EXPLORE
← Back to Explore
T1203

Exploitation for Client Execution

Adversaries may exploit software vulnerabilities in client applications to execute code. Vulnerabilities can exist in software due to unsecure coding practices that can lead to unanticipated behavior. Adversaries can take advantage of certain vulnerabilities through targeted exploitation for the purpose of arbitrary code execution. Oftentimes the most valuable exploits to an offensive toolkit are those that can be used to obtain code execution on a remote system because they can be used to gain ...

LinuxmacOSWindows
81
Detections
4
Sources
42
Threat Actors

BY SOURCE

29elastic21sigma19sublime12splunk_escu

PROCEDURES (44)

General Monitoring10 detections

Auto-extracted: 10 detections for general monitoring

Attachment4 detections

Auto-extracted: 4 detections for attachment

Child Process3 detections

Auto-extracted: 3 detections for child process

Phish3 detections

Auto-extracted: 3 detections for phish

Network Connection Monitoring3 detections

Auto-extracted: 3 detections for network connection monitoring

Azure2 detections

Auto-extracted: 2 detections for azure

Download2 detections

Auto-extracted: 2 detections for download

Script Execution Monitoring2 detections

Auto-extracted: 2 detections for script execution monitoring

Aws2 detections

Auto-extracted: 2 detections for aws

Child Process2 detections

Auto-extracted: 2 detections for child process

Remote2 detections

Auto-extracted: 2 detections for remote

Service2 detections

Auto-extracted: 2 detections for service

Parent Process2 detections

Auto-extracted: 2 detections for parent process

Lateral1 detections

Auto-extracted: 1 detections for lateral

Suspicious1 detections

Auto-extracted: 1 detections for suspicious

Remote1 detections

Auto-extracted: 1 detections for remote

Email Security1 detections

Auto-extracted: 1 detections for email security

Command Line Monitoring1 detections

Auto-extracted: 1 detections for command line monitoring

Api1 detections

Auto-extracted: 1 detections for api

Office1 detections

Auto-extracted: 1 detections for office

Authentication Monitoring1 detections

Auto-extracted: 1 detections for authentication monitoring

Email1 detections

Auto-extracted: 1 detections for email

Remote1 detections

Auto-extracted: 1 detections for remote

Child Process1 detections

Auto-extracted: 1 detections for child process

Macro1 detections

Auto-extracted: 1 detections for macro

Office1 detections

Auto-extracted: 1 detections for office

Lateral1 detections

Auto-extracted: 1 detections for lateral

Email1 detections

Auto-extracted: 1 detections for email

Bypass1 detections

Auto-extracted: 1 detections for bypass

Attachment1 detections

Auto-extracted: 1 detections for attachment

Macro1 detections

Auto-extracted: 1 detections for macro

Download1 detections

Auto-extracted: 1 detections for download

Aws1 detections

Auto-extracted: 1 detections for aws

Suspicious1 detections

Auto-extracted: 1 detections for suspicious

Suspicious1 detections

Auto-extracted: 1 detections for suspicious

Child Process1 detections

Auto-extracted: 1 detections for child process

Api1 detections

Auto-extracted: 1 detections for api

Office1 detections

Auto-extracted: 1 detections for office

Bypass1 detections

Auto-extracted: 1 detections for bypass

Service1 detections

Auto-extracted: 1 detections for service

Inject1 detections

Auto-extracted: 1 detections for inject

Inject1 detections

Auto-extracted: 1 detections for inject

Process Creation Monitoring1 detections

Auto-extracted: 1 detections for process creation monitoring

Download1 detections

Auto-extracted: 1 detections for download

DETECTIONS (81)

Anomalous Windows Process Creation
elasticlow
Anthropic Magic String in HTML
sublimelow
Antivirus - APT Malware Signature
sigmacritical
Antivirus - Exploitation Framework Signature
sigmacritical
Antivirus - Remote Access Tools Signature
sigmacritical
Attachment: Archive containing HTML file with file scheme link
sublimehigh
Attachment: Archive contains DLL-loading macro
sublimehigh
Attachment: CVE-2021-40444 - MSHTML Remote Code Execution Vulnerability
sublimecritical
Attachment: CVE-2023-21716 - Microsoft Office Remote Code Execution Vulnerability
sublimehigh
Attachment: CVE-2025-24071 - Microsoft Windows File Explorer Spoofing Vulnerability
sublimecritical
Attachment: DOCX with malicious document template artifacts
sublimemedium
Attachment: LNK with embedded content
sublimehigh
Attachment: WinRAR CVE-2025-8088 exploitation
sublimehigh
Attachment: ZIP file with CVE-2026-0866 exploit
sublimemedium
Audit CVE Event
sigmacritical
Body: CVE-2026-42897 Exchange OWA stored XSS
sublimecritical
Callback Phishing via Signable E-Signature Request
sublimehigh
Callback phishing via SignFree e-signature request
sublimehigh
Callback phishing via Xodo Sign comment
sublimehigh
Cisco Secure Firewall - Binary File Type Download
splunk_escu
Cisco Secure Firewall - Blocked Connection
splunk_escu
Cisco Secure Firewall - Citrix NetScaler Memory Overread Attempt
splunk_escu
Cisco Secure Firewall - High Priority Intrusion Classification
splunk_escu
Cisco Secure Firewall - Malware File Downloaded
splunk_escu
Cisco Secure Firewall - Possibly Compromised Host
splunk_escu
Cisco Secure Firewall - Repeated Blocked Connections
splunk_escu
Cupsd or Foomatic-rip Shell Execution
elastichigh
CVE-2023-5631 - Roundcube Webmail XSS via crafted SVG
sublimecritical
Detect Windows DNS SIGRed via Splunk Stream
splunk_escu
Detect Windows DNS SIGRed via Zeek
splunk_escu
Dfsvc.EXE Initiated Network Connection Over Uncommon Port
sigmahigh
Dfsvc.EXE Network Connection To Non-Local IPs
sigmamedium
Download From Suspicious TLD - Blacklist
sigmalow
Download From Suspicious TLD - Whitelist
sigmalow
Execution of File Written or Modified by Microsoft Office
elastichigh
Exploit - Detected - Elastic Endgame
elastichigh
Exploit - Prevented - Elastic Endgame
elasticmedium
File Creation by Cups or Foomatic-rip Child
elasticmedium
Java Running with Remote Debugging
sigmamedium
Link: CVE-2024-21413 Microsoft Outlook Remote Code Execution Vulnerability
sublimecritical
Mass campaign: Cross Site Scripting (XSS) attempt
sublimemedium
Multiple DHCP Servers Responding to the Same Transaction
elastichigh
Network Connection by Cups or Foomatic-rip Child
elastichigh
Network Connection Initiated By Eqnedt32.EXE
sigmahigh
Office Application Initiated Network Connection To Non-Local IP
sigmamedium
OMIGOD SCX RunAsProvider ExecuteScript
sigmahigh
OMIGOD SCX RunAsProvider ExecuteShellCommand
sigmahigh
Open redirect: City of Calgary
sublimemedium
Outlook hyperlink bypass: left-to-right mark (LRM) in base HTML tag
sublimemedium
Potential CVE-2025-33053 Exploitation
elastichigh
Potential Foxmail Exploitation
elastichigh
Potential Git CVE-2025-48384 Exploitation
elastichigh
Potential Java Service Exploitation via Suspicious Child Process
elastichigh
Potential Notepad Markdown RCE Exploitation
elastichigh
Potential SAP NetWeaver Exploitation
elastichigh
Potential SAP NetWeaver WebShell Creation
elastichigh
Potential Shell via Wildcard Injection Detected
elasticmedium
Potentially Suspicious Child Process of KeyScrambler.exe
sigmamedium
Potentially Suspicious Child Process Of WinRAR.EXE
sigmamedium
Printer User (lp) Shell Execution
elastichigh
Segfault from Sensitive Process Detected
elasticmedium
Sunburst Correlation DLL and Network Event
splunk_escu
Suspicious ArcSOC.exe Child Process
sigmahigh
Suspicious Browser Child Process
elastichigh
Suspicious Browser Child Process - MacOS
sigmamedium
Suspicious Communication App Child Process
elasticmedium
Suspicious Download and Execute Pattern via Curl/Wget
sigmahigh
Suspicious Execution from Foomatic-rip or Cupsd Parent
elastichigh
Suspicious HWP Sub Processes
sigmahigh
Suspicious Invocation of Shell via Rsync
sigmahigh
Suspicious macOS MS Office Child Process
elasticmedium
Suspicious Microsoft Diagnostics Wizard Execution
elastichigh
Suspicious MS Office Child Process
elasticmedium
Suspicious PDF Reader Child Process
elasticlow
Suspicious Process Execution by Zoom
elastichigh
Suspicious Spool Service Child Process
sigmahigh
Suspicious Zoom Child Process
elasticmedium
Unusual Executable File Creation by a System Critical Process
elastichigh
Windows MSC EvilTwin Directory Path Manipulation
splunk_escu
Windows Remote Image Load
splunk_escu
WPS Office Exploitation via DLL Hijack
elastichigh