""ET TROJAN Password Stealer - User-Agent (Ucheck)""

SID: 2009081

Revision: 6

Class Type: trojan-activity

Metadata: created_at 2010_07_30, updated_at 2017_10_30

Reference:

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| "

  • Value: "Opera/9.10"

  • Value: "|3b| Ucheck"

Within:

PCRE: "/User-Agent\x3a[^\n]+\x3b\sUcheck/Hmi"

Special Options:

  • http_header

  • http_header

  • http_header

  • fast_pattern

source