Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 19:28

General

  • Target

    2024-03-05_15d867fcdd150e3fe6bc1597d6d8624a_cryptolocker.exe

  • Size

    60KB

  • MD5

    15d867fcdd150e3fe6bc1597d6d8624a

  • SHA1

    93d75ca1ce18ee498b8690e420036dd413f9385b

  • SHA256

    8cdd85c66ba982e491b8849f12629d459800fa5c2461962687a72e7bf56fddf8

  • SHA512

    16243787ff2353c6a7d9c9f893e62cd4a7b386c6b6e60c7439503052a5a76ac351641817fd9b4a7a0091a333744f06adc6896780464cf303bcfd2be507654055

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3rFC0w1L:ZVxkGOtEvwDpjcam

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-03-05_15d867fcdd150e3fe6bc1597d6d8624a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_15d867fcdd150e3fe6bc1597d6d8624a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2344
    • 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:3368

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          61KB

          MD5

          c31fc35082a950ebdecde6b4ba250e47

          SHA1

          4128ba236fe901f32e6209ecd1391de39641779c

          SHA256

          ebf6c850621463033388494d75ce2f2ecd262c81c35f269f80fedf8cef6972ee

          SHA512

          fdcf6c71fffdaa7eb0d41b0f8bafe29307212798de470feae2650592c8d2b3d5b3f51ac85094e418891ec3c5ea04b3eb8e58a4d97b73e5090f22e2655121f72b

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2344-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/2344-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/2344-3-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/3368-19-0x00000000021D0000-0x00000000021D6000-memory.dmp

          Filesize

          24KB

        • memory/3368-18-0x00000000020E0000-0x00000000020E6000-memory.dmp

          Filesize

          24KB

        • memory/3368-21-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB