Potential Escalation via Vulnerable MSI Repair
editPotential Escalation via Vulnerable MSI Repair
editIdentifies when a browser process navigates to the Microsoft Help page followed by spawning an elevated process. This may indicate a successful exploitation for privilege escalation abusing a vulnerable Windows Installer repair setup.
Rule type: eql
Rule indices:
- winlogbeat-*
- endgame-*
- logs-endpoint.events.process-*
- logs-windows.sysmon_operational-*
- logs-sentinel_one_cloud_funnel.*
- logs-m365_defender.event-*
Severity: high
Risk score: 73
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Privilege Escalation
- Data Source: Elastic Endgame
- Data Source: Elastic Defend
- Data Source: Sysmon
- Data Source: SentinelOne
- Data Source: Microsoft Defender for Endpoint
Version: 101
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where event.type == "start" and host.os.type == "windows" and
user.domain : ("NT AUTHORITY", "AUTORITE NT", "AUTORIDADE NT") and
process.parent.name : ("chrome.exe", "msedge.exe", "brave.exe", "whale.exe", "browser.exe", "dragon.exe", "vivaldi.exe",
"opera.exe", "iexplore", "firefox.exe", "waterfox.exe", "iexplore.exe", "tor.exe", "safari.exe") and
process.parent.command_line : "*go.microsoft.com*"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
-
Technique:
- Name: Exploitation for Privilege Escalation
- ID: T1068
- Reference URL: https://attack.mitre.org/techniques/T1068/
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: System Binary Proxy Execution
- ID: T1218
- Reference URL: https://attack.mitre.org/techniques/T1218/
-
Sub-technique:
- Name: Msiexec
- ID: T1218.007
- Reference URL: https://attack.mitre.org/techniques/T1218/007/