Analysis

  • max time kernel
    140s
  • max time network
    147s
  • 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, 17:30

General

  • Target
    2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe
  • Size 39KB
  • Sample240125-v27ebacehk
  • SHA256 156804f2cb2aa2929a317836c58a7b6bd84cd311192a1cd1b5cdbfffd24e271e
  • 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 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_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2696
    • 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:3276

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 39KB
        • SHA256 47de8c60f74196b60d84064b1441c07937100ecf9d4cb0984b6739467eed60a7
        • MD5 SHA1 SHA512 SSDEEP

        memory/2696-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

        memory/2696-1-0x0000000002210000-0x0000000002216000-memory.dmp

        memory/2696-2-0x0000000002210000-0x0000000002216000-memory.dmp

        memory/2696-3-0x0000000002230000-0x0000000002236000-memory.dmp

        memory/2696-21-0x00000000004F0000-0x00000000004F3000-memory.dmp

        memory/3276-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

        memory/3276-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

        memory/3276-22-0x0000000000520000-0x0000000000526000-memory.dmp