Analysis

  • max time kernel
    94s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/06/2024, 04:33

General

  • Target
    2024-06-13_bc1dc3e8560b9b4e58d77f8c6ca28e3f_cryptolocker.exe
  • Size 73KB
  • Sample240613-e6qpcsxhjp
  • SHA256 14b6714af27882254411d490470d48eef08e9d2d05ba0285030e3ba7e1dda7a4
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-13_bc1dc3e8560b9b4e58d77f8c6ca28e3f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_bc1dc3e8560b9b4e58d77f8c6ca28e3f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1632
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4996

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 73KB
        • SHA256 494c794fa70ae5718d8ece322e6e3202ca20dbcee1329dd7091e03407cd5fbbc
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misids.exe
        • Size 315B
        • SHA256 d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
        • MD5 SHA1 SHA512

        memory/1632-0-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/1632-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

        memory/1632-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

        memory/1632-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

        memory/1632-19-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4996-21-0x0000000001F70000-0x0000000001F76000-memory.dmp

        memory/4996-27-0x0000000000670000-0x0000000000676000-memory.dmp

        memory/4996-49-0x0000000000500000-0x0000000000510000-memory.dmp