INF_OTORUN.WKMP

October 09, 2014
 Analysis by: Francis Xavier Antazo
 ALIASES:

INF/Autorun.Gen worm(NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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.

  TECHNICAL DETAILS

File Size:

161 bytes

Memory Resident:

Yes

Initial Samples Received Date:

02 Oct 2014

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.

Propagation

The said .INF file contains the following strings:

{garbage characters}
[AutoRun]
{garbage characters}
open=bakredm.bat
{garbage characters}
shell\open\Command=hiudstenw.bat _
{garbage characters}
shell\open\Default=1
shell\explore\Default=2
{garbage characters}
shell\explore\Command=vymxorepalt.bat _
{garbage characters}

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

11.188.02

FIRST VSAPI PATTERN DATE:

01 Oct 2014

VSAPI OPR PATTERN File:

11.189.00

VSAPI OPR PATTERN Date:

04 Oct 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

Scan your computer with your Trend Micro product to delete files detected as INF_OTORUN.WKMP. 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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