Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 11:57

General

  • Target

    2024-02-14_717c6a2396c292ed63b2bd0cd3e3b6c1_cryptolocker.exe

  • Size

    47KB

  • MD5

    717c6a2396c292ed63b2bd0cd3e3b6c1

  • SHA1

    5fc5ebdd015ac6039d84b8c80cba98160f6ee77f

  • SHA256

    d7b11c26e3400db3d74f9b62e5be6673a418999763a000c29f9b808dc9cebbc6

  • SHA512

    39842bc1fd0f7c9b8712ea1b1577e65ab2e31e89e5c1c7bb3ac1e1350a10b63b387edc4fbfd359f862c75d944041991b5c64b0faa3e30eda591885b506327835

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/7Ioqv3:XS5nQJ24LR1bytOOtEvwDpjNbP/Moqv3

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_717c6a2396c292ed63b2bd0cd3e3b6c1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_717c6a2396c292ed63b2bd0cd3e3b6c1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:556
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3884

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          47KB

          MD5

          a46bf0432978a27adcc406c80714f70b

          SHA1

          1901c3c80d727faa6a0355ebf70a6e274fd0f76f

          SHA256

          6c18e7ec8cebc2c99f14908c727815c73c5b1579622ee032a1e180030d058ebe

          SHA512

          895ec03271f18a5723bdbe0695497660657c76fca91377eea92b41dfffdca2aace11eb81b208a038fd5937ed174962e9e43c548072139d90428d6f2c50d0898c

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/556-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/556-1-0x0000000002320000-0x0000000002326000-memory.dmp

          Filesize

          24KB

        • memory/556-2-0x0000000002320000-0x0000000002326000-memory.dmp

          Filesize

          24KB

        • memory/556-3-0x0000000002240000-0x0000000002246000-memory.dmp

          Filesize

          24KB

        • memory/556-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3884-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/3884-22-0x0000000000570000-0x0000000000576000-memory.dmp

          Filesize

          24KB

        • memory/3884-48-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB