Analysis

  • max time kernel
    135s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 04:34

General

  • Target

    2024-05-30_efd3c6f596e4e6282a1c8cedfec32f92_cryptolocker.exe

  • Size

    76KB

  • MD5

    efd3c6f596e4e6282a1c8cedfec32f92

  • SHA1

    d659d01b1a9cdf4391d7ae1e56127c92dc5f2189

  • SHA256

    09f59de40dc3476fdc3cc361183dc107b7f147c350f5f6a582245f6815f9e18d

  • SHA512

    ca2da31b8ff2e979a793266a5300a7af9c112ab83573f4245b3a7513ea432ce5275930b7dbfd9e533c74c63d463cb6bf49434320cdcff997c56c535673877062

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KUn:ZVxkGOtEvwDpjcaD

Score
9/10

Malware Config

Signatures

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-30_efd3c6f596e4e6282a1c8cedfec32f92_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_efd3c6f596e4e6282a1c8cedfec32f92_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:732
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2936
  • 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=4232,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=4296 /prefetch:8
    1⤵
      PID:1012

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      76KB

      MD5

      82fba8ae35489a057eb5ebfd64f64d5c

      SHA1

      6070a29c03e2ffce7f236c562a517a76778efd77

      SHA256

      a0b03d7e9c6ce36cf5561dd5439fec3d0c20965aa774ed595c60f5ff0dca3379

      SHA512

      bf867aa7fdb899d1d7bd38f9fe76ca76415d07eedd36b340cf9851e9125d417c71c0d43af2f2ef23cc53323cd20a51bff90401cb6f92712d178e82a54a8a9240

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/732-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/732-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/732-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/732-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/732-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/2936-19-0x0000000000450000-0x0000000000453000-memory.dmp

      Filesize

      12KB

    • memory/2936-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/2936-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB