Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 21:39

General

  • Target

    2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe

  • Size

    45KB

  • MD5

    f1432583ed741649cb501945b93bdcdc

  • SHA1

    ad3584cd6624e4218044f4cdef969f619af32da8

  • SHA256

    b75d5910b1f48d41bed8a29967091c7bb97c3dfbe4d8c4e14b5a78308d53ee97

  • SHA512

    9cc9d80ea99f9b581b5f4d9171505dce0dcc4701efeb0bca73635f69bca71b3c63814a190d4f724d3be795f536347d3f3c174194125adc999b76761ab22a2f44

  • SSDEEP

    768:bao/2n1TCraU6GD1a4X1XOQ69zbjlAAX5e9zz:bF/y2lFizbR9Xwzz

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\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5064
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      PID:3996
  • 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=3684 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4168

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            45KB

            MD5

            ebf17f8bfb564936eab4dc5794406f54

            SHA1

            c80f071c92a45004b6a0e0b7827fa0d2670d4538

            SHA256

            f9ab409c2f4156e7f6963bb275a92a8967791125671fb490337141ec6cceb075

            SHA512

            1d6345c4dcc9a0356053cc417d0b512acb11d8afa7afc8c272af0dfcaa1ca7f238c7aae5da2c580c8059692a1bb5f51eb8a0ca9470718d5626750213d97079a8

          • memory/3996-25-0x0000000002210000-0x0000000002216000-memory.dmp

            Filesize

            24KB

          • memory/5064-0-0x0000000000730000-0x0000000000736000-memory.dmp

            Filesize

            24KB

          • memory/5064-1-0x0000000000730000-0x0000000000736000-memory.dmp

            Filesize

            24KB

          • memory/5064-2-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB