Analysis

  • max time kernel
    93s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 04:37

General

  • Target

    2024-06-10_3e7bfb1672f927c0d5c8b19678daa9c1_cryptolocker.exe

  • Size

    78KB

  • MD5

    3e7bfb1672f927c0d5c8b19678daa9c1

  • SHA1

    3ae0a5704a5fe715d4a2095e6f71c6493ad67efa

  • SHA256

    19e6abcaf6af252fa87f1cc602839ee01870af0b77ccad8aafe68d67e19fd825

  • SHA512

    d92c665141400404d04e3586059e087251844da0f98acfb6ed1f3d4cd9850e0d3e693e344a0acccff19a886a4217cb23c659ba8524dfed0e8327f8949b37c675

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KUa:ZVxkGOtEvwDpjcam

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-10_3e7bfb1672f927c0d5c8b19678daa9c1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_3e7bfb1672f927c0d5c8b19678daa9c1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3500
    • 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:512

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          78KB

          MD5

          131413826a114edaa30e91a1deb8191c

          SHA1

          aeb674dced35fd0da9d7ca6cdc86663fff5a8b53

          SHA256

          6a4104aefeeda5fbaea1965a106824e8162228d5ff4b1f216cbabdf5492f09aa

          SHA512

          55b3fdb4e7658b42b0e866893ebd281719d0f54c7cb9eccb55d48bae7aac4c62b21cb7791b966a812f464ec197d8d1ec7932ba1ebeb3b7eb8759271f22d103cb

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/512-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/512-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/512-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/3500-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/3500-1-0x0000000002140000-0x0000000002146000-memory.dmp

          Filesize

          24KB

        • memory/3500-2-0x0000000002040000-0x0000000002046000-memory.dmp

          Filesize

          24KB

        • memory/3500-9-0x0000000002140000-0x0000000002146000-memory.dmp

          Filesize

          24KB

        • memory/3500-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB