Analysis

  • max time kernel
    146s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/04/2024, 00:01

General

  • Target

    2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe

  • Size

    811KB

  • MD5

    ebdd98ee7607a3d6300406ddcdb955b1

  • SHA1

    659a2dd87be33c334fc153c9a7d6867f4beea607

  • SHA256

    2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138

  • SHA512

    d8f240d51c6ca1ddee7c1602cd397c39ddd4aab8d050bc454fdbbcb65b7663ab0f53708b981eb2daa8b85cfe5892242b8f575784409fb8795838647d6673e350

  • SSDEEP

    12288:pbrgWXLSO3or/ljxXbIdRvr6ku0Hyi50njpAmvyiHZTnx0RYcD:pbxLrKJxELvrE0Hy00xvySf0RYY

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 17 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\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
    "C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3768
    • C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
      "C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4864
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\0ec00c4b-da95-4020-b807-c94e2b29b681" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3620
      • C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
        "C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3796
        • C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
          "C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3732

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

    3c6a98dff2c8e5d41183fb934602bccf

    SHA1

    389eea4f6c8b9a19dd6efd65b2c979feeb4262a7

    SHA256

    8c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8

    SHA512

    fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd

  • 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

    c41d6cb6f3d5f8f8e14fc56a16082509

    SHA1

    525fc197f9a2184a409d7b9482a2b84bb5b12559

    SHA256

    07dcd6c74759bdde38c94a294da42be5ae0e6aad23a3c1d486c800c28126d0a8

    SHA512

    0d67e253fff5444f7b9d72af3e3fc8a7cd8f670c4ae852c619df7b7eed775dedaee5095c09033e5c2f831a94514399481112bb366b53464285658758916199fd

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

    Filesize

    392B

    MD5

    7a2fb411d906ae6341854d895b992a14

    SHA1

    01184db179b8feb2c0fa6d52b5c089b300ddf3b6

    SHA256

    2dbcc6b982c8a02447a4cd207f3f7cbad0d41768207745008506bbbd60cb22eb

    SHA512

    5bab14f5d25e721595faf663aedf07e093ad178955c5faf05fbf1833b126133b6067e6d766603c646f1d06ea8ff8ae5777aa004b0975fd67dc92b1516a977267

  • C:\Users\Admin\AppData\Local\0ec00c4b-da95-4020-b807-c94e2b29b681\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe

    Filesize

    811KB

    MD5

    ebdd98ee7607a3d6300406ddcdb955b1

    SHA1

    659a2dd87be33c334fc153c9a7d6867f4beea607

    SHA256

    2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138

    SHA512

    d8f240d51c6ca1ddee7c1602cd397c39ddd4aab8d050bc454fdbbcb65b7663ab0f53708b981eb2daa8b85cfe5892242b8f575784409fb8795838647d6673e350

  • memory/3732-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3732-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3768-2-0x0000000004CF0000-0x0000000004E0B000-memory.dmp

    Filesize

    1.1MB

  • memory/3768-1-0x0000000004C50000-0x0000000004CE8000-memory.dmp

    Filesize

    608KB

  • memory/3796-18-0x00000000049C0000-0x0000000004A52000-memory.dmp

    Filesize

    584KB

  • memory/4864-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4864-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4864-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4864-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4864-15-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB