Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/05/2024, 13:38

General

  • Target

    2024-05-17_dc03b51ac3e4cad6c997293bf6bb14ec_cryptolocker.exe

  • Size

    67KB

  • MD5

    dc03b51ac3e4cad6c997293bf6bb14ec

  • SHA1

    9e9339998f3a571fb6d2ab8775b6f93ee4c5b52b

  • SHA256

    b598907b0e7fb05829c8bbc0e6f27f7d91e7b3bf8ba62797210793e61b310746

  • SHA512

    3968104cf5c9d023120cb8689a7c4dc6c1c7404e0e0fd76669f2220f74b6bc8c54d445d0a6febac12410bb8dd35c766714232389541c66e86c49d5e63fc156e5

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIYD:6j+1NMOtEvwDpjr8ox8UDEpN/j7

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-05-17_dc03b51ac3e4cad6c997293bf6bb14ec_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-17_dc03b51ac3e4cad6c997293bf6bb14ec_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:996
    • 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:3468

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          67KB

          MD5

          470ae7a293d7e9ab80fdae92c858991d

          SHA1

          efafe74ca0f5981b0fc7b6ba0df6197711501968

          SHA256

          19cdfaf104db41abf1753f28626790e65698db0370a62b25236fee20f7c9f52d

          SHA512

          d4f038945f79cd06a5345e6b3ea65d8756b7ec68c971dd6e4bc9e394fd122766313f8f52c7a546d6c6686f7a7d0f650b635b970659a9d314064538a092429755

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/996-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/996-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/996-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/996-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/996-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3468-19-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB

        • memory/3468-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/3468-48-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB