Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-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.

  • 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:4832
    • C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
      "C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1352
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\19faccef-c96b-4b56-946c-60706f04a86f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:420
      • 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:4184
        • C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
          "C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1872

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

    9f3e8ae96b2e67ad8a39ee8c2dab86ec

    SHA1

    3dddcc6f5beca9dfbc90a6516dbc4662027d8b81

    SHA256

    cec926e2092931a83673a8020009c6a6868bf910d2bd0115540fde75df1a734f

    SHA512

    23c98a3f3612cb67f0e7c9478b42d114779c91efb61363a46cb357b0ed11984ed1237c7b3ebe229daa3797187cdba34048205b2894ac8fc371861888d0282c70

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

    Filesize

    392B

    MD5

    490b51aac279d143301e4f3290d5f07e

    SHA1

    0bd8c7c79b2575572a089c4b22d9a886e1b4e0ea

    SHA256

    4a44ba4145e063f476300c3a09a78d66b1091f05c858133edf0cd774eb518c34

    SHA512

    bbaf65d97fe27bf3f8758df77d9297cd2b630b7130770dc7f28de4acbe5ace1e8af6152a7dc2ec1cd43edfbf0269c16cb7776fe323f1cb50a77526a37e65bd04

  • C:\Users\Admin\AppData\Local\19faccef-c96b-4b56-946c-60706f04a86f\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe

    Filesize

    710KB

    MD5

    9ea4b9975ee6d846aefb37abc7f6856a

    SHA1

    8800a4603c86569ea6bb4e851e03fcf24c541eec

    SHA256

    36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6

    SHA512

    befdf67e3d7fcb5db5e51f6ac775bd8781e3692aea1030479a4972f6d51bdb2194c24d18c00d2f0df6f252a516be5332d58bf1df7ed4074f1eac12de768ce57e

  • memory/1352-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1352-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1352-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1352-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1352-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1872-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4832-2-0x0000000004B30000-0x0000000004C4B000-memory.dmp

    Filesize

    1.1MB

  • memory/4832-1-0x0000000004A90000-0x0000000004B2F000-memory.dmp

    Filesize

    636KB