Analysis

  • max time kernel
    136s
  • max time network
    140s
  • 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, 01:47

General

  • Target
    2024-06-13_8248c3cb0de2cfe43a0757504be06313_cryptolocker.exe
  • Size 70KB
  • Sample240613-b7kb7azdpc
  • SHA256 f50d7a44176ab1323ca33be3a9df308a530c167f09554ff56528614c85f3e0db
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-13_8248c3cb0de2cfe43a0757504be06313_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_8248c3cb0de2cfe43a0757504be06313_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1832
    • 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:3544

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 70KB
        • SHA256 59ddef3a100183a985b1e717d5ad4a7c356017431bd238579acc38f55a737b43
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

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

        memory/1832-0-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/1832-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

        memory/1832-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

        memory/1832-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

        memory/1832-18-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/3544-16-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/3544-20-0x00000000020D0000-0x00000000020D6000-memory.dmp

        memory/3544-21-0x0000000002100000-0x0000000002106000-memory.dmp

        memory/3544-49-0x0000000000500000-0x000000000050F000-memory.dmp