Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 17:33

General

  • Target
    2024-01-25_9b5c4613dc241dfa68ecfa73cc7cf1d3_cryptolocker.exe
  • Size 46KB
  • Sample240125-v47svscffj
  • SHA256 e6d3aed6a3736cae8fc9dcf0840027917dadd03af9d53c32b0e3db7c023b9871
  • 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_9b5c4613dc241dfa68ecfa73cc7cf1d3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_9b5c4613dc241dfa68ecfa73cc7cf1d3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4712
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:3312

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 46KB
        • SHA256 760459c5a2a4f7ec497e6cfda15136d811a66104672690fd0d67f346dcbed6cf
        • MD5 SHA1 SHA512 SSDEEP

        memory/3312-17-0x0000000003010000-0x0000000003016000-memory.dmp

        memory/3312-23-0x00000000020A0000-0x00000000020A6000-memory.dmp

        memory/4712-0-0x0000000002350000-0x0000000002356000-memory.dmp

        memory/4712-1-0x0000000002350000-0x0000000002356000-memory.dmp

        memory/4712-2-0x0000000003150000-0x0000000003156000-memory.dmp