Rule History

SID: 2044339 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Feb 24, 2023, 12:00 PM

Message:

ET MALWARE Observed NimPlant UA (NimPlant)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed NimPlant UA (NimPlant)"; flow:established,to_server; http.user_agent; content:"NimPlant C2 Client"; bsize:18; fast_pattern; reference:url,github.com/chvancooten/NimPlant; classtype:trojan-activity; sid:2044339; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_02_24, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_24; target:src_ip;)

Created:

Feb 24, 2023, 12:00 PM

Updated:

Feb 24, 2023, 12:00 PM

DB Created:

Feb 25, 2023, 12:00 AM

DB Updated:

Aug 25, 2025, 9:35 PM

Filename:

rules/emerging-malware.rules