Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 04:49

General

  • Target

    2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe

  • Size

    42KB

  • MD5

    e16b4d3ea88080431fbdefbedf57f155

  • SHA1

    41c013b8f21bb07505aa3da8e05722494a45a29b

  • SHA256

    be08bb522045dd6dbf020ea65b7457d1fb0387edca2e8d39a8dadc06449af456

  • SHA512

    eabb7adc92d9edc40701db4fddde45312f2445c920ec2a0adb031cbc9cfe4edde2464e210ef4087ea02f47649ce1004521a4fe58f7fda32761b0eb064667532c

  • SSDEEP

    768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqAH:bCDOw9aMDooc+vAqAH

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 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\2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3112
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:2492
  • 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 --field-trial-handle=4156,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=4124 /prefetch:8
    1⤵
      PID:2520

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            42KB

            MD5

            ea21a9f2322f1025f08a6fdca575b77c

            SHA1

            64abf3bfb99f657402bf259c0cc736ad77deca4f

            SHA256

            56a39ca7c530120002aafdae16e390569aa860e95c7779d7d41a142edbd13c34

            SHA512

            8ed2f74f34c1053280554a333512d89c5f76887bb87628abb6849301230c750b3ca7b20d5acf9029dc39874508f7b450ee39a2193e82e34d85280672adf2071d

          • memory/2492-18-0x0000000008000000-0x000000000800A000-memory.dmp

            Filesize

            40KB

          • memory/2492-20-0x0000000002060000-0x0000000002066000-memory.dmp

            Filesize

            24KB

          • memory/2492-26-0x0000000000660000-0x0000000000666000-memory.dmp

            Filesize

            24KB

          • memory/2492-27-0x0000000008000000-0x000000000800A000-memory.dmp

            Filesize

            40KB

          • memory/3112-0-0x0000000008000000-0x000000000800A000-memory.dmp

            Filesize

            40KB

          • memory/3112-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

            Filesize

            24KB

          • memory/3112-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

            Filesize

            24KB

          • memory/3112-9-0x00000000020C0000-0x00000000020C6000-memory.dmp

            Filesize

            24KB

          • memory/3112-16-0x0000000008000000-0x000000000800A000-memory.dmp

            Filesize

            40KB