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TROJ_MEPAOW.IC

October 09, 2012
 Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • 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:

708,767 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

10 Oct 2011

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.

Installation

This Trojan drops the following files:

  • %Program Files%\Common Files\ActiveSync\silhum.dll
  • %System%\MSWINSCK.ocx
  • %System%\soundnate.wav
  • %System%\zlib.dll

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It drops the following copies of itself into the affected system:

  • %Program Files%\Common Files\ActiveSync\.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

It creates the following folders:

  • %Program Files%\Common Files\ActiveSync

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://blog.{BLOCKED}r.com
  • http://{BLOCKED}s.naver.net