Analysis by: Nikko Tamana
 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: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This worm 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: 28,672 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 22 Apr 2009

Arrival Details

This worm 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 worm drops the following copies of itself into the affected system and executes them:

  • %Windows%\services.exe

(Note: %Windows% is the Windows folder, which is usually C:\Windows.)

It drops the following component file(s):

  • %Windows%\adobe.bat
  • %Windows%\file.bat
  • %Windows%\_id.dat

(Note: %Windows% is the Windows folder, which is usually C:\Windows.)

Autostart Technique

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
services = "%Windows%\services.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
services = "%Windows%\services.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run
services = "%Windows%\services.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
services = "%Windows%\services.exe"

Other System Modifications

This worm adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\services

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\WindowsFirewall

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\WindowsFirewall\DomainProfile

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\WindowsFirewall\StandardProfile

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\services
del = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\WindowsFirewall\DomainProfile
EnableFirewall = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\WindowsFirewall\StandardProfile
EnableFirewall = "0"

Other Details

This worm connects to the following possibly malicious URL:

  • http://{BLOCKED}.{BLOCKED}.7.194/spm/s_config.php?ver=%7bvalues%7d&id=%7bvalues%7d
  • http://{BLOCKED}.{BLOCKED}.7.194/spm/s_alive.php?id=%7bvalues%7d
  • http://{BLOCKED}.{BLOCKED}.7.194/spm/get_id.php
  • {BLOCKED}7.{BLOCKED}0.yahoodns.net
  • aol.com
  • {BLOCKED}-01.{BLOCKED}x.aol.com
  • {BLOCKED}-02.{BLOCKED}x.aol.com
  • {BLOCKED}-03.mx.aol.com
  • {BLOCKED}-04.mx.aol com
  • google.com
  • {BLOCKED}1.{BLOCKED}x.l.google.com
  • {BLOCKED}3.{BLOCKED}x.l.google.com
  • {BLOCKED}2.{BLOCKED}x.l.google.com
  • {BLOCKED}4.{BLOCKED}x.l.google.com
  • {BLOCKED}x.{BLOCKED}.google.com
  • mail.com
  • {BLOCKED}0.{BLOCKED}x.com
  • {BLOCKED}1.{BLOCKED}x.com