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Analysis

  • max time kernel
    148s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 12:36

General

  • Target

    2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe

  • Size

    61KB

  • MD5

    f79691dece111eddd34fb001718b7452

  • SHA1

    ffa62e7fb9ce6c84e7a522985be63229f7b3c254

  • SHA256

    1c5e131277676c4d465782da0459dab5d3a2a4a7ed779f4d6dd61a755de35857

  • SHA512

    9b64e8d256a43759d9c4e5906ea8b40288984a8b63d8d3db761882a0a2a0c285eaa3a0b4d7d7b960c987ef21ec1d46862ac8644f6514e4541b13d1c2fab383e4

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsi0:BbdDmjr+OtEvwDpjM8l

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 4 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\2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4544
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3516
  • 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 --mojo-platform-channel-handle=3816 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1064

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      61KB

      MD5

      71aa54c800f57a0797de7e6c23102b38

      SHA1

      bd6da2a2409130167d61b40c3f31066169fe9ffc

      SHA256

      6c46a48ee3891e608728e88c9a441c30c48a287ffcf7bf1e86d2a6bd69abbbe2

      SHA512

      44a1e0f1ec1413a2fbc16edaa9e9086d51889ec32df21f83da348ba7daa81d056964325a9fd008de851188efb8649c83b6daaaf6385d641cc23ceb29a1ce9535

    • memory/3516-20-0x0000000000690000-0x0000000000696000-memory.dmp

      Filesize

      24KB

    • memory/3516-26-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/3516-27-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4544-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4544-1-0x0000000000730000-0x0000000000736000-memory.dmp

      Filesize

      24KB

    • memory/4544-2-0x0000000000730000-0x0000000000736000-memory.dmp

      Filesize

      24KB

    • memory/4544-3-0x0000000000750000-0x0000000000756000-memory.dmp

      Filesize

      24KB

    • memory/4544-18-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB