Analysis

  • max time kernel
    167s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 12:09

General

  • Target
    2024-01-06_4df0df11186f1cca7682c075fcf22c85_cryptolocker.exe
  • Size 122KB
  • Sample240107-pbhelsdcdn
  • SHA256 286c9152eb60201ae3ec9254c6baf7763cc2f0098a85533fa373dfaf0185006f
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-06_4df0df11186f1cca7682c075fcf22c85_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_4df0df11186f1cca7682c075fcf22c85_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3548
    • 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:1872

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 122KB
        • SHA256 cc284537b6157706c987a01eeb8a87f83b925244ce3b5ab2cbad56bd8da3ce0b
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misids.exe
        • Size 315B
        • SHA256 d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
        • MD5 SHA1 SHA512

        memory/1872-17-0x0000000000740000-0x0000000000746000-memory.dmp

        memory/1872-18-0x0000000000760000-0x0000000000766000-memory.dmp

        memory/3548-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/3548-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/3548-2-0x00000000004F0000-0x00000000004F6000-memory.dmp