Detection rules › Sigma
DNS hosts file accessed via network share
Detects scenarios where an attacker attempt read the Hosts file content via network share.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery | T1018 Remote System Discovery |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Security-Auditing | Event ID 5145 | A network share object was checked to see whether client can be granted desired access. |
Rule body yaml
title: DNS hosts file accessed via network share
description: Detects scenarios where an attacker attempt read the Hosts file content via network share.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0007-Discovery/T1018-Remote%20System%20Discovery
- https://www.picussecurity.com/resource/blog/how-to-beat-nefilim-ransomware-attacks
- https://github.com/login-securite/DonPAPI
tags:
- attack.discovery
- attack.t1018
author: mdecrevoisier
status: experimental
logsource:
product: windows
service: security
detection:
selection:
EventID: 5145
ShareName: '\\*\C$'
RelativeTargetName: 'Windows\System32\Drivers\etc\hosts'
condition: selection
falsepositives:
- None
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
EventID: 5145
ShareName: '\\*\C$'
RelativeTargetName: 'Windows\System32\Drivers\etc\hosts'
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.
| Field | Kind | Values |
|---|---|---|
RelativeTargetName | eq |
|
ShareName | wildcard |
|