""ET TROJAN Likely Evil Request for uac.exe With Minimal Headers""

SID: 2032794

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 2021_04_21, deployment Perimeter, signature_severity Minor, updated_at 2021_04_21

Reference:

  • md5

  • fd66c2729efe28d54dbbdca62490b936

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/uac.exe"

  • Value: !"Referer|3a 20|"

  • Value: !"User-Agent|3a 20|"

Within:

PCRE: "/^Host\x3a\x20[^\r\n]+\r\n.{31}\r\n\r\n$/Hm"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_header

  • http_header

source