Trojan.WSF.SMOKELOADER.AA

This Trojan does not have any propagation routine.

It does not have any backdoor routine.

As of this writing, the said sites are inaccessible.

It does not have any information-stealing capability.

Installation

This Trojan adds the following processes:

• If Drive C: is greater than 50GB:
  • %System%\cmd.exe /c powErshEll -nop -w hiddEn -Ep bypass -Enc {Base64 Command}
  • powErshEll -nop -w hiddEn -Ep bypass -Enc {Base64 Command}
  • If file is downloaded successfully:
    • %User Temp%\oBuf.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Rootkit Capabilities

This Trojan does not have rootkit capabilities.

Download Routine

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

• http://{BLOCKED}gazineforanimalsunicum.ru/download/svc.exe

It saves the files it downloads using the following names:

• %User Temp%\oBuf.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

As of this writing, the said sites are inaccessible.

Information Theft

This Trojan does not have any information-stealing capability.

Other Details

This Trojan does the following:

• It does not proceed with its routine if Drive C: is less than 50GB.

It does not exploit any vulnerability.