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Execution of File Written or Modified by PDF Readeredit
Identifies a suspicious file that was written by a PDF reader application and subsequently executed. These processes are often launched via exploitation of PDF applications.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
- winlogbeat-*
- logs-windows.*
Severity: high
Risk score: 21
Runs every: 60m
Searches indices from: now-120m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References: None
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Execution
Version: 4
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
sequence with maxspan=2h
[file where event.type != "deletion" and file.extension : "exe" and
(process.name : "AcroRd32.exe" or
process.name : "rdrcef.exe" or
process.name : "FoxitPhantomPDF.exe" or
process.name : "FoxitReader.exe") and
not (file.name : "FoxitPhantomPDF.exe" or
file.name : "FoxitPhantomPDFUpdater.exe" or
file.name : "FoxitReader.exe" or
file.name : "FoxitReaderUpdater.exe" or
file.name : "AcroRd32.exe" or
file.name : "rdrcef.exe")
] by host.id, file.path
[process where event.type in ("start", "process_started")] by host.id, process.executable
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Tactic:
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
-
Technique:
- Name: Phishing
- ID: T1566
- Reference URL: https://attack.mitre.org/techniques/T1566/
-
Sub-technique:
- Name: Spearphishing Attachment
- ID: T1566.001
- Reference URL: https://attack.mitre.org/techniques/T1566/001/
-
Sub-technique:
- Name: Spearphishing Link
- ID: T1566.002
- Reference URL: https://attack.mitre.org/techniques/T1566/002/