Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 17:37

General

  • Target

    2024-05-24_c5ceecc2dedbe8684ec03f19025dae6f_cryptolocker.exe

  • Size

    70KB

  • MD5

    c5ceecc2dedbe8684ec03f19025dae6f

  • SHA1

    f04b9af723ae9595e7df8a172559a8d48be0a1ae

  • SHA256

    ae1c65414201856260ce94c7357d03b2f27eb1865a93eeb14755c7b6f9bb9aef

  • SHA512

    cd18d78a47c7cc14ad0dcf330b30e781168e0e3f84ea57087784d504b91919f4ab83611b4ea6fbc2c0dc0bcd522762475ec24e4e6e7b053a9896b9f17c112930

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/RV:vj+jsMQMOtEvwDpj5HZYTjipvF24d

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\2024-05-24_c5ceecc2dedbe8684ec03f19025dae6f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_c5ceecc2dedbe8684ec03f19025dae6f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:536
    • 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:2496
  • 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=4456 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4932

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      70KB

      MD5

      cc2eea7427c7bd6e2d870cbfd3c04206

      SHA1

      0e8b688f87b91b8eed0f605c89da51c07d9ddb79

      SHA256

      ffb24bbd055286fbe6e2e908c5e444a3907a7ecc4717d787c49687654f906ddb

      SHA512

      c78f109a620f75f03aacea51642333eb219425575a348251f09afc5e6ea44bc00043611f3d28e0e6450658d5b6d7ec942f1a475740df06f2f74fa67e4adc0936

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/536-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/536-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/536-2-0x0000000002240000-0x0000000002246000-memory.dmp

      Filesize

      24KB

    • memory/2496-17-0x0000000002070000-0x0000000002076000-memory.dmp

      Filesize

      24KB

    • memory/2496-23-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB