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Analysis

  • max time kernel
    143s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    29/12/2024, 07:04

General

  • Target

    JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe

  • Size

    767KB

  • MD5

    a166eb129533ff066100521c83967fee

  • SHA1

    0aea2d705525c016d06231981dd40615962472b2

  • SHA256

    2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff

  • SHA512

    9b6c86d829a8c717323e410edf47a16d2ad12f73955f439686ccf84294b8824ee6ab225ce9beb68f9b7533cd5dc538da68f616df369a29b8b22f0b23866bf6f1

  • SSDEEP

    12288:qK7oNk9C8phXtqJ0gkcB4dqbuWYtGy/oPkK5d4qurCUbFKACSB9RGvgq:POGC8bBgzB4dqLi3oPBhUb0ACeRwg

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .ghas

  • offline_id

    miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1

  • payload_url

    http://zerit.top/dl/build2.exe

    http://fuyt.org/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. You can get and look video overview decrypt tool: https://we.tl/t-0SLhZxAjRX Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0445JIjdm

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2552
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2352
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\378337a3-ca3e-41d6-a1b7-9127398fe451" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2776
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2872
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2660

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    35d2bbfb18908b04a2d05d496277e533

    SHA1

    4a24f0e1a7c0e82aca74f6d1792be853e3603609

    SHA256

    880fc5552e9d9f51eb8f1fc02ee1015f5fbeb28e927346cb5d5d31878f8f46cd

    SHA512

    3a4374909c5210e677a2ee5b7bce53d5eb67bf6fbd44b27a6f9d20619fb3f9c18c11fd8dc04156d958c710d69ebc266cdec5137da6655747429ccbb847c34cc4

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    6c2f3deab4d8d94b49d4da80d7c8d369

    SHA1

    f3e435ce5632868efbccd0da8b7e317c0748ed6c

    SHA256

    e929c5b90461c14f3a6faf3ed4bd72b4375ae14c7e941529e74b88fd7163a8f1

    SHA512

    d1e7d8e1cb970ff92176d9b6dd169db80b2073f5f0e8149fba5037c88b6b915ded3e4b537cdf0e253cf972d45b0a35d5fdb0888d3bdf03ef5e20c61edf709e83

  • C:\Users\Admin\AppData\Local\378337a3-ca3e-41d6-a1b7-9127398fe451\JaffaCakes118_2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff.exe

    Filesize

    767KB

    MD5

    a166eb129533ff066100521c83967fee

    SHA1

    0aea2d705525c016d06231981dd40615962472b2

    SHA256

    2608cca1d1e41da46b57bb980872800892f8fee2bc9d3ebfb8df5ec8a9a7d2ff

    SHA512

    9b6c86d829a8c717323e410edf47a16d2ad12f73955f439686ccf84294b8824ee6ab225ce9beb68f9b7533cd5dc538da68f616df369a29b8b22f0b23866bf6f1

  • C:\Users\Admin\AppData\Local\Temp\Cab170A.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • memory/2352-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2352-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2352-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2352-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2352-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2552-7-0x0000000000320000-0x00000000003B1000-memory.dmp

    Filesize

    580KB

  • memory/2552-2-0x00000000006C0000-0x00000000007DB000-memory.dmp

    Filesize

    1.1MB

  • memory/2552-1-0x0000000000320000-0x00000000003B1000-memory.dmp

    Filesize

    580KB

  • memory/2552-0-0x0000000000320000-0x00000000003B1000-memory.dmp

    Filesize

    580KB

  • memory/2660-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-66-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-63-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-65-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2660-67-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2872-35-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2872-29-0x0000000000400000-0x00000000004CA000-memory.dmp

    Filesize

    808KB

  • memory/2872-28-0x0000000000360000-0x00000000003F1000-memory.dmp

    Filesize

    580KB