Analysis

  • max time kernel
    147s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/04/2024, 20:08

General

  • Target

    e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe

  • Size

    819KB

  • MD5

    bd5b5a965a4c6686b45ab1b04308f846

  • SHA1

    299acc22ef2a984a551742e0932180388f05c1df

  • SHA256

    e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4

  • SHA512

    4ec023c1261e5b6c0f92053df7a0fdfbbd9231463b6f130ba8327e7cfc34b1d97b1c123975c44155c569b040e78cd29a4958c6fcda94b3acca95153d1098cad7

  • SSDEEP

    12288:p302+BkzBWU8pv7+2uJMPNsm17R8Cigjp074+BlelKFzNBY2k9Qt7hdkMPTfPJU0:p3a7duJMWmn854+3P5Nt7hPfPO/uA8Z

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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
    "C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
      "C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2632
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f1eb81a6-adc4-48bd-b741-3ac08f5f5afe" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3084
      • C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
        "C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3276
        • C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
          "C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3224

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

    fce7387f11f2fb2cfc031209f2f542d9

    SHA1

    25ada36a9a24dc962f5a7838e436ddbbaea684fd

    SHA256

    279b27327d25cd7f1b97a04d9b30c3f31a05f6fe9839bc9329fc471015d121be

    SHA512

    2e786736cce39251e61ea8499ee2f66c2918ad48164f6cd6eed181f7d32467a91e60ef7b47ba3aad0f0e570bea02b2cf8ccb01f89d2bf7e3dc44eb6eeda68791

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

    Filesize

    392B

    MD5

    492823775aaafff1544ac89dc17c8943

    SHA1

    24862048fe7a99ccbe04241ba1f1ba9f7088f137

    SHA256

    000516528fdf112e5a835abb2b3baf2affad6afcefff63b24923e3946014bd24

    SHA512

    4b5f0883f128ff7261674da8e9ad9e9cac5715fdab3bfe0791b79159802e3f6756dc1a40fb19e6d4ea313d8933e7f19e34353c230272fac5d1c3b351e056056b

  • C:\Users\Admin\AppData\Local\f1eb81a6-adc4-48bd-b741-3ac08f5f5afe\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe

    Filesize

    819KB

    MD5

    bd5b5a965a4c6686b45ab1b04308f846

    SHA1

    299acc22ef2a984a551742e0932180388f05c1df

    SHA256

    e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4

    SHA512

    4ec023c1261e5b6c0f92053df7a0fdfbbd9231463b6f130ba8327e7cfc34b1d97b1c123975c44155c569b040e78cd29a4958c6fcda94b3acca95153d1098cad7

  • memory/2632-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2632-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2632-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2632-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2632-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3008-1-0x0000000004AF0000-0x0000000004B8E000-memory.dmp

    Filesize

    632KB

  • memory/3008-2-0x0000000004B90000-0x0000000004CAB000-memory.dmp

    Filesize

    1.1MB

  • memory/3224-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3276-20-0x0000000004A00000-0x0000000004A99000-memory.dmp

    Filesize

    612KB