Analysis

  • max time kernel
    93s
  • 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
    13/10/2024, 04:03

General

  • Target

    2024-10-13_f338dc26f557790fe2c9247f0dde66b4_cryptolocker.exe

  • Size

    90KB

  • MD5

    f338dc26f557790fe2c9247f0dde66b4

  • SHA1

    45d296d78b0d968051e4aff4baa377208f10a195

  • SHA256

    4cd4bcadae7d4e9a92ce310f669ceffdf3eda52c10171237f6f91e7657522c9e

  • SHA512

    e26939452906dad381a93f4c5851ba349e433fffa950b0e004167aadffe79967357a1720813a31963de8bad70e4e1aff361af3b89bb141fc827ae1c9b3228f1e

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjQ9K:zCsanOtEvwDpjq

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\2024-10-13_f338dc26f557790fe2c9247f0dde66b4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-13_f338dc26f557790fe2c9247f0dde66b4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4464
    • 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:4756

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          90KB

          MD5

          b7b633c6b685726f1fdced7e9ca501f5

          SHA1

          8b4bf1abb630cc7ad42180ba0f9efc32f17d5774

          SHA256

          9448ea57cdaed7cec678d9330594b5b93dca4d2789a061948292eef805230f77

          SHA512

          2b26295e6db2dacaf9072ee8337bbc21b785c327ce6e8ac40df864d8f2b3107d7a51f0ae715b6c52036b98f790b2cf6bf403fc5ac688980a32b1f4064a18bf94

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4464-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4464-1-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/4464-2-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/4464-4-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/4464-16-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4756-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/4756-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4756-46-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB