Analysis

  • max time kernel
    142s
  • max time network
    123s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240214-en
  • resource tags

    arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09/04/2024, 09:20

General

  • Target

    bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe

  • Size

    771KB

  • MD5

    3673d9d72e9a1c772c4893f20f87d106

  • SHA1

    9b345d65d056afb21352dd1ae43c18bae3bcd7c0

  • SHA256

    bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d

  • SHA512

    320e6945b6eb7cb37e8a4c4dc307687993765c07faa7c225ed0cfa8903500f7ccd8c7e6a672104bf7749858f35ffd4b744532bd88da4208c4210f55f9ab0a509

  • SSDEEP

    12288:fnpOZS2Q/3MXnCZLB0WZWkWn6xxVKqOlTsADs/37nNAtZb616:MSy8nZWb6jGlTVg/LnqtZWs

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .uazq

  • offline_id

    Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1

  • payload_url

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

    http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0860PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 18 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\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe
    "C:\Users\Admin\AppData\Local\Temp\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe
      "C:\Users\Admin\AppData\Local\Temp\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2800
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\972c59d6-0672-4da8-843e-dccb60b16645" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1844
      • C:\Users\Admin\AppData\Local\Temp\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe
        "C:\Users\Admin\AppData\Local\Temp\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2092
        • C:\Users\Admin\AppData\Local\Temp\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe
          "C:\Users\Admin\AppData\Local\Temp\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4104

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

          fc5408c48a55314c72e200b74330cac4

          SHA1

          7e8889ec3189a40e6078088927bf3612753fa628

          SHA256

          7ea2a016d97635b1367455af2250cbf9e9c34d293829d11fc21ce905347590c4

          SHA512

          481753ef755c188012919ea728ea0395f22b6ce83f2f9a11675be6072f154db141b2382dc62ad7c3c95e36596529176a66f40e3d118cf0e33ea8e6f716ae1d77

        • 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

          a8a6decac88caae3b60459b14c01e907

          SHA1

          daeb406b57bb1ad2d0367fb12a02b5ddc54dae4b

          SHA256

          e5bb1089eb3791d14638e235a0dcc91afa1c7a3d5350b4ea0b5f75d17c2dc5af

          SHA512

          5cbb9ab87eb60c3dcdacf621bd57b8e0d7e5eb588934d2b61e2a95e042928cd3125f243f4347ebaf13696fb2a9c0da33c909383e992af71d36ed2828cfab51ad

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

          Filesize

          392B

          MD5

          7965b46f6938502199f3fa3b6316c862

          SHA1

          cd6c705029b6dcb446d555a21bf0b6d1bff32123

          SHA256

          c2f8e09f97308014b56dfdad627b1ac2c11e89c98941ea216bcaf91887b02bc5

          SHA512

          c431864e2cc8b9499a0b7587ddc24ea5360b31c1e8f7ac56f0de3807b6bebf3dfa6862d3421164b355f5480b3f4bebbef63220dbc9e823011177f754edf6f820

        • C:\Users\Admin\AppData\Local\972c59d6-0672-4da8-843e-dccb60b16645\bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d.exe

          Filesize

          771KB

          MD5

          3673d9d72e9a1c772c4893f20f87d106

          SHA1

          9b345d65d056afb21352dd1ae43c18bae3bcd7c0

          SHA256

          bbf4bf6d8f4ae6601964a7886f93cdb7e2389cb073a0675f738af95f3dbad32d

          SHA512

          320e6945b6eb7cb37e8a4c4dc307687993765c07faa7c225ed0cfa8903500f7ccd8c7e6a672104bf7749858f35ffd4b744532bd88da4208c4210f55f9ab0a509

        • memory/1740-1-0x0000000004AA0000-0x0000000004B3E000-memory.dmp

          Filesize

          632KB

        • memory/1740-2-0x0000000004B40000-0x0000000004C5B000-memory.dmp

          Filesize

          1.1MB

        • memory/2092-20-0x0000000002FF0000-0x000000000308C000-memory.dmp

          Filesize

          624KB

        • memory/2800-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2800-17-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2800-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2800-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2800-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-31-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-37-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-38-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4104-39-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB