""ET TROJAN PowerShell Downloader CnC Activity""
SID: 2030151
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_05_11, deployment Perimeter, signature_severity Major, updated_at 2020_05_11
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "POST"
-
Value: ".NET|20|"
-
Value: "E9PQ"
-
Value: !"Referer|3a 20|"
Within: 4
PCRE: "/^User-Agent\x3a\x20[^\r\n]+.NET\s[a-zA-Z0-9+\/]{2}E9PQ[^\x20]+\x3b)\r\n/Hm"
Special Options:
-
http_method
-
http_header
-
http_header
-
fast_pattern
-
http_header