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
    08-05-2024 03:38

General

  • Target

    2024-05-08_bde7822aae0de6ce0bc6a2b83578bb8a_cryptolocker.exe

  • Size

    82KB

  • MD5

    bde7822aae0de6ce0bc6a2b83578bb8a

  • SHA1

    6a0ac316d7bfc3658c0afe27d76237a27a9b4483

  • SHA256

    f8898455f237b577a661001aa4b3849376be9ae0bbceef71d7e3536cf042183d

  • SHA512

    e90a14875f05924ee9fbf5bfd93b0ecb26eec56a1ae2ddc7ed6ee3f3a6d5e203ab0c89835a0685fad138610818e8975f4565abbfdd60c01a27d51f65a42c34c2

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrMv:TCjsIOtEvwDpj5HE/OUHnSMq

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-08_bde7822aae0de6ce0bc6a2b83578bb8a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-08_bde7822aae0de6ce0bc6a2b83578bb8a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3192
    • 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:228
  • 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=4140 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2572

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      82KB

      MD5

      7a10a5f907c04721661fe54be6167108

      SHA1

      8a86d1d8fd30745730969a41dd9dff158d65508b

      SHA256

      f10656e6e0442cc322c459a1b5996d342eb7f262cf3e2b1a7711af5beebbb44e

      SHA512

      23c2333fdcb3f41cb8460c1180a54b279bb8d9c3826c8cbad3a01a5bfde6722892b9daae7fb9b8caad499027736ea2e5f669fbffe6053ce3556d59fcc86b0428

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/228-25-0x00000000007B0000-0x00000000007B6000-memory.dmp

      Filesize

      24KB

    • memory/228-19-0x0000000002070000-0x0000000002076000-memory.dmp

      Filesize

      24KB

    • memory/228-48-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/3192-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/3192-1-0x0000000000670000-0x0000000000676000-memory.dmp

      Filesize

      24KB

    • memory/3192-2-0x0000000000670000-0x0000000000676000-memory.dmp

      Filesize

      24KB

    • memory/3192-3-0x0000000000690000-0x0000000000696000-memory.dmp

      Filesize

      24KB

    • memory/3192-13-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB