Connection Proxy

A Sigma rule for process creation on Linux, by Ömer Günal.

low 1 ATT&CK technique 1 everyday example trips it

What it looks for

its detection, as SigmaHQ writes it

detection:
  selection:
    CommandLine|contains:
      - 'http_proxy='
      - 'https_proxy='
  condition: selection

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Ömer Günal, under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.

Command lines that trip it

everyday examples from tldr-pages, CC BY 4.0, each read by CmdID

Build an image passing build-time variables on the page for docker-buildx-build

docker buildx build --build-arg HTTP_PROXY=http://proxy.example.com --build-arg VERSION=1.0 .Identify

ATT&CK

the techniques it is tagged with

T1090Proxy

Connection Proxy

What it looks for

Command lines that trip it

ATT&CK

Other rules for T1090 Proxy