Detected Windows Software Discovery

Status: test
Severity: medium
Log source: category process_creation, product windows
Author: Nikita Nazarov, oscd.community
Source: github.com/SigmaHQ/sigma

Adversaries may attempt to enumerate software for a variety of reasons, such as figuring out what security measures are present or if the compromised system has a version of software that is vulnerable.

Known false positives

Legitimate administration activities

MITRE ATT&CK coverage

Tactic	Techniques
Discovery	`T1518` Software Discovery

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation
Security-Auditing	Event ID 4688: A new process has been created.

Rule body

title: Detected Windows Software Discovery
id: e13f668e-7f95-443d-98d2-1816a7648a7b
related:
    - id: 2650dd1a-eb2a-412d-ac36-83f06c4f2282
      type: derived
status: test
description: Adversaries may attempt to enumerate software for a variety of reasons, such as figuring out what security measures are present or if the compromised system has a version of software that is vulnerable.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518/T1518.md
    - https://github.com/harleyQu1nn/AggressorScripts # AVQuery.cna
author: Nikita Nazarov, oscd.community
date: 2020-10-16
modified: 2022-10-09
tags:
    - attack.discovery
    - attack.t1518
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\reg.exe'    # Example: reg query "HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer" /v svcVersion
        CommandLine|contains|all:
            - 'query'
            - '\software\'
            - '/v'
            - 'svcversion'
    condition: selection
falsepositives:
    - Legitimate administration activities
level: medium

Stages and Predicates

Stage 0: `condition`

selection

Stage 1: `selection`

selection:
    Image|endswith: '\reg.exe'
    CommandLine|contains|all:
        - 'query'
        - '\software\'
        - '/v'
        - 'svcversion'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`CommandLine`	match	`/v` corpus 5 (sigma 4, kusto 1) `\software\` corpus 2 (sigma 2) `query` corpus 8 (sigma 7, splunk 1) `svcversion`	`field:"CommandLine" kind:match`
`Image`	ends_with	`\reg.exe` corpus 58 (sigma 58)	`field:"Image" kind:ends_with value:"\reg.exe"`