ET MALWARE Chrysalis Backdoor CnC Domain in TLS SNI (skycloudcenter .com)
Sourceet/open
CreatedFebruary 2, 2026
UpdatedFebruary 2, 2026
Classificationdomain-c2
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Chrysalis Backdoor CnC Domain in TLS SNI (skycloudcenter .com)"; flow:established,to_server; tls.sni; dotprefix; content:".skycloudcenter.com"; endswith; fast_pattern; reference:url,www.rapid7.com/blog/post/tr-chrysalis-backdoor-dive-into-lotus-blossoms-toolkit/; classtype:domain-c2; sid:2067264; rev:1; metadata:affected_product Notepad__, created_at 2026_02_02, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_02_02;)
Metadata
affected productNotepad__
created at2026_02_02
performance impactLow
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_02_02
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