Analysis

  • max time kernel
    141s
  • max time network
    122s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21-05-2024 19:10

General

  • Target

    366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe

  • Size

    709KB

  • MD5

    75b4ec737dc7c826feeed8d91b096708

  • SHA1

    a2bbfab0e93a5b9e38a88d82392df3f79515b1ac

  • SHA256

    366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95

  • SHA512

    6b3a99f7d65f7403afe2df6b89f3f046c1bbb4bdf789de0efa3a7cbbc82d905c823392396447dc0fafae766f020d913a3b43f4af07f07d6c0430bc0e6dabf088

  • SSDEEP

    12288:c/PFhwPoJSHVHOtQWCpwEX7nP7ifUXNIOmKAnkZ55Hxk1w2Ux2h9yZw:JPoJwVLWCpdXzDKXKAkZ5xxwwR0M

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes
  • extension

    .vepi

  • 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: 0871PsawqS

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\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe
    "C:\Users\Admin\AppData\Local\Temp\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3004
    • C:\Users\Admin\AppData\Local\Temp\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe
      "C:\Users\Admin\AppData\Local\Temp\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1804
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\71d2463d-0767-48e6-955b-9211af1730eb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3344
      • C:\Users\Admin\AppData\Local\Temp\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe
        "C:\Users\Admin\AppData\Local\Temp\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1540
        • C:\Users\Admin\AppData\Local\Temp\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe
          "C:\Users\Admin\AppData\Local\Temp\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:740

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

    a1d955617a4d146e70544d0d9a0390ca

    SHA1

    5ffdc4453b23e24a7cb0e634b26864c169f5257b

    SHA256

    8dbff2c0018158256912d87dd495a68c351303a319f50f204a930317e867aeb3

    SHA512

    0bffbc27638b12cc04f335de8c4f3c74df01ae55b56f389f8d046d797b4c62d31bbff057ea75ce32f67cdd3b878fd0aad3eb62e983f814296e1b94de3c6ba810

  • 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

    efa8e178fc0e196f12596d7ad19f66f0

    SHA1

    d5a5ebffff54944b00aaace80a95c948be8547bc

    SHA256

    5309f0997185cc4e3876112c8eef51f442711ae9b1f325073d15ff58c6f91610

    SHA512

    f89a2bebd5b5e2e63149134cbbe442915051349282e46f4276c5578dfab279d85420b17ca804424237e40f32e8960e686c555a3bd2b66e92b5df621a66e029c9

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

    Filesize

    392B

    MD5

    b90dd61449e493287d6b5865d6e2c627

    SHA1

    3f6ac3afc60d7e05574c73a407ecf1a0dcb3312d

    SHA256

    19a7e5346a78216b8564168f3e7f8f788844b0bf73f4d5efad247d5c31f61b0d

    SHA512

    596ee41edc5fcc2a6ab219b59a00f6cfbf6b4e0250cb2d39d8f6f56aacd858d70ed7c8a4f2566066e5cbf454bb9f50ef3b1eb7bf72e939ba7ac40747f97cce59

  • C:\Users\Admin\AppData\Local\71d2463d-0767-48e6-955b-9211af1730eb\366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95.exe

    Filesize

    709KB

    MD5

    75b4ec737dc7c826feeed8d91b096708

    SHA1

    a2bbfab0e93a5b9e38a88d82392df3f79515b1ac

    SHA256

    366d63689d0dcbba76ea92d43a410e6455725523b7f66871cc05f57d1c8dff95

    SHA512

    6b3a99f7d65f7403afe2df6b89f3f046c1bbb4bdf789de0efa3a7cbbc82d905c823392396447dc0fafae766f020d913a3b43f4af07f07d6c0430bc0e6dabf088

  • memory/740-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/740-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/740-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/740-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/740-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/740-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/740-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/740-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/740-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1804-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1804-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1804-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1804-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1804-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3004-1-0x00000000025E0000-0x000000000267C000-memory.dmp

    Filesize

    624KB

  • memory/3004-2-0x0000000004060000-0x000000000417B000-memory.dmp

    Filesize

    1.1MB