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Analysis

  • max time kernel
    110s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/02/2024, 19:26

General

  • Target

    2024-02-27_4141d21b9e4096dfa912fd45f355c7e1_cryptolocker.exe

  • Size

    49KB

  • MD5

    4141d21b9e4096dfa912fd45f355c7e1

  • SHA1

    85fc121d0075fefede08c1ecaea2dd861a725d19

  • SHA256

    14df634e3e23a37b6dfd6c035a41d0a3a78f30e16b220c353406ab043c46119f

  • SHA512

    afa379459a46412b840ed69ada45eaec53d95a6d6d73ec19c7963fb267e68bbaf4c13c6ebce0e14862014b40cf5523ec75c5064a29752077f24337b4518712da

  • SSDEEP

    768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CSz8:bgGYcA/53GAA6y37Q6dI+d5b8

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-02-27_4141d21b9e4096dfa912fd45f355c7e1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-27_4141d21b9e4096dfa912fd45f355c7e1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2380
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:4280
  • 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=3716 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:5040

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      49KB

      MD5

      d701c28a3f9e7d6e1b2ac918797271ff

      SHA1

      0d86b20d8bfacee32b50c2e8677f7ccbfe04165e

      SHA256

      3b684e8b8c586ae10c34bd24fbfb6f7d0964fceb0db8803925d859881e10c796

      SHA512

      b9476a69e104c1457f57acd16b441190d0fca63d56f5ac42c44bb7f0eb224610d56dde643228afd847e5e739da01487409eef80c0e103d4fe5201be771c902ff

    • memory/2380-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

      Filesize

      24KB

    • memory/2380-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

      Filesize

      24KB

    • memory/2380-2-0x0000000003150000-0x0000000003156000-memory.dmp

      Filesize

      24KB

    • memory/4280-18-0x0000000002250000-0x0000000002256000-memory.dmp

      Filesize

      24KB