Rule History

SID: 2034790 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 2 • Dec 17, 2021, 12:00 PM

Message:

ET EXPLOIT Possible Apache log4j RCE Attempt (tcp corba) (Outbound) (CVE-2021-44228)

Rule:

alert tcp $HOME_NET any -> any any (msg:"ET EXPLOIT Possible Apache log4j RCE Attempt (tcp corba) (Outbound) (CVE-2021-44228)"; flow:established,to_server; content:"|24 7b|jndi|3a|corba|3a|"; fast_pattern; reference:cve,2021-44228; classtype:attempted-admin; sid:2034790; rev:2; metadata:attack_target Client_and_Server, created_at 2021_12_17, cve CVE_2021_44228, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_17;)

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 8, 2025, 9:34 PM

Filename:

rules/emerging-exploit.rules