# Sagan openssh-geoip.rules
# Copyright (c) 2009-2020. Quadrant Information Security <www.quadrantsec.com>
# All rights reserved.
#
# Please submit any custom rules or ideas to sagan-submit@quadrantsec.com 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
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#  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#*************************************************************
#
# Not getting the source IP addresses that you'd expect?  Then you probably
# have OpenSSH's "UseDNS" set to "Yes" in your sshd_config file.  You'll
# need to set that to "No" so Sagan can "find" the source IP addresses and
# port information.


# 10.1.7.2|authpriv|info|info|56|2013-12-02|14:21:19|sshd| Accepted password for bob from 10.1.16.1 port 51860 ssh2

#alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[OPENSSH-GEOIP] Authentication success via password from outside HOME_COUNTRY"; content: "Accepted password"; default_proto: tcp; default_dst_port: $SSH_PORT; classtype: successful-user; reference: url,wiki.quadrantsec.com/bin/view/Main/5001874; normalize; program: sshd; country_code: track by_src, isnot $HOME_COUNTRY; sid: 5001874; rev:3;)
#alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[OPENSSH-GEOIP] Authentication success via publickey from outside HOME_COUNTRY"; content: "Accepted publickey"; default_proto: tcp; default_dst_port: $SSH_PORT; classtype: successful-user; reference: url,wiki.quadrantsec.com/bin/view/Main/5001875; normalize; program: sshd; country_code: track by_src, isnot $HOME_COUNTRY; sid: 5001875; rev:3;)
#alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[OPENSSH-GEOIP] Authentication success via keyboard from outside HOME_COUNTRY"; content: "Accepted keyboard-interactive"; default_proto: tcp; default_dst_port: $SSH_PORT; classtype: successful-user; reference: url,wiki.quadrantsec.com/bin/view/Main/5001876; normalize; program: sshd; country_code: track by_src, isnot $HOME_COUNTRY; sid: 5001876; rev:3;)

# New "catch all" ssh login success.  Watches for "Accepted" with a depth.

alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[OPENSSH] Authentication success from outside HOME_COUNTRY"; content: "accepted"; nocase; depth: 10; default_proto: tcp; default_dst_port: $SSH_PORT; country_code: track by_src, isnot $HOME_COUNTRY; classtype: successful-user; reference: url,wiki.quadrantsec.com/bin/view/Main/5003969; normalize; parse_src_ip: 1; program: sshd; sid:5003969; rev:1;)