""ET MOBILE_MALWARE Observed NSO Group CnC Domain in TLS SNI (stilloak .net)""
SID: 2031443
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Mobile_Client, created_at 2020_12_21, deployment Perimeter, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2020_12_21
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
-
Value: "|16|"
-
Value: "|01|"
-
Value: "|00 00 0c|stilloak.net"
Within: 8
PCRE:
Special Options:
- fast_pattern