PUA - NirCmd Execution As LOCAL SYSTEM

testhigh
log source: windows · process_creationauthor Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)date 2022-01-24
01

description

What this is, in brief.

Detects the use of NirCmd tool for command execution as SYSTEM user

02

tags

attack.executionattack.t1569.002attack.s0029
03

rule source (YAML)

title: PUA - NirCmd Execution As LOCAL SYSTEM
id: d9047477-0359-48c9-b8c7-792cedcdc9c4
status: test
description: Detects the use of NirCmd tool for command execution as SYSTEM user
references:
    - https://www.nirsoft.net/utils/nircmd.html
    - https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/
    - https://www.nirsoft.net/utils/nircmd2.html#using
author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
date: 2022-01-24
modified: 2023-02-13
tags:
    - attack.execution
    - attack.t1569.002
    - attack.s0029
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains: ' runassystem '
    condition: selection
falsepositives:
    - Legitimate use by administrators
level: high
04

detects techniques (1)

ATT&CK techniques this enables or maps to.

05

software named (1)

Malware and tools associated with this.

06

references

External citations — patches, advisories, analysis.