Analysis

  • max time kernel
    140s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/05/2024, 00:04

General

  • Target

    2024-05-16_725fd99581c114b835eea349adc4fe99_cryptolocker.exe

  • Size

    76KB

  • MD5

    725fd99581c114b835eea349adc4fe99

  • SHA1

    2ffba254425adae66a680ad4087779d379c7d827

  • SHA256

    a5cf3bd54044f3bd3d429f1511be0aa852de246ce676a2083e2b259eba8b779d

  • SHA512

    819e2f2fc26b113a3bec5e740c4cb9b1e2d7aaf568b6a20e3c0ee1dc60f802f3545bad8e3c6386e84a9b08228e6e1462ae7b629f6156f63c1c05481fa6a9f49d

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KUO:ZVxkGOtEvwDpjcaC

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\2024-05-16_725fd99581c114b835eea349adc4fe99_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-16_725fd99581c114b835eea349adc4fe99_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3040
    • 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:772
  • 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=1324 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3960

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      76KB

      MD5

      3c15acfd00422bc40c4311b94f8f8eb8

      SHA1

      19cd723a57831981bd5869933ca97bd455243c47

      SHA256

      a4954160fdc5069e71746f404004bb30cba474846782edd5813e8551edb83324

      SHA512

      b84cd0169081bb80f04ce4e1248bc8c5bc0e8462790676e8c0ffe2e20e95655d3b57bc2b03c5f679821bee9e67ef6e4ad86b87564ab74fafc7bed1c1b202ff6e

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/772-16-0x00007FFDA2A10000-0x00007FFDA2C05000-memory.dmp

      Filesize

      2.0MB

    • memory/772-46-0x00007FFDA2A10000-0x00007FFDA2C05000-memory.dmp

      Filesize

      2.0MB

    • memory/3040-0-0x00007FFDA2A10000-0x00007FFDA2C05000-memory.dmp

      Filesize

      2.0MB

    • memory/3040-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/3040-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB