""ET TROJAN Cloud Atlas CnC Beacon""

SID: 2019919

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2014_12_11, deployment Perimeter, signature_severity Major, tag c2, updated_at 2014_12_11, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST /check.jsp HTTP/1." Depth: 23

  • Value: !"Referer|3a|"

  • Value: "Content-Type|3a 20|application/octet-stream|0d 0a|"

Within:

PCRE:

Special Options:

source