AppLocker Application Would Have Been Blocked
Detects when AppLocker "Audit only" enforcement mode reports that an Application, DLL, Script, MSI, or Packaged-App would have been blocked if AppLocker "Enforce rules" enforcement mode was enabled.
Generic experimental - windows AppLocker - mediumheyyanu 2026-03-26 — 557e3bd3-7f21-495d-8d50-7c8bdfb8041c
4 AppLocker Prevented Application or Script from Running
Detects when AppLocker prevents the execution of an Application, DLL, Script, MSI, or Packaged-App from running.
Generic test - windows AppLocker - mediumPushkarev Dmitry 2020-06-28 2025-12-03 401e5d00-b944-11ea-8f9a-00163ecd60ae
3 AppX Package Installation Attempts Via AppInstaller.EXE
Detects DNS queries made by "AppInstaller.EXE". (...)
Generic test dns windows Sysmon - mediumfrack113 2021-11-24 2023-11-09 7cff77e1-9663-46a3-8260-17f2e1aa9d0a
2 Arbitrary File Download Via GfxDownloadWrapper.EXE
Detects execution of GfxDownloadWrapper.exe with a URL as an argument to download file.
Generic test process_creation windows Sysmon · WinEventLog Security - mediumVictor Sergeev, oscd.community 2020-10-09 2023-10-18 eee00933-a761-4cd0-be70-c42fe91731e7
1 Arbitrary Shell Command Execution Via Settingcontent-Ms
The .SettingContent-ms file type was introduced in Windows 10 and allows a user to create "shortcuts" to various Windows 10 setting pages. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - mediumSreeman 2020-03-13 2022-04-14 24de4f3b-804c-4165-b442-5a06a2302c7e
1 Axios NPM Compromise File Creation Indicators - Linux
Detects file creation events linked to the Axios NPM supply chain compromise. (...)
Emerging experimental file_event linux Sysmon - highSwachchhanda Shrawan Poudel (Nextron Systems) 2026-04-01 — b7cb840c-11f6-47f7-b3ef-5524739c9077
5 Axios NPM Compromise File Creation Indicators - MacOS
Detects file creation events linked to the Axios NPM supply chain compromise on macOS devices. (...)
Emerging experimental file_event macos - - highSwachchhanda Shrawan Poudel (Nextron Systems) 2026-04-01 — 2db0458c-05c9-4069-a26f-77becd9c8c13
5 Axios NPM Compromise Indicators - Linux
Detects the Linux-specific execution chain of the plain-crypto-js malicious npm dependency by Axios NPM package, including payload download via curl and detached execution using nohup and python3. (...)
Emerging experimental process_creation linux Sysmon - highSwachchhanda Shrawan Poudel (Nextron Systems) 2026-04-01 — 0a23a62d-c5b3-468b-a072-25064a9a8c87
5 Axios NPM Compromise Indicators - macOS
Detects the macOS-specific execution chain of the plain-crypto-js malicious npm dependency in Axios NPM Package, including AppleScript execution via osascript, payload download, permission modification, execution, and cleanup.
Emerging experimental process_creation macos - - highSwachchhanda Shrawan Poudel (Nextron Systems) 2026-04-01 — a09ee860-31b3-4586-8a68-0ebd74ce0e5f
5 Axios NPM Compromise Indicators - Windows
Detects the specific Windows execution chain and process tree associated with the Axios NPM supply chain compromise. (...)
Emerging experimental process_creation windows Sysmon · WinEventLog Security - highSwachchhanda Shrawan Poudel (Nextron Systems) 2026-04-01 — f6c27ecc-d890-4452-80e6-2e274a10e097
5 Splunk
Batch File Write to System32
The following analytic detects the creation of a batch file (.bat) within the Windows system directory tree, specifically in the System32 or SysWOW64 folders. (...)
Anomaly stable file_event windows Sysmon - mediumSteven Dick, Michael Haag, Rico Valdez, Splunk 2020-04-29 2026-07-02 503d17cb-9eab-4cf8-a20e-01d5c6987ae3
- Splunk
BITSAdmin Download File
The following analytic detects the use of `bitsadmin.exe` with the `transfer` parameter to download a remote object. (...)
Generic stable process_creation windows Sysmon · WinEventLog Security · CrowdStrike - mediumMichael Haag, Sittikorn S 2021-03-30 2026-10-02 80630ff4-8e4c-11eb-aab5-acde48001122
5 Browser Execution In Headless Mode
Detects execution of Chromium based browser in headless mode
Generic test process_creation windows Sysmon · WinEventLog Security - lowNasreddine Bencherchali (Nextron Systems) 2023-09-12 — ef9dcfed-690c-4c5d-a9d1-482cd422225c
2 Splunk
Cisco Isovalent - Curl Execution With Insecure Flags
The following analytic detects the execution of curl commands with insecure flags within the Cisco Isovalent environment. (...)
Anomaly stable process_creation - Cisco - mediumBhavin Patel, Splunk 2026-01-05 2026-10-02 c16c4899-d3f7-461b-92c2-cc0ef5758855
3 Splunk
Cisco NVM - Susp Script From Archive Triggering Network Activity
This analytic detects script execution (`wscript.exe` or `cscript.exe`) triggered from compressed fi (...)
Anomaly stable network_connection - Cisco NVM · Cisco - mediumNasreddine Bencherchali, Splunk 2025-07-01 2026-09-22 8b07c2c9-0cde-4c44-9fa6-59dcf2b25777
1 Splunk
Cisco NVM - Suspicious File Download via Headless Browser
This analytic identifies the use of Chromium-based browsers (like Microsoft Edge) running in headless mode with the `--dump-dom` argument. (...)
Generic stable network_connection - Cisco NVM · Cisco - mediumNasreddine Bencherchali, Splunk 2025-07-01 2026-09-22 cd0e816f-f67d-4dbe-a153-480b546e867e
4 Splunk
Cisco NVM - Webserver Download From File Sharing Website
This analytic detects unexpected outbound network connections initiated by known webserver processes such as `httpd.exe`, `nginx.exe`, or `tomcat.exe` to common file sharing or public content hosting services like GitHub, Discord CDN, Transfer.sh, or Pastebin. (...)
Generic stable network_connection - Cisco NVM · Cisco - mediumNasreddine Bencherchali, Splunk 2025-07-01 2026-09-22 1984f997-3b49-4d4b-a7e9-dc5dbf88370e
3 Splunk
Cisco Secure Firewall - Communication Over Suspicious Ports
The following analytic detects potential reverse shell activity by identifying connections involving ports commonly associated with remote access tools, shell listeners, or tunneling utilities. (...)
Anomaly stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-03 2026-05-13 d85c05c8-42c0-4e4a-87e7-4e1bb3e844e3
1 Splunk
Cisco Secure Firewall - Connection to File Sharing Domain
The following analytic detects outbound connections to commonly abused file sharing and pastebin-style hosting domains. (...)
Anomaly stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-03 2026-05-13 f7e5e792-d907-46c1-a58e-4ff974dc462a
1 Splunk
Cisco Secure Firewall - File Download Over Uncommon Port
The following analytic detects file transfers flagged as malware that occurred over non-standard ports (other than 80 and 443). (...)
Anomaly stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-09 2026-09-22 f26445a8-a6a2-4855-bec0-0c39e52e5b8f
1 Splunk
Cisco Secure Firewall - High EVE Threat Confidence
The following analytic detects connections with a high Encrypted Visibility Engine (EVE) threat confidence score, indicating potentially malicious behavior within encrypted traffic. (...)
Anomaly stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-03 2026-05-13 8c15183e-2e70-4db4-86c3-88f8d9129b66
1 Splunk
Cisco Secure Firewall - Malware File Downloaded
The following analytic detects file downloads that were classified as malware by Cisco Secure Firewall Threat Defense. (...)
Anomaly stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-09 2026-09-22 3cc93f52-5aa6-4b7f-83b9-3430b1436813
1 Splunk
Cisco Secure Firewall - Rare Snort Rule Triggered
This analytic identifies Snort signatures that have triggered only once in the past 7 days across all Cisco Secure Firewall IntrusionEvent logs. (...)
Hunting stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-16 2026-05-13 e20313d2-7d63-4fcf-b2d9-d6e12c6c7bd7
1 Splunk
Cisco Secure Firewall - Repeated Malware Downloads
The following analytic detects repeated malware file downloads initiated by the same internal host (src) within a short time window. (...)
Anomaly stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-09 2026-09-22 aeff2bb5-3483-48d4-9be8-c8976194be1e
1 Splunk
Cisco Secure Firewall - Snort Rule Triggered Across Multiple Hosts
This analytic identifies Snort intrusion signatures that have been triggered by ten or more distinct internal IP addresses within a one-hour window. (...)
Anomaly stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-16 2026-05-13 a4c76d0a-56b6-44be-814b-939746c4d406
1 Splunk
Cisco Secure Firewall - Wget or Curl Download
The following analytic detects outbound connections initiated by command-line tools such as curl or wget. (...)
Anomaly stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk 2025-04-03 2026-05-13 173a1cb9-1814-4128-a9dc-f29dade89957
1 Cisco Stage Data
Various protocols maybe used to put data on the device for exfil or infil
Generic test authentication - Cisco AAA · Cisco - lowAustin Clark 2019-08-12 2023-01-04 5e51acb2-bcbe-435b-99c6-0e3cd5e2aa59
- CLR DLL Loaded Via Office Applications
Detects CLR DLL being loaded by an Office Product
Generic test image_load windows Sysmon - mediumAntonlovesdnb 2020-02-19 2023-03-29 d13c43f0-f66b-4279-8b2c-5912077c1780
1 Command Line Execution with Suspicious URL and AppData Strings
Detects a suspicious command line execution that includes an URL and AppData string in the command l (...)
Generic test process_creation windows Sysmon · WinEventLog Security - mediumFlorian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.community 2019-01-16 2021-11-27 1ac8666b-046f-4201-8aba-1951aaec03a3
2 Curl Download And Execute Combination
Adversaries can use curl to download payloads remotely and execute them. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - highSreeman, Nasreddine Bencherchali (Nextron Systems) 2020-01-13 2024-03-05 21dd6d38-2b18-4453-9404-a0fe4a0cc288
1 Splunk
Curl Execution with Percent Encoded URL
The following analytic detects the execution of the curl utility where the command line includes percent-encoded characters and explicit file output options (such as -o or --output). (...)
Anomaly stable process_creation windows · linux CrowdStrike · Sysmon · WinEventLog Security - mediumNasreddine Bencherchali, Splunk 2026-03-03 2026-05-13 9a8d5516-4c5e-11ef-9d42-acde48001122
4 Curl Usage on Linux
Detects a curl process start on linux, which indicates a file download from a remote location or a s (...)
Generic test process_creation linux Sysmon - lowNasreddine Bencherchali (Nextron Systems) 2022-09-15 — ea34fb97-e2c4-4afb-810f-785e4459b194
1 Curl.EXE Execution
Detects a curl process start on Windows, which could indicates a file download from a remote locatio (...)
Hunting test process_creation windows Sysmon · WinEventLog Security - lowFlorian Roth (Nextron Systems) 2022-07-05 2023-02-21 bbeaed61-1990-4773-bf57-b81dbad7db2d
1 DarkGate - Autoit3.EXE File Creation By Uncommon Process
Detects the usage of curl.exe, KeyScramblerLogon, or other non-standard/suspicious processes used to create Autoit3.exe. (...)
Emerging test file_event windows Sysmon - mediumMicah Babinski 2023-10-15 — 1a433e1d-03d2-47a6-8063-ece992cf4e73
3 Splunk
Detect Certify Command Line Arguments
The following analytic detects the use of Certify or Certipy tools to enumerate Active Directory Certificate Services (AD CS) environments. (...)
Generic stable process_creation windows Sysmon · WinEventLog Security · CrowdStrike - mediumSteven Dick 2023-07-28 2026-05-13 e6d2dc61-a8b9-4b03-906c-da0ca75d71b8
3 Splunk
Detect Outlook exe writing a zip file
The following analytic identifies the execution of `outlook.exe` writing a `.zip` file to the disk. (...)
Anomaly stable process_creation windows Sysmon - mediumBhavin Patel, Splunk 2020-04-29 2026-05-13 a51bfe1a-94f0-4822-b1e4-16ae10145893
3 Disk Image Mounting Via Hdiutil - MacOS
Detects the execution of the hdiutil utility in order to mount disk images.
Generic test process_creation macos - - mediumOmar Khaled (@beacon_exe) 2024-08-10 — bf241472-f014-4f01-a869-96f99330ca8c
3 DotNET Assembly DLL Loaded Via Office Application
Detects any assembly DLL being loaded by an Office Product
Generic test image_load windows Sysmon - mediumAntonlovesdnb 2020-02-19 2023-03-29 ff0f2b05-09db-4095-b96d-1b75ca24894a
1 Download File To Potentially Suspicious Directory Via Wget
Detects the use of wget to download content to a suspicious directory
Generic test process_creation linux Sysmon - mediumJoseliyo Sanchez, @Joseliyo_Jstnk 2023-06-02 — cf610c15-ed71-46e1-bdf8-2bd1a99de6c4
4 Splunk
Download Files Using Telegram
The following analytic detects suspicious file downloads by the Telegram application on a Windows system. (...)
Generic stable create_stream_hash windows Sysmon - mediumTeoderick Contreras, Splunk 2021-05-07 2026-05-13 58194e28-ae5e-11eb-8912-acde48001122
1 Download from Suspicious Dyndns Hosts
Detects download of certain file types from hosts with dynamic DNS names (selected list)
Generic test proxy - - - mediumFlorian Roth (Nextron Systems) 2017-11-08 2023-05-18 195c1119-ef07-4909-bb12-e66f5e07bf3c
1 Download From Suspicious TLD - Blacklist
Detects download of certain file types from hosts in suspicious TLDs
Generic test proxy - - - lowFlorian Roth (Nextron Systems) 2017-11-07 2023-05-18 00d0b5ab-1f55-4120-8e83-487c0a7baf19
4 Download From Suspicious TLD - Whitelist
Detects executable downloads from suspicious remote systems
Generic test proxy - - - lowFlorian Roth (Nextron Systems) 2017-03-13 2023-05-18 b5de2919-b74a-4805-91a7-5049accbaefe
1 Splunk
Drop IcedID License dat
The following analytic detects the dropping of a suspicious file named "license.dat" in %appdata% or %programdata%. (...)
Hunting stable file_event windows Sysmon - mediumTeoderick Contreras, Splunk 2021-08-05 2026-05-13 b7a045fc-f14a-11eb-8e79-acde48001122
1 Droppers Exploiting CVE-2017-11882
Detects exploits that use CVE-2017-11882 to start EQNEDT32.EXE and other sub processes like mshta.ex (...)
Emerging stable process_creation windows Sysmon · WinEventLog Security criticalFlorian Roth (Nextron Systems) 2017-11-23 2021-11-27 678eb5f4-8597-4be6-8be7-905e4234b53a
3 Splunk
Email Attachments With Lots Of Spaces
The following analytic detects email attachments with an unusually high number of spaces in their file names, which is a common tactic used by attackers to obfuscate file extensions. (...)
Anomaly experimental email - - - mediumDavid Dorsey, Splunk 2020-04-29 2026-05-13 56e877a6-1455-4479-ada6-0550dc1e22f8
- Executable from Webdav
Detects executable access via webdav6. (...)
Generic test - - HTTP · Zeek - mediumSOC Prime, Adam Swan 2020-05-01 2021-11-27 aac2fd97-bcba-491b-ad66-a6edf89c71bf
2 Exploit for CVE-2017-0261
Detects Winword starting uncommon sub process FLTLDR.exe as used in exploits for CVE-2017-0261 and C (...)
Emerging test process_creation windows Sysmon · WinEventLog Security mediumFlorian Roth (Nextron Systems) 2018-02-22 2021-11-27 864403a1-36c9-40a2-a982-4c9a45f7d833
1 Exploit for CVE-2017-8759
Detects Winword starting uncommon sub process csc.exe as used in exploits for CVE-2017-8759
Emerging test process_creation windows Sysmon · WinEventLog Security criticalFlorian Roth (Nextron Systems) 2017-09-15 2021-11-27 fdd84c68-a1f6-47c9-9477-920584f94905
2 File Creation by Office Applications
This rule will monitor executable and script file creation by office applications. (...)
Unsupported experimental file_event windows Sysmon - highVadim Khrykov (ThreatIntel), Cyb3rEng (Rule) 2021-08-23 2022-06-02 8c6fd6fc-28fc-4597-a86a-fc1de20b039d
2