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Monday 19 August 2013

"You have received a secure message" spam / securedoc.zip

This fake Citi spam contains a malicious attachment:

Date:      Mon, 19 Aug 2013 20:24:27 +0000 [16:24:27 EDT]
From:      "secure.email@citi.com" [secure.email@citi.com]
Subject:      You have received a secure message

You have received a secure message
Read your secure message by opening the attachment, securedoc. You will be prompted to open (view) the file or save (download) it to your computer. For best results, save the file first, then open it with Internet Explorer.
If you have concerns about the validity of this message, please contact the sender directly. For questions please contact the Citi Secure Email Help Desk at (866) 535-2504.
First time users - will need to register after opening the attachment.
About Email Encryption - http://www.citi.com/citi/citizen/privacy/email.htm

Attached is a file securedoc.zip which in turn contains a malicious executable securedoc.exe which has a very low detection rate at VirusTotal of just 2/46. The Malwr analysis (and also ThreatExpert) shows that the file first connects to [donotclick]frankcremascocabinets.com/forum/viewtopic.php (a hijacked GoDaddy domain on (Secured Servers, US / Jolly Works Hosting, Philippines) as seen before here, and it then tries to downoad additional components from:


This second part has another very low VirusTotal detection rate of just 3/46. Malwr gives an insight into what the binary is doing, or alternatively you can look at the Comodo CAMAS report or ThreatExpert report

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