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ACM_BURSTED.AY

October 08, 2012
 Analysis by: Kathleen Notario
 PLATFORM:

Windows 2000, XP, 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 downloaded by other malware/grayware/spyware from remote sites. It may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

  TECHNICAL DETAILS

File Size:

2,078 bytes

File Type:

Other

Memory Resident:

No

Initial Samples Received Date:

05 Jun 2010

Arrival Details

This Trojan may be downloaded by other malware/grayware/spyware from remote sites.

It may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

Other Details

Based on analysis of the codes, it has the following capabilities:

  • Spreads by copying itself as ACADAPP.LSP to AutoCAD's working folder.
  • Executes this script when an AUTOCAD drawing file is opened
  • Reads the file BASE.DCL using AutoCAD’s search path.
  • Uses the said file (BASE.DCL) to search for another file named ACAD.LSP in the AutoCad support folder.
  • Checks if the file ACAD.LSP contains the string "acadapp"
  • Writes the string, "load "acadapp"" to the file (ACAD.LSP) if the said string is not found
  • Undefines the AutoCAD commands (EXPLODE,XREF,XBIND)to make them unavailable for use

  SOLUTION

Minimum Scan Engine:

8.900

FIRST VSAPI PATTERN FILE:

7.220.02

FIRST VSAPI PATTERN DATE:

05 Jun 2010

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 ACM_BURSTED.AY. 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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