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Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/03/2024, 21:36

General

  • Target

    2024-03-18_9b3aa2f61bcde752a069d61b3746ced4_cryptolocker.exe

  • Size

    79KB

  • MD5

    9b3aa2f61bcde752a069d61b3746ced4

  • SHA1

    8ab7df8639458a710b2e425397ee51df17134894

  • SHA256

    a69eb102da46070bbca7b9e3d946905fcb4a74eaa65c1e6224c25e5774d0a549

  • SHA512

    c5d8c8af7881f4bc38b1949e17de8527ad725f9cea91447a8eee833cf83a22bfac9658d26e45e29f7bc83ff7979af54112c1f15bf2672568d0c820fadcbbd149

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHN9X:vCjsIOtEvwDpj5H9YvQd27

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-03-18_9b3aa2f61bcde752a069d61b3746ced4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-18_9b3aa2f61bcde752a069d61b3746ced4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3568
    • 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:4284
  • 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=3608 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2096

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      79KB

      MD5

      25c7a301ad95bf33af41b720faddf8f7

      SHA1

      9c3966f98b684f4f7794438b1dd6d19ffd2a6037

      SHA256

      4ed5eb0918d2d578ecd49a8231faf9aece2b020441de1593927373af0d0dd83f

      SHA512

      432f6432dfd9adef68a1eb95d2adf11785de7bee2ed654a99fdbd9ceea37cc06b93e138b76ee9b74a37ce2648aa0a401df25e7108c0386db1a2d6629e574b42f

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3568-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

      Filesize

      24KB

    • memory/3568-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

      Filesize

      24KB

    • memory/3568-2-0x0000000002040000-0x0000000002046000-memory.dmp

      Filesize

      24KB

    • memory/4284-17-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/4284-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB