""ET TROJAN Observed Malware Delivery Domain (a0917004 .xsph .ru in TLS SNI)""

SID: 2050735

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2024_02_06, deployment Perimeter, malware_family Xworm, signature_severity Major, updated_at 2024_02_06

Reference:

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|a0917004.xsph.ru"

Within: 8

PCRE:

Special Options:

  • fast_pattern

source