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Analysis

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

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/03/2024, 06:09

General

  • Target

    2024-03-16_52afd2e3ca8b114944b96923159a10a5_cryptolocker.exe

  • Size

    70KB

  • MD5

    52afd2e3ca8b114944b96923159a10a5

  • SHA1

    e1ea9b90104ee5446006617cb7a593f5944c4cfc

  • SHA256

    63f3eb38c263513ee77e35e151c8ecf00c16fa8893c88735ad884848a1f497dc

  • SHA512

    f7d2cc8c64f56e6dda244ca797f6a1d2c559a078016691fde3c93237a08223e7c6bb3faa78bc56e194f1d2a3eba6f4c399d35d5497ce3c98394daf1a89e1efb7

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4wYPsED3VK2+ZtyOjgO4r9vFAg2rqk63Ygx:vj+jsMQMOtEvwDpj5HwYYTjipvF2hK

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-03-16_52afd2e3ca8b114944b96923159a10a5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-16_52afd2e3ca8b114944b96923159a10a5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1400
    • 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:1508
  • 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=4104 --field-trial-handle=3084,i,11997299123381683778,5904351605020331957,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1480

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      70KB

      MD5

      d201ba88a326093ecb6b43d9db39b689

      SHA1

      b16402f46cb8d62accfd6bc7cfc960b1fe00e653

      SHA256

      8618f19fa747849de158e4dbca69997134d06c19c566c41520d91f29e4c00111

      SHA512

      ac3a1a6d7ecbafff26b737bcf04da9f5b3749eec508a86780f56458dd8ca5382eb6f4b66f98a89a05791593c35f8173301c7122ec7301c0ea7430042ac955e03

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1400-0-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/1400-1-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/1400-2-0x0000000000710000-0x0000000000716000-memory.dmp

      Filesize

      24KB

    • memory/1508-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

      Filesize

      24KB

    • memory/1508-19-0x00000000007B0000-0x00000000007B6000-memory.dmp

      Filesize

      24KB