Resubmissions

22-05-2024 13:08

240522-qc9qxscd94 10

22-05-2024 12:52

240522-p3672scb2z 10

Analysis

  • max time kernel
    143s
  • max time network
    126s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-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 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • 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:4644
    • C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
      "C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3772
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\525d689b-2da8-4a8a-b3f6-6eb7b61f15b8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3384
      • 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:3376
        • C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
          "C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:244

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

    60f44c80825b67cd60f132b9dea9ea73

    SHA1

    6f2a102b6356463ed58b65d8a9c224e69883811c

    SHA256

    e48e917811f7cfb740ae8982cac2409325771f0c1389053d1a620f927ad906b9

    SHA512

    62006d2709e10a4faab225993ef027f1ff3cad3dd3982d1c7165afd1903061cddd07dfda7102ba2fcf7811c0fed6a25ef11cbf7e849b5b4dc67b0815d78ed883

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

    Filesize

    392B

    MD5

    2045d2c5f81d672f1d8b315193109961

    SHA1

    b2b494cb45dbc7895190d6193d7ab3c53b9b53b5

    SHA256

    d0067e894fc747589f9ebe45d752a683a186f5bdceca89217729186c86c248a0

    SHA512

    e912812158d7c77ad18bd0a178d317e50d57e63e880ccf67264c6dd0e9803eeeff0371d59806263d760deea3265fe604b944e6e5ae6c737359e5b11d9fb22d31

  • C:\Users\Admin\AppData\Local\525d689b-2da8-4a8a-b3f6-6eb7b61f15b8\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe

    Filesize

    710KB

    MD5

    3b8a963e6b19ad273243a1a31c8daca5

    SHA1

    a1e84e3b6d68892d95427fb0d2602982b0ed3763

    SHA256

    ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35

    SHA512

    c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561

  • memory/244-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/244-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/244-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/244-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/244-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/244-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/244-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/244-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/244-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3772-1-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3772-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3772-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3772-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3772-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4644-2-0x0000000004A90000-0x0000000004B23000-memory.dmp

    Filesize

    588KB

  • memory/4644-4-0x0000000004B50000-0x0000000004C6B000-memory.dmp

    Filesize

    1.1MB