Analysis

  • max time kernel
    151s
  • max time network
    150s
  • 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, 15:37

General

  • Target
    2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe
  • Size 39KB
  • Sample240125-s2mnsshhb2
  • SHA256 483ff53cc00c6235f8b83e319990075fc0865419c19c5eebd47c911f89e8b6a8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Kinsing

    Kinsing is a loader written in Golang.

  • Detection of CryptoLocker Variants 1 IoCs
  • 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\2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4008
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:3268

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        hasfj.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
        • Size 39KB
        • SHA256 c2dbc92d10e4900ccb46e6e8b0884402b618cc2946bc2c66d90666d00168a8ff
        • MD5 SHA1 SHA512 SSDEEP

        memory/3268-18-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

        memory/3268-17-0x0000000002D60000-0x0000000002D66000-memory.dmp

        memory/4008-0-0x0000000002260000-0x0000000002266000-memory.dmp

        memory/4008-1-0x0000000002260000-0x0000000002266000-memory.dmp

        memory/4008-2-0x0000000003150000-0x0000000003156000-memory.dmp