Analysis

  • max time kernel
    143s
  • max time network
    155s
  • 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, 17:24

General

  • Target
    2024-01-25_23c9a9b3341332f20424508270cfeb91_cryptolocker.exe
  • Size 100KB
  • Sample240125-vytn2sbeh4
  • SHA256 911fbfd9379eab63dacabff197e62febdc37f6f0878d42dd8070e9b64fe3c20f
  • 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_23c9a9b3341332f20424508270cfeb91_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_23c9a9b3341332f20424508270cfeb91_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1096
    • 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:1168

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 100KB
        • SHA256 b90b2c146129de55dcfcd6035f13aa0fbd1e30483409c5b7dc2473e91bba72d6
        • MD5 SHA1 SHA512 SSDEEP

        memory/1096-0-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/1096-1-0x0000000000670000-0x0000000000676000-memory.dmp

        memory/1096-2-0x0000000000670000-0x0000000000676000-memory.dmp

        memory/1096-3-0x0000000002080000-0x0000000002086000-memory.dmp

        memory/1096-17-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/1168-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

        memory/1168-19-0x0000000002000000-0x0000000002006000-memory.dmp

        memory/1168-54-0x0000000000500000-0x000000000050F000-memory.dmp