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Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/02/2024, 05:29

General

  • Target

    2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe

  • Size

    38KB

  • MD5

    c91af47ec876293a917223c696c0c0a9

  • SHA1

    d84749d970ff4921e01610bf6e254154a7ddba1c

  • SHA256

    d19cdfe515dc6baad319a245e9c559254e37e387d4c596ed44963a324afabbf4

  • SHA512

    9b9551f0d84a6a9ad6dea7da29fcd869d8ad1b4dd515d2ea66533f045b6ffe2bc1c1ab2a47453a7344de2352ac92d354ae170cd69d34bddc2b1d97a926f6c979

  • SSDEEP

    384:bgX4uGLLQRcsdeQ7/nQu63Ag7YmecFanrlwfjDUkKDfWf0w3sp8u5cZnfXsT7:bgX4zYcgTEu6QOaryfjqDDw3sCu5mXq7

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:2536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\hasfj.exe

    Filesize

    38KB

    MD5

    a1ed82e0add90ef1bf87d6c1c93e3bc3

    SHA1

    4b7d5c535299e4555a1c10684f760ee2b5e48424

    SHA256

    326bac7c2abf95594abc25166d95b818c755124802e8b0a3371da377520cefc7

    SHA512

    34a116e39229809a068de859c9f0459bb21554290cc93a87781ade4c1bff14cc060b8c28d70cb0f57a0f4b5d31b1beec17c342ba7e7c6ccdfbfc8f6e4fbfd295

  • memory/2204-0-0x00000000021E0000-0x00000000021E6000-memory.dmp

    Filesize

    24KB

  • memory/2204-1-0x00000000021E0000-0x00000000021E6000-memory.dmp

    Filesize

    24KB

  • memory/2204-2-0x0000000003150000-0x0000000003156000-memory.dmp

    Filesize

    24KB

  • memory/2536-17-0x00000000022C0000-0x00000000022C6000-memory.dmp

    Filesize

    24KB

  • memory/2536-19-0x0000000002200000-0x0000000002206000-memory.dmp

    Filesize

    24KB