Analysis

  • max time kernel
    143s
  • max time network
    123s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22-05-2024 15:44

General

  • Target

    71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

  • Size

    710KB

  • MD5

    2fa6ec658c61947f197c939f130bac1d

  • SHA1

    363abe0b0187e0463b32178057ddbc14e3853846

  • SHA256

    71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673

  • SHA512

    8708184d91622fe81664a98a5ce117e0107cb73c8f62b40fb3e60985cef1c84dda42359f55dc02beec551d62dcbabb6c3c2f28e079d92d70a35f5f97c0da71ce

  • SSDEEP

    12288:pVO8OUTlNJ8ZOBmwmk6u3t4CYDRZ4uhPatmHw0NMD5LZOY6RsQV:pVOJqxmk6u3t4CYD74htSNM1Ll6

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\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
    "C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
      "C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2628
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\178bad1f-e7a5-47bb-b2c9-c8310e2f0ffb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3344
      • C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
        "C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:5012
        • C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
          "C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3488

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

    38ad9fd0e6f8edf48096e24d22a2e90c

    SHA1

    5be9922d4dce3610e903cfade1c087dea3efdd7c

    SHA256

    8031f86553aecae0f09e2b967ca136804007d189312c213885531fee39bd42b9

    SHA512

    fdc6e4ad59980f9f2a3e53496fb609e6e775ad1bccdfded143875a8d32b67cb61592b0ca992b977694a270f27ea28fe3304158c4c73e86f304529090decd9a88

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

    Filesize

    392B

    MD5

    1bec94cfdbf29c4991d294f7ed4e5d6b

    SHA1

    826bddd9ee354819e51117c70407800c5316e3a8

    SHA256

    38891cf9e72630cd472181eecbbce1ea85e8fd8330726c7f832aff8f596ab503

    SHA512

    428e8d6e0a0d891dc6dba552a9b57eb1c6a18dbc3ddeec757eb6ad6dd0ca0387aa50e41c40a3caf1a934db0420f16f24c415da7af0ff0ff3ff6c2912b9773721

  • C:\Users\Admin\AppData\Local\178bad1f-e7a5-47bb-b2c9-c8310e2f0ffb\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

    Filesize

    710KB

    MD5

    2fa6ec658c61947f197c939f130bac1d

    SHA1

    363abe0b0187e0463b32178057ddbc14e3853846

    SHA256

    71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673

    SHA512

    8708184d91622fe81664a98a5ce117e0107cb73c8f62b40fb3e60985cef1c84dda42359f55dc02beec551d62dcbabb6c3c2f28e079d92d70a35f5f97c0da71ce

  • memory/2628-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp

    Filesize

    1.1MB

  • memory/4952-1-0x0000000004A70000-0x0000000004B0A000-memory.dmp

    Filesize

    616KB