Analysis by: Christopher Daniel So
 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

  TECHNICAL DETAILS

File Size: 1,118 bytes
File Type: HTML, HTM
Memory Resident: No
Initial Samples Received Date: 19 Aug 2010
Payload: Downloads files

Download Routine

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

  • Microsoft Internet Explorer Invalid Pointer Reference Remote Code Execution

After successfully exploiting the said vulnerability, this malware connects to the following URLs to possibly download other malicious files:

  • http://{BLOCKED}ic.net:6668/Down/my/124.exe - detected as TROJ_AGENT.SMCD

Other Details

More information on this vulnerability can be found below:

  • http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0806

  SOLUTION

Minimum Scan Engine: 8.900

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

Remove malware files dropped/downloaded by JS_COSMU.AA

    TROJ_AGENT.SMCD

Step 3

Close all opened browser windows

Step 4

Scan your computer with your Trend Micro product to delete files detected as JS_COSMU.AA. 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 5

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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0806


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