Exterro FTK Imager vs NetworkMiner

Exterro FTK Imager is a forensic imaging and preview tool for acquiring and preserving digital evidence. It creates full disk images in multiple industry-standard formats and verifies them with MD5 or SHA-1 hashes. Investigators can preview files and folders before acquisition, capture volatile RAM and registry data from a live device, and read or write common forensic image formats. Files can be exported for further analysis in FTK Forensic Toolkit. Supported acquisition sources include Windows and Linux hard drives, CDs and DVDs, thumb drives and other USB devices. The tool runs on Windows only, though it can image a Linux device; it does not collect directly from phones or other mobile devices. The free FTK Imager plan is listed at free. FTK Imager Pro costs $499 a year and adds encryption-aware workflows, iOS advanced logical collection, faster preview and targeted acquisition. Exterro identifies incident response and DFIR teams, law enforcement, forensic examiners, and corporate security and HR investigators as intended users.

NetworkMiner analyzes captured network traffic and can sniff live traffic, extracting artifacts such as files, images, emails, and passwords from PCAP files. It also builds a host inventory from IP address information for passive asset discovery and communication overviews. The free edition supports live sniffing and PCAP and ETL parsing on Windows and Linux, but not PcapNG parsing. Professional accepts PcapNG, Pcap-over-IP, and PacketCache data in addition to PCAP, ETL, and live sniffing, and exports results to CSV, JSON-LD, and XML. Its protocol features include file extraction across listed protocols, while VoIP support includes audio extraction from unencrypted calls. Professional also provides OSINT lookups for hashes, IP addresses, domains, and URLs. NetworkMiner does not decrypt HTTPS or other TLS-encrypted sessions. Extracted data stays on the end-user device rather than in the cloud. The source code is GPLv2 free and open source. Netresec warns that opening PCAPs can automatically extract malware and recommends Linux or Windows Sandbox to reduce self-infection risk.