Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22-05-2024 12:30

General

  • Target

    0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe

  • Size

    707KB

  • MD5

    1534a3acfde4ce180b5e9619954df27f

  • SHA1

    8d4ceb341b7ac57aab2f94236e7e8b1ede75051f

  • SHA256

    0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04

  • SHA512

    ffedda4d8936eed91291fe79146b508eaf4d3bf8c378ae1f946ff1a45844597183ce87f974f4acef7f8956b3bb8afbfe1c339ccf9b9a1374f7a80a8a48f86373

  • SSDEEP

    12288:HUsJbvW1Haefnh1S3rKZGvRemBKgeTZA63TXNbL0IqrMNuDuEcQuB2t79:HUs9hq6KErQDVA63TdBqrMNcuEcJ6

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes
  • extension

    .vehu

  • 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: 0872PsawqS

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\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
    "C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4468
    • C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
      "C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3700
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f8e7c840-4977-4c38-8712-114c11923770" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4492
      • C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
        "C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1688
        • C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
          "C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3152

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

    226b1d6e1a8875f271af3ed2aa6c94a3

    SHA1

    242097e48642110115d35a39d178f3b34658c0c5

    SHA256

    07cdedd0a0c3f261b6548d4e97456824f2847076eacef7cc5675f8c18a27094d

    SHA512

    6a685228b4460aaeaffc85cc8bea317450996ace95588dbdd26d382ac9c6dfc9b1fc349680f1e7938b658f7b4a0683d204fc1385b19b0f6efa784c5af907d445

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

    Filesize

    392B

    MD5

    24ddce913ea12fd80e2a0c6341c94cb3

    SHA1

    4b16203b7ff06f165868c643350deec002fdfa53

    SHA256

    3f82aaf128c64fca9188f8b9e26c591ec7ecfddaa5af2cb69a7409507445a68d

    SHA512

    ae0f72ecf1b64f12f73046e8211ad227b89e542e1ce3b20424a4b1d0d761942268c382ec3482fd860a63fd4ea2ea07e3d9b3df74f1beefaf49f861c08cb38dd4

  • C:\Users\Admin\AppData\Local\f8e7c840-4977-4c38-8712-114c11923770\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe

    Filesize

    707KB

    MD5

    1534a3acfde4ce180b5e9619954df27f

    SHA1

    8d4ceb341b7ac57aab2f94236e7e8b1ede75051f

    SHA256

    0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04

    SHA512

    ffedda4d8936eed91291fe79146b508eaf4d3bf8c378ae1f946ff1a45844597183ce87f974f4acef7f8956b3bb8afbfe1c339ccf9b9a1374f7a80a8a48f86373

  • memory/3152-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3700-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3700-2-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3700-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3700-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3700-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4468-4-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

    Filesize

    1.1MB

  • memory/4468-1-0x0000000004A20000-0x0000000004AB6000-memory.dmp

    Filesize

    600KB