Analysis by: jont
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan connects to the web sites.

  TECHNICAL DETAILS

File Size: 36,864 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 09 Dec 2010
Payload: Connects to URLs/Ips

Installation

This Trojan drops the following copies of itself into the affected system:

  • %User Profile%\Local Settings\Temp\SVCH0ST.EXE

(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)

Autostart Technique

This Trojan drops the following shortcut pointing to its copy in the User Startup folder to enable its automatic execution at every system startup:

  • %User Startup%\Microsoft Help Center.lnk

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)

Other Details

This Trojan does the following:

  • It connects to the following URLs:
    • http://www.google.com/127.0.0.1/-hOrhAKnNYCSwMuTbHgmmK
    • http://www.aol.com/n/-hOrhAKnNYCSwMuTbHgmmK

  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

Search and delete this file

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files and folders in the search result. %User Startup%\Microsoft Help Center.lnk

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_AGENT.HPI. 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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