Analysis by: Roland Marco Dela Paz
ALIASES:

Microsoft : Worm:Win32/Verst.B; Kaspersky : Trojan.Win32.Agent2.luh

 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware.

It exports functions used by other malware.

  TECHNICAL DETAILS

File Size: 23,552 bytes
File Type: DLL
Memory Resident: No
Initial Samples Received Date: 16 Feb 2011

Arrival Details

This Trojan may be dropped by the following malware:

  • WORM_AUTORUN.ZLK

Rootkit Capabilities

This Trojan is used by other malware for its rootkit functionalities.

Other Details

This Trojan exports functions used by other malware.

It does the following:

  • Its rootkit capabilities enables it to hide processes and files of its mother component.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 07.838.12
VSAPI PATTERN Date: 16 Feb 2011
VSAPI PATTERN Date: 2/16/2011 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

Remove malware files dropped/downloaded by RTKT_VERST.ZLK

Step 3

Scan your computer with your Trend Micro product and note files detected as RTKT_VERST.ZLK

Step 4

Restart in Safe Mode

[ Learn More ]

Step 5

Search and delete the file detected as RTKT_VERST.ZLK

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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.


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