Versions (4)
Version DetailsCurrent
Rev: 2 • Apr 1, 2022, 12:00 PMET MALWARE Observed BlackGuard_v2 Domain (onetwostep .at) in TLS SNI
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed BlackGuard_v2 Domain (onetwostep .at) in TLS SNI"; flow:established,to_server; tls.sni; content:"onetwostep.at"; fast_pattern; reference:url,www.zscaler.com/blogs/security-research/analysis-blackguard-new-info-stealer-malware-being-sold-russian-hacking; reference:url,blog.cyble.com/2022/04/01/dissecting-blackguard-info-stealer/; classtype:trojan-activity; sid:2035715; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_04_01, deployment Perimeter, deprecation_reason Relevance, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_10;)
Apr 1, 2022, 12:00 PM
May 10, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 4, 2025, 9:34 PM
rules/emerging-malware.rules