""ET TROJAN Observed Earth Krahang APT Domain (security-microsoft .net in TLS SNI)""
SID: 2051858
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2024_03_28, deployment Perimeter, signature_severity Major, updated_at 2024_03_28
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 16|security-microsoft.net"
Within: 8
PCRE:
Special Options:
- fast_pattern