Detection rules › Sigma

Remote Access Tool - ScreenConnect Installation Execution

Status
test
Severity
medium
Log source
category process_creation, product windows
Author
Florian Roth (Nextron Systems)
Source
github.com/SigmaHQ/sigma

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

Known false positives

  • Legitimate use by administrative staff

MITRE ATT&CK coverage

TacticTechniques
Initial Access
Persistence

Telemetry coverage

Rule body

title: Remote Access Tool - ScreenConnect Installation Execution
id: 75bfe6e6-cd8e-429e-91d3-03921e1d7962
status: test
description: Detects ScreenConnect program starts that establish a remote access to a system.
references:
    - https://www.anomali.com/blog/probable-iranian-cyber-actors-static-kitten-conducting-cyberespionage-campaign-targeting-uae-and-kuwait-government-agencies
author: Florian Roth (Nextron Systems)
date: 2021-02-11
modified: 2024-02-26
tags:
    - attack.persistence
    - attack.initial-access
    - attack.t1133
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'e=Access&'
            - 'y=Guest&'
            - '&p='
            - '&c='
            - '&k='
    condition: selection
falsepositives:
    - Legitimate use by administrative staff
level: medium

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

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

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
CommandLinematch
  • &c=
  • &k=
  • &p=
  • e=Access&
  • y=Guest&
field:"CommandLine" kind:match