YARA v4.0.3

• BUGFIX: Multiple out-of-bounds read in "dotnet" module.

YARA v4.0.2

• BUGFIX: Use-after-free bug in PE module (#1287).
• BUGFIX: Incorrect errors in rules when a single rule is badly formatted (#1294).
• BUGFIX: Assertion failed with rules that have invalid syntax (#1295).
• BUGFIX: Integer overflow causing missed matches on files larger than 2GB (#1304).
• BUGFIX: Crashes in Mac OS while scanning binaries with a signature that can't be verified (#1309).

YARA v4.0.1

• Update sandboxed API (#1276).
• BUGFIX: Fix regression in exports parsing in PE module (2bf67e6).
• BUGFIX: Fix unaligned accesses in ARM (e1654ae).

YARA v4.0.0

• New string modifiers base64 and base64wide (#1185).
• New string modifier private (#1096).
• Iterators for dictionaries and arrays (#1141).
• Multiple API changes.
• Memory footprint greatly reduced, specially when compiling large numbers of rules.
• New commmand-line option --scan-list (#1261).
• Added pdb_path field to "pe" module.
• Added export_details array to "pe" module.
• Added exports_index functions to "pe" module.
• Improvements to "cuckoo" module.
• BUGFIX: PE files with multiple signatures are parsed correctly (#940).
• BUGFIX: Fix PE rich header parsing (#1164).
• BUGFIX: Buffer overruns in "dotnet" module (#1167, #1173).

YARA v3.11.0

• Duplicated string modifiers are now an error.
• More flexible “xor” modifier.
• Implement “private” strings (#1096).
• Add “field_offsets” to “dotnet” module.
• Implement “crc32” functions in “hash” module.
• Improvements to “rich_signature” functions in “pe” module.
• Implement sandboxed API using SAPI.
• BUGFIX: Some regexp character classes not matching correctly when used with “nocase” modifier (#1117).
• BUGFIX: Reduce the number of ERROR_TOO_MANY_RE_FIBERS errors for certain hex pattern containing large jumps (#1107).
• BUGFIX: Buffer overrun in “dotnet” module (#1108).
• BUGFIX: Segfault in certain Windows versions (#1068).
• BUGFIX: Memory leak while attaching to a process fails (#1070).

YARA v3.10.0

• Optimize integer range loops by exiting earlier when possible.
• Cache the result of PE module’s imphash function in order to improve performance.
• Harden virtual machine against malicious code.
• BUGFIX: “xor” modifier not working as expected if not accompanied by “ascii” (#1053).
• BUGFIX: \s and \S character classes in regular expressions now include vertical tab, new line, carriage return and form feed characters.
• BUGFIX: Regression bug in hex strings containing wildcards (#1025).
• BUGFIX: Buffer overrun in “elf” module.
• BUGFIX: Buffer overrun in “dotnet” module.

YARA v3.9.0

• Improve scan performance for certain strings.
• Reduce stack usage.
• Prevent inadvertent use of compiled rules by forcing the use of -C when using yara command-line tool.
• BUGFIX: Buffer overflow in "dotnet" module.
• BUGFIX: Internal error when running multiple instances of YARA in Mac OS X. (#945)
• BUGFIX: Regexp regression when using nested quantifiers {x,y} for certain values of x and y. (#1018)
• BUGFIX: High RAM consumption in "pe" module while parsing certain files.(0c8b461)
• BUGFIX: Denial of service when using "dex" module. Found by the Cisco Talos team. (#1023)
• BUGFIX: Issues with comments inside hex strings.

Refer to the documentation for information on how to build and install YARA.

YARA v3.8.1

• BUGFIX: Some combinations of boolean command-line flags were broken in version 3.8.0.
• BUGFIX: While reporting errors that occur at the end of the file, the file name appeared as null.
• BUGFIX: dex module now works in big-endian architectures.
• BUGFIX: Keep ABI compatibility by keeping deprecated functions visible.

Refer to the documentation for information on how to build and install YARA.

YARA v3.8.0

• Scanner API.
• New “xor” modifier for strings.
• New fields and functions in PE module.
• Add functions “min” and “max” to math module.
• Make compiled.
• yara and yaracsupport reading rules from stdin by using - as the file name.
• Rule compilation is faster.
• BUGFIX: Regression in regex engine. /ba{3}b/ was matching “baaaab”.
• BUGFIX: Function yr_compiler_add_fd() was reading only the first 1024 bytes of the file.
• BUGFIX: Wrong calculation of sha256 hashes in Windows when using native crypto API.
• Lots of more bug fixes.

Refer to the documentation for information on how to build and install YARA.

YARA v3.7.1

• Fix regression in include directive (issue #796)
• Fix bug in PE checksum calculation causing wrong results in some cases.