Remote Access Tool Services Have Been Installed - Security

Severity: medium
Author: Connor Martin, Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects service installation of different remote access tools software. These software are often abused by threat actors to perform

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1569.002` System Services: Service Execution
Persistence	`T1543.003` Create or Modify System Process: Windows Service
Privilege Escalation	`T1543.003` Create or Modify System Process: Windows Service

Event coverage

Provider	Event ID	Title
Security-Auditing	4697	A service was installed in the system.

Stages and Predicates

Stage 1: `selection`

or:
ServiceName|contains: AmmyyAdmin
ServiceName|contains: AnyDesk
ServiceName|contains: Atera
ServiceName|contains: BASupportExpressSrvcUpdater
ServiceName|contains: 'BASupportExpressStandaloneService'
ServiceName|contains: GoToAssist
ServiceName|contains: GoToMyPC
ServiceName|contains: LMIGuardianSvc
ServiceName|contains: LogMeIn
ServiceName|contains: Parsec
ServiceName|contains: RManService
ServiceName|contains: RPCPerformanceService
ServiceName|contains: RPCService
ServiceName|contains: SSUService
ServiceName|contains: SplashtopRemoteService
ServiceName|contains: TeamViewer
ServiceName|contains: TightVNC
ServiceName|contains: Zoho
ServiceName|contains: chromoting
ServiceName|contains: jumpcloud
ServiceName|contains: monblanking
ServiceName|contains: vncserver

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
`ServiceName`	match	`AmmyyAdmin` corpus 2 (sigma 2) `AnyDesk` corpus 2 (sigma 2) `Atera` corpus 2 (sigma 2) `BASupportExpressSrvcUpdater` corpus 2 (sigma 2) `BASupportExpressStandaloneService` corpus 2 (sigma 2) `GoToAssist` corpus 2 (sigma 2) `GoToMyPC` corpus 2 (sigma 2) `LMIGuardianSvc` corpus 2 (sigma 2) `LogMeIn` corpus 2 (sigma 2) `Parsec` corpus 2 (sigma 2) `RManService` corpus 2 (sigma 2) `RPCPerformanceService` corpus 2 (sigma 2) `RPCService` corpus 2 (sigma 2) `SSUService` corpus 2 (sigma 2) `SplashtopRemoteService` corpus 2 (sigma 2) `TeamViewer` corpus 2 (sigma 2) `TightVNC` corpus 2 (sigma 2) `Zoho` corpus 2 (sigma 2) `chromoting` corpus 2 (sigma 2) `jumpcloud` corpus 2 (sigma 2) `monblanking` corpus 2 (sigma 2) `vncserver` corpus 2 (sigma 2)

Neighbors

Broader alternatives (more inclusive than this rule)

These rules match a superset of what this rule catches. They cover the same events plus more. Use them if you want wider coverage and can absorb more false positives.

CobaltStrike Service Installations - Security [sigma] (drops 1 filter this rule applies) (first-stage match only; downstream stages may differ)
Invoke-Obfuscation Obfuscated IEX Invocation - Security [sigma] (drops 1 filter this rule applies) (first-stage match only; downstream stages may differ)
Meterpreter or Cobalt Strike Getsystem Service Installation - Security [sigma] (drops 1 filter this rule applies) (first-stage match only; downstream stages may differ)
Service Installed By Unusual Client - Security [sigma] (drops 1 filter this rule applies) (first-stage match only; downstream stages may differ)