HKTL_WIN7ACTIVATION.GA

May 17, 2018
 Analysis by: Wilbert Vidal
 ALIASES:

HackTool:Win32/Keygen (Microsoft); Keygen (PUA) (Sophos AV)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted:

  • 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.

  TECHNICAL DETAILS

File Size:

713,396 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

14 May 2018

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.

Installation

This Hacking Tool adds the following folders:

  • %User Temp%\RarSFX0\data
  • %User Temp%\RarSFX0

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It drops the following files:

  • %User Temp%\RarSFX0\data\READ_ME.txt
  • %User Temp%\RarSFX0\data\lang.ini
  • %User Temp%\RarSFX0\data\bootinst.exe
  • %User Temp%\RarSFX0\data\bootrest.exe
  • %User Temp%\RarSFX0\WIN7 Activation.exe
  • %User Temp%\RarSFX0\data\Certificate.xrm-ms
  • %User Temp%\RarSFX0\data
  • %User Temp%\RarSFX0\__tmp_rar_sfx_access_check_28933046
  • %System Root%\grldr

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other System Modifications

This Hacking Tool deletes the following files:

  • %User Temp%\RarSFX0\__tmp_rar_sfx_access_check_28933046

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

  SOLUTION

Minimum Scan Engine:

9.850

SSAPI PATTERN File:

1.951.04

SSAPI PATTERN Date:

16 May 2018

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

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %User Temp%\RarSFX0
  • %User Temp%\RarSFX0\data

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.  
  • %User Temp%\RarSFX0\data\READ_ME.txt
  • %User Temp%\RarSFX0\data\lang.ini
  • %User Temp%\RarSFX0\data\bootinst.exe
  • %User Temp%\RarSFX0\data\bootrest.exe
  • %User Temp%\RarSFX0\WIN7 Activation.exe
  • %User Temp%\RarSFX0\data\Certificate.xrm-ms
  • %User Temp%\RarSFX0\data
  • %User Temp%\RarSFX0\__tmp_rar_sfx_access_check_28933046
  • %System Root%\grldr

Step 5

Scan your computer with your Trend Micro product to delete files detected as HKTL_WIN7ACTIVATION.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 the following Trend Micro Support pages for more information:


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