""ET TROJAN ModPipe CnC Activity (POST)""
SID: 2031208
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2020_11_16, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2020_11_16
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "User-Agent|3a 20|Mozilla/4.0|20|(compatible|3b 20|MSIE 8.0|3b 20|Windows|20|NT|20|6.1|3b 20|Trident/4.0)|0d 0a|"
-
Value: "POST /robots.txt HTTP/1."
Within:
PCRE: "/^Accept[^\r\n]+\r\nContent-Length[^\r\n]+\r\nContent-Type[^\r\n]+\r\nUser-Agent[^\r\n]+\r\nHost[^\r\n]+\r\nCache-Control[^\r\n]+\r\n(?:\r\n)?$/H"
Special Options:
-
http_header
-
fast_pattern