Analysis by: JessaD
ALIASES:

W32.Looked.P (Symantec); Virus:Win32/Viking.T (Microsoft)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: File infector

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Canal de infección Propagates via network shares

.

This file infector may be dropped by other malware.

It injects its dropped file/component to specific processes.

It prepends its codes to target files.

As of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

Tamaño del archivo 33,930 bytes
Tipo de archivo PE
Compresión de archivo UpackByDwing
Residente en memoria Yes
Fecha de recepción de las muestras iniciales 26 May 2010

Arrival Details

This file infector may be dropped by the following malware:

  • PE_LOOKED.AAA

Installation

This file infector drops the following file(s)/component(s):

  • %Windows%\Dll.dll - detected as TROJ_LOOKED.GX

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

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

  • %Windows%\rundl132.exe

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

It injects its dropped file/component to the following processes:

  • explorer.exe
  • iexplore.exe

Autostart Technique

This file infector modifies the following registry entries to ensure it automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
load = %Windows%\rundl132.exe

(Note: The default value data of the said registry entry is {blank}.)

Other System Modifications

This file infector adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Soft\
DownloadWWW
auto = 1

File Infection

This file infector infects the following file types:

  • .EXE

It prepends its codes to target files.

It searches for target files in the following drives:

  • C to Z

It avoids infecting folders containing the following strings:

  • system
  • system32
  • windows
  • Documents and Settings
  • System Volume Information
  • Recycled
  • winnt
  • \Program Files\
  • Windows NT
  • WindowsUpdate
  • Windows Media Player
  • Outlook Express
  • Internet Explorer
  • ComPlus Applications
  • NetMeeting
  • Common Files
  • Messenger
  • InstallShield Installation Information
  • Microsoft Frontpage
  • Movie Maker
  • MSN Gaming Zone

Process Termination

This file infector terminates the following services if found on the affected system:

  • Kingsoft AntiVirus Service

It terminates the following processes if found running in the affected system's memory:

  • EGHOST.EXE
  • MAILMON.EXE
  • KAVPFW.EXE
  • KAVPFW.EXE
  • IPARMOR.EXE
  • Ravmond.EXE
  • regsvc.exe
  • RavMon.exe
  • mcshield.exe
  • KVMonXP.KXP
  • KRegEx.exe
  • KVXP.KXP

Download Routine

This file infector accesses the following websites to download files:

  • http://www.god74.com/mm/1.exe
  • http://www.god74.com/mm/2.exe
  • http://www.god74.com/mm/3.exe
  • http://www.god74.com/mm/4.exe
  • http://www.god74.com/mm/5.exe
  • http://www.god74.com/mm/6.exe
  • http://www.god74.com/mm/7.exe
  • http://www.god74.com/mm/8.exe
  • http://www.god74.com/mm/9.exe

As of this writing, the said sites are inaccessible.

NOTES:
Infected files are detected as PE_LOOKED.AAA. It closes windows related to the following processes:

  • avp.exe
  • RavMon.exe
This malware attempts to propagate via network shares. It uses administrator as its user name to gain access to the following default shares:
  • ADMIN$
  • IPC$
Once successful, it attempts to execute its dropped copy. It also drops _DESKTOP.INI in every folder it traverses. The said file contains the date of infection.

  SOLUTION

Motor de exploración mínimo 8.900
Primer archivo de patrones de VSAPI 7.198.02
Primera fecha de publicación de patrones de VSAPI 26 May 2010

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Remove malware files dropped/downloaded by PE_LOOKED.AAA-O

Step 3

Identify and terminate files detected as PE_LOOKED.AAA-O

[ Learn More ]
  1. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Soft\DownloadWWW
    • auto = 1

Step 5

Restore this modified registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • From: load = %Windows%\rundl132.exe
      To: load = {blank}

Step 6

Scan your computer with your Trend Micro product to delete files detected as PE_LOOKED.AAA-O. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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