Analysis

  • max time kernel
    139s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2024, 13:41

General

  • Target

    2024-02-02_7e0578163d6520de9b92b6acacb9c30f_cryptolocker.exe

  • Size

    126KB

  • MD5

    7e0578163d6520de9b92b6acacb9c30f

  • SHA1

    dade80d288733df0a717101e41ca1fae53f91bae

  • SHA256

    0f824f84648b0c729f06c1ed357040b50d9c65c41d98f66a3b945bd3fac8ad0b

  • SHA512

    44b6b00bca332fc185ccf22b11687a7bf059df991189b56ad8d9bbc5d872e2eb125df8c1dfe7d3b2f0cb942c5b876912f07a588cffae535aea9fe86b5324a3e0

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//j8:vCjsIOtEvwDpj5H9YvQd2Ri

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-02-02_7e0578163d6520de9b92b6acacb9c30f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-02_7e0578163d6520de9b92b6acacb9c30f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:568
    • 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:3240

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          126KB

          MD5

          f595ad31d18a38b96ede467c56c033f5

          SHA1

          c06c782d262d4619f776e85da05cc1d737103f85

          SHA256

          0d58e64ae16966400ead89f0373b4021621569b13c658ef8d85905dc54c85026

          SHA512

          dd50a705ed7869c11b4fd2cd2052712cf32db852f9d5278efd84cf5bef7f5d8fb50673441c92781ba1b62667f48bcd0b877b4eff786f36753614c75789340d0c

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/568-0-0x0000000002190000-0x0000000002196000-memory.dmp

          Filesize

          24KB

        • memory/568-1-0x0000000002190000-0x0000000002196000-memory.dmp

          Filesize

          24KB

        • memory/568-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

          Filesize

          24KB

        • memory/3240-17-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/3240-18-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB