Analysis by: Christopher Daniel So
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

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

It does not have any propagation routine.

It does not have any downloading capability.

It steals certain information from the system and/or the user.

It may be used by other malware in performing their malicious routines.

  TECHNICAL DETAILS

File Size: 77,824 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 16 Dec 2011

Arrival Details

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

Propagation

This hacking tool does not have any propagation routine.

Download Routine

This hacking tool does not have any downloading capability.

Information Theft

This hacking tool steals the following information:

  • Internet Explorer 7 AutoComplete passwords
  • Mozilla FireFox saved passwords
  • Windows Credentials Management account credentials
  • Windows Protected Storage account credentials

Stolen Information

The stolen information is saved in the following file:

  • {malware path}\boot.dat

NOTES:

For Windows Protected Storage account credentials, this hacking tool steals the following specific information:

  • AutoComplete passwords
  • Hotmail account credentials
  • MSN Explorer account credentials
  • Outlook Express account credentials
  • Password protected site credentials

This hacking tool does not have rootkit capabilities. It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.648.03
FIRST VSAPI PATTERN DATE: 16 Dec 2011
VSAPI OPR PATTERN File: 8.649.00
VSAPI OPR PATTERN Date: 17 Dec 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

Search and delete this file

[ 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.
  • {malware path}\boot.dat

Step 3

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