Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/04/2024, 18:26

General

  • Target

    2024-04-23_9217a855a330a75c561e0fd946bda3ea_cryptolocker.exe

  • Size

    50KB

  • MD5

    9217a855a330a75c561e0fd946bda3ea

  • SHA1

    ec5b063df550fe840ed4adae3dac11ee9c903f81

  • SHA256

    e1da6ba84441bd1fe09bd80ab1ab0538140caa71e36ba4e97dbe32b324ff8997

  • SHA512

    d9798535d408318f3f042c19d4fe4f5163a399712cdc042aaf324395a01e81bba1f9a32a5993e54ca746c1174e7c8d6fd9fd1f765d5430c8d37d844c4df9fd17

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRp5jvbf:6j+1NMOtEvwDpjr8hhXj53f

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-04-23_9217a855a330a75c561e0fd946bda3ea_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-23_9217a855a330a75c561e0fd946bda3ea_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:792
    • 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:3696

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          50KB

          MD5

          0d241ab582eb471c14120f1e938a3a71

          SHA1

          7bf7976de839a546e090d25cfca217773264fdc2

          SHA256

          7d8ecfa802d62f10830bbad8025d4b56105ef1b5cb0e959722ddfe82c4d8e1bd

          SHA512

          3598f9c7e26c22249739b739fa5159ad2a2c8be26a0c838c0373db9621bd25034ffa4661553ebfd920bc807da07ebc0d4eb1acd04c0e16dc0781af609feb8254

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

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

          Filesize

          60KB

        • memory/792-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/792-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/792-3-0x0000000002100000-0x0000000002106000-memory.dmp

          Filesize

          24KB

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

          Filesize

          60KB

        • memory/3696-19-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/3696-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/3696-48-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB