Hi Orion! Thank you for reporting this. URLhaus is a partner that generates a list of ClamAV signatures to target malicious URLs. Signature Urlhaus.Malware.452652-9766253-0 looks for a malicious URL inside HTML files, which is why it is alerting on the URLs you mentioned. We found these FPs some weeks ago and added an extra check on new ClamAV signatures to prevent them from alerting on legitimate URLhaus content. We are currently updating older ClamAV signatures to ensure they don't FP on non-malicious HTML files.
Best regards, Lilia Gonzalez Malware Research Team Cisco Talos On Wed, Dec 23, 2020 at 1:11 PM Orion Poplawski <or...@nwra.com> wrote: > Can anyone give me some details about the Urlhaus.Malware.452652-9766253-0 > signature? We're seeing following URLs trigger it: > > https://curben.gitlab.io/malware-filter/urlhaus-filter-online.txt > > https://raw.githubusercontent.com/curbengh/urlhaus-filter/master/urlhaus-filter-online.txt > > https://gitcdn.xyz/cdn/curbengh/urlhaus-filter/c499fcbe5e95f61bbe889f4e3a19d5d2e877e120/urlhaus-filter-online.txt > > https://cdn.statically.io/gl/curben/urlhaus-filter/master/urlhaus-filter-online.txt > > https://cdn.jsdelivr.net/gh/curbengh/urlhaus-filter/urlhaus-filter-online.txt > > Which seems to be the online update URLs for the urlhaus filter. Does > ClamAV > deem urlhaus a bad actor? > > Thanks, > Orion > > -- > Orion Poplawski > Manager of NWRA Technical Systems 720-772-5637 > NWRA, Boulder/CoRA Office FAX: 303-415-9702 > 3380 Mitchell Lane or...@nwra.com > Boulder, CO 80301 https://www.nwra.com/ > > _______________________________________________ > > clamav-users mailing list > clamav-users@lists.clamav.net > https://lists.clamav.net/mailman/listinfo/clamav-users > > > Help us build a comprehensive ClamAV guide: > https://github.com/vrtadmin/clamav-faq > > http://www.clamav.net/contact.html#ml >
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