""ET TROJAN Lemon_Duck Powershell CnC Checkin M6""

SID: 2033020

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_05_24, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_05_24

Reference:

  • md5

  • 293b4a6f18fdf5146b92e87e51cf8aa1

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: ".jsp?&"

  • Value: "&"

  • Value: "-"

  • Value: "&"

  • Value: "|3a|"

  • Value: "&"

  • Value: "&"

  • Value: "&"

  • Value: "&"

  • Value: "&"

  • Value: !"User-Agent|3a 20|"

  • Value: !"Accept"

  • Value: !"Referer|3a 20|"

Within: 1

PCRE: "/Host\x3a\x20[^\r\n]+\r\nConnection\x3a\x20[^\r\n]+[\r\n\r\n]$/Hm"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_header

  • http_header

  • http_header

source