Analysis

  • max time kernel
    135s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 03:40

General

  • Target

    2024-06-01_6655daa7307b0eea2da47ed00a251816_cryptolocker.exe

  • Size

    47KB

  • MD5

    6655daa7307b0eea2da47ed00a251816

  • SHA1

    ebe9828bd2cc39b57853fa69149757255ecf345e

  • SHA256

    d2c0381a7aec70f25b599f23d74e3d34802a84679da0d63987e5b150f4fe2544

  • SHA512

    5106eaebf561f53fb01f9e9ff465282376220385a38ae8d6791e8b83ad85ce0b82622ae52740460db41acc157956ae9895245b0ddabd8bfb49605dc3fbccf655

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRhv:xj+VGMOtEvwDpjy+TRhv

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-01_6655daa7307b0eea2da47ed00a251816_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_6655daa7307b0eea2da47ed00a251816_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3644
    • 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:456

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          47KB

          MD5

          e86b7d7557a988708678fa9488d12213

          SHA1

          ff82c559bf9a56ca135ac33167498b6172e1998a

          SHA256

          9576b10ada5e0e564bb8e7bb819ea8af0e9445dd7c980e6cd91769105e23a358

          SHA512

          ee54b2c4919084ba4ad68c0e01094af121aa51f386dbc20ae6d3ea55f13d0c5ef07dd66722e6d2bd542a3666d6d72de61ef3651f1eeb936d04640504452650f5

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/456-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/456-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/456-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/456-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3644-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3644-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/3644-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/3644-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/3644-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB