Rule History

SID: 2034500 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 1 • Nov 18, 2021, 12:00 PM

Message:

ET MALWARE Unattributed WebShell Access - File Upload

Rule:

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET MALWARE Unattributed WebShell Access - File Upload"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"exec_code=put"; fast_pattern; content:"delimiter="; content:"dst="; reference:url,thedfirreport.com/2021/11/15/exchange-exploit-leads-to-domain-wide-ransomware/; classtype:attempted-admin; sid:2034500; rev:1; metadata:created_at 2021_11_18, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_18;)

Created:

Nov 18, 2021, 12:00 PM

Updated:

Nov 18, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 8, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules