""ET CURRENT_EVENTS Suspicious BITS EXE DL From Dotted Quad""

SID: 2022858

Revision: 4

Class Type: misc-activity

Metadata: created_at 2016_06_03, updated_at 2019_09_19

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "User-Agent|3a 20|Microsoft BITS/"

  • Value: ".exe"

  • Value: !".gvt1.com/"

  • Value: !"download.windowsupdate.com"

  • Value: !"download.adobe.com"

Within:

PCRE: "/Host\x3a\x20\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}(?:\x3a\d{1,5})?\r\n/H"

Special Options:

  • http_header

  • http_uri

  • nocase

  • http_uri

  • http_header

  • http_header

source