Analysis

  • max time kernel
    155s
  • max time network
    156s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15/04/2024, 23:22

General

  • Target

    90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe

  • Size

    860KB

  • MD5

    e2a733f51b662778b62c47f9e6727c00

  • SHA1

    8b358b86b59be7ec513807b620f3bd88ec72dfef

  • SHA256

    90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84

  • SHA512

    72d12b0039fcc5cc5d19b08b53fed47c97e10fdf64e13b99ecb872705185d54f0c5a7ae9a7b53562749cbdf7cf110870c56ad40277bd05b005012578b6e6d4c8

  • SSDEEP

    12288:/RxxWkzr8xTt6mMNSRLFMILA8bqhD1qKyZ+8ssIqYHHyPpr9mvez6APKp+Y0INh6:/RIZFPHbqhD1qKyk8jYkDR3PYcFD

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\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe
    "C:\Users\Admin\AppData\Local\Temp\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4892
    • C:\Users\Admin\AppData\Local\Temp\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe
      "C:\Users\Admin\AppData\Local\Temp\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4236
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\98cf148f-3035-4ce7-9041-e25f5670bb4d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3956
      • C:\Users\Admin\AppData\Local\Temp\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe
        "C:\Users\Admin\AppData\Local\Temp\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3564
        • C:\Users\Admin\AppData\Local\Temp\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe
          "C:\Users\Admin\AppData\Local\Temp\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4340

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

    e32863480615be830c1475a83ce63b49

    SHA1

    0bd099b0665c07b2e2f023da5f774ad25ffa1a94

    SHA256

    c4213da8a9fd66222df0dedf2b063a1963c45560d55df6319aaf108c8510b612

    SHA512

    f71a502f6eb9a3158d48566d28e5f1ca876648413555c2d09140784a5489f947ddc33575792141724c9cf7503092d357a09773f69b5550bc58127ee91da5c7ee

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

    Filesize

    392B

    MD5

    31d3362d58f9edfde4d2337ae0547a1f

    SHA1

    70187b3031002fb374f770bac1be58c09c9134ed

    SHA256

    d454d9408227d98d58a2ff01a559bce4f0e464d5fb13a5ac656749d69ea6082b

    SHA512

    930bbd2bdc4998e3bff42aea18fef225f0604ae933efbe628db1c326a175b0dab5a22b820f227d9326d4b5b5f56feca4d3aed47a927ffa7551decc2bde098322

  • C:\Users\Admin\AppData\Local\98cf148f-3035-4ce7-9041-e25f5670bb4d\90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84.exe

    Filesize

    860KB

    MD5

    e2a733f51b662778b62c47f9e6727c00

    SHA1

    8b358b86b59be7ec513807b620f3bd88ec72dfef

    SHA256

    90b0578ebea410345cb75e528773c510d4ae9f124160745233efb6eef3930c84

    SHA512

    72d12b0039fcc5cc5d19b08b53fed47c97e10fdf64e13b99ecb872705185d54f0c5a7ae9a7b53562749cbdf7cf110870c56ad40277bd05b005012578b6e6d4c8

  • memory/3564-21-0x0000000004B40000-0x0000000004BDC000-memory.dmp

    Filesize

    624KB

  • memory/4236-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4340-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4892-1-0x0000000004C10000-0x0000000004CB2000-memory.dmp

    Filesize

    648KB

  • memory/4892-2-0x0000000004CC0000-0x0000000004DDB000-memory.dmp

    Filesize

    1.1MB