""ET USER_AGENTS Kimsuky CnC Checkin User-Agent""

SID: 2046893

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_07_25, deployment Perimeter, confidence High, signature_severity Major, updated_at 2023_07_25

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "User-Agent|3a 20|Mozilla|2f|5|2e|0|20 28|Windows|20|NT|20|10|2e|x|3b 20|Win64|3b 20|x64|29 20|AppleWebKit|2f|537|2e|36|20 28|KHTML|2c 20|like|20|Gecko|29 20|Chremo|2f|87|2e|0|2e|4280|2e|141|20|Safari|2f|537|2e|36|20|Edgo|2f|87|2e|0|2e|664|2e|75|0d 0a|"

Within:

PCRE:

Special Options:

• http_header

source