TROJ_COOLTYPE.J

October 08, 2012
 Analysis by: jasperm
 ALIASES:

Microsoft : Exploit:Win32/CVE-2010-2883.A ; Fortinet : PDF/CoolType!exploit.CVE20102883 ; Sophos : Troj/PDFJs-NA

 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This malware, when manually extracted from its body, drops an .EXE file detected as TROJ_DLLSERV.MC.

This Trojan may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

However, due to errors in its code, it fails to perform its intended routine.

  TECHNICAL DETAILS

File Size:

44,227 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

29 Oct 2010

Payload:

Drops files

Arrival Details

This Trojan may be dropped by other malware.

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

Dropping Routine

This Trojan takes advantage of the following software vulnerabilities to drop malicious files:

  • http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2883

Other Details

However, due to errors in its code, it fails to perform its intended routine.

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.578.03

VSAPI PATTERN Date:

29 Oct 2010

VSAPI PATTERN Date:

10/29/2010 12:00:00 AM

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 TROJ_COOLTYPE.J. 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.

Step 3

Download and apply these security patches Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.  http://www.adobe.com/support/security/bulletins/apsb10-21.html


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