# Pcaps analysis Start **searching** for **malware** inside the pcap. Use the **tools** mentioned in [**Malware Analysis**](../malware-analysis.md). A note about PCAP vs PCAPNG: there are two versions of the PCAP file format; PCAPNG is newer and not supported by all tools. You may need to convert a file from PCAPNG to PCAP using Wireshark or another compatible tool, in order to work with it in some other tools. ## Online tools for pcaps * If the header of your pcap is **broken** you should try to **fix** it using: [http://f00l.de/hacking/**pcapfix.php**](http://f00l.de/hacking/pcapfix.php)\*\*\*\* * Extract **information** and search for **malware** inside a pcap in [**PacketTotal**](https://packettotal.com/)\*\*\*\* * Search for **malicious activity** using [**www.virustotal.com**](https://www.virustotal.com/) and [**www.hybrid-analysis.com**](https://www.hybrid-analysis.com/)\*\*\*\* ## Basic Statistics ### Capinfos ```text capinfos capture.pcap ``` ### Wireshark _**You can find more Wireshark trick in:**_ {% page-ref page="wireshark-tricks.md" %} ## Suricata ### Install and setup ```text apt-get install suricata apt-get install oinkmaster echo "url = http://rules.emergingthreats.net/open/suricata/emerging.rules.tar.gz" >> /etc/oinkmaster.conf oinkmaster -C /etc/oinkmaster.conf -o /etc/suricata/rules ``` ### Check pcap ```text suricata -r packets.pcap -c /etc/suricata/suricata.yaml -k none -v -l log ``` ## Ngrep If you are **looking** for **something** inside the pcap you can use **ngrep**. And example using the main filters: ```text ngrep -I packets.pcap "^GET" "port 80 and tcp and host 192.168 and dst host 192.168 and src host 192.168" ``` ## Xplico Framework Xplico can **analyze** a **pcap** and extract information from it. For example, from a pcap file Xplico extracts each email \(POP, IMAP, and SMTP protocols\), all HTTP contents, each VoIP call \(SIP\), FTP, TFTP, and so on. ### Install ```bash sudo bash -c 'echo "deb http://repo.xplico.org/ $(lsb_release -s -c) main" /etc/apt/sources.list' sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 791C25CE sudo apt-get update sudo apt-get install xplico ``` ### Run ```text /etc/init.d/apache2 restart /etc/init.d/xplico start ``` Access to _**127.0.0.1:9876**_ with credentials _**xplico:xplico**_ Then create a **new case**, create a **new session** inside the case and **upload the pcap** file. ## NetworkMiner Like Xplico it is a tool to analyze and extract objects from pcaps. It has a free edition that you can download [here](https://www.netresec.com/?page=NetworkMiner). ## [BruteShark](https://github.com/odedshimon/BruteShark) * Extracting and encoding usernames and passwords \(HTTP, FTP, Telnet, IMAP, SMTP...\) * Extract authentication hashes and crack them using Hashcat \(Kerberos, NTLM, CRAM-MD5, HTTP-Digest...\) * Build visual network diagram \(Network nodes & users\) * Extract DNS queries * Reconstruct all TCP & UDP Sessions * File Carving ## Other pcap analysis tricks * [DNSCat pcap analysis](dnscat-exfiltration.md) * [USB Keyboard pcap analysis](usb-keyboard-pcap-analysis.md)