""ET TROJAN Observed Reverse Shell Payload Delivery Domain (opentunnel .quest) in TLS SNI""

SID: 2038825

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_13, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2022_09_13

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 443

Flow: established,to_server

Contents:

• Value: "|16|"

• Value: "|01|"

• Value: "|00 00 10|opentunnel.quest"

Within: 8

PCRE:

Special Options:

• fast_pattern

source