Analysis

  • max time kernel
    145s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 15:41

General

  • Target

    2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe

  • Size

    42KB

  • MD5

    140851eb8b489a98b18f2bb88a99d6fd

  • SHA1

    9cfa8df3b0bd73f3e9f3d902c0e6916f2625cdd4

  • SHA256

    51a27ae7329b45a45d56d065900268013e6e4184248cf4807e1d39b124ca8bd7

  • SHA512

    8a59ce460a181f00330dd98813665f0a2aecc52ca1e98c2f1cec6cb34798516bc70860cc918583902dd38eb293b1fcef74317bd119b6720707bdc9694ec7694a

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnY1n9R:m5nkFNMOtEvwDpjG8hgpY19R

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1380
    • 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:3932
  • 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=4068 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1496

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      42KB

      MD5

      11497a1481033681e3a94ebb39ab5b9b

      SHA1

      bcd31188ec1e7d6010f2b2ec55be12b3df52a66d

      SHA256

      a34fbe60eeb8b2f893a67b128118570ff69fdeb9e039174f0696c0e7e4318d43

      SHA512

      0858e3e077e8b2575da8c8ecddc82de8ead82ada3b15f38ba8d4c67163e27c734f0d72242e1e5fe48103e8b109c820c5c7e44762ecd68c0f2d1118c96f418613

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1380-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/1380-1-0x0000000002280000-0x0000000002286000-memory.dmp

      Filesize

      24KB

    • memory/1380-2-0x0000000002280000-0x0000000002286000-memory.dmp

      Filesize

      24KB

    • memory/1380-3-0x0000000002190000-0x0000000002196000-memory.dmp

      Filesize

      24KB

    • memory/1380-26-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/3932-18-0x0000000000730000-0x0000000000736000-memory.dmp

      Filesize

      24KB

    • memory/3932-19-0x0000000000750000-0x0000000000756000-memory.dmp

      Filesize

      24KB

    • memory/3932-49-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB