Analysis

  • max time kernel
    93s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/10/2024, 22:30

General

  • Target

    2024-10-05_bd220991e6a3aaffd369ae4d2fb9804e_cryptolocker.exe

  • Size

    89KB

  • MD5

    bd220991e6a3aaffd369ae4d2fb9804e

  • SHA1

    1eb35f27c56443b3e6db5efd46428c778c54690f

  • SHA256

    4fad77fcfc812fbf0e2bbae68059d55be141d9a3f67e799641f76c385a827988

  • SHA512

    7e7b5c7190320a6d034657d72859d17f5ef1cc2e20a781c01e49f3f4475cc6c00b37c184171aba87f4b7d26be26a375124bdce6af31eab0eeb9eaa8664c96b2b

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjCW:zCsanOtEvwDpjS

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
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-10-05_bd220991e6a3aaffd369ae4d2fb9804e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-05_bd220991e6a3aaffd369ae4d2fb9804e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3628
    • 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:3936

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          89KB

          MD5

          2658060951f833a91ac586eca6ad0d55

          SHA1

          261fad0021bab7dea643996b8bcf48d42f0a4905

          SHA256

          8a3bfd0798e7149aee8ca0035d997e4a17dbfb2945fbdcd386f4a47e17076ec0

          SHA512

          16e884ed642b269d61c347f259011455b67edc20f10e764858f508dd8fd065a51d6b58e3fb7a839922e938765982c211b9eb7ad67441c75007064c26521e53e1

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3628-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3628-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/3628-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/3628-3-0x0000000000610000-0x0000000000616000-memory.dmp

          Filesize

          24KB

        • memory/3628-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3936-19-0x0000000000520000-0x0000000000526000-memory.dmp

          Filesize

          24KB

        • memory/3936-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/3936-48-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB