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Analysis

  • max time kernel
    144s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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 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\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
    "C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3476
    • C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
      "C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1808
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c9504fc3-db50-43b5-b674-ee846e12f166" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3188
      • 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:4044
        • C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
          "C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4200

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

    38fe440dcb41bf01baa39153169a3d74

    SHA1

    74a11892ffb1e9baf34fca27ce617993a3221080

    SHA256

    80c40063d4b3729809906924dd55487a4f20c5bc8aeefa8cfc313dc532f7e423

    SHA512

    eaf66971a2b57aa93c9fb3c2d25759174dfb0a90d61f2589aeee59d3c540b5cbd9fb669891616e57b41d66b41b6586c3724d3b02f91a86bb7bd905bf2faac31c

  • 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

    a8189958d0f1442f5bfe7b93c897c43a

    SHA1

    f314077388d56b240c7f1cdfe49ae7250a1b9d7f

    SHA256

    e193f67eaf98376663d9f778f346f15f46616a755d58bd680eb1bc1d249623bf

    SHA512

    d5b7aa752dbe9d1db281daaacca770ddf2ccc3d1ae7ed3f7b38a069b43318d9e11bcbef7045726165059c5d3b05ba6f48286ced37e89ac6034266b984e64a17f

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

    Filesize

    392B

    MD5

    7e996f99d26fe85f6047e641a6e95b2f

    SHA1

    36e025bc9d8ec304da465cad7973fdaca3778d1f

    SHA256

    777dcc0c3739cd8ee1297eb3d10a3e54b6850ee59a014866b4234892eef844ef

    SHA512

    3fac9b5da1e975f0c5cb64c8c62df05cb4d4051813674810b9a7248884e368e675ef96f983b6483dee00e3f20747582b3e7dae60059d685f4510c0f88b8f5d57

  • C:\Users\Admin\AppData\Local\c9504fc3-db50-43b5-b674-ee846e12f166\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe

    Filesize

    745KB

    MD5

    03813c0d02b548f6d16a09dc6220e157

    SHA1

    03666fedc343f1ea458f1d8c7e0ffad796e90788

    SHA256

    ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe

    SHA512

    c856f9dd525c98a5200f3ef7201dd1566306a7c33b7ca9988e91f2d12694bc3fac761f24096b9a0044ba9c9044d4b8f7feef967b9395cfee71b1e0d9fd50aa70

  • memory/1808-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-15-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3476-1-0x0000000004960000-0x00000000049F3000-memory.dmp

    Filesize

    588KB

  • memory/3476-2-0x0000000004AA0000-0x0000000004BBB000-memory.dmp

    Filesize

    1.1MB

  • memory/4044-18-0x00000000048F0000-0x0000000004986000-memory.dmp

    Filesize

    600KB

  • memory/4200-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4200-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB