Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/05/2024, 03:40

General

  • Target
    2024-05-26_61474090329f1059a80f71f7cdda463c_cryptolocker.exe
  • Size 43KB
  • Sample240526-d8mvtade7y
  • SHA256 1d0716499cb9f92bae533c28a2e62bce98e174c468935ff7e7760e002dac2c5e
  • 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\2024-05-26_61474090329f1059a80f71f7cdda463c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_61474090329f1059a80f71f7cdda463c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1732
    • 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:1192

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 43KB
        • SHA256 3121acc954b895e4671c1a7385bb8621380d1ce33a9f7ac28199ebc1ab8a5046
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

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

        memory/1192-17-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/1192-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

        memory/1192-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/1192-49-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/1732-0-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/1732-1-0x0000000000740000-0x0000000000746000-memory.dmp

        memory/1732-2-0x0000000002100000-0x0000000002106000-memory.dmp

        memory/1732-9-0x0000000000740000-0x0000000000746000-memory.dmp

        memory/1732-16-0x0000000000500000-0x000000000050F000-memory.dmp