Analysis

  • max time kernel
    111s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 17:33

General

  • Target

    2024-02-13_3229fb5067c0b6ac80e8782b08ffe118_cryptolocker.exe

  • Size

    54KB

  • MD5

    3229fb5067c0b6ac80e8782b08ffe118

  • SHA1

    761a7f1ff42940329c032918d7e8cdb08d96fd51

  • SHA256

    2d15515f160301a43dc258fea551e5c558d79f7e2ec5a69e51cfe24ec8d03731

  • SHA512

    71d099c3fa22c888062e11c02a861091ae878cd8d6e56380127752efd95b84259b0ae10fd1c3ac69f1ef1253727f1895cbeab92099b22ac97de7ec3a1e13d01c

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7Wwfl:6j+1NMOtEvwDpjr8oxE5

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\2024-02-13_3229fb5067c0b6ac80e8782b08ffe118_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_3229fb5067c0b6ac80e8782b08ffe118_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3044
    • 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:792

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          54KB

          MD5

          1a5e6f5fef6adaebd78513e066b10e40

          SHA1

          e2c216095b59a8512f1d535b79df1136e31b65c6

          SHA256

          a18b32342cc26eec916885d3d07a0b705afed5d0a4e0adbefd71483274b7398a

          SHA512

          0766389408caf2555b81b7267872e595899a45e1ee42e3fc165fdb5e34e98e9051bb0c082d6bafd092d49fa1c85d9cdd6cf7496509db512632ba5f429b77ee6f

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/792-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/792-20-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB

        • memory/792-22-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/792-51-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3044-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3044-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3044-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3044-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB