""ET TROJAN W32/Siggen.Dropper CnC Beacon""

SID: 2019515

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2014_10_27, deployment Perimeter, signature_severity Major, tag c2, updated_at 2014_10_27, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • ee363de2168aab353c829434189350e4

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: ".jpg?log="

  • Value: "&ts="

Offset: 11

  • Value: "&act="

  • Value: "client|3a 20|"

  • Value: !"Referer|3a|"

Within:

PCRE:

Special Options:

  • http_uri

  • http_uri

  • http_uri

  • http_header

  • http_header

source