TROJ_JORIK.SM3

June 11, 2013
 Modified by: Erika Bianca Mendoza
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

As of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

20,480 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

14 Dec 2011

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

Installation

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

  • yUo9Cj1Io

It is injected into the following processes running in memory:

  • explorer.exe

Download Routine

This Trojan accesses the following websites to download files:

  • http://{BLOCKED}dsa.monbe.be/showthread.php?t=202876

As of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.644.06

FIRST VSAPI PATTERN DATE:

14 Dec 2011

VSAPI OPR PATTERN File:

8.645.00

VSAPI OPR PATTERN Date:

15 Dec 2011

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

Scan your computer with your Trend Micro product and note files detected as TROJ_JORIK.SM3

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the file detected as TROJ_JORIK.SM3

[ Learn More ]

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_JORIK.SM3. 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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