside are one to four malicious .js scripts, named in the following format:

• details_
• mail_
• post_
• Post_Parcel_Case_id00-
• Post_Parcel_Confirmation_id00-
• Post_Parcel_Label_id00-
• Post_Shipment_Confirmation_id00-
• Post_Shipment_Label_id00-
• Post_Tracking_Case_id00-
• Post_Tracking_Confirmation_id00-
• Post_Tracking_Label_id00-

The first three have a random string, the ones beginning with "Post" are followed by a random number and a #.  There are at least 22 unique scripts with the following MD5s:

05A44DF4418EA3F133A3708D4D829DC7
84A57069907726FFADE1DE7DDF6E34CD
6F9726C410B3FCE2FC1EAF75C5015BFC
97D6643DE12E4430CD11412D7917C8B2
ADB1CF98CD632B0E55358C045114ED6A
732314E639426E42B9342B1470798E02
AC2D6B033C943AF864F6A6E2A143E0CD
EA9BE11F3267D14CDF3A88786E2D69C8
E831A7247D30F9EB406A3F5AFCB63EDE
D5B74B58E9971BE84AA83B2E1D46B414
1A177FAF482FC924D2439F4111428D9F
0FB3CD12FB2BF4AC7ABB909383E2EEB8
A810DCD3DE5DA723940D3C44075D3314
F1B4DF8D16F81FFC543E252594DF5C03
3FE0BD9E25B3D0A36A898BE6E579780E
060990306E189A6022E2CCB041912588
6F963C39333F751D097D8DB8A2EEF525
DBF2B52926B5925E382BCF4024E5C8F7
4193D7D43CA5981EDB6E790ED568E5F3
AED7397352E43C0E2F0281AA2F4AACB2
ED8919841E31422C6318978BDAE5612B
C6D52DA9375DA4C33776D68407CC9B0D

These appear [1] [2] to download a malicious binary from one of the following locations:

ohelloguyff.com/70.exe
ohelloguyzzqq.com/85.exe?1

Of these, only the 85.exe download is working for me at the moment which is Teslacrypt ransomware. This has a detection rate of just 1/56.

The download locations have the following IP addresses:

185.35.108.109 (DA International Group Ltd, Bulgaria)
204.44.102.164 (Quadranet Inc, US)
54.212.162.6 (Amazon AWS, US)
192.210.144.130 (Hudson Valley Host / Colocrossing, US)
212.119.87.77 (Middle East Internet Company Limited, Saudi Arabia)
78.135.108.94 (Sadecehosting, Turkey)

Those IP addresses can be considered as evil, and they also host the following sites:

returnyourfiless.ru
pren874bwsdbmbwe.returnyourfiless.ru
spannflow.com
nnrtsdf34dsjhb23rsdf.spannflow.com
howareyouqq.com
ohelloguyqq.com
bonjovijonqq.com
witchbehereqq.com
invoiceholderqq.com
joecockerhereqq.com
fe3xr7qvyc.joecockerhereqq.com
lenovomaybenotqq.com
hellomississmithqq.com
thisisyourchangeqq.com
kvs5d8t3uc.thisisyourchangeqq.com
itsyourtimeqq.su
blizzbauta.com
q4bfgr7bdn4nrfsnmdf.blizzbauta.com
yesitisqqq.com
thisisitsqq.com
blablaworldqq.com
fromjamaicaqq.com
hellomydearqq.com
arendroukysdqq.com
itisverygoodqq.com
goonwithmazerqq.com
helloyoungmanqq.com
mafianeedsyouqq.com
mafiawantsyouqq.com
soclosebutyetqq.com
isthereanybodyqq.com
lenovowantsyouqq.com
ogxl0vcjum.thisisyourchangeqq.com
gutentagmeinliebeqq.com
hellomisterbiznesqq.com
ohelloguyff.com
ohelloguymyff.com
joecockerhereff.com
howisittomorrowff.com
thunicodenamespace.com
wioutpudforcontents.com
idendnsletbarcamednstwo.com
leadhoffmanclassapplico.com
insensitivityinterpreted.com
placegrantthenoticesmust.com
dns1.beforeyougogg.net
dns1.ohimyfriendff.net
dns2.ohimyfriendff.net
dns1.kaktotakvot.pw
dns2.martuswalmart.pw
dns2.beforeyougogg.net
dns2.microtexreglyt.net
microtexregyts.net
gdemoidomaine.info
daimoidomainemne.info
mydomainebizness.info


Recommended blocklist:
185.35.108.109
204.44.102.164
54.212.162.6
192.210.144.130
212.119.87.77
78.135.108.94