Potential In-Memory Download And Compile Of Payloads

A Sigma rule for process creation on macOS, by Sohan G (D4rkCiph3r), Red Canary (idea).

medium 2 ATT&CK techniques

What it looks for

its detection, as SigmaHQ writes it

detection:
  selection:
    CommandLine|contains|all:
      - 'osacompile'
      - 'curl'
  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 Sohan G (D4rkCiph3r), Red Canary (idea), 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.

None of the everyday examples and documented commands on CmdID’s program pages trips it. To see whether a command line does, paste it into CmdID.

ATT&CK

the techniques it is tagged with

T1059.007Command and Scripting Interpreter: JavaScript

T1105Ingress Tool Transfer

Potential In-Memory Download And Compile Of Payloads

What it looks for

ATT&CK

Other rules for T1059.007 Command and Scripting Interpreter: JavaScript