Analysis

  • max time kernel
    149s
  • max time network
    150s
  • 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, 03:38

General

  • Target
    2024-06-13_778e610b760ad14357d7822e1a9a039e_cryptolocker.exe
  • Size 84KB
  • Sample240613-d698bswglm
  • SHA256 2a730e400a0938ee08544109a3248cd1fb3058172233c229e9e1309426c29303
  • 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\2024-06-13_778e610b760ad14357d7822e1a9a039e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_778e610b760ad14357d7822e1a9a039e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2568
    • 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:1504

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 84KB
        • SHA256 105e9eb2913681ecf4eecb2c7e2b7fb26176e02a4638f06f3cf94e8c27be93c3
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

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

        memory/1504-16-0x0000000000500000-0x000000000050E000-memory.dmp

        memory/1504-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

        memory/1504-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

        memory/1504-47-0x0000000000500000-0x000000000050E000-memory.dmp

        memory/2568-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

        memory/2568-0-0x0000000000500000-0x000000000050E000-memory.dmp

        memory/2568-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

        memory/2568-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

        memory/2568-17-0x0000000000500000-0x000000000050E000-memory.dmp