Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 02:30

General

  • Target

    2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe

  • Size

    65KB

  • MD5

    76a21aa24a697aab57e05a71ac670bc7

  • SHA1

    d1aae97b893814dd866f0a651ff79263db5ae0be

  • SHA256

    4f57ceb7aaedb596526c77e313c1156ba26e53135259d741d19df8c84822d656

  • SHA512

    2f1c9cac8137bfe8fb5cfea9d29d3be9a6573934bd38c839870578d67e1d95829b3de17536945e30b69916b93b85ef5b0db74410774ae5aa449c43bbfa67cd73

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIzY54:TCjsIOtEvwDpj5HE/OUHnSMZ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3612
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:1484

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          66KB

          MD5

          b47915199431792d4ca5ee5290d37a01

          SHA1

          ffd297a34c57f4ef3a5aba343c10b9a366102af7

          SHA256

          0f9a7383b8d217f49bc4d60cfde7cdccd17a995bfb8af1d6f6b38138f3306c49

          SHA512

          5e03155b0a4e1a1062448b8fa24cc8d129204eb8ff7a4e180dce71e8813ab787b96c9c011caf9dde79b60835bafb93e6c1419ed3b327e2a4e15b134a2d243cfe

        • memory/1484-17-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/1484-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1484-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/1484-27-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3612-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3612-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/3612-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

          Filesize

          24KB

        • memory/3612-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/3612-25-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB