Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 20:34

General

  • Target

    2024-06-06_be978a55287044b8de34e04fc66f8f5d_cryptolocker.exe

  • Size

    40KB

  • MD5

    be978a55287044b8de34e04fc66f8f5d

  • SHA1

    67e2e6cbfaf38ff0d1f3d8d40d9dbd7209a71a22

  • SHA256

    98fb975e0ac3a09b7ac20748637ea02229f57fb382afb79546bbfc73d433bd5d

  • SHA512

    a2ba35fa7fb9b1cf892ecf5e45873a7c0f80c7ed4f8ae69519bacbd8ca476eed9fca8a2b5fa4c978a14ce24ffab6a5b7b7b1af89a264ed2eaf7186af6c3bb54f

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYX54I:qDdFJy3QMOtEvwDpjjWMl7TC

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 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
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-06-06_be978a55287044b8de34e04fc66f8f5d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_be978a55287044b8de34e04fc66f8f5d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4472
  • 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=3852,i,1067197275908310731,12785105794523264014,262144 --variations-seed-version --mojo-platform-channel-handle=4236 /prefetch:8
    1⤵
      PID:3152

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            40KB

            MD5

            4a5281e441edff7b7e1f88ab52e7d950

            SHA1

            96b0d22e96c6ece3f67f9f0278d66c70862b672a

            SHA256

            fc0345414b7a5f7a01f104d665af421aea02665649a2b802b94d2c1fddcb18ce

            SHA512

            53876dddc0d2e91f0c3fb706e25bc2a30599236b2b14d395158d6af4197e58811c632dbcc67d2dd881542b845e87dc0c823831c83e22de512a2ef411f59afe9f

          • memory/3908-0-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/3908-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/3908-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

            Filesize

            24KB

          • memory/3908-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/3908-19-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/4472-16-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/4472-21-0x00000000005D0000-0x00000000005D6000-memory.dmp

            Filesize

            24KB

          • memory/4472-27-0x00000000005B0000-0x00000000005B6000-memory.dmp

            Filesize

            24KB

          • memory/4472-28-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB