Analysis

  • max time kernel
    146s
  • max time network
    150s
  • 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 07:20

General

  • Target

    2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe

  • Size

    702KB

  • MD5

    e6ef999725d74157da2a50696d30db78

  • SHA1

    1c87613f9d25fc1d2cb1c53c2149c032c8622436

  • SHA256

    2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d

  • SHA512

    0219f8c142821d06cea4b717d387a3c2b84c1da1f2161bd8bcbb16ef5b79e77b9bdb3fc9d527a639d601c6aedc9ff6e1aad664bfb9e9757081958811a5ee2e11

  • SSDEEP

    12288:1cmDl3iejbr5hDAUM84iv4whKNjaXJXqdILvyc6J9v2Tu46uJ3/sw:1cY3Nl5XPxJKNjAcIJCv2Tu41Jj

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\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
    "C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
      "C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5008
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\b6b277c1-fb4b-4ed4-8f0b-137351a49816" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4052
      • C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
        "C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3932
        • C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
          "C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:412

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

    195fc28150bef9b30510eed36fb325af

    SHA1

    1ea8a314d8af1d431b77d5280d1782e9a8e867c6

    SHA256

    5c2e51ccf5767f80257a0a0bb66dee40957e5379431e15a118e7f1343ad1f6e0

    SHA512

    537da7e46d8b5afc796c1908042088c583c5380fb729f3665845fe36286b3efeaec9fa26475e9c2263f55b1eca04bd7ae26088a9a85950b2b7f750fd24eadcfc

  • 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

    5e30e3a98c4e4f9e402fb647a18fffac

    SHA1

    dcfcfbc61ab903a524b2a127b9ba4ff54cf8b37a

    SHA256

    87dfeeb139de09ff4f4179e48d75a50cd2196c6172e69f64eb95bd5437b4cfcc

    SHA512

    6a5138a939d6f5f475dd2f8d0c1bc3ba58a63e2528b4281bfc1aa614f7060e34c273c77661b33fd1a58b1fd44d5510dc63ed392363612d9f2dbc8c483f07d35f

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

    Filesize

    392B

    MD5

    fa048d5434a6be56d4634500edbc5d97

    SHA1

    fcc1e949151529dd63905d4413ca541405894823

    SHA256

    ead252dc91d567e145974bac45078cf5124cf72642fa97b27d8d9f4bbf68bb36

    SHA512

    551afaf80a721a1d45b6c7e94bdd0c1ba08f4958cb8d6985998feb975cd5dc57d08577a0e451b71a40eea48447025781e72a0470f658e29a6e940595b1566472

  • C:\Users\Admin\AppData\Local\b6b277c1-fb4b-4ed4-8f0b-137351a49816\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe

    Filesize

    702KB

    MD5

    e6ef999725d74157da2a50696d30db78

    SHA1

    1c87613f9d25fc1d2cb1c53c2149c032c8622436

    SHA256

    2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d

    SHA512

    0219f8c142821d06cea4b717d387a3c2b84c1da1f2161bd8bcbb16ef5b79e77b9bdb3fc9d527a639d601c6aedc9ff6e1aad664bfb9e9757081958811a5ee2e11

  • memory/412-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/412-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/412-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/412-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/412-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/412-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/412-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/412-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/412-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3056-4-0x0000000004AF0000-0x0000000004C0B000-memory.dmp

    Filesize

    1.1MB

  • memory/3056-1-0x0000000004A50000-0x0000000004AE6000-memory.dmp

    Filesize

    600KB

  • memory/5008-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-2-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB