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Analysis

  • max time kernel
    143s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 19:09

General

  • Target

    2024-04-10_fe2d90fdeafa99abc27dd51a351c4d91_cryptolocker.exe

  • Size

    101KB

  • MD5

    fe2d90fdeafa99abc27dd51a351c4d91

  • SHA1

    581291910e2ab4e83b1153bea6f0d0ece2e0b1fc

  • SHA256

    bd75509af4baaf8cf48a1a705ab61dd59ddde8c1798a0b83ac41cd10409597af

  • SHA512

    715a3c229242b380316d53a7dca5d846ef50b8516103121c5dde6b02cbed5e3396a19c346fcc388ad1e5e49edf5d2133f77324fac77a908dff943360534e1ab1

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2yO3xp:xj+VGMOtEvwDpjubwQEIiVmkxv/u8

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-04-10_fe2d90fdeafa99abc27dd51a351c4d91_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-10_fe2d90fdeafa99abc27dd51a351c4d91_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3604
    • 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:648
  • 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=4112 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2584

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      101KB

      MD5

      4b83bd27c240824b5754e18a702d69d2

      SHA1

      ae248470eedee5b0de2b4aec90d6ecaff27647b3

      SHA256

      8f9626c09e2f5b06b94d277438ebc3d1f1d843a5df69a187fb7ecc30cc826149

      SHA512

      dbb01e3a8db0c49d3ddd4c264d45d66fcb5934bfd70e3b281b2e6738d4fdf40804a891a0fcaf9d24c6f6906e94f0a972d53903bc1f371ec0d9317720d6c1cb47

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/648-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/648-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/648-19-0x0000000000760000-0x0000000000766000-memory.dmp

      Filesize

      24KB

    • memory/648-49-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3604-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3604-1-0x0000000002210000-0x0000000002216000-memory.dmp

      Filesize

      24KB

    • memory/3604-2-0x0000000002210000-0x0000000002216000-memory.dmp

      Filesize

      24KB

    • memory/3604-3-0x0000000002230000-0x0000000002236000-memory.dmp

      Filesize

      24KB

    • memory/3604-26-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB