""ET TROJAN W32/DoubleTap.APT Downloader CnC Beacon""

SID: 2019808

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2014_11_26, deployment Perimeter, signature_severity Major, tag c2, updated_at 2014_12_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 81

Flow: established,to_server

Contents:

• Value: "|05 01 00 01 c0 b8 3c e5 00 51|" Depth: 10

Within:

PCRE:

Special Options:

source