""ET TROJAN PlugX CnC Beacon""

SID: 2036858

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_08_20, deployment Perimeter, performance_impact Significant, signature_severity Major, tag c2, updated_at 2024_04_22, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • 076ae76dcd0946ff913a9ce033e0ca55

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST /" Depth: 6

  • Value: !"Accept-"

  • Value: !"Referer|3a|"

  • Value: "?id="

  • Value: "|0d 0a|Accept|3a 20|/|0d 0a|"

Within: 15

PCRE: "/^[^\x3a]+\x3a\x20\d+\r\n[^\x3a]+\x3a\x20\d+\r\n[^\x3a]+\x3a\x20\d+\r\n[^\x3a]+\x3a\x20\d+\r\nUser-Agent\x3a/Ri"

Special Options:

  • fast_pattern

source