""ET TROJAN Nerbian RAT CnC Checkin""
SID: 2036426
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2022_04_29, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2022_04_29
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "GET"
-
Value: "/pub/health_check.php"
Within:
PCRE: "/^Host\x3a\x20[^\r\n]+\r\nUser-Agent\x3a\x20[^\r\n]+\r\nAccept-Encoding\x3a\x20[^\r\n]+[\r\n]+$/H"
Special Options:
-
http_method
-
http_uri
-
fast_pattern