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

SID: 2033856Rev: 30 viewsHistory

Sourceet/open

CreatedAugust 31, 2021

UpdatedSeptember 22, 2021

Classificationattempted-admin

alert http [$HOME_NET,$HTTP_SERVERS] any -> any any (msg:"ET EXPLOIT Possible Mirai Infection Attempt via OS Command Injection Outbound (CVE-2021-32305)"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"/search.php?search=|22 3b|/bin/bash+wget+http://"; fast_pattern; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/R"; content:"|3b|+"; distance:0; within:50; reference:url,unit42.paloaltonetworks.com/cve-2021-32305-websvn/; reference:cve,2021-32305; classtype:attempted-admin; sid:2033856; 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 2021_09_22, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;)

References

url	unit42.paloaltonetworks.com/cve-2021-32305-websvn/
cve	2021-32305

Metadata

created at2021_08_31

cveCVE-2021-32305

deploymentPerimeter

malware familyMirai

confidenceMedium

signature severityMajor

tagDescription_Generated_By_Proofpoint_Nexus

updated at2021_09_22

mitre tactic idTA0008

mitre tactic nameLateral_Movement

mitre technique idT1210

mitre technique nameExploitation_Of_Remote_Services

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