Resubmissions

22-05-2024 13:08

240522-qc9qxscd94 10

22-05-2024 12:52

240522-p3672scb2z 10

Analysis

  • max time kernel
    142s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 12:52

General

  • Target

    ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe

  • Size

    710KB

  • MD5

    3b8a963e6b19ad273243a1a31c8daca5

  • SHA1

    a1e84e3b6d68892d95427fb0d2602982b0ed3763

  • SHA256

    ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35

  • SHA512

    c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561

  • SSDEEP

    12288:uZFvwaeEjEzNrkoB7l2sBag8RObTEJtV8iHBB3d6cGdAQ9GWmJK4nVDq8Xw7K5qg:uZFYnEjGNwoB7fdzEJt2iHBBMRdLEJKU

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes
  • extension

    .vehu

  • offline_id

    EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1

  • payload_url

    http://sdfjhuz.com/dl/build2.exe

    http://cajgtus.com/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0872PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
    "C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2568
    • C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
      "C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3876
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ef894ec3-4bd5-4bbe-a198-847e25555038" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:5024
      • C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
        "C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3772
        • C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
          "C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2084
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3440,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=4084 /prefetch:8
    1⤵
      PID:4188

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

      Filesize

      1KB

      MD5

      6728aea2631b86a76c237508d8ba9b55

      SHA1

      7a670f95cac088313f7558869162fe01c6dc0ec9

      SHA256

      e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b

      SHA512

      533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

      Filesize

      724B

      MD5

      8202a1cd02e7d69597995cabbe881a12

      SHA1

      8858d9d934b7aa9330ee73de6c476acf19929ff6

      SHA256

      58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

      SHA512

      97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

      Filesize

      410B

      MD5

      7d3de5a292193702226d0d863ee59f71

      SHA1

      1f32d6ce7d346a70e372a3b207c66c5fd38a9d6c

      SHA256

      3621bddbfef513a7e863c6a68d126b40873d89c19c1db3f367642116b0eb6146

      SHA512

      a186859759f809a5aaf528cc22ecc6da696212e9eeae492a917ef3758d95623991371c4461da9384eb9618b40b32350cb52f5fc7734206d17e6fc8ae7b2e8c1e

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

      Filesize

      392B

      MD5

      df09d9f4a71a7a949e5be0aecd420ec1

      SHA1

      2eef08b902c38c6481d76738f252216431cfdf36

      SHA256

      33d1d1238799d8ec9257f449e7ea08827ad3b5df4237e767d5df8b433e0f8294

      SHA512

      e54d964b6a9be2f37acd47b7795c9dc1fb711d9078c406159f1048453f39127876e514ed3f3b1508fa7d43142f2aca4f79d2d1f3abc28ad69b89ad0016430f8d

    • C:\Users\Admin\AppData\Local\ef894ec3-4bd5-4bbe-a198-847e25555038\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe

      Filesize

      710KB

      MD5

      3b8a963e6b19ad273243a1a31c8daca5

      SHA1

      a1e84e3b6d68892d95427fb0d2602982b0ed3763

      SHA256

      ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35

      SHA512

      c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561

    • memory/2084-28-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-37-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-20-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-36-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-35-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-32-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-29-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2084-27-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2568-1-0x0000000004920000-0x00000000049B7000-memory.dmp

      Filesize

      604KB

    • memory/2568-2-0x0000000004A00000-0x0000000004B1B000-memory.dmp

      Filesize

      1.1MB

    • memory/3876-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3876-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3876-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3876-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3876-17-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB