yara - 4.2.3-4 main

YARA is a tool aimed at helping malware researchers to identify and
classify malware samples. With YARA, it is possible to create
descriptions of malware families based on textual or binary patterns
contained in samples of those families. Each description consists of
a set of strings and a Boolean expression which determines its logic.
.
Complex and powerful rules can be created by using binary strings with
wild-cards, case-insensitive text strings, special operators, regular
expressions and many other features.