It does not rely on any signatures database that requires frequent updates, instead uses much better heuristic method for detecting malicious codes. This method is known to be more efficient as it monitors all activity on your computer, and if a program is showing virus like behavior, it reports, remove or quarantined the file.
Quttera is very simple to use, no complicated settings is required. After installation, select ‘real time monitor’ from the ‘preference’ section, for detecting threats automatically. It monitors all activities of media files and documents, for example auto saving function of word, etc for possible infection. You can also specify the suspicious files to delete, quarantine, etc from the ‘preference’ section.
Quttera is quite useful to recognize shellcodes and other malware hidden in music files, movies files, picture files, computer media files, electronic documents, text files and any other types of data and multimedia files.[via]