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Adversaries may abuse utilities that allow for command execution to bypass security restrictions that limit the use of command-line interpreters.
Passed 16 of 22 test cases with the skill, and 9 of 22 without it.
and 7 more in the full report
7 fixed9 passed either way6 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
Which Common Weakness Enumeration ID corresponds to the weakness underlying indirect command execution where security controls like cmd.exe restrictions are subverted?
| Checked | Without skill | With skill |
|---|---|---|
| The response identifies CWE-693 as the governing weakness classification. | Missed | Passed |
The instructions your model reads when the skill loads.
Adversaries may abuse utilities that allow for command execution to bypass security restrictions that limit the use of command-line interpreters. Various Windows utilities may be used to execute commands, possibly without invoking cmd. For example, Forfiles, the Program Compatibility Assistant (pcalua.exe), components of the Windows Subsystem for Linux (WSL), Scriptrunner.exe, as well as other utilities may invoke the execution of programs and commands from a Command and Scripting Interpreter, Run window, or via scripts. Adversaries may also abuse the ssh.exe binary to execute malicious commands via the ProxyCommand and LocalCommand options, which can be invoked via the -o flag or by modifying the SSH config file.
Adversaries may abuse these features for Defense Evasion, specifically to perform arbitrary execution while subverting detections and/or mitigation controls (such as Group Policy) that limit/prevent the usage of cmd or file extensions more commonly associated with malicious payloads.
Platforms: Windows
The following tests are from Atomic Red Team and provide actionable ways to test this technique:
The Program Compatibility Assistant (pcalua.exe) may invoke the execution of programs and commands from a Command-Line Interface. Reference Upon execution, calc.exe should open
Supported Platforms: windows
pcalua.exe -a #{process}
pcalua.exe -a #{payload_path}
test cases passed, vs 9 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.