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TROJ_FAKEAV.MPD

May 20, 2013
 Analysis by: Anthony Joe Melgarejo
 ALIASES:

Troj/FakeAV-GPL (Sophos)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • 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:

852,480 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

17 May 2013

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.

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Internet Security = "{Malware path and file name}.exe"

Other System Modifications

This Trojan adds the following registry entries:

HKEY_CURRENT_USER\Software\393CF9648D3D8BB3900DA2F0A17DEB0A
FRun = "0"

HKEY_CURRENT_USER\Software\393CF9648D3D8BB3900DA2F0A17DEB0A
O`ld = "Houdsodu!Rdbtshux"

HKEY_CURRENT_USER\Software\393CF9648D3D8BB3900DA2F0A17DEB0A
Q`ui = "{random string}"

It adds the following registry keys as part of its installation routine:

HKEY_CURRENT_USER\Software\393CF9648D3D8BB3900DA2F0A17DEB0A

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}e.bill3dpayusauto.com:443
  • http://{BLOCKED}rtal360.com/404.php?id=48
  • http://{BLOCKED}tsecurity.com/buynow.php?bid=48
  • http://{BLOCKED}e.bill3dpayusauto.com:443
  • http://{BLOCKED}echeck24.com/activate/activate.php?id=%uid%&mail=%email%&order_id=%order%
  • http://{BLOCKED}einternational.com/support.php
  • http://{BLOCKED}yhelpsupport.com