Analysis

  • max time kernel
    168s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/01/2024, 06:05

General

  • Target
    2024-01-11_c6e5cd69b5574a2dac599cb4d9ad29ef_cryptolocker.exe
  • Size 50KB
  • Sample240112-gthjbsaaej
  • SHA256 a0bd1be48f67bb32b9ab447f370d2be4cc3b42a574767bfda99047f93aae516c
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-11_c6e5cd69b5574a2dac599cb4d9ad29ef_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-11_c6e5cd69b5574a2dac599cb4d9ad29ef_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5016
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:1240

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        lossy.exe

        • Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
        • Size 50KB
        • SHA256 7ccd1f88e6eec0031f8a81435995d9c5c04bb8d8bf59e07b8b793137410fba5e
        • MD5 SHA1 SHA512 SSDEEP

        memory/1240-23-0x0000000002130000-0x0000000002136000-memory.dmp

        memory/5016-1-0x0000000002140000-0x0000000002146000-memory.dmp

        memory/5016-2-0x0000000002030000-0x0000000002036000-memory.dmp

        memory/5016-0-0x0000000002140000-0x0000000002146000-memory.dmp