Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 06:45

General

  • Target
    2024-06-10_f22bf37ce5c9855de2bb18a10e46b1c7_cryptolocker.exe
  • Size 60KB
  • Sample240610-hh4svsdd3v
  • SHA256 456b485dbe06b9fbdc211a9f19b8578b1d21c9d62cdc25724391093a0d16ef56
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-06-10_f22bf37ce5c9855de2bb18a10e46b1c7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_f22bf37ce5c9855de2bb18a10e46b1c7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3156
    • 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:1756

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 60KB
        • SHA256 e5a9af8e48bf8f1c0a914ab901de63565b01c4e813ab1791385d790858dacbe4
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

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

        memory/1756-26-0x0000000000840000-0x0000000000846000-memory.dmp

        memory/1756-20-0x0000000002070000-0x0000000002076000-memory.dmp

        memory/1756-18-0x0000000000500000-0x000000000050B000-memory.dmp

        memory/1756-49-0x0000000000500000-0x000000000050B000-memory.dmp

        memory/3156-0-0x0000000000500000-0x000000000050B000-memory.dmp

        memory/3156-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

        memory/3156-9-0x00000000021C0000-0x00000000021C6000-memory.dmp

        memory/3156-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

        memory/3156-17-0x0000000000500000-0x000000000050B000-memory.dmp