Rule History

SID: 2068726 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 1 • Apr 14, 2026, 12:00 PM

Message:

ET MALWARE Observed WallStealer Domain (flashanka .icu in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed WallStealer Domain (flashanka .icu in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".flashanka.icu"; endswith; fast_pattern; reference:md5,2d829b88d84ad3fcbb2c219f3ccd2651; classtype:trojan-activity; sid:2068726; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_04_14, deployment Perimeter, malware_family WallStealer, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_04_14;)

Created:

Apr 14, 2026, 12:00 PM

Updated:

Apr 14, 2026, 12:00 PM

DB Created:

Apr 14, 2026, 9:34 PM

DB Updated:

Apr 15, 2026, 9:34 PM

Filename:

rules/emerging-malware.rules