""ET TROJAN Suspected Stitch Variant Backdoor CnC""

SID: 2029794

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2020_04_02, deployment Perimeter, malware_family Stitch, performance_impact Low, signature_severity Major, updated_at 2021_09_09

Reference:

  • md5

  • ec993ff561cbc175953502452bfa554a

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "|00 00 00 0f|stitch626hctits"

  • Value: !"Referer|3a 20|"

  • Value: !"User-Agent|3a 20|"

  • Value: !"Connection|3a 20|"

  • Value: !"Host|3a 20|"

  • Value: !"Keep-Alive:|3a 20|"

Within:

PCRE:

Special Options:

  • fast_pattern

source