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PE_VIRUT.J-1

October 08, 2012
 Analysis by: Karl Dominguez
 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


This file infector infects by overwriting certain sections of target files with its code. It infects by inserting its code to unused space in host files. It infects by appending its code to target host files.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

21 Aug 2009

Installation

This file infector adds the following mutexes to ensure that only one of its copies runs at any one time:

  • VtSect

File Infection

This file infector infects the following file types:

  • .EXE
  • .SCR

It infects by overwriting certain sections of target files with its code.

It infects by inserting its code to unused space in host files.

It infects by appending its code to target host files.

It avoids infecting files that contain the following strings in their names:

  • PSTO
  • WC32
  • WCUN
  • WINC

Backdoor Routine

This file infector connects to any of the following IRC server(s):

  • proxim.ircgalazy.pl

Other Details

This file infector contains the following strings in its code:

  • O noon of life! O time to celebrate!
  • O summer garden!
  • Relentlessly happy and expectatnt, standing: -
  • Watching all day and night, for friends I wait:
  • Where are you, friends? Come! It is time! It's late!

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI OPR PATTERN File:

6.381.00

VSAPI OPR PATTERN Date:

21 Aug 2009

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

Identify and terminate files detected as PE_VIRUT.J-1

[ 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 3

Scan your computer with your Trend Micro product to clean files detected as PE_VIRUT.J-1. 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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