Analysis by: Al Victor de Leon
ALIASES:

Ransom:Win32/Reveton.V (Microsoft), Trojan horse LockScreen.AW (AVG)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Dropped by other malware

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It arrives as a component bundled with malware/grayware packages.

It retrieves specific information from the affected system.

  TECHNICAL DETAILS

File Size: 95,027,928 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 29 May 2014
Payload: Steals information

Arrival Details

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

It arrives as a component bundled with malware/grayware packages.

Process Termination

This Trojan terminates the following processes if found running in the affected system's memory:

  • TASKMGR.EXE

Information Theft

This Trojan retrieves the following information from the affected system:

  • Malware version & SubID
  • OS version
  • System default language ID
  • System metrics (desktop width and height)
  • IP address, location and ISP
  • User name

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 10.836.05
FIRST VSAPI PATTERN DATE: 03 Jun 2014
VSAPI OPR PATTERN File: 10.837.00
VSAPI OPR PATTERN Date: 03 Jun 2014

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

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