ET EXPLOIT Mirai Infection Attempt via OS Command Injection Inbound (CVE-2021-32305)

7.0.35.0SID: 2033857Rev: 3Enabled4 views
History
Sourceet/open
Fileemerging-exploit.rules
CreatedAugust 31, 2021
UpdatedAugust 28, 2026
Classificationattempted-admin
alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Mirai Infection Attempt via OS Command Injection Inbound (CVE-2021-32305)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/search.php?search=|22|"; startswith; fast_pattern; pcre:"/^(?:[\x3b\x24\x26\x60\x7c]|\x25(?:25)?(?:3[bB]|2[46]|60|7[cC])|\x5c[rn])/R"; reference:url,unit42.paloaltonetworks.com/cve-2021-32305-websvn/; reference:cve,2021-32305; classtype:attempted-admin; sid:2033857; rev:3; metadata:created_at 2021_08_31, cve CVE_2021_32305, deployment Perimeter, malware_family Mirai, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_08_28, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;)

References

urlunit42.paloaltonetworks.com/cve-2021-32305-websvn/
cve2021-32305

Metadata

created at2021_08_31
deploymentPerimeter
malware familyMirai
confidenceMedium
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_08_28
mitre tactic idTA0008
mitre tactic nameLateral_Movement
mitre technique idT1210
mitre technique nameExploitation_Of_Remote_Services

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