General

  • Target
    WinLock.exe
  • Size 93KB
  • Sample260826-wl84mstdpb
  • SHA256 789722e6c338e8b28e317ca0af76c3dbe3bb221b6f4309a49e3e154005e0607a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      WinLock.exe
    • Size 93KB
    • SHA256 789722e6c338e8b28e317ca0af76c3dbe3bb221b6f4309a49e3e154005e0607a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Modifies WinLogon for persistence

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Discovers running processes

      Running process information can be used to identify security tools or plan follow-on actions.

    • Hide Artifacts: Hidden Files and Directories

MITRE ATT&CK Enterprise v16

Tasks