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WORM_AUTORUN.ANZ

May 20, 2013
 ALIASES:

Worm:Win32/Autorun.AAD (Microsoft); Worm.Win32.AutoRun.hfo (Kaspersky); Worm.Win32.AutoRun (Sunbelt); Worm/Generic.BJZR (AVG)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This worm 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:

5,601,627 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

20 May 2013

Arrival Details

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

Installation

This worm creates the following folders:

  • %User Temp%\par-Wilbert
  • %User Temp%\par-Wilbert\cache-5140db9ec401b58e1f0692b615ee11761ebc0e18

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

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

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %User Temp%\par-Wilbert
  • %User Temp%\par-Wilbert\cache-5140db9ec401b58e1f0692b615ee11761ebc0e18

Step 3

Scan your computer with your Trend Micro product to delete files detected as WORM_AUTORUN.ANZ. 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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