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Analysis

  • max time kernel
    144s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2024, 00:38

General

  • Target

    JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe

  • Size

    833KB

  • MD5

    879fe8251f7e362c8b786a1a1d03586c

  • SHA1

    2dc5de3cee375f4630e4d70ee371523e93c36f01

  • SHA256

    6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7

  • SHA512

    fc46f174dcde80fe8a4341c778e6dd2d2b7c32cdf8a3cfedc24b88b63dd8ee36d89cae9986d02980ce55c68fa3f282a86d093825ca5fa20bb1879eacadbac70e

  • SSDEEP

    24576:a4OqOuOCUS9cCh+goT9zxRA0EtQflzp9FEitw:aYUe3UgoT9PAbE79FEd

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .gtys

  • offline_id

    qwVQoIsE2xLety0oNWloOilSDuIBXJGK86LM3ot1

  • 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-fnn5kv33Vv 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: 0439JIjdm

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 18 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu 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).

  • 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 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1120
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4540
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ddbf9a90-68dc-404e-9b53-cb10084b5e27" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:4980
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3184
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:4316

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

    828c04331ab9bddaa649aebb9ae3881f

    SHA1

    72936818fe95f8d60eccb7eccfe4000ef0f8e846

    SHA256

    949a93b65168fbfcb92c1dac71f8a26418866595c927cba98b62d2d764f4385a

    SHA512

    c39d98da5f20a1e522e84e773e198f437e9ff986d61751b080e7ca651b8b27fa7f0605ac17c06df72942260c085a12fd5a6e9075afd4d67706bd05b32f47a8a4

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

    Filesize

    170B

    MD5

    ff46fa84fb1ec067a3a6d16d186715ce

    SHA1

    18d16c572127f08afa36f7e657c4119b5fbf9c9e

    SHA256

    ab9b453b9be70f6c42e1656a0262f64782317618fe4c97542264be7a81f75b37

    SHA512

    e4e29ca537ad38838f24664c61a5e5519d68ba55b621ee994d4f8a6830f1fdd771e83efa79c6b8f0ae1da54145b0430b9f87a77ded15484589c99abedd12263e

  • C:\Users\Admin\AppData\Local\ddbf9a90-68dc-404e-9b53-cb10084b5e27\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe

    Filesize

    833KB

    MD5

    879fe8251f7e362c8b786a1a1d03586c

    SHA1

    2dc5de3cee375f4630e4d70ee371523e93c36f01

    SHA256

    6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7

    SHA512

    fc46f174dcde80fe8a4341c778e6dd2d2b7c32cdf8a3cfedc24b88b63dd8ee36d89cae9986d02980ce55c68fa3f282a86d093825ca5fa20bb1879eacadbac70e

  • memory/1120-1-0x0000000002170000-0x0000000002204000-memory.dmp

    Filesize

    592KB

  • memory/1120-2-0x0000000002210000-0x000000000232B000-memory.dmp

    Filesize

    1.1MB

  • memory/3184-24-0x0000000000400000-0x0000000000514000-memory.dmp

    Filesize

    1.1MB

  • memory/3184-21-0x0000000000400000-0x0000000000514000-memory.dmp

    Filesize

    1.1MB

  • memory/4316-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4316-43-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4540-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4540-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4540-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4540-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4540-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB