Analysis by: Nikko Tamana
 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This hacking tool may be manually installed by a user.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size: 2,860,568 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 09 Dec 2013
Payload: Drops files

Arrival Details

This hacking tool may be manually installed by a user.

Installation

This hacking tool drops the following file(s)/component(s):

  • %Program Files%\syn.exe - detected as HKTL_SYNFLOOD
  • %Program Files%\Udp.exe - detected as HKTL_UDPFLOOD
  • %Program Files%\Snail.exe - detected as HKTL_QQFLOOD
  • %Program Files%\NPS.exe - Non-malicious network monitoring software

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

Propagation

This hacking tool does not have any propagation routine.

Backdoor Routine

This hacking tool does not have any backdoor routine.

Information Theft

This hacking tool does not have any information-stealing capability.

NOTES:

Based on analysis of the codes, it has the following capabilities:

  • A user could use this hacking tool to launch any of three request flooding software and/or one network monitoring software by pressing the corresponding button in its interface.

It displays the following images:

It does not have rootkit capabilities.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine: 9.700
SSAPI PATTERN File: 1.466.12
SSAPI PATTERN Date: 13 Dec 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Remove malware/grayware files dropped/downloaded by HKTL_FLOODER

  • HKTL_SYNFLOOD
  • HKTL_UDPFLOOD
  • HKTL_QQFLOOD

Step 3

Identify and terminate files detected as HKTL_FLOODER

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Search and delete this file

[ Learn More ]
There may be some 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.
  • %Program Files%\NPS.exe

Step 5

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