Detection rules › Sigma

Query Usage To Exfil Data

Severity
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects usage of "query.exe" a system binary to exfil information such as "sessions" and "processes" for later use

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation
Security-Auditing4688A new process has been created.

Stages and Predicates

Stage 1: selection

or:
CommandLine|contains: 'process >'
CommandLine|contains: 'session >'
Image|endswith: ':\Windows\System32\query.exe'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
CommandLinematch
  • process >
  • session >
Imageends_with
  • :\Windows\System32\query.exe