Analysis by: Jeanne Jocson
 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

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 may be manually installed by a user.

  TECHNICAL DETAILS

File Size: 192512 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 15 May 2014

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.

It may be manually installed by a user.

NOTES:

It has the capability to build and drop an info-stealer file with the following options:

  • Anti VMWare
  • Anti Sandbox
  • Anti Anubis
  • Disable Regedit
  • Melt
  • Anti Debugger
  • Disable CMD
  • Disable Task Manager
  • Kaspersky Detection
  • Fake Error

Note: It requires the file {malware path}\stub.dll to build and drop the info-stealer file.

The dropped file steals information from the following applications:

  • MSN Messenger
  • Windows Messenger (In Windows XP)
  • Windows Live Messenger (In Windows XP And Vista)
  • Yahoo Messenger (Versions 5.x and 6.x)
  • Google Talk
  • ICQ Lite 4.x/5.x/2003
  • AOL Instant Messenger v4.6 or below, AIM 6.x, and AIM Pro.
  • Trillian
  • Miranda
  • GAIM/Pidgin
  • MySpace IM
  • PaltalkScene
  • Digsby
  • Outlook Express
  • Microsoft Outlook 2000 (POP3 and SMTP Accounts only)
  • Microsoft Outlook 2002/2003/2007 (POP3, IMAP, HTTP and SMTP Accounts)
  • Windows Mail
  • Windows Live Mail
  • IncrediMail
  • Internet Explorer 7.0
  • Eudora
  • Netscape 6.x/7.x (If the password is not encrypted with master password)
  • Mozilla Thunderbird (If the password is not encrypted with master password)
  • Group Mail Free
  • Yahoo! Mail - If the password is saved in Yahoo! Messenger application.
  • Hotmail/MSN mail - If the password is saved in MSN/Windows/Live Messenger application.
  • Gmail - If the password is saved by Gmail Notifier application, Google Desktop, or by Google Talk.
  • Login passwords of remote computers on your LAN.
  • Passwords of mail accounts on exchange server (stored by Outlook 2003)
  • Password of MSN Messenger / Windows Messenger accounts
  • Internet Explorer 7: passwords of password-protected Web sites (Basic Authentication or Digest Access Authentication)
  • The item name of IE7 passwords that begin with Microsoft_WinInet prefix.
  • The passwords stored by Remote Desktop 6.
  • Firefox
  • WirelessKeyView Version 1.01 and Version 1.00
  • Steam

It also has the capability of Decoding and Encoding in Base-64.

  SOLUTION

Minimum Scan Engine: 9.800
SSAPI PATTERN File: 1.511.00

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Identify and terminate files detected as HKTL_MALBUILD.GA

[ Learn More ]
  1. For Windows 98 and ME users, 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

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