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Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/03/2024, 12:38

General

  • Target

    2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe

  • Size

    47KB

  • MD5

    869d44e2e607c166e74801e067756b18

  • SHA1

    2e1e7a4b6afa3a8089b0c057a12c94e22a38e8dd

  • SHA256

    1f99645a6818bc435e3dc9113b6d8e6a8bccad5d5a32f819669db64c0f77b9c4

  • SHA512

    5d063bbdf298707776ab5b8b543a6b8fced355e8efb90688ff1e2ba3d14278a2986460dea14610612f413e4fe221347999cd536be59d708d19a428b54946cf12

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556Blvj:X6QFElP6n+gJQMOtEvwDpjB0GIWSlvj

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3876
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:924

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    82b6ccd23658ca728dc6fc2c228ae734

    SHA1

    b44101b62102b30eb11a5dba6dd5373fa4e6bcb3

    SHA256

    3672b6847ba3434aa2242f59d4a93cf627926b51be30a7b386c7709225171758

    SHA512

    a75dea7dffa14cd3adeefbd8dce36d46e793f4d4876ce5cd0b0f2a4b7c38aa48a3aca5e652c830a3dac3f5e0994961dc6464be14e19e822f3d31592a61a21db4

  • memory/924-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/924-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3876-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3876-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3876-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB