Analysis

  • max time kernel
    143s
  • max time network
    156s
  • 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, 17:39

General

  • Target
    2024-01-25_e4ddd4de4ab282546388bba3f3c080aa_cryptolocker.exe
  • Size 45KB
  • Sample240125-v8rmfacgep
  • SHA256 4794205743fec20338d5432ebf4ffb7cc72a63c77bd4aa3d7ee0cbcae09599e5
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Kinsing

    Kinsing is a loader written in Golang.

  • Detection of CryptoLocker Variants 2 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_e4ddd4de4ab282546388bba3f3c080aa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_e4ddd4de4ab282546388bba3f3c080aa_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1000
    • 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:1916

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 45KB
        • SHA256 2ce6ad111a9ab18925fa902703392e32bbd06469ee80a94cf597b2b3295f00f1
        • MD5 SHA1 SHA512 SSDEEP

        memory/1000-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

        memory/1000-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

        memory/1000-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

        memory/1000-3-0x0000000000720000-0x0000000000726000-memory.dmp

        memory/1000-21-0x00000000004E0000-0x00000000004E3000-memory.dmp

        memory/1916-17-0x00000000004F0000-0x0000000000500000-memory.dmp

        memory/1916-19-0x0000000002060000-0x0000000002066000-memory.dmp

        memory/1916-22-0x0000000002150000-0x0000000002156000-memory.dmp