WORM_AUTORUN.GOE

October 09, 2012
 Analysis by: Joseph Obed
 ALIASES:

VirTool:Win32/VBInject.AQ (Micorsoft); W32/Autorun.worm.fx (McAfee); Worm.Win32.AutoRun.fpc (Kaspersky)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This worm arrives via removable drives.

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

  TECHNICAL DETAILS

File Size:

167,988 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

29 Feb 2012

Arrival Details

This worm arrives via removable drives.

Installation

This worm drops the following files:

  • %System Root%\RESTORE\{random SID}\Desktop.ini

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

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

  • %System Root%\RESTORE\{random SID}\Ogard.exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It creates the following folders:

  • %System Root%\RESTORE\{random SID}

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Autostart Technique

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{67KLN5J0-4OPM-00WE-AAX5-77EF1D187322}
StubPath = "%System Root%\RESTORE\{random SID}\Ogard.exe"

Other System Modifications

This worm adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{67KLN5J0-4OPM-00WE-AAX5-77EF1D187322}

Propagation

This worm drops the following copy(ies) of itself in all removable drives:

  • {removable drive letter}:\RESTORE\{random SID}\Ogard.exe

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

The said .INF file contains the following strings:

[autorun]
open=RESTORE\{random SID}\Ogard.exe
icon=%SystemRoot%\system32\SHELL32.dll,4
action=Open folder to view files
shell\open=Open
shell\open\command=RESTORE\{random SID}\Ogard.exe
shell\open\default=1

Other Details

This worm connects to the following possibly malicious URL:

  • ogard.{BLOCKED}n.cc
  • Ogard.{BLOCKED}rk.biz
  • ogard.{BLOCKED}ils.net