Rule History

SID: 2033598 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Jul 28, 2021, 12:00 PM

Message:

ET MALWARE Kimsuky Related Maldoc Activity (HEAD)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kimsuky Related Maldoc Activity (HEAD)"; flow:established,to_server; http.method; content:"HEAD"; http.uri; content:".dotm?q=6"; endswith; fast_pattern; http.user_agent; content:"Office"; http.header_names; content:!"Accept"; content:!"Referer"; reference:md5,a9b6cf8d8d0a67da4eea269dab16fe99; reference:url,mp.weixin.qq.com/s/og8mfnqoKZsHlOJdIDKYgQ; classtype:trojan-activity; sid:2033598; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_07_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_28;)

Created:

Jul 28, 2021, 12:00 PM

Updated:

Jul 28, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 9, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules