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CRCK_PASSREC

June 02, 2014
 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Cracking Application

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This cracking application 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:

843,780 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

02 Jun 2014

Arrival Details

This cracking application 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 cracking application creates the following folders:

  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\Wilbert
  • %User Profile%\LOCALS~1
  • %User Temp%\RarSFX0

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

Other System Modifications

This cracking application adds the following registry keys:

HKEY_CURRENT_USER\Software\Elcom

HKEY_CURRENT_USER\Software\Elcom\
Advanced IM Password Recovery

HKEY_CURRENT_USER\Software\Elcom\
Advanced IM Password Recovery\Registration

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Elcom\
Advanced IM Password Recovery\Registration
Code = "MGPR-8HPY-WP3D-MX6F-JUYYR-PVGK-FBWBF"

Dropping Routine

This cracking application drops the following files:

  • __tmp_rar_sfx_access_check_394734
  • aimpr.exe
  • start.exe
  • %Application Data%\KEY.reg
  • %Temp%\a00352.bat

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.. %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.700

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

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software
    • Elcom
  • In HKEY_CURRENT_USER\Software\Elcom
    • Advanced IM Password Recovery
  • In HKEY_CURRENT_USER\Software\Elcom\Advanced IM Password Recovery
    • Registration

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\Elcom\Advanced IM Password Recovery\Registration
    • Code = "MGPR-8HPY-WP3D-MX6F-JUYYR-PVGK-FBWBF"

Step 4

Search and delete these components

[ Learn More ]
There may be some components 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.
  • __tmp_rar_sfx_access_check_394734
  • aimpr.exe
  • start.exe
  • %Application Data%\KEY.reg
  • %Temp%\a00352.bat

Step 5

Search and delete these folders

[ 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.
  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\Wilbert
  • %User Profile%\LOCALS~1
  • %User Temp%\RarSFX0

Step 6

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