Rule History

SID: 2035127 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Feb 8, 2022, 12:00 PM

Message:

ET MALWARE Cobalt Strike Related Domain in DNS Lookup (sdilok .com)

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Cobalt Strike Related Domain in DNS Lookup (sdilok .com)"; dns.query; content:"sdilok.com"; nocase; bsize:10; reference:url,news.sophos.com/en-us/2022/01/19/zloader-installs-remote-access-backdoors-and-delivers-cobalt-strike/; classtype:domain-c2; sid:2035127; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_02_08, deployment Perimeter, malware_family Cobalt_Strike, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_08;)

Created:

Feb 8, 2022, 12:00 PM

Updated:

Feb 8, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 5, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules