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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/05/2024, 20:09

General

  • Target

    2024-05-25_311a843c152f46615ddc8aeff4836ce9_cryptolocker.exe

  • Size

    52KB

  • MD5

    311a843c152f46615ddc8aeff4836ce9

  • SHA1

    08eef5f13e66db5035f45c59512162f6d3046193

  • SHA256

    989da34b64eea87c2295d8b3b87ad6300bfc7daf9c646721ee8240517eb801a6

  • SHA512

    7621b0321bded4a909c974a9c602fa7e781ae87a61543d221ed56b29cbcde51b27f6128d0f33f07d68a8b50303941cb3d5e5375b6ce2fdcd3ae3d7e9a2c86f2b

  • SSDEEP

    768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CS4Gj3:bgGYcA/53GAA6y37Q6dI+d5QGT

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-05-25_311a843c152f46615ddc8aeff4836ce9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_311a843c152f46615ddc8aeff4836ce9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2064
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:3580
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4176,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8
    1⤵
      PID:4300

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      53KB

      MD5

      b9311143b6b71f062e218aa787e903be

      SHA1

      78c2ca50013318601d1436858a50fdd4acc34cc9

      SHA256

      1a5ad04bacc0111658f9302879d9882f6f09772ad898bc25c5de7fdcd41ce977

      SHA512

      b62e3aec4eeb8adef5e0e874c917c1fd2a1c9de094f268b84a08084fc546772ce7bc83d170b73e4bd7b71e71c4a595314cabdad7ad452d6e629ecf14070d146b

    • memory/2064-0-0x0000000002210000-0x0000000002216000-memory.dmp

      Filesize

      24KB

    • memory/2064-1-0x0000000003010000-0x0000000003016000-memory.dmp

      Filesize

      24KB

    • memory/2064-8-0x0000000002210000-0x0000000002216000-memory.dmp

      Filesize

      24KB

    • memory/3580-17-0x0000000002160000-0x0000000002166000-memory.dmp

      Filesize

      24KB

    • memory/3580-19-0x0000000003150000-0x0000000003156000-memory.dmp

      Filesize

      24KB