Suspicious Child Process of Adobe Acrobat Reader Update Service

Elastic Stack Serverless Security

Detects attempts to exploit privilege escalation vulnerabilities related to the Adobe Acrobat Reader PrivilegedHelperTool responsible for installing updates. For more information, refer to CVE-2020-9615, CVE-2020-9614 and CVE-2020-9613 and verify that the impacted system is patched.

Rule type: query

Rule indices:

auditbeat-*
logs-endpoint.events.*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://rekken.github.io/2020/05/14/Security-Flaws-in-Adobe-Acrobat-Reader-Allow-Malicious-Program-to-Gain-Root-on-macOS-Silently/

Tags:

Elastic
Host
macOS
Threat Detection
Privilege Escalation
CVE-2020-9615
CVE-2020-9614
CVE-2020-9613

Version: 100

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

		event.category:process and event.type:(start or process_started) and
  process.parent.name:com.adobe.ARMDC.SMJobBlessHelper and
  user.name:root and
  not process.executable: (/Library/PrivilegedHelperTools/com.adobe.ARMDC.SMJobBlessHelper or
                           /usr/bin/codesign or
                           /private/var/folders/zz/*/T/download/ARMDCHammer or
                           /usr/sbin/pkgutil or
                           /usr/bin/shasum or
                           /usr/bin/perl* or
                           /usr/sbin/spctl or
                           /usr/sbin/installer or
                           /usr/bin/csrutil)

	

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/