Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-08-2024 20:48

General

  • Target

    20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe

  • Size

    738KB

  • MD5

    c3401fc4603ce678596ae40f8bb194e9

  • SHA1

    7786d4c9d942f9d3f78f873e7a9602701297853b

  • SHA256

    4f3c2e4fc7b10e68fabf7e4a15b02f28fe27ee84fa3843ceafacc7084da79434

  • SHA512

    ae9430dec06833f1a9a672c319ae9899fbc2546b03305acd66c3b1c4de246f67fb11552c6d3e9b6cb1ada67ef41aabd8490459a2872a02d48222436f449ade0c

  • SSDEEP

    6144:P5dkccXS5yMJncAlhkQiaBhoIudR38ZJJchBRsZVCw+r9oMQzEua:PkccXS5yMxcAlDVBhotR+2bd2yF

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Loads dropped DLL
    • Maps connected drives based on registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3652
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Maps connected drives based on registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2948
  • 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 --field-trial-handle=3996,i,1729213506309163284,12809566808978835441,262144 --variations-seed-version --mojo-platform-channel-handle=3860 /prefetch:8
    1⤵
      PID:4988

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Runtime.MSIL.1.0.0.0\sByte.dll

      Filesize

      39KB

      MD5

      d80d1b6d9a6d5986fa47f6f8487030e1

      SHA1

      8f5773bf9eca43b079c1766b2e9f44cc90bd9215

      SHA256

      446128f1712da8064d0197376184315cb529ed26ed9122f7b171bb208e22c0c3

      SHA512

      9fcf0105c2c9ee81c526d41633d93579bb8e2837989d77fb4a6523440415ec2d7fa46ac9ae4e55ecebd99126837817ac308cc079475de02667b21727a43d74cc

    • C:\Users\Admin\AppData\Roaming\svchost.exe

      Filesize

      738KB

      MD5

      c3401fc4603ce678596ae40f8bb194e9

      SHA1

      7786d4c9d942f9d3f78f873e7a9602701297853b

      SHA256

      4f3c2e4fc7b10e68fabf7e4a15b02f28fe27ee84fa3843ceafacc7084da79434

      SHA512

      ae9430dec06833f1a9a672c319ae9899fbc2546b03305acd66c3b1c4de246f67fb11552c6d3e9b6cb1ada67ef41aabd8490459a2872a02d48222436f449ade0c

    • memory/2948-24-0x00007FFA2F050000-0x00007FFA2FB11000-memory.dmp

      Filesize

      10.8MB

    • memory/2948-26-0x00007FFA2F050000-0x00007FFA2FB11000-memory.dmp

      Filesize

      10.8MB

    • memory/3652-0-0x00007FFA2F053000-0x00007FFA2F055000-memory.dmp

      Filesize

      8KB

    • memory/3652-1-0x0000000000BE0000-0x0000000000C9E000-memory.dmp

      Filesize

      760KB

    • memory/3652-2-0x0000000002D60000-0x0000000002D6C000-memory.dmp

      Filesize

      48KB

    • memory/3652-6-0x0000000002D80000-0x0000000002D88000-memory.dmp

      Filesize

      32KB

    • memory/3652-7-0x00007FFA2F050000-0x00007FFA2FB11000-memory.dmp

      Filesize

      10.8MB

    • memory/3652-8-0x00007FFA2F053000-0x00007FFA2F055000-memory.dmp

      Filesize

      8KB

    • memory/3652-9-0x00007FFA2F050000-0x00007FFA2FB11000-memory.dmp

      Filesize

      10.8MB

    • memory/3652-25-0x00007FFA2F050000-0x00007FFA2FB11000-memory.dmp

      Filesize

      10.8MB