Versions (4)
Version DetailsCurrent
Rev: 1 • Oct 4, 2018, 12:00 PMET MALWARE NCSC XAgent itwm beacon v1
alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE NCSC XAgent itwm beacon v1"; flow:established,to_server; content:"/?itwm"; fast_pattern; pcre:"/itwm=[A-Za-z0-9\-\_]{29,35}/"; reference:url,www.ncsc.gov.uk/content/files/protected_files/article_files/IOC-APT28-malware-advisory.pdf; classtype:targeted-activity; sid:2026438; rev:1; metadata:attack_target Client_Endpoint, created_at 2018_10_04, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2019_07_26, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)
Oct 4, 2018, 12:00 PM
Jul 26, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules