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Proofpoint, Inc.

Essentials Filters: File extensions

Situation You encounter an unknown file extension and want to learn what program or file uses that extension. You may be creating or using filters for specific attachment types and need to know what extensions to target.
Solution See below for a list of all filter file extensions. These are helpful to know which extension applies to specific attachment type filters.


List of file extensions:

Microsoft executables: .exe, .com
Microsoft binary libraries: .dll
Microsoft executable scripts: .bat, .pif, .scr
Visual Basic files: .vb, .vbe, .vbs
Other vulnerable Microsoft files: .chm, .hlp, .inf, .isp, .lnk, .msc, .msi, .msp, .reg, .shb, .shs, .wsc, .wsf, .wsh
Microsoft/Installshield Cabinet files: .cab
Java binaries: .jar
OS X DMG files: .dmg
OS X install scripts: .mpkg
Debian/RedHat packages: .deb, .rpm
MS Office, pre-2007: .doc, .xls, .ppt
XML, Zip, and newer Office docs: .zip, .docm, .docx, .dotm, .dotx, .pptx, .pptm, .potx, .potm, .ppam, .ppsx, .ppsm, .xlsx, .xlsm, .xltx, .xltm, .xlam, .odb, .odf, .odg, .odm, .odp, .ods, .odt, .otg, .oth, .otp, .ots, .ott
Microsoft Access: .accdb, .accde, .accdt, .accdr, .mda, .mdb, .mde, .mdt, .mdw, .mdz
Other *Office files: .dot, .xlsb, .xla, .xlb, .xlc, .xld, .xlk, .xll, .xlm, .xlt, .xlv, .xlw, .pcs, .pot, .ppa, .pps, .slk, .stc, .std, .sti, .stw, .sxc, .sxd, .sxg, .sxi, .sxm, .sxw, .wcm, .wdb, .wks, .wps, .wkb, .wpd, .wpt, .wp5, .wpf, .wpm
Rich Text Format files: .rtf
Tape archives: .tar, .cpio
Compressed files: .F, .gz, .bz, .bz2, .lzo, .Z, 
Other compressed archives: .7z, .rar, .lha, .arj, .arc, .zoo, .sit
PDF files: .pdf
PostScript: .ps, .ai
TeX DVI files: .dvi
Macromedia Flash data: .swf
Images: .jpg, .gif, .png, .tif, .pcx, .bmp
Vector graphics: .svg, .eps
Windows Metafiles: .wmf
Cursors and icons: .ani, .cur, .ico
Multimedia/video containers: .wmv, .avi, .flv, .mkv, .ogg, .ogm, .mov
MPEG audio/video: .mpg, .mp2, .mp3, .mp4, .m4a, .aac
RealNetworks audio/video: .ra, .rm, .rv, .rmvb
Windows Media audio: .wma
FLAC audio: .flac
AIFF audio: .aif, .aiff, .aifc
WAVE audio: .wav
MIDI audio: .mid

If you need assistance creating filters, please review these articles