""ET TROJAN [401TRG] Backdoor.BEACON SSL Cert Inbound (infinitysoftwares .com)""

SID: 2031539

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_01_25, deployment Perimeter, signature_severity Major, tag c2, updated_at 2021_01_25, 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: $EXTERNAL_NET

Source Port: 443

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "|16|"

  • Value: "|0b|"

  • Value: "|06 03 55 04 03|"

  • Value: "|15|infinitysoftwares.com"

Within: 22

PCRE:

Special Options:

  • fast_pattern

source