Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01/06/2024, 18:25

General

  • Target

    2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe

  • Size

    45KB

  • MD5

    420d54ff31a7ef2e05ff4e0b643173db

  • SHA1

    64af9500e89f5313145734612c8af0202dd4f51d

  • SHA256

    35d9637bd9b44fcaedc53e7f72f1289741bd266e04c0c29b95aa389a05cfaa5f

  • SHA512

    b2be81a02c58320bd274888b9ac5a47a5bdf3f191582b9aa8d0980b3d918434553dd79814d316bf5373ba040c417b678ed32fe4f868bd00a9be7294af1cc8adc

  • SSDEEP

    768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphq6:bc/y2lkF0+Beq6

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2512

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\rewok.exe

    Filesize

    46KB

    MD5

    0130fa94f4534cb6aba36f627d655c17

    SHA1

    3a5bedff9d2a34118bd4fe6b33ca3c6bc7be1f58

    SHA256

    6d4e0e7b1ca6d5c6c4ded617d32552680d44ea5b87917a530956a763615883b2

    SHA512

    07cac0e3aec5e95f00490a55ca0222e14f05c0ed47f300d213fead920918c8f40342eee547d2be6f0973f80c4c3b0351b844ea96539e6bea0b72ac3c5aaee91e

  • memory/2276-8-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2276-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2276-0-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2512-23-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB