Analysis by: Michael Cabel
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This hacking tool may be dropped by other malware.

  TECHNICAL DETAILS

File Size: 12,136 bytes
File Type: SYS
Memory Resident: No
Initial Samples Received Date: 19 Jul 2011

Arrival Details

This hacking tool may be dropped by the following malware:

  • WORM_PRASH.A

NOTES:

This hacking tool is a utility used to patch and change the TCP/IP simultaneous concurrent connection attempt limit in Windows operating system dynamically. This utility, however, does not actually modify and patch the actual TCPIP.SYS system file. Instead, it directly accesses the memory to modify the connection limit.

  SOLUTION

Minimum Scan Engine: 8.900
SSAPI PATTERN File: 1.200.02
SSAPI PATTERN Date: 20 Jul 2011

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 HKTL_PRASH

Step 3

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