Analysis

  • max time kernel
    139s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/10/2024, 08:51

General

  • Target

    2024-10-18_b4553918c8ad11c02d4eeab207bee4d6_cryptolocker.exe

  • Size

    76KB

  • MD5

    b4553918c8ad11c02d4eeab207bee4d6

  • SHA1

    7231b66c62119e003c6801ff26e8e2d32c0cc506

  • SHA256

    1ccd1882763d450aacd43a6d57b96a8bad8ea442af63a76c9543b14dc25ac8a3

  • SHA512

    20acc1e47517b56231bb54cf9db7ddcee348f8cda13e3e1ee2e93c40b9169bd1506360e6152b0be1f8ff8436aee7a141f70ec6f026bcf359da3732ce456d95a2

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWaC:vCjsIOtEvwDpj5H9YvQd2m

Score
7/10

Malware Config

Signatures

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-18_b4553918c8ad11c02d4eeab207bee4d6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-18_b4553918c8ad11c02d4eeab207bee4d6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:3172

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          77KB

          MD5

          40fc7a64ea92614704754f826e03d0db

          SHA1

          ba0d39276faae14375a76818b9bdc5b67c354c11

          SHA256

          b3861be21fb9d4f7ab649264a94c60dfafc795fe66ce2a933d6a5f8dff54b647

          SHA512

          fefb7da96e372b4bb6b745866ec43ab9b513ea29b3d6609900d3a5af66e2c55ad584798e66d7ac065b5dbd2b833f529251579adf9ce32f32baeee8f256503982

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1512-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1512-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1512-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3172-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/3172-18-0x0000000000590000-0x0000000000596000-memory.dmp

          Filesize

          24KB