Analysis

  • max time kernel
    141s
  • 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
    28/01/2024, 14:28

General

  • Target

    2024-01-28_9e889bb62157d26f31e9b31ceb21426d_cryptolocker.exe

  • Size

    64KB

  • MD5

    9e889bb62157d26f31e9b31ceb21426d

  • SHA1

    bf580658d84e7e0cd1d657fae0d4c12149fec1ba

  • SHA256

    c0373bc9b48ceb23af6f3fd3f380597d8dd31d24e95a4a0905c6168c99f7c673

  • SHA512

    bf48cad8c560ba0a237075392a3413404de77e579896bb84bfa910638cf2cb307b0e316e8e6c203d92d631eec950240aa421bf6d2f1f20144c71d879c9f150ff

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3hvLcbVi:ZVxkGOtEvwDpjcaw8

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\2024-01-28_9e889bb62157d26f31e9b31ceb21426d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-28_9e889bb62157d26f31e9b31ceb21426d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1032
    • 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:2476

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          64KB

          MD5

          11c4e61f08ae5fc94630878211344786

          SHA1

          d58db0440a5230a530aa5b9a03df60d445cad794

          SHA256

          1526718224bda8301ecd38698b46e7b2dcec74bfa420f7a8df18303ac67deb2f

          SHA512

          1b15b268c0252921a0557b3c3da4d8650f21cc96a039ba06d1a9394d4cac9bedf6c8cff2379014006a8237127603deb817375b6c4e39cbedac5117b90d568263

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1032-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/1032-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1032-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1032-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/1032-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/2476-19-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/2476-20-0x0000000000850000-0x0000000000856000-memory.dmp

          Filesize

          24KB

        • memory/2476-22-0x0000000000830000-0x0000000000836000-memory.dmp

          Filesize

          24KB