Malware spam: "Purchase Order 0000035394 customer 09221" / "Clare Harding" [purchasing@carterspackaging.com]

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

From     "Clare Harding" [purchasing@carterspackaging.com]
Date     Fri, 30 Oct 2015 16:42:26 +0530
Subject     Purchase Order 0000035394 customer 09221

Purchase Order 0000035394

Dear customer,

Please find attached a copy of our order (reference 0000035394), your
reference .

If you have any questions regarding the purchase order please contact us
using the details below.

CLARE HARDING

Purchasing Manager
Carters Packaging Ltd, Packaging House, Wilson Way, Pool, Redruth, Cornwall,
TR15 3RT
Fax: +44 (0) 1209 315 600
www.carterspackaging.com

purchasing@carterspackaging.com

Attached is a file Purchase Order 0000035394.doc which apparently comes in several different versions, although all the samples I saw had the same attachment with a VirusTotal detection rate of 5/55 and which contained this malicious macro [pastebin].

Download locations for all the document versions (h/t to my source) are:

malajsie.webzdarma.cz/45y3f34f/7jh4wqd.exe
fa31.linux-hosting.de/45y3f34f/7jh4wqd.exe
ankarasogukhavadepo.com/45y3f34f/7jh4wqd.exe
selimkaucuk.com/45y3f34f/7jh4wqd.exe

It looks like this is saved as %TEMP%\httsser.exe and it has a VirusTotal detection rate of 5/55. That VirusTotal report and this reverse.it report show that it generates network traffic to:

221.132.35.56 (Ho Chi Minh City Post and Telecom Company, Vietnam)

I strongly recommend that you block access to that IP. The payload appears to be the Dridex banking trojan.

MD5s:
a5c52bd47f7fdfd54a2584a669eabe59
337435ffd7a94ce05bea59c0d312e5b3
48dde939b402533d37065bc606ed45a1
d3b4f459d089e6afd52d5650c31aa25e
e70ae9099a5e6daef41fd8dc15191756

Carters Packaging are on the ball and have put a big notice on their site, which is nice work.