Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 19:33

General

  • Target

    2024-06-11_6e78779a8b96834055416bb9404ed652_cryptolocker.exe

  • Size

    70KB

  • MD5

    6e78779a8b96834055416bb9404ed652

  • SHA1

    ac87204fa47b0e383ce0c0322df1622a935056ee

  • SHA256

    5ba73faaac13e81dd94a8f0d80d6b0231937edf1dfc2125b1309bafb44a3b2d2

  • SHA512

    46b6e3b5cf493404a6ee063953c87dc105f20888002a8c98835e144cd02377321ab6c54d2b6de6321dac8ba364011d18071c88276e7c1ba39b5102a9a0c30df4

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/dy:i5nkFGMOtEvwDpjNbwQEI8UZDc

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-06-11_6e78779a8b96834055416bb9404ed652_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_6e78779a8b96834055416bb9404ed652_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4400
    • 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:1020

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          70KB

          MD5

          21a66f968c3974f19d4f90a5a14dbff7

          SHA1

          80bdbc122bf0ccbdc55e1fcad3afac5a7939fa78

          SHA256

          d61a018aeb9f63781f549088241d72670bd7078e1bc4f7fb7a32739d7e129d48

          SHA512

          a1ad7ddefeaa1d889cfc79ac2b7dfa9f0c30d7f9c5bac25cc28af42e73a89ec9d879fe760c1c2103e5dc2b0246ee0c314891991e6a4b94b848ed2bcd8dceb16f

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1020-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1020-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

          Filesize

          24KB

        • memory/1020-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4400-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4400-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4400-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/4400-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4400-16-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB