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Analysis

  • max time kernel
    143s
  • 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
    07/06/2024, 11:31

General

  • Target

    2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe

  • Size

    77KB

  • MD5

    58f05e8a40cd17087019d9678bfb2d58

  • SHA1

    95b79823935de6cd96e74d9e72be69df8306bc70

  • SHA256

    f965e9f301beae2341256056acd6ed4661a9e780031724c1bd37ff4a5cd41ef5

  • SHA512

    4d5f001e35c4b2c54683984011206860fbc2f53e42476c59e15717bce29fe9894ba3fb02c3be70aa4d17a4b3413ceb8715312a2da85643a9c9bf34b656451e16

  • SSDEEP

    1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1sie2:X6a+SOtEvwDpjBZYvQd2d

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4616
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4204
  • 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=4340 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4692

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      77KB

      MD5

      265e00feb50cb1142190a8c3ca0cda42

      SHA1

      1bc06b5e94b73099c3043086bfb001d4ad57b6b9

      SHA256

      20b88ca8de7a013951c5649da9f3393e9b65f4f74c05f4664da5ad777669e48e

      SHA512

      63b6faffc80e049e1f3e93bca53a5c0411f7304bd011a3593c0ed340374d20707d2637449c6e3bebab9f3d48936ffff34adc60bb85cdd53fbde00d3c4236f2c5

    • memory/4204-17-0x0000000000650000-0x0000000000656000-memory.dmp

      Filesize

      24KB

    • memory/4204-23-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/4616-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/4616-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/4616-2-0x0000000000600000-0x0000000000606000-memory.dmp

      Filesize

      24KB