alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg: "[WINDOWS-AUTH] Login failure - Unknown username or bad password - Brute force [25/1]"; content: " 529|3a| "; classtype: unsuccessful-user; program: Security*; after: track by_src, count 25, seconds 300; threshold: type limit, track by_src, count 1, seconds 86400; flowbits: set,brute_force,86400; fwsam: src, 1 day; parse_src_ip: 1; parse_port; reference: url,wiki.quadrantsec.com/bin/view/Main/5001151; sid: 5001151; rev:13;)

-- Main.Sagan-Wiki-Add - 2015-10-21

New revisions of 5001151 will be below...

alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg: "[WINDOWS-AUTH] Login failure - Unknown username or bad password - Brute force [25/1]"; content: " 529|3a| "; classtype: unsuccessful-user; program: Security; after: track by_src, count 25, seconds 300; threshold: type limit, track by_src, count 1, seconds 86400; flowbits: set,brute_force,21600; fwsam: src, 1 day; parse_src_ip: 1; parse_port; reference: url,wiki.quadrantsec.com/bin/view/Main/5001151; sid: 5001151; rev:15;)

-- Main.Sagan-Wiki-Add - 2016-8-30

alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[WINDOWS-AUTH] Login failure - Unknown username or bad password - Brute force [25/1]"; event_id: 529; classtype: brute-force; program: Security; after: track by_src, count 25, seconds 300; threshold: type suppress, track by_src, count 1, seconds 86400; xbits: set,brute_force,track ip_src,expire 21600; parse_src_ip: 1; parse_port; reference: url,wiki.quadrantsec.com/bin/view/Main/5001151; sid: 5001151; rev:29;)

-- Main.Sagan-Wiki-Add - 2021-4-12