ET MALWARE Observed Grandoreiro Stealer Domain (mapfre .homesecuritypc .com) in TLS SNI
Sourceet/open
CreatedApril 11, 2025
UpdatedApril 11, 2025
Classificationdomain-c2
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Grandoreiro Stealer Domain (mapfre .homesecuritypc .com) in TLS SNI"; flow:established,to_server; tls.sni; bsize:25; content:"mapfre.homesecuritypc.com"; fast_pattern; reference:url,lab52.io/blog/2805-2; classtype:domain-c2; sid:2061477; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2025_04_11, deployment Perimeter, malware_family Grandoreiro_Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_04_11, mitre_tactic_id TA0037, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)
References
Metadata
affected productWindows_XP_Vista_7_8_10_Server_32_64_Bit
attack targetClient_Endpoint
created at2025_04_11
deploymentPerimeter
malware familyGrandoreiro_Stealer
performance impactLow
confidenceHigh
signature severityMajor
updated at2025_04_11
mitre tactic idTA0037
mitre tactic nameCommand_And_Control
mitre technique idT1041
mitre technique nameExfiltration_Over_C2_Channel
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