Analysis by: Christopher Daniel So
ALIASES:

Hacktool.Rootkit (Symantec), W32/Agent.BIAI!tr.rtkt (Fortinet), Rkit/Agent.biai.1 (AntiVir)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware.

It is a component of other malware.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size: 10,752 bytes
File Type: PE
Memory Resident: No
Initial Samples Received Date: 27 Dec 2010

Arrival Details

This Trojan may be dropped by other malware.

Installation

This Trojan is a component of other malware.

Other Details

This Trojan requires its main component to successfully perform its intended routine.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.730.06
VSAPI PATTERN Date: 27 Dec 2010
VSAPI PATTERN Date: 12/27/2010 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 and note files detected as RTKT_AGENTT.FY

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the file detected as RTKT_AGENTT.FY

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.

Step 5

Scan your computer with your Trend Micro product to delete files detected as RTKT_AGENTT.FY. 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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