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HackTool.Win32.OneKeyRe.A

December 18, 2024
 Analysis by: Neljorn Nathaniel Aguas
 ALIASES:

Win32/StartPage.OWF trojan (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted:

  • 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.

  TECHNICAL DETAILS

File Size:

6,305,368 bytes

Initial Samples Received Date:

06 Jan 2023

Payload:

Drops files

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 drops the following files:

  • %System Root%\Boot\BCD_.LOG{Number}
  • %System Root%\okldr
  • %System Root%\okldr.mbr
  • %System Root%\YlmF.ima
  • %System Root%\Ghost.ba_
  • %User Temp%\Ghost.exe
  • %User Temp%\WimaDll.dll
  • {Backup Path}\{Backup Filename} → set by the user when creating a backup of the system

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following processes:

  • %System%\BCDEdit.exe /export %System Root%\Boot\BCD_
  • %System%\BCDEdit.exe /create {GUID} /d "OneKey Recovery" /application bootsector
  • %System%\BCDEdit.exe /set {GUID} path \okldr.mbr
  • %System%\BCDEdit.exe /displayorder {GUID} /addlast
  • %System%\BCDEdit.exe /timeout 3
  • %System%\BCDEdit.exe /default {GUID}
  • %System%\BCDEdit.exe /set {GUID} device partition=\Device\HarddiskVolume1

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other Details

This Hacking Tool does the following:

  • The dropped Ghost.ba_ contains the following batch commands:
    • Ghost.exe -noide -nousb -clone,mode=pdump,src="{Source Partition Index}",dst="{Destination Partition Index}\Ghost\Bak.GHO" -fr restart
  • It is a system backup and restore tool that allows users to create a full system image and restore it when needed.
  • It integrates Norton Ghost as its core engine for disk imaging and restoration.
  • It offers options to restore or back up the operating system.
  • It allows users to install or repair the recovery system.
  • It contains a field that allows users to select or input the location of the backup image file.
  • It displays all detected drives and partitions which includes the following information:
    • Partition Sequence
    • Volume Label
    • File System Format
    • Free Space
    • Total Capacity
  • It allows users to select specific drives or partitions for restoration or backup.
  • It allows users to search for backup files such as .GHO within a specified directory depth.
  • It offers the following compression levels:
    • No Compression
    • Fast Compression
    • High Compression
    • Maximum Compression
  • Users can choose between the following Ghost versions:
    • 11.0.2
    • 11.5.1
    • Other Ghost executables provided by the user
  • It has an option to disable access to IDE devices during backup operations.
  • It allows users to choose between the operating system boot menu or a hotkey for recovery.
  • It provides the following hotkey options for triggering the recovery process during boot:
    • F7
    • F8
    • F10
    • F11
    • F12

  SOLUTION

Minimum Scan Engine:

9.800

SSAPI PATTERN File:

2.587.00

SSAPI PATTERN Date:

12 Jan 2023

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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 these files

[ 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.  
  • %System Root%\Boot\BCD_.LOG{Number}
  • %System Root%\okldr
  • %System Root%\okldr.mbr
  • %System Root%\YlmF.ima
  • %System Root%\Ghost.ba_
  • %User Temp%\Ghost.exe
  • %User Temp%\WimaDll.dll
  • {Backup Path}\{Backup Filename}

Step 4

Scan your computer with your Trend Micro product to delete files detected as HackTool.Win32.OneKeyRe.A. 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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