""ET TROJAN NCSC XAgent itwm beacon v2""

SID: 2026439

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2018_10_04, deployment Perimeter, signature_severity Major, tag c2, updated_at 2018_10_04, 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: "&itwm"

Within:

PCRE: "/&itwm=[A-Za-z0-9-_]{29,35}/"

Special Options:

  • fast_pattern

source