Analysis by: Cris Nowell Pantanilla
 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 dropped by other malware.

  TECHNICAL DETAILS

File Size: 1,353 bytes
File Type: VBS
Initial Samples Received Date: 22 Aug 2012

Arrival Details

This Trojan may be dropped by other malware.

NOTES:

Once executed, this Trojan searches for the file C:\TEMP\pAjsg.b64, extracts a file, and saves it as C:\TEMP\srHpY.exe. It then executes the extracted file. As a result, behavior of the extracted file is exhibited on the affected system.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 9.342.04
FIRST VSAPI PATTERN DATE: 22 Aug 2012
VSAPI OPR PATTERN File: 9.343.00
VSAPI OPR PATTERN Date: 23 Aug 2012

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

Search and delete this file

[ Learn More ]
There may be some component files 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.
  • C:\TEMP\pAjsg.b64
  • C:\TEMP\srHpY.exe

Step 3

Scan your computer with your Trend Micro product to delete files detected as VBS_SWRORTDEC.A. 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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