Analysis

  • max time kernel
    138s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 11:27

General

  • Target

    2024-05-10_28e4ae5c40e54c2fd2ba13d2be0b0a57_cryptolocker.exe

  • Size

    68KB

  • MD5

    28e4ae5c40e54c2fd2ba13d2be0b0a57

  • SHA1

    8982306d7c3f2d933f44552f928f02e324bf9a11

  • SHA256

    0268f0c010f4eea534de51ed7463b9a837a3654a2e977f053f8f6c95989d05ed

  • SHA512

    71966d9cc7a116f4a8e9297a18f83c05653cbe0cdc903a484e943ba9cddda7008725ab6d16ec014db54a216c21eaf2e9a3b7c357518a468e3ef0e113f8aa9e9a

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFW+:6j+1NMOtEvwDpjr8ox8UDEpN/jW+

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\2024-05-10_28e4ae5c40e54c2fd2ba13d2be0b0a57_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_28e4ae5c40e54c2fd2ba13d2be0b0a57_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:716
    • 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:2120

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\misid.exe

          Filesize

          68KB

          MD5

          8f4cd5015f756906ceff1668b2f27b5b

          SHA1

          d1aa30dffb924c8e9222c9beaa3613bf687594ee

          SHA256

          eeed92d5f63c86ebc3e7e7c9d04e1722321e2cdc86df21212b78665338bee948

          SHA512

          645df7567a217dc6c22adb32f9b989aa0368b6ce2733e291971ded20c6d3f986037991840af2e3d3097d8a4aa9ee9f2d66a19fa3055ba8c0941461915313777a

        • C:\Users\Admin\AppData\Local\Temp\misids.exe

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/716-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/716-1-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/716-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/716-9-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/716-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2120-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2120-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2120-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2120-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB