Analysis

  • max time kernel
    147s
  • max time network
    150s
  • 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, 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.

  • 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:4816
    • C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
      "C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1380
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c9b519f1-26e4-4524-a3b1-07cae1dda016" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1516
      • 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:3580
        • C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
          "C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4544

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

    8f019f59ff3327706c8cfa0ea394bec0

    SHA1

    7d611e5d801424c4e5f20ade81b7419f0edaa973

    SHA256

    88daa9462d0844f6023b4429b41bd40965bc39533ebc12388fb411186f5ba610

    SHA512

    874468930a555d7033ca62f3aee2948c853fdeeba9117ccac471a0d9f9b35fd7ba4b20fca2dac92ffd6e0ef49028e58b98e5730d388fb0937773c3dbfd98fe87

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

    Filesize

    392B

    MD5

    e9bd1ca32dd612d1668f9eb814361200

    SHA1

    706d3fc7f06694f17cecd0f508c1cb2cf8b18ddc

    SHA256

    152aa3e69a1d0e505d85273fe4facf507e4403cb759574ad5e678fc8babe3c0a

    SHA512

    9729915ab4e96a630a3499ce83a310c77121bd24335563ee0ffc0c605d1067100bde609a5fea88112629a1b0522b64432bc7f40d130598186a94bc741258079f

  • C:\Users\Admin\AppData\Local\c9b519f1-26e4-4524-a3b1-07cae1dda016\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe

    Filesize

    819KB

    MD5

    bd5b5a965a4c6686b45ab1b04308f846

    SHA1

    299acc22ef2a984a551742e0932180388f05c1df

    SHA256

    e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4

    SHA512

    4ec023c1261e5b6c0f92053df7a0fdfbbd9231463b6f130ba8327e7cfc34b1d97b1c123975c44155c569b040e78cd29a4958c6fcda94b3acca95153d1098cad7

  • memory/1380-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1380-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1380-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1380-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1380-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3580-21-0x0000000004B60000-0x0000000004BFD000-memory.dmp

    Filesize

    628KB

  • memory/4544-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4544-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4816-1-0x0000000004C20000-0x0000000004CC2000-memory.dmp

    Filesize

    648KB

  • memory/4816-2-0x0000000004CD0000-0x0000000004DEB000-memory.dmp

    Filesize

    1.1MB