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Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/02/2024, 20:36

General

  • Target

    2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe

  • Size

    46KB

  • MD5

    655aa0838c3b556d5fff5a46fcb0070f

  • SHA1

    1e353cd5797902a53a2c998f57637040fdc9009e

  • SHA256

    96dd854d17bbad6440d7b38d50f7fba63c4f0bfa5813510454576f4f39b7127d

  • SHA512

    d42bdcb51a304ecc635cb2e12209d2bf891680ac0ad485426ed0a07f3239e05590641d253ee259f0927f911440d6daeb32c8fbe2c10602eacc84f5ca6b43584a

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556yPRZr:X6QFElP6n+gJQMOtEvwDpjB0GIWvPRF

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\2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4628
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4812

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    46KB

    MD5

    3b30079b587edf9244262b7f0eef666f

    SHA1

    d6074414b2dc220aa019c6aad2c3b2e36c4b2b40

    SHA256

    d4243773224468b10c4e467617452a8e68a53100b13dd357ca6584c3a6d79439

    SHA512

    c592d9756e354333f636d226c345928d4c89df05c6563172b560d84c077aae93bbbbe5404bf2ca6b4bdac98da5ad67d1902862305dc0d55420067e8d9f330522

  • memory/4628-0-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4628-1-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4628-2-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/4812-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4812-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB