Detection rules › Sigma

Potential RDP Session Hijacking Activity

Severity
medium
Author
@juju4
Source
upstream

Detects potential RDP Session Hijacking activity on Windows systems

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: all of selection_img

or:
Image|endswith: '\tscon.exe'
OriginalFileName: tscon.exe

Stage 2: all of selection_integrity

IntegrityLevel: [S-1-16-16384, System]

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
  • \tscon.exe corpus 2 (sigma 2)
IntegrityLeveleq
  • S-1-16-16384 corpus 21 (sigma 21)
  • System corpus 21 (sigma 21)
OriginalFileNameeq
  • tscon.exe