""ET TROJAN NCSC XAgent itwm beacon v1""
SID: 2026438
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