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Wednesday 24 December 2014

Malware spam: Rhianna Wellings / Rhianna@teckentrupdepot.co.uk / Signature Invoice 44281

Teckentrup Depot UK is a legitimate UK company, but these emails are not from Teckentrup Depot and they contain a malicious attachment. Teckentrup Depot has not been hacked, their database has not been compromised, and they are not responsible for this in any way.

From:    Rhianna Wellings [Rhianna@teckentrupdepot.co.uk]
Date:    24 December 2014 at 07:54
Subject:    Signature Invoice 44281

Your report is attached in DOC format.

To load the report, you will need the Microsoft® Word® reader, available to download at http://www.microsoft.com/
Attached is a malicious Word document called Signature Invoice.doc which comes in two different versions, both of which are undetected by AV vendors [1] [2]. Each one contains a different macro [1] [2] [pastebin] which then downloads an additional component from one of these two locations:


The file is saved into the location %TEMP%\1V2MUY2XWYSFXQ.exe and currently has a VirusTotal detection rate of just 4/56. The ThreatExpert report shows traffic to the following IPs: (1&1 Internet, US) (Strato AG, Germany) (HKBN, Hong Kong)

According to the Malwr report it also drops a malicious DLL with a detection rate of 24/56, detected as the Dridex banking trojan.

Recommended blocklist:


Unknown said...
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Unknown said...

Conrad. What do you use to analyse these macros and get the download locations of the Dridex

Conrad Longmore said...

@Derek, you can extract the macro with OfficeMalScanner and then it is a question of deobfuscating the VB script. Because it's an interpreted language, that can be fairly easy (you can use its own code against it).