Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 15:46

General

  • Target

    36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe

  • Size

    710KB

  • MD5

    9ea4b9975ee6d846aefb37abc7f6856a

  • SHA1

    8800a4603c86569ea6bb4e851e03fcf24c541eec

  • SHA256

    36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6

  • SHA512

    befdf67e3d7fcb5db5e51f6ac775bd8781e3692aea1030479a4972f6d51bdb2194c24d18c00d2f0df6f252a516be5332d58bf1df7ed4074f1eac12de768ce57e

  • SSDEEP

    12288:LKlacskiQvrj1WwBq2kXWpOpNECzxBbXppBiK0IQjBI14RM1kRx5:LKl5F1j0bECnbXpDijBDO6

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes
  • extension

    .vepi

  • offline_id

    EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1

  • payload_url

    http://sdfjhuz.com/dl/build2.exe

    http://cajgtus.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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 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\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
    "C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
      "C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1132
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\cf33ec57-1961-4e7b-87f1-469c6d2eb487" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:744
      • C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
        "C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3232
        • C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
          "C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1544

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

    6728aea2631b86a76c237508d8ba9b55

    SHA1

    7a670f95cac088313f7558869162fe01c6dc0ec9

    SHA256

    e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b

    SHA512

    533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5

  • 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

    fe824b6fbf8d4cfd627811144e866c99

    SHA1

    eea61c3198aad016b5db8ec2ae46496dd4e61817

    SHA256

    4b07b572acfb3eff9bbea8a2bc47f145a0af7a718240d179845d0c3a09c91f43

    SHA512

    4d65abb0da8b4d463a7ddbe7a897ffe894f12fc0cf2315dae47d5c8188a1fb13249d1ae6b6967e9c1b6baded0d087337937540a2f7c8c0102011d785e2c74813

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

    Filesize

    392B

    MD5

    1846e07a19c4f258343b7f0cf7c1f1a5

    SHA1

    260856538694f4f918abad786fe1e20a04f3edbf

    SHA256

    d74b625e0295fd57f6d6295ca049cc5e241d72c6ea3c7c9361688d02846b02e1

    SHA512

    b88b4ac2df040fcc759ae329d493da9855f7f97934faf8a372a2ba8aff2709c34e2d3cd69a98bf851ab0c7379867548e3b46859e052b70527d0d625158cc446e

  • C:\Users\Admin\AppData\Local\cf33ec57-1961-4e7b-87f1-469c6d2eb487\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe

    Filesize

    710KB

    MD5

    9ea4b9975ee6d846aefb37abc7f6856a

    SHA1

    8800a4603c86569ea6bb4e851e03fcf24c541eec

    SHA256

    36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6

    SHA512

    befdf67e3d7fcb5db5e51f6ac775bd8781e3692aea1030479a4972f6d51bdb2194c24d18c00d2f0df6f252a516be5332d58bf1df7ed4074f1eac12de768ce57e

  • memory/1132-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1132-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1132-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1132-1-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1132-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1544-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1900-2-0x00000000048B0000-0x000000000494B000-memory.dmp

    Filesize

    620KB

  • memory/1900-4-0x0000000004AB0000-0x0000000004BCB000-memory.dmp

    Filesize

    1.1MB