JAVA_AUTORUN.AB

October 23, 2012

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 Analysis by: Nikko Tamana

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 ALIASES:

Trojan-Dropper.Agent (Ikarus), a variant of Java/Autorun.A worm (NOD32), Trojan.Agent.AURC (Bitdefender)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:

 DAMAGE POTENTIAL:

 DISTRIBUTION POTENTIAL:

 REPORTED INFECTION:

• 
  Threat Type: Trojan
• 
  Destructiveness: No
• 
  Encrypted: Yes
• 
  In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

This is the Trend Micro detection for Java class files with the capability of loading and executing bytes of data as Java threads.

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:

76,339 bytes

File Type:

Java Class

Initial Samples Received Date:

05 Oct 2012

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.

NOTES:

This is the Trend Micro detection for Java class files with the capability of loading and executing bytes of data as Java threads.

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.442.02

FIRST VSAPI PATTERN DATE:

05 Oct 2012

VSAPI OPR PATTERN File:

9.443.00

VSAPI OPR PATTERN Date:

06 Oct 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

Scan your computer with your Trend Micro product to delete files detected as JAVA_AUTORUN.AB. 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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