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Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2024, 10:04

General

  • Target

    JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe

  • Size

    838KB

  • MD5

    361d9b1bee71debf8d966051c0369a9a

  • SHA1

    757949978d35abf2d24b77a4497e19a02a999307

  • SHA256

    bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9

  • SHA512

    2c859936590be2be37e3460378d8d832dec16add1ce87bb70c9cdf84e080fc0bde1c4444121890a32346ed56384060171e06aa208c27d0a7027aa017af23ef83

  • SSDEEP

    12288:Y/IZf5Of+cXoWFfvSn8tcJtkW5lvL1QjSLAPv8SzZtZaAkmEjPR5y7j:Y/0ROfQ0tGsW5hL64u8SzHiHLR5q

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .tuid

  • offline_id

    LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1

  • 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-FglTTmgzZT 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: 0440tOjkfd

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_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5088
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.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:2036
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\40c00c89-66e9-41f7-b57d-56bfd481b5f0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:116
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2144
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2944

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

    cc36580cfc6efce67782656ca4d9d400

    SHA1

    4d8d3b44edbc1d4d70b4e8330f2338002d43cf11

    SHA256

    afa262312eb6443352b67a7cd9b856ff83a2fbfb56149cfd32a9b0f4e433a5d2

    SHA512

    c0d694b5b280418c17ce500aaf6037104a84bfe5a9b868b6c39415659be9dd75c22bcf6b3ff5da7a7f0253cdb41405c014811fe2504c3d65030b411f81a883dc

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

    Filesize

    170B

    MD5

    6705d45e00093d3493ca9854220f7b11

    SHA1

    097fc167c50fc4962cfcc9c4c3b4e64b8b7abd32

    SHA256

    e1c1c34a83ca8aa096d476ef0e11418d4d2e18f13791e1c4890b1751560d88aa

    SHA512

    a7e7e29608c68d1f17c5d153f35f2a319c862f0ba750c787d82e3c31aadc00b2aa7147093f120479d59dca31bea9064c7ed66dcedf8090e89ca62b76841d37c0

  • C:\Users\Admin\AppData\Local\40c00c89-66e9-41f7-b57d-56bfd481b5f0\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe

    Filesize

    838KB

    MD5

    361d9b1bee71debf8d966051c0369a9a

    SHA1

    757949978d35abf2d24b77a4497e19a02a999307

    SHA256

    bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9

    SHA512

    2c859936590be2be37e3460378d8d832dec16add1ce87bb70c9cdf84e080fc0bde1c4444121890a32346ed56384060171e06aa208c27d0a7027aa017af23ef83

  • memory/2036-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2036-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2036-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2036-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2036-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2144-19-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/2144-23-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/2944-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2944-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5088-1-0x00000000005E0000-0x0000000000672000-memory.dmp

    Filesize

    584KB

  • memory/5088-2-0x0000000002200000-0x000000000231B000-memory.dmp

    Filesize

    1.1MB