Analysis

  • max time kernel
    144s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 10:44

General

  • Target

    2024-05-09_a19f326ce70437092f0bb92291b6ea11_cryptolocker.exe

  • Size

    42KB

  • MD5

    a19f326ce70437092f0bb92291b6ea11

  • SHA1

    8acb3863ff52e209eb469d5b3eef57164f4d65fe

  • SHA256

    0316f2e3ac3d423dea6d62c0f215804d9a73c7aa2bf922758d1cb14ec5ba2a8c

  • SHA512

    8a6cd77917a11fe652b7a8d09447a8cf496aae57584051afb66e050cfa2ba90f4a8c54cdd792181c042e6565fd7674bf9f7610c0642395808dc71f85b6a1f1b3

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtXabMwQ:6j+1NMOtEvwDpjrR2XabMwQ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-09_a19f326ce70437092f0bb92291b6ea11_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_a19f326ce70437092f0bb92291b6ea11_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:792
    • 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:452
  • 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=4088 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2720

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            43KB

            MD5

            9427f5c125c4e0600e6edf46d6acb558

            SHA1

            83a6951f05533a961f17c87f105473f601d6188d

            SHA256

            eacac3d10d7ef2c30fa48f4ae4aa714bcd26393b99f62319e7664e9ba123a10d

            SHA512

            04c8612ed955f2ba46fa3a57f5aa77d401dcd5af993ad0bc3caa4af50e661a865fb500155ec7ae44efb0faf4782940b8d3e8122aeabaafd4b252ee46cf619676

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/452-25-0x0000000000530000-0x0000000000536000-memory.dmp

            Filesize

            24KB

          • memory/452-50-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/792-0-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/792-1-0x0000000000660000-0x0000000000666000-memory.dmp

            Filesize

            24KB

          • memory/792-2-0x0000000000660000-0x0000000000666000-memory.dmp

            Filesize

            24KB

          • memory/792-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

            Filesize

            24KB

          • memory/792-17-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB