What is a .EWF file?
EWF is an EnCase Expert Witness Format disk image, used in digital forensics.
- Did you know
- EWF images preserve a suspect’s drive with checksums for use as legal evidence.
- An EWF image carries case metadata such as the examiner’s name and acquisition notes, with CRCs every 64 sectors and an MD5 of the whole drive.
- EnCase 7 introduced a successor, the EWF2 EX01 format, which can store more metadata than the original.
- What Analyser reads
- Inspect virtual-machine descriptors (VMware .vmx, VirtualBox .vbox, OVF/OVA), disc images (Nero .nrg, Alcohol .mds/.mdf, CloneCD), embedded firmware (Intel HEX, Motorola S-record, UF2, ELF/AXF, Device Tree Blobs, U-Boot uImage), partition tables (MBR/GPT with GUIDs), Linux filesystem superblocks (ext2/3/4, SquashFS, cramfs, romfs) and Windows imaging (WIM/ESD) - reading headers directly, no upload.
- Depth of analysis
- .EWF is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .EWF file
- Drag a .EWF file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.