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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/06/2024, 07:32

General

  • Target

    2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe

  • Size

    42KB

  • MD5

    7b88e03276361c117d0fa9ba5733025d

  • SHA1

    f453e4e9c50f768ea6227d81170344cf922ff808

  • SHA256

    b2c1109d34d7675149669cb97ff953577809a31b9a2e652aad754c31938576a2

  • SHA512

    a2a5d0119fe94a39b67e1d0399f42ec67e5540c6b589926b170159ae9995ded663d55101e44b9acb7b4fca488f1fd2c5b2933e027d9b5d37bb6239474e5d1ea5

  • SSDEEP

    768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKoWv:ba6YcA/Xk3wXFXSqAJb

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1144
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:5092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    8dd1728a343985645c4bc04f40a016e9

    SHA1

    e857139bbf73ec91b38e065508764e678b4ff341

    SHA256

    4d020e156c94e6caf5d5b0f6786b3661f6377b794a8c647503d294ee5cac1d3a

    SHA512

    70ec36ec2749e421dcf58ff029e4e767a1f764bce5d7024e9c11eab2453a8b1800924e673e38390b6f82f0ad973889cc83f0a1ac6a1fa6c98df21ab53ee2a5db

  • memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/1144-1-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/1144-2-0x0000000003150000-0x0000000003156000-memory.dmp

    Filesize

    24KB

  • memory/1144-9-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/1144-18-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/5092-16-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/5092-26-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/5092-27-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB