HKTL_UNDRM.GA

July 13, 2018
 Analysis by: John Anthony Banes
 ALIASES:

Riskware/Unwrapper (Fortinet), Win32/HackTool.Unwrapper.C (NOD32)

 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:

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:

1,515,355 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

22 Jun 2018

Payload:

Displays windows

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.

Installation

This Hacking Tool drops the following files:

  • %User Temp%\temp.zip
  • %User Temp%\Automate unDRM v2.0.msi
  • %User Temp%\AzuriX.skf
  • %User Temp%\SkinCrafterDll.dll
  • %System Root%\Users\Public\Desktop\DecryptIt.lnk
  • %System%\gdiplus.dll
  • %Windows%\{Random alphanumeric characters}.msi
  • %Program Files%\Automate unDRM\uninstall.exe
  • %Program Files%\Automate unDRM\asfbin\asfbin.exe
  • %Program Files%\Automate unDRM\drm2wmv\drm2\074DSQ.bmp
  • %Program Files%\Automate unDRM\drm2wmv\drm2\drm2-i.key
  • %Program Files%\Automate unDRM\drm2wmv\drm2wmv.exe
  • %Program Files%\Automate unDRM\drmdbg\drmdbg.exe
  • %Program Files%\Automate unDRM\DecryptIt.exe
  • %Program Files%\Automate unDRM\DecryptIt.ini
  • %Program Files%\Automate unDRM\Automate.exe
  • %Program Files%\Automate unDRM\Readme.txt
  • %System Root%\Users\Public\Desktop\Automate unDRM.lnk
  • %Start Menu%\Programs\Automate unDRM\Readme.lnk
  • %Start Menu%\Programs\Automate unDRM\DecryptIt.lnk
  • %Start Menu%\Programs\Automate unDRM\Uninstall Automate unDRM.lnk

(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.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu 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 creates the following folders:

  • %Program Files%\Automate unDRM

(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)

Other System Modifications

This Hacking Tool adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
WMVFile\shell\Automate unDRM

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ASFFile\shell

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ASFFile\shell\Automate unDRM

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
wmafile\shell

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
wmafile\shell\Automate unDRM

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
WMVFile\shell

It adds the following registry entries as part of its installation routine:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
InProgress
(Default) = "%Windows%\Installer\{random alphanumeric characters}.ipi"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
WMVFile\shell\Automate unDRM\
command
(Default) = "%Program Files%\Automate UnDRM\Automate.exe" "%1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ASFFile\shell\Automate unDRM\
command
(Default) = "%Program Files%\Automate UnDRM\Automate.exe" "%1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
wmafile\shell\Automate unDRM\
command
(Default) = "%Program Files%\Automate UnDRM\Automate.exe" "%1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
Folders
%Program Files%\Automate unDRM\ = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
Folders
%Program Files%\Automate unDRM\asfbin\ = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
Folders
%Program Files%\Automate unDRM\drm2wmv\drm2\ = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
Folders
%Program Files%\Automate unDRM\drm2wmv\ = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
Folders
%Program Files%\Automate unDRM\drmdbg\ = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
Folders
%Start Menu%\Programs\Automate unDRM\ = ""

Other Details

This Hacking Tool does the following:

  • Upon execution of DecryptIt.exe, it displays the following window:
  • It attempts to remove DRM protection of Windows Media Files. (WMA, WMV and ASF files)

  SOLUTION

Minimum Scan Engine:

9.850

SSAPI PATTERN File:

1.977.00

SSAPI PATTERN Date:

28 Jun 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

Remove HKTL_UNDRM.GA by using its own Uninstall option

[ Learn More ]
To uninstall the grayware process

Step 4

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