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
    10/05/2024, 03:40

General

  • Target

    2024-05-10_4662490f759ce8c1a017a1d27f58288d_cryptolocker.exe

  • Size

    81KB

  • MD5

    4662490f759ce8c1a017a1d27f58288d

  • SHA1

    d18448333009bdaf9a673cfae2cf632aac1ee084

  • SHA256

    b6dbd88798690e13130c4bb31e1ebfbbe31e11117ac2ef0d53c838f1a4457ea5

  • SHA512

    6a2ef764accd1c6d593eb86193b8540e5b5ef928a13a61b46ba75e7ab5cb4ab021c1ddd610060801a75d07760315ffe700e4585790c98fe34ff440a8e792487a

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMr3S:TCjsIOtEvwDpj5HE/OUHnSM8

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-10_4662490f759ce8c1a017a1d27f58288d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_4662490f759ce8c1a017a1d27f58288d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4336
    • 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:4908
  • 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=4136 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4912

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      81KB

      MD5

      9c874735b4903d186555c489838002d1

      SHA1

      705a42564b122dd5888561a9d2d2679ffb75dc55

      SHA256

      dab763d5289ffad5e69fd7ed148308368321f8cdef2205c9d65b72a4442780dc

      SHA512

      d555af28ff6860d4429d884adad1c289a462ba5d7f03db2e6fde1d91afeb426d748e39672b62fae37eb2dda7efcad2fa0fcbe7b994d251126c203e0263c197a6

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/4336-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/4336-1-0x0000000002140000-0x0000000002146000-memory.dmp

      Filesize

      24KB

    • memory/4336-2-0x0000000002140000-0x0000000002146000-memory.dmp

      Filesize

      24KB

    • memory/4336-3-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/4336-25-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/4908-19-0x0000000002040000-0x0000000002046000-memory.dmp

      Filesize

      24KB

    • memory/4908-18-0x00000000021D0000-0x00000000021D6000-memory.dmp

      Filesize

      24KB

    • memory/4908-48-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB