Email Header Analysis Tools:

 Email Header Analysis Tools:

MXToolbox Email Header Analyzer: https://mxtoolbox.com/EmailHeaders.aspx - A very popular and user-friendly tool for parsing and analyzing email headers.

Google Admin Toolbox Messageheader: https://toolbox.googleapps.com/apps/messageheader/analyzeheader1 - A tool provided by Google for analyzing email headers.

Mailheader.org: https://mailheader.org/ - A simple online email header analyzer.

URL Analysis and Reputation Tools:

VirusTotal: https://www.virustotal.com/gui/home/url - Analyzes URLs for malware and phishing attempts using multiple scan engines.

URLScan.io: https://urlscan.io/ - Provides a sandbox environment to analyze website behavior and identify malicious activity.

AbuseIPDB: https://www.abuseipdb.com/ - Checks the reputation of IP addresses associated with a URL.

Talos Intelligence (Cisco): https://talosintelligence.com/ - Offers reputation lookups for domains, IPs, and files.

Whois Lookup (various providers): Many websites offer Whois lookup services (e.g., https://www.whois.com/whois/). This helps identify domain registration information.

Malware Analysis - Sandboxing and Static Analysis (These often require local installation or are specialized online services, so I'll provide general links to resources and well-known tools):

Cuckoo Sandbox: https://cuckoosandbox.org/ - An open-source malware analysis sandbox (requires installation).

Hybrid Analysis: https://www.hybrid-analysis.com/ - A free online sandbox for analyzing malware.

Any.Run: https://any.run/ - An interactive online sandbox for malware analysis.

PEiD: (Often found on software download sites like SourceForge or FossHub - search for "PEiD download") - A tool for identifying file types and packers (static analysis - requires installation).

Strings (Sysinternals Suite): https://learn.microsoft.com/en-us/sysinternals/downloads/strings - A command-line tool for extracting printable strings from files (static analysis - part of a larger suite).

OSINT Resources:

Shodan: https://www.shodan.io/ - A search engine for internet-connected devices, useful for identifying infrastructure.

Censys: https://censys.io/ - Similar to Shodan, provides data on internet-connected devices.