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, 02:31

General

  • Target

    2024-06-11_79eee3cf77bb96d9f8e4105834b46f0c_cryptolocker.exe

  • Size

    86KB

  • MD5

    79eee3cf77bb96d9f8e4105834b46f0c

  • SHA1

    a8857dec46fcd2e9c30f5a906159b1c468f42954

  • SHA256

    638edf8d1b0defd4f6b53d71c4e4c8b53c605d988a2c810c87298a59bf3e659b

  • SHA512

    e887cc31fbcf04b4640639ccc20943beea926130ac9fd7d4f79d57085d9c1a69afbc962877029443859346ccf58b919ab06f01cc64151c95c896b461c9c22640

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrC+4:TCjsIOtEvwDpj5HE/OUHnSMa

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_79eee3cf77bb96d9f8e4105834b46f0c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_79eee3cf77bb96d9f8e4105834b46f0c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4120
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2440

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          86KB

          MD5

          23425bbea873cfff0cc134c11c546966

          SHA1

          64b80127a205d333f6ac5703b95e8a57875a350f

          SHA256

          0415aa0d9229d90b7ee5b6d5b75eea57a51dfdc4a8d0177099351a8487ad1895

          SHA512

          8d051905e8021fc866405aafa23db5deb4f9a12d6cf6cdddb8fd91ec28d105130f2cacf2e4737c7ca79e45af9a4e4e69cf5f586ce1523792e86cf2e205b4b1a6

        • memory/2440-18-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/2440-20-0x0000000000870000-0x0000000000876000-memory.dmp

          Filesize

          24KB

        • memory/2440-26-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/2440-27-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/4120-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/4120-1-0x0000000000800000-0x0000000000806000-memory.dmp

          Filesize

          24KB

        • memory/4120-8-0x0000000000800000-0x0000000000806000-memory.dmp

          Filesize

          24KB

        • memory/4120-2-0x0000000000820000-0x0000000000826000-memory.dmp

          Filesize

          24KB

        • memory/4120-17-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB