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ftpd.rules
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ftpd.rules
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# Sagan ftpd.rules
# Copyright (c) 2009-2013, Quadrant Information Security <www.quadrantsec.com>
# All rights reserved.
#
# Please submit any custom rules or ideas to [email protected] or the sagan-sigs mailing list
#
#*************************************************************
# Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
# following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of conditions and the following
# disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
# following disclaimer in the documentation and/or other materials provided with the distribution.
# * Neither the name of the nor the names of its contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#*************************************************************
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] FTP Login refused"; content: "FTP LOGIN REFUSED"; classtype: unsuccessful-user; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000182; sid:5000182; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] File created"; content: " created "; classtype: not-suspicious; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000183; sid:5000183; rev:3;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] File deleted"; content: " deleted "; classtype: not-suspicious; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000184; sid:5000184; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] User uploaded a file to server"; content: "IMPORT file"; classtype: not-suspicious; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000185; sid:5000185; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] User downloaded a file to server"; content: "EXPORT file"; classtype: not-suspicious; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000186; sid:5000186; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] Remote host connected to FTP server"; pcre: "/FTP LOGIN FROM|connection from|connect from/"; classtype: successful-user; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000187; sid:5000187; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] Connection blocked by TCP Wrappers"; content: "refused connect from"; classtype: tcp-connection; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000188; sid:5000188; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] Reverse lookup failure"; pcre: "/can't verify hostname|gethostbyaddr/"; classtype: not-suspicious; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000189; sid:5000189; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] Multiple failed login attempts"; content: "repeated login failures"; classtype: misc-attack; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000190; sid:5000190; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] User disconnected due to time out"; content: "timed out after"; classtype: not-suspicious; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000191; sid:5000191; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] Attempted access to a disabled account"; content: "Account is disabled"; classtype: unsuccessful-user; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5000192; sid:5000192; rev:2;)
#alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] Failed authentication"; content: "failed authentication from"; nocase; classtype: unsuccessful-user; program: ftpd; reference: url,wiki.quadrantsec.com/bin/view/Main/5001522; sid:5001522; rev:2;)
drop tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[FTPD] Failed authentication - Brute force"; content: "failed authentication from"; nocase; classtype: unsuccessful-user; program: ftpd; after: track by_src, count 5, seconds 300; threshold: type limit, track by_src, count 5, seconds 300; fwsam: src, 1 day; reference: url,wiki.quadrantsec.com/bin/view/Main/5000193; sid:5000193; rev:4;)
alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg: "[FTPD] User logged into an disabled account"; content: "FTP LOGIN FROM"; pcre: "/ apachei | mysql | www | nobody | nogroup | portmap | named | rpc | mail | ftp | shutdown | halt | daemon | bin | postfix | shell | info | guest | psql | user | users | console | uucp | lp | sync | sshd | cdrom | ossec | sagan /"; classtype: successful-user; reference: url,wiki.quadrantsec.com/bin/view/Main/5000412; program: sshd; sid: 5000412; rev:3;)