Rule History

SID: 2034798 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 2 • Dec 17, 2021, 12:00 PM

Message:

ET EXPLOIT Apache log4j RCE Attempt - Nested lower (tcp) (Outbound) (CVE-2021-44228)

Rule:

alert tcp $HOME_NET any -> any any (msg:"ET EXPLOIT Apache log4j RCE Attempt - Nested lower (tcp) (Outbound) (CVE-2021-44228)"; flow:established,to_server; content:"|24 7b 24 7b|lower|3a 24 7b|lower|3a|jndi"; fast_pattern; reference:cve,2021-44228; classtype:attempted-admin; sid:2034798; rev:2; metadata:attack_target Server, created_at 2021_12_17, cve CVE_2021_44228, deployment Perimeter, deployment Internal, confidence High, 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;)

Created:

Dec 17, 2021, 12:00 PM

Updated:

Dec 17, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 21, 2024, 3:00 AM

Filename:

rules/emerging-exploit.rules