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Analysis

  • max time kernel
    140s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2024, 21:37

General

  • Target

    JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe

  • Size

    847KB

  • MD5

    1ef5d68fbad4354fd8314d3a6e209ee5

  • SHA1

    f6c0a9281bfe0a528e2059e1330d0f690276279c

  • SHA256

    f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8

  • SHA512

    6eb0c85ca1d5b7fb32a3dd963dd7aaa5c8a23b8471f98f48e76ac3866f4c7b9eb69b26fd69290831ed13530596ff47e39615500b37726adbc74e93a6487d16ed

  • SSDEEP

    24576:Nm3sShZV2UMDg5ydwfGe1KYiDgMe0P6DKk3Eh:43jZBMM5ydwl19z0yD7U

Malware Config

Extracted

Family

djvu

C2

http://ugll.org/fhsgtsspen6/get.php

Attributes
  • extension

    .ifla

  • offline_id

    e8w5MeiBrZVoHLoloPm9MNlKBzXH70BB3B2KQ7t1

  • payload_url

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

    http://ugll.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-2w6I3WpXEh 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: 0478JIjdm

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 14 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_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2120
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\aff44c24-21dd-490b-a0da-23888e890b9d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2988
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2732
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2928

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

    ef8fbd2a534c54e564286569551c46bb

    SHA1

    b18c0bf03d66447c623b0f81d2613b184eb7bd74

    SHA256

    720cc66c053f7e3305f0b91fec8c336a0763fdc7056409c98eb1991562370ae7

    SHA512

    1d47c254c77599a8836877865ccce21ebb1df09e9a33b6d1cd979e4b524afd8a9b79b400dd9c1031cc07045eb1e19552c49e6b7a2a2d614f480c2ddebdb458cf

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

    Filesize

    170B

    MD5

    b07ea6196e0eea730148bdb1eda0205e

    SHA1

    85c7bc66e3ba314bbf22b42d84e89a242e8586b5

    SHA256

    be3ee6c4a3003ac3f976fb219d31ee074fa8239959def2860b3cd059e07642e2

    SHA512

    c0892a6775bb59f44fe61a4691dc4b40e2498c35057d6dc3e863868e05ac81eb52fafb99e271c2b97ef89dc51c26955188891a288cf25db156eeb0e18bcd5711

  • C:\Users\Admin\AppData\Local\Temp\CabE456.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\aff44c24-21dd-490b-a0da-23888e890b9d\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe

    Filesize

    847KB

    MD5

    1ef5d68fbad4354fd8314d3a6e209ee5

    SHA1

    f6c0a9281bfe0a528e2059e1330d0f690276279c

    SHA256

    f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8

    SHA512

    6eb0c85ca1d5b7fb32a3dd963dd7aaa5c8a23b8471f98f48e76ac3866f4c7b9eb69b26fd69290831ed13530596ff47e39615500b37726adbc74e93a6487d16ed

  • memory/2120-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2120-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2120-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2120-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2120-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2124-1-0x00000000002E0000-0x0000000000372000-memory.dmp

    Filesize

    584KB

  • memory/2124-0-0x00000000002E0000-0x0000000000372000-memory.dmp

    Filesize

    584KB

  • memory/2124-6-0x00000000002E0000-0x0000000000372000-memory.dmp

    Filesize

    584KB

  • memory/2124-2-0x0000000004530000-0x000000000464B000-memory.dmp

    Filesize

    1.1MB

  • memory/2732-28-0x0000000002C00000-0x0000000002C92000-memory.dmp

    Filesize

    584KB

  • memory/2928-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2928-43-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2928-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2928-45-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2928-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2928-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2928-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2928-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2928-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB