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Analysis

  • max time kernel
    138s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 22:26

General

  • Target

    2024-06-11_45e593394874085a748bbc190d0207dd_cryptolocker.exe

  • Size

    45KB

  • MD5

    45e593394874085a748bbc190d0207dd

  • SHA1

    a4bc67089c207a2e938bcc147dc670a612a46389

  • SHA256

    a7a16eb1df65e1ffb5a409de289fad181f35b4880378375d9e53b08a435730a2

  • SHA512

    6e65f49240abbd7ba9786b0df2fa5f1a63027f3d40eb7d7ffaf1fb1b3430a52a6ae6dc00295931bbe43c07ed7f2ca83560b5d1c8e34842018d475f547f26b3ec

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aMDZ:6j+1NMOtEvwDpjrRrl

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\2024-06-11_45e593394874085a748bbc190d0207dd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_45e593394874085a748bbc190d0207dd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1516
    • 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:4520
  • 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=4080 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2320

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      46KB

      MD5

      635a2ffd428cfa22c02c8dfb2c465e60

      SHA1

      2cdd08f498c902bb33a137ba1276f080fd9c90a0

      SHA256

      260f04bf399250d56948b945a511f6a0712e2bfc769fe642a0d0cca486a422fc

      SHA512

      b8b78ac9014db7d36945cd0a2b0a68fa21299f6f9d9a4291287ee9ba15b34d78401aaa97e804519f87e0beedc5cc89b911618ef8769bcaa5183f5636c4689803

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1516-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/1516-1-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/1516-2-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/1516-3-0x0000000000750000-0x0000000000756000-memory.dmp

      Filesize

      24KB

    • memory/1516-26-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4520-17-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4520-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/4520-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/4520-49-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB