Detection rules › Sigma

Tap Installer Execution

Severity
medium
Author
Daniil Yugoslavskiy, Ian Davis, oscd.community
Source
upstream

Well-known TAP software installation. Possible preparation for data exfiltration using tunneling techniques

MITRE ATT&CK coverage

TacticTechniques
ExfiltrationT1048 Exfiltration Over Alternative Protocol

Event coverage

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

Stages and Predicates

Stage 1: selection

Image|endswith: '\tapinstall.exe'

Stage 2: not 1 of filter_optional_*

or:
Image|contains: ':\Program Files (x86)\Avast Software\SecureLine VPN\'
Image|contains: ':\Program Files (x86)\Proton Technologies\ProtonVPNTap\installer\'
Image|contains: ':\Program Files\Avast Software\SecureLine VPN\'
Image|contains: ':\Program Files\OpenVPN Connect\drivers\tap\'

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
Imageends_with
  • \tapinstall.exe
Imagematch
  • :\Program Files (x86)\Avast Software\SecureLine VPN\
  • :\Program Files (x86)\Proton Technologies\ProtonVPNTap\installer\
  • :\Program Files\Avast Software\SecureLine VPN\
  • :\Program Files\OpenVPN Connect\drivers\tap\