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

7.0.35.0SID: 2034784Rev: 3Enabled1 views
Sourceet/open
Fileemerging-hunting.rules
CreatedDecember 17, 2021
UpdatedMarch 8, 2024
Classificationmisc-activity
alert udp $HOME_NET any -> any any (msg:"ET HUNTING Possible Apache log4j RCE Attempt - Any Protocol UDP (Outbound) (CVE-2021-44228)"; content:"|24 7b|jndi|3a|"; nocase; fast_pattern; content:"|3a 2f 2f|"; within:20; reference:cve,2021-44228; classtype:misc-activity; sid:2034784; rev:3; 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 2024_03_08, reviewed_at 2024_05_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)

References

cve2021-44228

Metadata

attack targetServer
created at2021_12_17
deploymentInternal
confidenceMedium
signature severityMajor
tagCISA_KEV
updated at2024_03_08
reviewed at2024_05_07
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application

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