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HKTL_BUILDSTEAL.GB

December 05, 2015
 Analysis by: Janus Agcaoili
 ALIASES:

HackTool.Builder (Malwarebytes), SPR/Zayoh.B (Avira)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


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.

It uses a user interface (UI).

  TECHNICAL DETAILS

File Size:

1,593,344 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

02 Apr 2015

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.

Other Details

This hacking tool uses the following user interfaces (UIs):

It does the following:

  • Generate a password stealing executable file with the interaction of a user

NOTES:

The user is able to customize the following:

  • URL where the stole information will be sent
  • E-mail address where the stolen information will be sent
  • Icon to be use by the generated file
  • Whether or not the generated file can download other files specified by the user
  • Whether or not the generated file runs at startup
  • What registry name to use
  • Whether or not the generated file deletes itselft after execution
  • What kind of information to steal based on the given choices
  • Change the assembly information of the generated file (like Description, Company etc)
  • Error message to be displayed by the generated file

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

1.510.03

FIRST VSAPI PATTERN DATE:

14 May 2014

VSAPI OPR PATTERN File:

1.511.00

VSAPI OPR PATTERN Date:

15 May 2014

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

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