bits_http_client_useragent_usage

rule bits_http_client_useragent_usage {
 meta:
    author = "Joseph Kamau"
    description = "This rule can be used to hunt for anomalous trafic initiated to external hosts in proxy logs  License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md."
    reference = "https://tdm.socprime.com/tdm/info/Z15hUenKYohQ"
    version = "0.01"
    created = "2021-03-09"
    product = "proxy"
    mitre = "defense_evasion, t1197"

  events:
re.regex($selection.principal.application, `Microsoft BITS.*`)

  condition:
    $selection
}