Detection rules › Sigma

Ngrok Usage with Remote Desktop Service

Severity
high
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects cases in which ngrok, a reverse proxy tool, forwards events to the local RDP port, which could be a sign of malicious behaviour

MITRE ATT&CK coverage

TacticTechniques
Command & ControlT1090 Proxy

Event coverage

ProviderEvent IDTitle
TerminalServices-LocalSessionManager21Remote Desktop Services: Session logon succeeded.

Stages and Predicates

Stage 1: selection

Address|contains: 16777216

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
Addressmatch
  • 16777216