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Analysis

  • max time kernel
    141s
  • max time network
    167s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    06/04/2024, 21:39

General

  • Target

    ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe

  • Size

    745KB

  • MD5

    03813c0d02b548f6d16a09dc6220e157

  • SHA1

    03666fedc343f1ea458f1d8c7e0ffad796e90788

  • SHA256

    ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe

  • SHA512

    c856f9dd525c98a5200f3ef7201dd1566306a7c33b7ca9988e91f2d12694bc3fac761f24096b9a0044ba9c9044d4b8f7feef967b9395cfee71b1e0d9fd50aa70

  • SSDEEP

    12288:6dgX02mhTllwTf0YCzdBXdoGSMEihOpT5dXRwSJmu9A5KJ8h23+BvY3mNgVhLlM4:6dG+Tllyf0YCV4i2dBwUjx6AmNgVhaBi

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 9 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 2 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).

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
    "C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4048
    • C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
      "C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4920
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\934fff50-f4f1-444a-bd95-5db3e4038b00" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3136
      • C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
        "C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2252
        • C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
          "C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
            PID:1488
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1488 -s 600
              5⤵
              • Program crash
              PID:4924
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1488 -ip 1488
      1⤵
        PID:2392

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\934fff50-f4f1-444a-bd95-5db3e4038b00\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe

        Filesize

        745KB

        MD5

        03813c0d02b548f6d16a09dc6220e157

        SHA1

        03666fedc343f1ea458f1d8c7e0ffad796e90788

        SHA256

        ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe

        SHA512

        c856f9dd525c98a5200f3ef7201dd1566306a7c33b7ca9988e91f2d12694bc3fac761f24096b9a0044ba9c9044d4b8f7feef967b9395cfee71b1e0d9fd50aa70

      • memory/1488-22-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1488-23-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1488-25-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2252-20-0x00000000049D0000-0x0000000004A72000-memory.dmp

        Filesize

        648KB

      • memory/4048-1-0x0000000004A30000-0x0000000004AC6000-memory.dmp

        Filesize

        600KB

      • memory/4048-2-0x0000000004BD0000-0x0000000004CEB000-memory.dmp

        Filesize

        1.1MB

      • memory/4920-3-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4920-4-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4920-5-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4920-6-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4920-17-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB