From bb85eead391f0063fb04c48afb716b13cc2844bf Mon Sep 17 00:00:00 2001 From: Alex 'AdUser' Z Date: Mon, 23 Jan 2023 15:16:37 +1000 Subject: [PATCH] + filters/ --- filters/asterisk.preg | 4 ++++ filters/coturn.preg | 2 ++ filters/dovecot.preg | 6 ++++++ filters/exim.pcre | 10 ++++++++++ filters/gitea.preg | 3 +++ filters/named.preg | 7 +++++++ filters/nginx-bots.pcre | 32 ++++++++++++++++++++++++++++++++ filters/postfix.preg | 11 +++++++++++ filters/proftpd.preg | 9 +++++++++ filters/ssh.preg | 17 +++++++++++++++++ 10 files changed, 101 insertions(+) create mode 100644 filters/asterisk.preg create mode 100644 filters/coturn.preg create mode 100644 filters/dovecot.preg create mode 100644 filters/exim.pcre create mode 100644 filters/gitea.preg create mode 100644 filters/named.preg create mode 100644 filters/nginx-bots.pcre create mode 100644 filters/postfix.preg create mode 100644 filters/proftpd.preg create mode 100644 filters/ssh.preg diff --git a/filters/asterisk.preg b/filters/asterisk.preg new file mode 100644 index 0000000..f2ccd44 --- /dev/null +++ b/filters/asterisk.preg @@ -0,0 +1,4 @@ +SECURITY.* SecurityEvent="FailedACL".*RemoteAddress="IPV[46]/[TU][CD]P//[0-9]+" +SECURITY.* SecurityEvent="InvalidAccountID".*RemoteAddress="IPV[46]/[TU][CD]P//[0-9+]+" +SECURITY.* SecurityEvent="ChallengeResponseFailed".*RemoteAddress="IPV[46]/[TU][CD]P//[0-9]+" +SECURITY.* SecurityEvent="InvalidPassword".*RemoteAddress="IPV[46]/[TU][CD]P//[0-9]+" diff --git a/filters/coturn.preg b/filters/coturn.preg new file mode 100644 index 0000000..54c9ef7 --- /dev/null +++ b/filters/coturn.preg @@ -0,0 +1,2 @@ +# set: defscore=5 +closed \(2nd stage\), user <> .* remote :[0-9]+, reason: allocation watchdog determined stale session state diff --git a/filters/dovecot.preg b/filters/dovecot.preg new file mode 100644 index 0000000..0d0c71f --- /dev/null +++ b/filters/dovecot.preg @@ -0,0 +1,6 @@ +pop3-login: Aborted login \(auth failed, [0-9]+ attempts in [0-9]+ secs\): .* rip= +imap-login: Aborted login \(auth failed, [0-9]+ attempts in [0-9]+ secs\): .* rip= +pop3-login: Disconnected \(auth failed, [0-9]+ attempts in [0-9]+ secs\): .* rip= +imap-login: Disconnected \(auth failed, [0-9]+ attempts in [0-9]+ secs\): .* rip= +# set: defscore=5 +submission-login: Client has quit the connection \(tried to use disallowed plaintext auth\): .* rip= diff --git a/filters/exim.pcre b/filters/exim.pcre new file mode 100644 index 0000000..98fcbea --- /dev/null +++ b/filters/exim.pcre @@ -0,0 +1,10 @@ +# set: defscore=10 +SMTP protocol synchronization error \(input sent without waiting for greeting\): rejected connection from .*\[\] +SMTP protocol synchronization error \(next input sent too soon: pipelining was not advertised\): rejected .*\[\] +rejected [HE][EH]HLO from \[\]: syntactically invalid argument +\[\] .* host is listed in .+ +\[\] .* relay not permitted +\[\] .* rejected after DATA: This message was detected as possible malware +# set: defscore=5 +\[\] .* too many connections from that IP address +\[\] .* temporarily rejected RCPT \<\S+\>: lowest numbered MX record points to local host diff --git a/filters/gitea.preg b/filters/gitea.preg new file mode 100644 index 0000000..7b3be5b --- /dev/null +++ b/filters/gitea.preg @@ -0,0 +1,3 @@ +Failed authentication attempt for [[:print:]]+ from +Failed authentication attempt from +invalid credentials from diff --git a/filters/named.preg b/filters/named.preg new file mode 100644 index 0000000..d568699 --- /dev/null +++ b/filters/named.preg @@ -0,0 +1,7 @@ +# set: defscore=10 +#[0-9]+ .* query \(cache\) '[0-9.]+.in-addr.arpa/(PTR|SOA)/IN' denied +# requests to '.' or top-level domains +#[0-9]+ .* query \(cache\) '[a-z.]+/ANY/IN' denied +#[0-9]+ .* query \(cache\) '[a-z.]+/A/IN' denied +# set: defscore=1 +#[0-9]+ .* query \(cache\) '[0-9a-z.-]+/RRSIG/IN' denied diff --git a/filters/nginx-bots.pcre b/filters/nginx-bots.pcre new file mode 100644 index 0000000..b457284 --- /dev/null +++ b/filters/nginx-bots.pcre @@ -0,0 +1,32 @@ +# set: defscore=15 +# h4x0rs + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/(shell|cmd|x)\.(php|cgi) + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/w00tw00t + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/+Ringing\.at\.your\.dorbell + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/.*(wget|curl)(\\x|%)20https?:// + .* "(GET|HEAD|POST) .*/bin/(ba|c|z)?sh( |\\x20|%20)-c + .* "(\\x[0-9a-z]{2,6})+" 400 +# set: defscore=10 +# phpmyadmin and variations + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/+(php|sqlite)-?(manager)? + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/+(php|pg|sql)-?my-?admin + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/+pma[0-9]* + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/+((my|pg)(sql)?|db|msd?)-?(admin|dumper|dump|manager) +# set: defscore=5 +# open proxy search + .* "(GET|HEAD|POST) https?://[a-z-\.]+proxyradar\.com + .* "CONNECT [a-z-\.]*proxyradar\.com + .* "CONNECT [a-z-\.]*proxytest\.zmap\.io + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/+testproxy\.php +# set: defscore=2 +# search bots + .* "(GET|HEAD|POST) .* "python-(requests|urllib)/[0-9\.]+ + .* "(GET|HEAD|POST) .* "AhrefsBot/[0-9a-z\.]+ + .* "(GET|HEAD|POST) .* "DotBot/[0-9a-z\.]+ + .* "(GET|HEAD|POST) .* "MauiBot + .* "(GET|HEAD|POST) .* SiteExplorer/[0-9a-z\.]+ + .* "(GET|HEAD|POST) .* MJ12bot + .* "(GET|HEAD|POST) .* WebIndex +# shit-coded php cms + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/.*/wp-login.php + .* "(GET|HEAD|POST) (https?://[0-9a-z.-]+)?(:[0-9]*)?/+(joomla|cms)/administrator diff --git a/filters/postfix.preg b/filters/postfix.preg new file mode 100644 index 0000000..22b7abb --- /dev/null +++ b/filters/postfix.preg @@ -0,0 +1,11 @@ +# set: defscore=10 +NOQUEUE: reject: RCPT from [[:print:]]+\[\]: 450 4\.7\.1 Client host rejected +NOQUEUE: reject: RCPT from [[:print:]]+\[\]: 454 4\.7\.1 Service unavailable; Client host \[[[:print:]]+\] blocked +NOQUEUE: reject: RCPT from [[:print:]]+\[\]: 454 4\.7\.1 <[[:print:]]+>: Relay access denied +NOQUEUE: reject: RCPT from [[:print:]]+\[\]: 554 5\.7\.1 <[[:print:]]+>: Relay access denied +NOQUEUE: reject: RCPT from [[:print:]]+\[\]: 550 5\.1\.1 <[[:print:]]+>: Recipient address rejected: undeliverable address +warning: [[:print:]]+\[\]: SASL [A-Z0-9-]+ authentication failed +# set: defscore=5 +NOQUEUE: reject: RCPT from [[:print:]]+\[\]: 450 4\.7\.1 <[[:print:]]+>: Helo command rejected: Host not found +NOQUEUE: reject: RCPT from [[:print:]]+\[\]: 504 5\.5\.2 <[[:print:]]+>: Helo command rejected: need fully-qualified hostname +lost connection after AUTH from [[:print:]]+\[\] diff --git a/filters/proftpd.preg b/filters/proftpd.preg new file mode 100644 index 0000000..4aff490 --- /dev/null +++ b/filters/proftpd.preg @@ -0,0 +1,9 @@ +# set: defscore=30 +\(.*\[\]\): SECURITY VIOLATION: Root login attempted +\(.*\[\]\): SECURITY VIOLATION: Passive connection from .* rejected +# set: defscore=15 +\(.*\[\]\): USER .*: no such user found +\(.*\[\]\): USER .* \(Login failed\): Incorrect password +# set: defscore=1 +\(.*\[\]\): FTP session opened +\(.*\[\]\): crypt\(3\) failed diff --git a/filters/ssh.preg b/filters/ssh.preg new file mode 100644 index 0000000..e675875 --- /dev/null +++ b/filters/ssh.preg @@ -0,0 +1,17 @@ +# set: defscore=15 +User [[:print:]]+ from not allowed because listed in DenyUsers +User [[:print:]]+ from not allowed because a group is listed in DenyGroups +# set: defscore=10 +User [[:print:]]+ from not allowed because not listed in AllowUsers +User [[:print:]]+ from not allowed because not in any group +User [[:print:]]+ from not allowed because none of user's groups are listed in AllowGroups +[Aa]uthentication failure for .* from ( via [[:print:]]*)? +[Aa]uthentication error for .* from ( via [[:print:]]*)? +Failed password for .* from +# set: defscore=5 +User not known to the underlying authentication module for .* from +Invalid user [[:print:]]+ from +# set: defscore=3 +refused connect from [[:print:]]+ \(\) +Did not receive identification string from +Connection closed by ( port [0-9]+)? \[preauth\]