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Analysis

  • max time kernel
    153s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/03/2024, 04:32

General

  • Target

    2024-03-09_391f214fc4e56de2da8a8642385ff866_cryptolocker.exe

  • Size

    41KB

  • MD5

    391f214fc4e56de2da8a8642385ff866

  • SHA1

    cf17f8892b046791d9b0d03a5043788e9d6b15b1

  • SHA256

    91373d2c09bbfbf7784ea38c9c68fddad2d2f5e578477e076ddfc140c88ff6de

  • SHA512

    e93f88bf5b7b8f31db558407573e6aaad8e4a753fe4506fa2d41c4778a5f7dab93a2c88345750ac6b25858ba5c8af8b3743f1ef6a4b4b27d208e7f8768ef5233

  • SSDEEP

    384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3NbZM+iv:bAvJCYOOvbRPDEgXrNekd7l94i3p+b

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 2 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\2024-03-09_391f214fc4e56de2da8a8642385ff866_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-09_391f214fc4e56de2da8a8642385ff866_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Users\Admin\AppData\Local\Temp\demka.exe
      "C:\Users\Admin\AppData\Local\Temp\demka.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3752
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3744 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1384

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      41KB

      MD5

      edb7f5393757c9048cae4d0ceac5aaa0

      SHA1

      428600dcbdeb9bcc4924e6735f7647375a7400a8

      SHA256

      9e685d488ffe219883ca99191497c08725b56d6bcde6fc1da0dd7534f46242ba

      SHA512

      1f21fc46f02b452ff0b723af10336788ab2ab4b4005ac961ae58f84063e3127a25a4c182f525824fc8ec0a790451c56bcc2a19b00b7932bb09dc61741ea8c3ae

    • memory/1128-0-0x0000000002350000-0x0000000002356000-memory.dmp

      Filesize

      24KB

    • memory/1128-1-0x0000000002350000-0x0000000002356000-memory.dmp

      Filesize

      24KB

    • memory/1128-2-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/3752-18-0x0000000000600000-0x0000000000606000-memory.dmp

      Filesize

      24KB