Analysis

  • max time kernel
    138s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 17:26

General

  • Target
    2024-01-25_3988b5e4f2fb15c93546addf5cd1b27c_cryptolocker.exe
  • Size 47KB
  • Sample240125-vzvbzabfa9
  • SHA256 6e0d7d203cc3c2bcc882d65f9d4f2ba2fc8f8f6d834df5a04de014e8aa5103bf
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Kinsing

    Kinsing is a loader written in Golang.

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-25_3988b5e4f2fb15c93546addf5cd1b27c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_3988b5e4f2fb15c93546addf5cd1b27c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4980
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3328

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 47KB
        • SHA256 a9a7ea91b5fbaeead4609bed6cf11c451099cb6d9e39662f3da647afa364e33e
        • MD5 SHA1 SHA512 SSDEEP

        memory/3328-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

        memory/3328-22-0x00000000021E0000-0x00000000021E6000-memory.dmp

        memory/3328-54-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/4980-0-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/4980-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

        memory/4980-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

        memory/4980-3-0x0000000002230000-0x0000000002236000-memory.dmp

        memory/4980-17-0x0000000000500000-0x000000000050F000-memory.dmp