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Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/05/2024, 03:46

General

  • Target

    2024-05-03_92bdbcdfa17c207e06bacc7f7bf8b5fa_cryptolocker.exe

  • Size

    54KB

  • MD5

    92bdbcdfa17c207e06bacc7f7bf8b5fa

  • SHA1

    1732be1630b7b1ba4f4478e195b01ff315ab53ee

  • SHA256

    70329ac875cdd3802d209b6dd10ddc337d97c0281e21c1b2364f8416faa3f395

  • SHA512

    5e453de9da44cf1a9569831f72b7adce7bcfaebe0309a1934a20688139d69773bf4462641dccc47d6c56713a58f1437fe6900fac0ee042f8a69662188b6e9e8f

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5U0:ZVxkGOtEvwDpjch

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\2024-05-03_92bdbcdfa17c207e06bacc7f7bf8b5fa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-03_92bdbcdfa17c207e06bacc7f7bf8b5fa_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4868
    • 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:3156
  • 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=3708 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1856

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      54KB

      MD5

      be2ee274da712b20056bbd90f0c6f802

      SHA1

      de01b3877a51c68255d89875f00178b2d205cb3c

      SHA256

      06ed4d1c6c6c0dd3a52e2f38a06e986a1cb5c5bc8a63f1a92b4ab72c03ee4bf3

      SHA512

      bf38137a21dda5526a97dd153bd919e22f1e721513c7782b1c9ff2c1f3034bd1baeb6e258219538fcd5436dc49f547ee4cdb62c785006316cce4e93bbd058431

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3156-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/3156-19-0x0000000000650000-0x0000000000656000-memory.dmp

      Filesize

      24KB

    • memory/3156-25-0x0000000000630000-0x0000000000636000-memory.dmp

      Filesize

      24KB

    • memory/4868-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/4868-1-0x0000000000520000-0x0000000000526000-memory.dmp

      Filesize

      24KB

    • memory/4868-2-0x0000000000520000-0x0000000000526000-memory.dmp

      Filesize

      24KB

    • memory/4868-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

      Filesize

      24KB

    • memory/4868-26-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB