Detection rules › Sigma

Remote Access Tool - ScreenConnect Installation Execution

Severity
medium
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects ScreenConnect program starts that establish a remote access to a system.

MITRE ATT&CK coverage

TacticTechniques
Initial AccessT1133 External Remote Services
PersistenceT1133 External Remote Services

Event coverage

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

Stages and Predicates

Stage 1: selection

CommandLine|contains: '&c='
CommandLine|contains: '&k='
CommandLine|contains: '&p='
CommandLine|contains: 'e=Access&'
CommandLine|contains: 'y=Guest&'

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
  • &c=
  • &k=
  • &p=
  • e=Access&
  • y=Guest&