""ET TROJAN Win32/Blacknix CnC Heartbeat""

SID: 2027732

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 2019_07_19, deployment Perimeter, signature_severity Major, tag Blacknix, updated_at 2019_07_19

Reference:

• md5

• b4e95d3ec39cf8c7347ca1c64cfed631

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: to_server,established

Contents:

• Value: "|7c 78 01|" Depth: 3 Offset: 2

Within:

PCRE: "/^[0-9]{2}\x7cx/"

Special Options:

source