TROJ_PAWXNIC.YPOKDT

This Trojan may be downloaded from remote sites by other malware.

It does not have any propagation routine.

It does not have any backdoor routine.

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

It connects to certain websites to send and receive information. It gathers information and reports it to its servers.

Arrival Details

This Trojan may be downloaded from remote site(s) by the following malware:

• JS_PAWXNIC.C

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Download Routine

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

• https://{BLOCKED}eck.com/se/SoftGetJP.php

It saves the files it downloads using the following names:

• %User Temp%\{random filename}.exe - varying variants of TROJ_ROVNIX

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

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

Other Details

This Trojan connects to the following website to send and receive information:

• https://{BLOCKED}eck.com/se/SoftCheck.php?id={Product ID}&Ver={version number}&name={executable filename}&ilvl={Security Identifier (SID) Level}

It does the following:

• It checks for the following processes and Sleeps indefinitely if found running:
  • Python
  • bdagent.exe
  • bdwtxag.exe
• It will Sleep indefinitely if the OS gives an invalid version or if OS version is equal or lower than “Windows 2000”
• If run in Windows Vista or above, it will check on the following registry entries:
  • Software\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA
  • Software\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin
• It installs its own certificate in the system. This certificate will be used for SSL connection to encrypt when downloading malicious binary or reporting to C&C.
• It also uses SSLv3 to encrypt its data thus even if “GET” request method is used, no readable data can be found.

It gathers the following information and reports it to its servers:

• Product ID
• Malware Version number
• Executable filename of malware
• Security Identifier (SID) Level