TROJ_OFICLA.INV

April 14, 2011
 Analysis by: Karl Dominguez
 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 accesses websites to download files.

This Trojan arrives as attachment to mass-mailed email messages.

As of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

01 Apr 2011

Payload:

Downloads files

Arrival Details

This Trojan arrives as attachment to mass-mailed email messages.

Download Routine

This Trojan accesses the following websites to download files:

  • http://{BLOCKED}epof.ru/ohwgx3kiTh/document.doc
  • http://{BLOCKED}epof.ru/ohwgx3kiTh/load.php?file={random number}
  • http://{BLOCKED}epof.ru/ohwgx3kiTh/load.php?file=uploader
  • http://{BLOCKED}epof.ru/ohwgx3kiTh/load.php?file=grabbers

As of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

8.900

FIRST VSAPI PATTERN FILE:

7.944.04

FIRST VSAPI PATTERN DATE:

01 Apr 2011

Step 1

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

Step 2

Scan your computer with your Trend Micro product to delete files detected as TROJ_OFICLA.INV 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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