this is the table of one buggy log $($buggy server generating messages and trasmitting them to a virtual machine suricata on which we have FileBeat with module system enabled so we observe the following for one buggy log$)\_$id: o$3$taRY$0$BU$-$qlxAgMWA$79$

$\_$index: $.$ds$-$filebeat$-8\mathrm{.}11\mathrm{.}4-2024\mathrm{.}01\mathrm{.}15-000001$

$\_$score: $-$

@timestamp: Jan $26,2024$ @ $11$:$39$:$16\mathrm{.}000$

agent.ephemeral$\_$id: e$52$dd$3$ac$-$cdff$-46$fc$-8$d$7$a$-68892613$c$4$a$5$

agent.hostname: firewall

agent.id: bc$38$ef$4$a$-0$e$57-42$d$7-$b$151-344834773$fec

agent.name: firewall

agent.type: filebeat

agent.version: $8\mathrm{.}11\mathrm{.}4$

ecs.version: $1\mathrm{.}12\mathrm{.}0$

event.dataset: system.syslog

event.ingested: Jan $26,2024$ @ $11$:$39$:$25\mathrm{.}432$

event.kind: event

event.module: system

event.timezone: $+01$:$00$

fileset.name: syslog

host.architecture: x$86\_64$

host.containerized: false

host.hostname: $192\mathrm{.}168\mathrm{.}5\mathrm{.}2$

host.id: f$7$b$674849$cbf$4$d$5$ca$658$b$4$bb$2$ef$869$a$7$

host.ip: $[192\mathrm{.}168\mathrm{.}5\mathrm{.}1,192\mathrm{.}168\mathrm{.}56\mathrm{.}3,192\mathrm{.}168\mathrm{.}6\mathrm{.}1,10\mathrm{.}0\mathrm{.}5\mathrm{.}15]$

host.mac: $[08-00-27-60-21-18,08-00-27-6$A$-$CE$-39,08-00-27-$D$7-33-75,08-00-27-$E$6-20-$D$9]$

host.name: firewall

host.os$.$codename: bullseye

host.os$.$family: debian

host.os$.$kernel: $5\mathrm{.}10\mathrm{.}0-9-$amd$64$

host.os$.$name: Debian GNU$/$Linux

host.os$.$platform: debian

host.os$.$type: linux

host.os$.$version: $11($bullseye$)$

input.type: log

log$.$file.path: $/$var$/$log$/$syslog

log$.$offset: $308,726$

message: GET $/../../../../../$etc$/./$shadow HTTP$/1\mathrm{.}1$

process.name: buggy

related.hosts: $192\mathrm{.}168\mathrm{.}5\mathrm{.}2$

service.type: system. and the alerts generated by suricata are: $\_$id PnqbQo$0$BU$-$qlxAgMJ$\_$tM

$\_$index $.$ds$-$filebeat$-8\mathrm{.}11\mathrm{.}4-2024\mathrm{.}01\mathrm{.}15-000001$

$\_$score $-$

@timestamp Jan $25,2024$@ $22$:$51$:$19\mathrm{.}000$

agent.ephemeral$\_$id ef$48918$e$-0870-47$ea$-9169-8$bba$32245$f$4$e

agent.hostname firewall

agent.id bc$38$ef$4$a$-0$e$57-42$d$7-$b$151-344834773$fec

agent.name firewall

agent.type filebeat

agent.version $8\mathrm{.}11\mathrm{.}4$

ecs.version $1\mathrm{.}12\mathrm{.}0$

event.dataset system.syslog

event.ingested Jan $25,2024$@ $22$:$51$:$20\mathrm{.}907$

event.kind event

event.module system

event.timezone $+01$:$00$

fileset.name syslog

host.architecture x$86\_64$

host.containerized false

host.hostname $192\mathrm{.}168\mathrm{.}5\mathrm{.}2$

host.id f$7$b$674849$cbf$4$d$5$ca$658$b$4$bb$2$ef$869$a$7$

host.ip $[192\mathrm{.}168\mathrm{.}5\mathrm{.}1,192\mathrm{.}168\mathrm{.}56\mathrm{.}3,192\mathrm{.}168\mathrm{.}6\mathrm{.}1,10\mathrm{.}0\mathrm{.}5\mathrm{.}15]$

host.mac $[08-00-27-60-21-18,08-00-27-6$A$-$CE$-39,08-00-27-$D$7-33-75,08-00-27-$E$6-20-$D$9]$

host.name firewall

host.os$.$codename bullseye

host.os$.$family debian

host.os$.$kernel $5\mathrm{.}10\mathrm{.}0-9-$amd$64$

host.os$.$name Debian GNU$/$Linux

host.os$.$platform debian

host.os$.$type linux

host.os$.$version $11($bullseye$)$

input.type log

log$.$file.path $/$var$/$log$/$syslog

log$.$offset $12,775,800$

message GET $/../../../../../$etc$/./$shadow HTTP$/1\mathrm{.}1$

process.name buggy

related.hosts $192\mathrm{.}168\mathrm{.}5\mathrm{.}2$

service.type system. now the goal is to creat an event correlation rule to correlate that triggers alerts if an event cased bvy a directory traversalattack in the BuggyHTTP is followed within $30$ seconds at most, by a corresponding alert issued by the suricata IDS. i have already tried

$[$ network where event.category $==$ "intrusion$\_$detection" and rule.category $==$ "Information Leak" and source.port $==7979$ and source.port $==7979]$

$[$ process where process.name $==$ "buggy"$]$