ET HUNTING Possible Apache log4j RCE Attempt - Any Protocol (upper TCP Bypass) (Outbound) (CVE-2021-44228) - Suricata Rule 2034785 (et/open)

ET HUNTING Possible Apache log4j RCE Attempt - Any Protocol (upper TCP Bypass) (Outbound) (CVE-2021-44228)

SID: 2034785Rev: 20 viewsHistory

Sourceet/open

CreatedDecember 17, 2021

UpdatedDecember 17, 2021

Classificationmisc-activity

alert tcp $HOME_NET any -> any any (msg:"ET HUNTING Possible Apache log4j RCE Attempt - Any Protocol (upper TCP Bypass) (Outbound) (CVE-2021-44228)"; flow:established,to_server; content:"|24 7b|jndi|3a|"; nocase; fast_pattern; content:"|24 7b|upper|3a|"; distance:0; reference:cve,2021-44228; classtype:misc-activity; sid:2034785; rev:2; metadata:attack_target Server, created_at 2021_12_17, cve CVE_2021_44228, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_12_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)

References

cve	2021-44228

Metadata

attack targetServer

created at2021_12_17

cveCVE-2021-44228

deploymentInternal

confidenceMedium

signature severityMajor

tagCISA_KEV

updated at2021_12_17

mitre tactic idTA0001

mitre tactic nameInitial_Access

mitre technique idT1190

mitre technique nameExploit_Public_Facing_Application

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