Windows Endpoint Analysis

Overview

This project documents the analysis of a suspicious binary (challenge.exe) discovered during an investigation. The analysis includes process behavior, network connections, persistence mechanisms, and system modifications.

Key Findings:

1️. Malicious Process Identification – Detected the running challenge.exe process and its network connection using tasklist and netstat.
2️. Persistence Mechanisms – Identified registry entries, scheduled tasks, and services used for maintaining persistence.
3️. Shared Resources & Exfiltration – Analyzed shared folders (xkalibur, Exfil) for potential data theft.
4️. Scheduled Task & Backdoor – Investigated a malicious task (ayttpnzc) and backdoor service (WindowsActiveService).

Important Commands

This guide provides essential commands and techniques to analyze an endpoint, detect anomalies, and investigate malicious activities.

Network Analysis

• net share – Displays shared resources on the local system.
• net view – Lists shared resources on a remote or local system.
• net sessions – Shows active SMB sessions on the system.
• net use – Displays and manages network connections and mapped drives.
• netstat – Displays active network connections and listening ports.
• netstat -anob – Shows active connections with associated processes and executables.

Process Analysis

• tasklist – Lists all running processes.
• tasklist /v – Displays detailed information about each process.
• tasklist /M – Shows processes using specific DLLs.
• tasklist /M /FI "PID eq 123" – Filters processes by PID to list associated modules.
• wmic – Windows Management Instrumentation command-line utility.
• wmic process where processid=123 get name, parentprocessid – Retrieves process name and parent process ID.

Services Analysis

• sc – Command-line tool for managing Windows services.
• sc create <ServiceName> binpath=<Path> start=auto – Creates a new service.
• net start <ServiceName> – Starts a service.
• sc query – Queries the status of a service.
• sc query state=all – Displays all services and their statuses.
• sc qc <ServiceName> – Displays service configuration details.

Scheduled Task Analysis

• schtasks /create /tn <TaskName> /tr <TaskPath> /sc <Schedule> /st <Time> /ru <User> – Creates a scheduled task.

Sysmon Event Analysis

• Get-WinEvent -LogName "Microsoft-Windows-Sysmon/Operational" – Retrieves Sysmon logs for detailed process and network event monitoring.

Additional Commands for Investigation

• whoami – Displays the current user’s information.
• ipconfig /all – Shows detailed network adapter configurations.
• get-process – Lists active processes (alternative to tasklist).
• net localgroup administrators – Lists local administrator accounts.

🔍 Use these commands to investigate suspicious activities and detect threats effectively.

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Keep hacking and stay curious!