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« Timestomping using Touch Command UAC Bypass Attempt via Privileged IFileOperation COM Interface »

UAC Bypass Attempt via Elevated COM Internet Explorer Add-On Installeredit

Identifies User Account Control (UAC) bypass attempts by abusing an elevated COM Interface to launch a malicious program. Attackers may attempt to bypass UAC to stealthily execute code with elevated permissions.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*
  • logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Privilege Escalation

Version: 101 (version history)

Added (Elastic Stack release): 7.11.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guideedit












Rule queryedit








process where event.type == "start" and process.executable :
"C:\\*\\AppData\\*\\Temp\\IDC*.tmp\\*.exe" and process.parent.name :
"ieinstal.exe" and process.parent.args : "-Embedding" /* uncomment
once in winlogbeat */ /* and not (process.code_signature.subject_name
== "Microsoft Corporation" and process.code_signature.trusted == true)
*/











Threat mappingedit




Framework: MITRE ATT&CKTM














Rule version historyedit










Version 101 (8.5.0 release)








    

  • 

    Updated query, changed from:
    

    

    

    process where event.type in ("start", "process_started") and
process.executable : "C:\\*\\AppData\\*\\Temp\\IDC*.tmp\\*.exe" and
process.parent.name : "ieinstal.exe" and process.parent.args :
"-Embedding" /* uncomment once in winlogbeat */ /* and not
(process.code_signature.subject_name == "Microsoft Corporation" and
process.code_signature.trusted == true) */
    

    

    • 









Version 7 (8.4.0 release)








    

  • 
Formatting only

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Version 5 (8.2.0 release)








    

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Formatting only

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Version 4 (7.15.0 release)








    

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Formatting only

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Version 3 (7.12.0 release)








    

  • 

    Updated query, changed from:
    

    

    

    process where event.type in ("start", "process_started", "info") and
wildcard(process.executable,
"C:\\*\\AppData\\*\\Temp\\IDC*.tmp\\*.exe") and process.parent.name
== "ieinstal.exe" and process.parent.args == "-Embedding" /*
uncomment once in winlogbeat */ /* and not
(process.code_signature.subject_name == "Microsoft Corporation" and
process.code_signature.trusted == true) */
    

    

    • 









Version 2 (7.11.2 release)








    

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Formatting only

    • 


















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