Analysis

  • max time kernel
    129s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/06/2024, 04:24

General

  • Target

    2024-06-04_05adeaeeba564c2f66b1941521d0c466_cryptolocker.exe

  • Size

    44KB

  • MD5

    05adeaeeba564c2f66b1941521d0c466

  • SHA1

    8dd5818c2926c78127e29dc1d1dba9d31890e4f4

  • SHA256

    5af446dbe2d5de25ac5508a23661ae826de2e6942b98069540d3bc65be4e4ac7

  • SHA512

    225b1656a8218e582f86a21c1462bae76b5a7045adc1f88e4407bacf3673507d08bdec05a2f3130c70a4c5c800e23156b357cf41c10973148f0ed1815291f263

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aDi:6j+1NMOtEvwDpjrRV

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-04_05adeaeeba564c2f66b1941521d0c466_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-04_05adeaeeba564c2f66b1941521d0c466_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4544
    • 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:1428

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          44KB

          MD5

          6f278b8dd3aa249d3fa061cdac119f13

          SHA1

          ef4d68bb6b061e78bee0a27e4d3c432bf140efaa

          SHA256

          215e67dfa2c2d5ffea1c0b95919503d065796109546ba4047186c07f36a53155

          SHA512

          690101859547683c68c6a15b9d1dbb929d96415769f883264767c72d72a27156401ae2e507a089c828a30e92cac8f6ab0bfab3e26bb2b2997026d6209c6527ca

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1428-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1428-20-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/1428-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/1428-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4544-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4544-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4544-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4544-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4544-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB