➔
search
✕

TROJ_KILLAV.CIA

October 09, 2012
 Analysis by: Abraham Latimer Camba
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It uses a file name similar to a legitimate file to pass as a legitimate file.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not drop any other file.

It does not have any downloading capability.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size:

5,072 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

31 May 2012

Payload:

Connects to URLs/IPs

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan uses a file name similar to a legitimate file to pass as a legitimate file.

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Dropping Routine

This Trojan does not drop any other file.

Download Routine

This Trojan does not have any downloading capability.

Information Theft

This Trojan does not have any information-stealing capability.

Other Details

This Trojan requires the following additional components to properly run:

  • %System Root%\Documents and Settings\All Users\data.db

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

NOTES:

This Trojan checks which process executed it. It terminates itself if it is executed by the following processes:

  • avp.exe
  • svchost.exe

It also terminates itself if it is not executed by the process EXPLORER.EXE. It searches for the file %System Root%\Documents and Settings\All Users\data.db and loads the said file in order to create a thread performing its malicious routines. It also executes the legitimate file %System%\wdmaud.drv.

This Trojan may connect to the URL

  • liyanyanzy.{BLOCKED}2.org

This Trojan does not have rootkit capabilities.

This Trojan does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.156.04

FIRST VSAPI PATTERN DATE:

31 May 2012

VSAPI OPR PATTERN File:

9.157.00

VSAPI OPR PATTERN Date:

31 May 2012

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 TROJ_KILLAV.CIA

Step 3

Identify and terminate files detected as TROJ_KILLAV.CIA

[ Learn More ]
  1. 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.
  2. 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 these files

[ 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.  
  • %System Root%\Documents and Settings\All Users\data.db

Step 5

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


Did this description help? Tell us how we did.