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 APT27 - Emissary Panda Activity
Detects the execution of DLL side-loading malware used by threat group Emissary Panda aka APT27
Emerging test process_creation windows Sysmon · WinEventLog Security - criticalFlorian Roth (Nextron Systems) 2018-09-03 2023-03-09 9aa01d62-7667-4d3b-acb8-8cb5103e2014
3 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 Aruba Network Service Potential DLL Sideloading
Detects potential DLL sideloading activity via the Aruba Networks Virtual Intranet Access "arubanets (...)
Generic test image_load windows Sysmon - highNasreddine Bencherchali (Nextron Systems) 2023-01-22 2023-03-15 90ae0469-0cee-4509-b67f-e5efcef040f7
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 Base64 Encoded PowerShell Command Detected
Detects usage of the "FromBase64String" function in the commandline which is used to decode a base64 (...)
Generic test process_creation windows Sysmon · WinEventLog Security - highFlorian Roth (Nextron Systems) 2020-01-29 2023-01-26 e32d4572-9826-4738-b651-95fa63747e8a
1 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 Certificate Exported Via Certutil.EXE
Detects the execution of the certutil with the "exportPFX" flag which allows the utility to export certificates.
Generic test process_creation windows Sysmon · WinEventLog Security - mediumFlorian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.community, Nasreddine Bencherchali (Nextron Systems) 2023-02-15 2024-03-05 3ffd6f51-e6c1-47b7-94b4-c1e61d4117c5
1 Splunk
CertUtil With Decode Argument
The following analytic detects the use of CertUtil.exe with the 'decode' argument, which may indicate an attempt to decode a previously encoded file, potentially containing malicious payloads. (...)
Generic stable process_creation windows Sysmon · WinEventLog Security · CrowdStrike - mediumMichael Haag, Splunk 2021-03-25 2026-10-02 bfe94226-8c10-11eb-a4b3-acde48001122
5 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 - 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 - Lumma Stealer Activity
This analytic detects Lumma Stealer activity using Cisco Secure Firewall Intrusion Events. (...)
Generic stable firewall - Cisco Secure Firewall · Cisco - mediumNasreddine Bencherchali, Splunk, Talos NTDR 2025-04-16 2026-05-13 96bce783-c22e-4e48-8cf1-3eb2794c5083
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 - 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
- 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 ConvertTo-SecureString Cmdlet Usage Via CommandLine
Detects usage of the "ConvertTo-SecureString" cmdlet via the commandline. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - mediumTeymur Kheirkhabarov (idea), Vasiliy Burov (rule), oscd.community, Tim Shelton 2020-10-11 2023-02-01 74403157-20f5-415d-89a7-c505779585cf
2 Creation Of Non-Existent System DLL
Detects creation of specific system DLL files that are usually not present on the system (or at least not in system directories) but may be loaded by legitimate processes. (...)
Generic test file_event windows Sysmon mediumNasreddine Bencherchali (Nextron Systems), fornotes 2022-12-01 2026-01-24 df6ecb8b-7822-4f4b-b412-08f524b4576c
13 Creation of WerFault.exe/Wer.dll in Unusual Folder
Detects the creation of a file named "WerFault.exe" or "wer.dll" in an uncommon folder, which could be a sign of WerFault DLL hijacking.
Generic test file_event windows Sysmon - mediumfrack113 2022-05-09 2026-05-18 28a452f3-786c-4fd8-b8f2-bddbe9d616d1
1 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 Decode Base64 Encoded Text
Detects usage of base64 utility to decode arbitrary base64-encoded text
Generic test process_creation linux Sysmon - lowDaniil Yugoslavskiy, oscd.community 2020-10-19 2021-11-27 e2072cab-8c9a-459b-b63c-40ae79e27031
1 Decode Base64 Encoded Text -MacOs
Detects usage of base64 utility to decode arbitrary base64-encoded text
Generic test process_creation macos - - lowDaniil Yugoslavskiy, oscd.community 2020-10-19 2022-11-26 719c22d7-c11a-4f2c-93a6-2cfdd5412f68
1 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 DHCP Callout DLL Installation
Detects the installation of a Callout DLL via CalloutDlls and CalloutEnabled parameter in Registry, (...)
Generic test registry_set windows Sysmon · WinEventLog Security - highDimitrios Slamaris 2017-05-15 2023-08-17 9d3436ef-9476-4c43-acca-90ce06bdf33a
3 DHCP Server Error Failed Loading the CallOut DLL
This rule detects a DHCP server error in which a specified Callout DLL (in registry) could not be lo (...)
Generic test - windows WinEventLog System - highDimitrios Slamaris, @atc_project (fix) 2017-05-15 2022-12-25 75edd3fd-7146-48e5-9848-3013d7f0282c
3 DHCP Server Loaded the CallOut DLL
This rule detects a DHCP server in which a specified Callout DLL (in registry) was loaded
Generic test - windows WinEventLog System - highDimitrios Slamaris 2017-05-15 2022-12-25 13fc89a9-971e-4ca6-b9dc-aa53a445bf40
3 Diamond Sleet APT DLL Sideloading Indicators
Detects DLL sideloading activity seen used by Diamond Sleet APT
Emerging test image_load windows Sysmon highNasreddine Bencherchali (Nextron Systems) 2023-10-24 — d1b65d98-37d7-4ff6-b139-2d87c1af3042
1 DLL Names Used By SVR For GraphicalProton Backdoor
Hunts known SVR-specific DLL names.
Emerging test image_load windows Sysmon - mediumCISA 2023-12-18 — e64c8ef3-9f98-40c8-b71e-96110991cb4c
1 DLL Search Order Hijackig Via Additional Space in Path
Detects when an attacker create a similar folder structure to windows system folders such as (Window (...)
Generic test file_event windows Sysmon - highfrack113, Nasreddine Bencherchali (Nextron Systems) 2022-07-30 — b6f91281-20aa-446a-b986-38a92813a18f
2 DLL Sideloading by VMware Xfer Utility
Detects execution of VMware Xfer utility (VMwareXferlogs.exe) from the non-default directory which m (...)
Generic test process_creation windows Sysmon · WinEventLog Security - highNasreddine Bencherchali (Nextron Systems) 2022-08-02 — ebea773c-a8f1-42ad-a856-00cb221966e8
1 DLL Sideloading Of ShellChromeAPI.DLL
Detects processes loading the non-existent DLL "ShellChromeAPI". (...)
Generic test image_load windows Sysmon - highNasreddine Bencherchali (Nextron Systems) 2022-12-01 — ee4c5d06-3abc-48cc-8885-77f1c20f4451
2 DNS Server Error Failed Loading the ServerLevelPluginDLL
Detects a DNS server error in which a specified plugin DLL (in registry) could not be loaded
Generic test - windows DNS Server - highFlorian Roth (Nextron Systems) 2017-05-08 2023-02-05 cbe51394-cd93-4473-b555-edf0144952d9
3 DNS-over-HTTPS Enabled by Registry
Detects when a user enables DNS-over-HTTPS. (...)
Generic test registry_set windows Sysmon · WinEventLog Security - mediumAustin Songer 2021-07-22 2023-08-17 04b45a8a-d11d-49e4-9acc-4a1b524407a5
4 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