Rule History

SID: 2032003 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Mar 12, 2021, 12:00 PM

Message:

ET MALWARE ShadowPad CnC Domain in DNS Lookup (soft .mssysinfo .xyz)

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE ShadowPad CnC Domain in DNS Lookup (soft .mssysinfo .xyz)"; dns.query; content:"soft.mssysinfo.xyz"; nocase; bsize:18; reference:url,www.welivesecurity.com/2021/03/10/exchange-servers-under-siege-10-apt-groups/; classtype:command-and-control; sid:2032003; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_03_12, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_12;)

Created:

Mar 12, 2021, 12:00 PM

Updated:

Mar 12, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 15, 2025, 9:36 PM

Filename:

rules/emerging-malware.rules