Analysis

  • max time kernel
    93s
  • max time network
    94s
  • 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, 04:36

General

  • Target
    2024-06-13_eb243b2c8cf0f4c8213eca248b6460b7_cryptolocker.exe
  • Size 96KB
  • Sample240613-e77z2avame
  • SHA256 819e08efe10c2012f28cf892342e4a016dbaa895a398ce12efa00e5268a096d6
  • 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\2024-06-13_eb243b2c8cf0f4c8213eca248b6460b7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_eb243b2c8cf0f4c8213eca248b6460b7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1044
    • 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:5080

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 96KB
        • SHA256 bd8cedb9bdff0446414134fc342cf31c1ae869f35b1de12d6aa345d629d2b3c7
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

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

        memory/1044-0-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/1044-1-0x0000000000670000-0x0000000000676000-memory.dmp

        memory/1044-2-0x0000000000670000-0x0000000000676000-memory.dmp

        memory/1044-8-0x0000000000760000-0x0000000000766000-memory.dmp

        memory/1044-16-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/5080-18-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/5080-21-0x00000000005D0000-0x00000000005D6000-memory.dmp

        memory/5080-26-0x00000000005B0000-0x00000000005B6000-memory.dmp

        memory/5080-49-0x0000000000500000-0x0000000000510000-memory.dmp