Analysis

  • max time kernel
    134s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/06/2024, 09:38

General

  • Target
    2024-06-03_824b5f52212de8a5cca29af677d5e9e3_cryptolocker.exe
  • Size 58KB
  • Sample240603-lmgexaac7z
  • SHA256 fd5c10880544bc0005cebd6fb0b8b8a73a5bb567495e27b81dee77cbccf0d404
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 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
  • 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\2024-06-03_824b5f52212de8a5cca29af677d5e9e3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_824b5f52212de8a5cca29af677d5e9e3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2920
    • 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:4220

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 58KB
        • SHA256 9c468955df2ae30e52ede3c714879a71ca4e1cef8a7fd9e4babd58fb453daa12
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

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

        memory/2920-0-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/2920-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

        memory/2920-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

        memory/2920-9-0x00000000021C0000-0x00000000021C6000-memory.dmp

        memory/2920-17-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4220-18-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4220-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/4220-26-0x0000000000490000-0x0000000000496000-memory.dmp

        memory/4220-49-0x0000000000500000-0x0000000000510000-memory.dmp