Overview

overview

10

Static

static

3

2025-12-17...ex.exe

windows10-2004-x64

10

2025-12-17...ex.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251223-en
  • resource tags

    arch:x64arch:x86image:win11-20251223-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    17/12/2025, 16:11

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General

  • Target
    2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe
  • Size 56KB
  • Sample251217-tm2d3shj9v
  • SHA256 c6c3ee21e178db23f79c8186688a8538906fdb6b2f69f753b419a83fddaae5a2
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
defense_evasiondiscoverydarksideransomware

Malware Config

Extracted

Path

  • C:\Recovery\README.ecb20546.TXT

  • darkside

Ransom Note
  • ----------- [ Welcome to DarkSide ] -------------> What happend? ---------------------------------------------- Your computers and servers are encrypted, backups are deleted. 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 500GB data. The data is preloaded and will be automatically published if you do not pay. After publication, your data will be available for at least 6 months on our tor cdn servers. 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 get access on website? ---------------------------------------------- Using a TOR browser: 1) Download and install TOR browser from this site: https://torproject.org/ 2) Open our website: http://dark24vx6fsmdrtbzdzjv6ckz4yqyued4uz455oqpctko7m6vbrzibad.onion/1SJ1TB6JTW4SEUG6GSN7IVSGERSM5H5M2VZOHQ4PSIVS2AGAQDMT3QVGIFMPM3K8 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://dark24vx6fsmdrtbzdzjv6ckz4yqyued4uz455oqpctko7m6vbrzibad.onion/1SJ1TB6JTW4SEUG6GSN7IVSGERSM5H5M2VZOHQ4PSIVS2AGAQDMT3QVGIFMPM3K8

Signatures

  • DarkSide

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

    ransomwaredarkside
  • Darkside family
    darkside
  • Renames multiple (154) files with added filename extension

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

    ransomware
  • Enumerates connected drives 3 TTPs 3 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • System Location Discovery: System Language Discovery 1 TTPs 3 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 2 IoCs
    defense_evasion
  • Modifies data under HKEY_USERS 32 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 4 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\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:5016
  • C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe
      "C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe"
      2⤵
      • Enumerates connected drives
      • Drops file in System32 directory
      • Sets desktop wallpaper using registry
      • System Location Discovery: System Language Discovery
      • Modifies Control Panel
      • Modifies data under HKEY_USERS
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5864
      • C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe
        C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe -work worker0 job0-5864
        3⤵
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        PID:6124
      • C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe
        C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe -work worker1 job1-5864
        3⤵
        • Enumerates connected drives
        PID:4788
      • C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe
        C:\Users\Admin\AppData\Local\Temp\2025-12-17_8f88bebf7dbb7206c85e7d101b6c7789_darkside_elex.exe -work worker1 job1-5864
        3⤵
        • Enumerates connected drives
        PID:3800
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2352

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        README.ecb20546.TXT
        • Path C:\Recovery\README.ecb20546.TXT
        • Size 2KB
        • SHA256 e54931323e6a6e6071c3324e4ab4fe07ff4f069b080cda4338489e820aa7a444
        • MD5 SHA1 SHA512
        Submit Download