TROJ_CVE20120158.F

August 26, 2015
 Analysis by: Anthony Joe Melgarejo
 ALIASES:

Exploit:Win32/CVE-2012-0158 (Microsoft), Trojan.Mdropper (Symantec), Exploit-CVE2012-0158.g (McAfee), Exploit.Win32.CVE-2012-0158.j (Kaspersky)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

41,982 bytes

File Type:

RTF

Initial Samples Received Date:

18 Aug 2015

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Download Routine

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

  • http://{BLOCKED}exe.com/72X/crossy_(8).exe
  • http://{BLOCKED}exe.com/72X/crossy_(8).exe?download_token=96d511fea8a499d2f8b8d04b3e1ed7cf60364180d211d37adb86f2a00fd59381

It saves the files it downloads using the following names:

  • %User Temp%\crossy_(8).exe

(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.)