Suricata: nmap scan non corrisponde alle regole

Question

Suricata: nmap scan non corrisponde alle regole

#1 da (0 voti)

2

Sto usando suricata con emerging-scan.rules e altre regole. Le regole sono caricate in suricata.yaml, homenet e ext_net sono configurate correttamente. Per testare il rilevamento di suricata ho usato nmap -sS nella macchina in cui è installato Suricata. Ma nulla è stato rilevato.

Come regole per rilevare il nmap -sS ho usato le seguenti emergin-scan.rules:

alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sS window 2048"; fragbits:!D; dsize:0; flags:S,12; ack:0; window:2048; threshold: type both, track by_dst, count 1, seconds 60; reference:url,doc.emergingthreats.net/2000537; classtype:attempted-recon; sid:2000537; rev:8; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
alert  ip $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sO"; dsize:0; ip_proto:21; threshold: type both, track by_dst, count 1, seconds 60; reference:url,doc.emergingthreats.net/2000536; classtype:attempted-recon; sid:2000536; rev:7; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sS window 1024"; fragbits:!D; dsize:0; flags:S,12; ack:0; window:1024; threshold: type both, track by_dst, count 1, seconds 60; reference:url,doc.emergingthreats.net/2009582; classtype:attempted-recon; sid:2009582; rev:3; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sS window 3072"; fragbits:!D; dsize:0; flags:S,12; ack:0; window:3072; threshold: type both, track by_dst, count 1, seconds 60; reference:url,doc.emergingthreats.net/2009583; classtype:attempted-recon; sid:2009583; rev:3; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sS window 4096"; fragbits:!D; dsize:0; flags:S,12; ack:0; window:4096; threshold: type both, track by_dst, count 1, seconds 60; reference:url,doc.emergingthreats.net/2009584; classtype:attempted-recon; sid:2009584; rev:2; metadata:created_at 2010_07_30, updated_at 2010_07_30;)

ids

posta frank 19.06.2018 - 11:17

fonte

1 risposta

Leggi altre domande sui tag ids

La fiducia del Web è stata compromessa perché i server sono stati violati? Come aggiornare dinamicamente le informazioni di autorizzazione in un KDC?

score 0 · Answer 1

Non sono sicuro che sia stato il caso quando hai postato questa domanda, ma tutte le firme che hai postato sopra sono state commentate da emerging-scan.rules.

link

Ecco tutte le restanti regole nmap in quella libreria che non sono commentate.

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN Nmap Scripting Engine User-Agent Detected (Nmap NSE)"; flow:to_server,established; content:"Nmap NSE"; http_user_agent; reference:url,doc.emergingthreats.net/2009359; classtype:web-application-attack; sid:2009359; rev:4; metadata:created_at 2010_07_30, updated_at 2010_07_30;)

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN Nmap Scripting Engine User-Agent Detected (Nmap Scripting Engine)"; flow:to_server,established; content:"Mozilla/5.0 (compatible|3b| Nmap Scripting Engine"; nocase; http_user_agent; depth:46; reference:url,doc.emergingthreats.net/2009358; classtype:web-application-attack; sid:2009358; rev:5; metadata:created_at 2010_07_30, updated_at 2010_07_30;)

alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET SCAN NMAP SQL Spider Scan"; flow:established,to_server; content:"GET"; http_method; content:" OR sqlspider"; http_uri; reference:url,nmap.org/nsedoc/scripts/sql-injection.html; classtype:web-application-attack; sid:2013778; rev:2; metadata:created_at 2011_10_19, updated_at 2011_10_19;)

alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"ET SCAN NMAP SIP Version Detect OPTIONS Scan"; flow:established,to_server; content:"OPTIONS sip|3A|nm SIP/"; depth:19; classtype:attempted-recon; sid:2018317; rev:1; metadata:created_at 2014_03_25, updated_at 2014_03_25;)

alert tcp $EXTERNAL_NET any -> $HOME_NET 5060:5061 (msg:"ET SCAN NMAP SIP Version Detection Script Activity"; content:"Via|3A| SIP/2.0/TCP nm"; content:"From|3A| <sip|3A|nm@nm"; within:150; fast_pattern; classtype:attempted-recon; sid:2018318; rev:1; metadata:created_at 2014_03_25, updated_at 2014_03_25;)

alert udp $EXTERNAL_NET 10000: -> $HOME_NET 10000: (msg:"ET SCAN NMAP OS Detection Probe"; dsize:300; content:"CCCCCCCCCCCCCCCCCCCC"; fast_pattern:only; content:"CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC"; depth:255; content:"CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC"; within:45; classtype:attempted-recon; sid:2018489; rev:3; metadata:created_at 2014_05_20, updated_at 2014_05_20;)

alert tcp any any -> $HOME_NET any (msg:"ET SCAN Nmap NSE Heartbleed Request"; flow:established,to_server; content:"|18 03|"; depth:2; byte_test:1,<,4,2; content:"|01|"; offset:5; depth:1; byte_test:2,>,2,3; byte_test:2,>,200,6; content:"|40 00|Nmap ssl-heartbleed"; fast_pattern:2,19; classtype:attempted-recon; sid:2021023; rev:1; metadata:created_at 2015_04_28, updated_at 2015_04_28;)

alert tcp $HOME_NET any -> any any (msg:"ET SCAN Nmap NSE Heartbleed Response"; flow:established,from_server; content:"|18 03|"; depth:2; byte_test:1,<,4,2; byte_test:2,>,200,3; content:"|40 00|Nmap ssl-heartbleed"; fast_pattern:2,19; classtype:attempted-recon; sid:2021024; rev:1; metadata:created_at 2015_04_28, updated_at 2015_04_28;)

alert http $HOME_NET any -> any any (msg:"ET SCAN Possible Nmap User-Agent Observed"; flow:to_server,established; content:"|20|Nmap"; http_user_agent; fast_pattern; metadata: former_category SCAN; classtype:web-application-attack; sid:2024364; rev:3; metadata:affected_product Any, attack_target Client_and_Server, deployment Perimeter, signature_severity Audit, created_at 2017_06_08, performance_impact Low, updated_at 2017_06_13;)

Ho provato ad attivarli, ma in realtà non ho la configurazione giusta per provare come molti richiedono connessioni esterne a interne.