Rule History

SID: 2038482 • Source: et/open

Versions (7)

Version DetailsCurrent

Rev: 1 • Aug 9, 2022, 12:00 PM

Message:

ET USER_AGENTS ErbiumStealer UA Observed

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS ErbiumStealer UA Observed"; flow:to_server,established; http.user_agent; content:"Erbium-UA-"; startswith; fast_pattern; reference:url,twitter.com/3xp0rtblog/status/1556256431904546816; classtype:trojan-activity; sid:2038482; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_09, deployment Perimeter, malware_family Erbium, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_09, reviewed_at 2025_10_24;)

Created:

Aug 9, 2022, 12:00 PM

Updated:

Aug 9, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Oct 24, 2025, 9:34 PM

Filename:

rules/emerging-user_agents.rules