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https://github.com/VirusTotal/yara

The pattern matching swiss knife
https://github.com/VirusTotal/yara

yara

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The pattern matching swiss knife

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## YARA in a nutshell



YARA is a tool aimed at (but not limited to) helping malware researchers to

identify and classify malware samples. With YARA you can create descriptions of

malware families (or whatever you want to describe) based on textual or binary

patterns. Each description, a.k.a. rule, consists of a set of strings and a

boolean expression which determine its logic. Let's see an example:



```yara

rule silent_banker : banker

{

    meta:

        description = "This is just an example"

        threat_level = 3

        in_the_wild = true



    strings:

        $a = {6A 40 68 00 30 00 00 6A 14 8D 91}

        $b = {8D 4D B0 2B C1 83 C0 27 99 6A 4E 59 F7 F9}

        $c = "UVODFRYSIHLNWPEJXQZAKCBGMT"



    condition:

        $a or $b or $c

}

```



The above rule is telling YARA that any file containing one of the three strings

must be reported as *silent_banker*. This is just a simple example, more

complex and powerful rules can be created by using wild-cards, case-insensitive

strings, regular expressions, special operators and many other features that

you'll find explained in [YARA's documentation](https://yara.readthedocs.org/).



YARA is multi-platform, running on Windows, Linux and Mac OS X, and can be used

through its command-line interface or from your own Python scripts with the

yara-python extension.



## Additional resources



Do you use GitHub for storing your YARA rules? [YARA-CI](https://yara-ci.cloud.virustotal.com)

may be a useful addition to your toolbelt. This is GitHub application that provides

continuous testing for your rules, helping you to identify common mistakes and

false positives.



If you plan to use YARA to scan compressed files (.zip, .tar, etc) you should

take a look at [yextend](https://github.com/BayshoreNetworks/yextend), a very

helpful extension to YARA developed and open-sourced by Bayshore Networks.



Additionally, the guys from [InQuest](https://inquest.net/) have curated an

awesome list of [YARA-related stuff](https://github.com/InQuest/awesome-yara).



## Who's using YARA



* [0x101 Cyber Security](https://0x101-cyber-security.de)

* [Adlice](https://www.adlice.com/)

* [AlienVault](https://otx.alienvault.com/)

* [Avast](https://www.avast.com/)

* [BAE Systems](https://www.baesystems.com/home?r=ai)

* [Bayshore Networks, Inc.](https://www.bayshorenetworks.com)

* [Binalyze](https://www.binalyze.com/)

* [BinaryAlert](https://github.com/airbnb/binaryalert)

* [Blueliv](https://www.blueliv.com)

* [Cado Security](https://docs.cadosecurity.com/cado-response/investigate/detections#setting-up-detections)

* [Cisco Talos Intelligence Group](https://talosintelligence.com/)

* [Cloudina Security](https://cloudina.co.uk)

* [Cofense](https://cofense.com)

* [Conix](https://www.conix.fr)

* [CounterCraft](https://www.countercraft.eu)

* [Cuckoo Sandbox](https://github.com/cuckoosandbox/cuckoo)

* [Cyber Triage](https://www.cybertriage.com)

* [Cybereason](https://www.cybereason.com)

* [Digita Security](https://digitasecurity.com/product/uxprotect)

* [Dragos Platform](https://dragos.com/platform/)

* [Dtex Systems](https://dtexsystems.com)

* [ESET](https://www.eset.com)

* [ESTsecurity](https://www.estsecurity.com)

* [Elastic Security](https://github.com/elastic/protections-artifacts)

* [Fidelis XPS](https://www.fidelissecurity.com/network-security-appliance/Fidelis-XPS)

* [FireEye, Inc.](https://www.fireeye.com)

* [Forcepoint](https://www.forcepoint.com)

* [Fox-IT](https://www.fox-it.com)

* [FSF](https://github.com/EmersonElectricCo/fsf)

* [Guidance Software](https://www.guidancesoftware.com/endpointsecurity)

* [Heroku](https://heroku.com)

* [Hornetsecurity](https://www.hornetsecurity.com/en/)

* [ICS Defense](https://icsdefense.net/)

* [InQuest](https://www.inquest.net/)

* [IntelOwl](https://github.com/intelowlproject/IntelOwl)

* [Joe Security](https://www.joesecurity.org)

* [Kaspersky Lab](https://www.kaspersky.com)

* [KnowBe4](https://www.knowbe4.com)

* [Koodous](https://koodous.com/)

* [Laika BOSS](https://github.com/lmco/laikaboss)

* [Lastline, Inc.](https://www.lastline.com)

* [libguestfs](https://www.libguestfs.org/)

* [LimaCharlie](https://limacharlie.io/)

* [Malpedia](https://malpedia.caad.fkie.fraunhofer.de/)

* [Malwation](https://malwation.com/)

* [McAfee Advanced Threat Defense](https://mcafee.com/atd)

* [Metaflows](https://www.metaflows.com)

* [NBS System](https://www.nbs-system.com/)

* [ndaal](https://ndaal.eu)

* [NetLock](https://netlockendpoint.com)

* [Nextron Systems](https://www.nextron-systems.com)

* [Nozomi Networks](https://www.nozominetworks.com)

* [osquery](https://www.osquery.io)

* [Payload Security](https://www.payload-security.com)

* [PhishMe](https://phishme.com/)

* [Picus Security](https://www.picussecurity.com/)

* [Radare2](https://rada.re)

* [RedSocks Security](https://redsocks.eu/)

* [ReversingLabs](https://reversinglabs.com)

* [Scanii](https://scanii.com)

* [SecondWrite](https://www.secondwrite.com)

* [SonicWall](https://www.sonicwall.com/)

* [SpamStopsHere](https://www.spamstopshere.com)

* [Spyre](https://github.com/spyre-project/spyre)

* [stoQ](https://stoq.punchcyber.com)

* [Sublime Security](https://sublime.security)

* [SumoLogic](https://sumologic.com)

* [Tanium](https://www.tanium.com/)

* [Tenable Network Security](https://www.tenable.com/)

* [Tenzir](https://tenzir.com)

* [The DigiTrust Group](https://www.digitrustgroup.com/)

* [ThreatConnect](https://www.threatconnect.com/)

* [ThreatStream, Inc.](https://www.threatstream.com)

* [Thug](https://github.com/buffer/thug)

* [Threat.Zone](https://threat.zone)

* [TouchWeb](https://www.touchweb.fr)

* [Trend Micro](https://www.trendmicro.com)

* [UnpacMe](https://www.unpac.me)

* [UpSight Security Inc.](https://upsight.ai/)

* [Uptycs Inc](https://www.uptycs.com/)

* [Veeam](https://www.veeam.com/)

* [Verisys Antivirus API](https://www.ionxsolutions.com/products/verisys-virus-api)

* [VirusTotal Intelligence](https://www.virustotal.com/intelligence/)

* [VMRay](https://www.vmray.com/)

* [Volexity](https://www.volexity.com/products-overview/volcano/)

* [We Watch Your Website](https://www.wewatchyourwebsite.com/)

* [x64dbg](https://x64dbg.com)

* [YALIH](https://github.com/Masood-M/YALIH)



Are you using it? Want to see your site listed here?