ALIASES:

Worm:Win32/Koobface.gen!D (Microsoft); W32/Koobface.worm.gen.e (McAfee); W32.Koobface.B (Symantec); Net-Worm.Win32.Koobface.aiu (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Win32.Worm.Koobface.ARR (FSecure)

 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 on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes itself after execution.

  TECHNICAL DETAILS

Tamaño del archivo 27,648 bytes
Tipo de archivo EXE
Residente en memoria No
Fecha de recepción de las muestras iniciales 29 Jan 2013

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.

Dropping Routine

This worm drops the following files:

  • x2.dat
  • %Windows%\ld10.exe
  • %Windows%\2232132.bat

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

Other Details

This worm deletes itself after execution.

This report is generated via an automated analysis system.

  SOLUTION

Motor de exploración mínimo 9.300

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • x2.dat
  • %Windows%\ld10.exe
  • %Windows%\2232132.bat

Step 3

Scan your computer with your Trend Micro product to delete files detected as WORM_KOOBFACE.W. 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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