Bpfdoor TCP Ports Redirect
All TCP traffic on particular port from attacker is routed to different port. (...)
Generic test process_creation linux Linux Auditd - mediumRafal Piasecki 2022-08-10 — 70b4156e-50fc-4523-aa50-c9dddf1993fc
2 Splunk
Cisco IOS XE Tunnel Interface Configuration
This analytic detects creation of a Cisco IOS-XE tunnel interface with tunnel source, tunnel destination, and an IP address in the 10.10.12.0 network. (...)
Anomaly stable network_device - Cisco IOS · Cisco - mediumNasreddine Bencherchali 2026-05-19 2026-05-20 8654314d-8e4d-4971-9f35-b9d477bf668e
2 Cloudflared Tunnel Connections Cleanup
Detects execution of the "cloudflared" tool with the tunnel "cleanup" flag in order to cleanup tunnel connections.
Generic test process_creation windows Sysmon · WinEventLog Security - mediumNasreddine Bencherchali (Nextron Systems) 2023-05-17 2023-12-21 7050bba1-1aed-454e-8f73-3f46f09ce56a
2 Cloudflared Tunnel Execution
Detects execution of the "cloudflared" tool to connect back to a tunnel. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - mediumJanantha Marasinghe, Nasreddine Bencherchali (Nextron Systems) 2023-05-17 2023-12-20 9a019ffc-3580-4c9d-8d87-079f7e8d3fd4
3 Communication To LocaltoNet Tunneling Service Initiated
Detects an executable initiating a network connection to "LocaltoNet" tunneling sub-domains. (...)
Generic test network_connection windows Sysmon - highAndreas Braathen (mnemonic.io) 2024-06-17 — 3ab65069-d82a-4d44-a759-466661a082d1
2 Communication To LocaltoNet Tunneling Service Initiated - Linux
Detects an executable initiating a network connection to "LocaltoNet" tunneling sub-domains. (...)
Generic test network_connection linux Sysmon - highAndreas Braathen (mnemonic.io) 2024-06-17 — c4568f5d-131f-4e78-83d4-45b2da0ec4f1
2 Communication To Ngrok Tunneling Service - Linux
Detects an executable accessing an ngrok tunneling endpoint, which could be a sign of forbidden exfi (...)
Generic test network_connection linux Sysmon - highFlorian Roth (Nextron Systems) 2022-11-03 — 19bf6fdb-7721-4f3d-867f-53467f6a5db6
2 Communication To Ngrok Tunneling Service Initiated
Detects an executable initiating a network connection to "ngrok" tunneling domains. (...)
Generic test network_connection windows Sysmon - highFlorian Roth (Nextron Systems) 2022-11-03 2024-02-02 1d08ac94-400d-4469-a82f-daee9a908849
2 Connection Proxy
Detects setting proxy configuration
Generic test process_creation linux Sysmon - lowÖmer Günal 2020-06-17 2022-10-05 72f4ab3f-787d-495d-a55d-68c2ff46cf4c
- Disable System Firewall
Detects disabling of system firewalls which could be used by adversaries to bypass controls that limit usage of the network.
Generic test service linux Linux Auditd - highPawel Mazur 2022-01-22 — 53059bc0-1472-438b-956a-7508a94a91f0
2 Disabling Security Tools
Detects disabling security tools
Generic test process_creation linux Sysmon - mediumÖmer Günal, Alejandro Ortuno, oscd.community 2020-06-17 2022-10-09 e3a8a052-111f-4606-9aee-f28ebeb76776
1 Disabling Security Tools - Builtin
Detects disabling security tools
Generic test - linux Syslog - mediumÖmer Günal, Alejandro Ortuno, oscd.community 2020-06-17 2022-11-26 49f5dfc1-f92e-4d34-96fa-feba3f6acf36
1 Splunk
ESXi Firewall Disabled
This detection identifies when the ESXi firewall is disabled or set to permissive mode, which can expose the host to unauthorized access and network-based attacks. (...)
Generic stable - esxi VMware ESXi · VMware - mediumRaven Tait, Splunk 2025-07-11 2026-05-13 e321804c-8eb5-42f2-a843-36b289a6c6b2
- Splunk
Firewall Allowed Program Enable
The following analytic detects the modification of a firewall rule to allow the execution of a specific application. (...)
Anomaly stable process_creation windows Sysmon · WinEventLog Security · CrowdStrike - mediumTeoderick Contreras, Splunk 2021-11-17 2026-06-08 9a8f63a8-43ac-11ec-904c-acde48001122
1 Flush Iptables Ufw Chain
Detect use of iptables to flush all firewall rules, tables and chains and allow all network traffic
Generic test process_creation linux Sysmon - mediumJoseliyo Sanchez, @Joseliyo_Jstnk 2023-01-18 — 3be619f4-d9ec-4ea8-a173-18fdd01996ab
3 HackTool - Htran/NATBypass Execution
Detects executable names or flags used by Htran or Htran-like tools (e.g. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - highFlorian Roth (Nextron Systems) 2022-12-27 2023-02-04 f5e3b62f-e577-4e59-931e-0a15b2b94e1e
2 Kalambur Backdoor Curl TOR SOCKS Proxy Execution
Detects the execution of the "curl.exe" command, referencing "SOCKS" and ".onion" domains, which could be indicative of Kalambur backdoor activity.
Emerging experimental process_creation windows Sysmon · WinEventLog Security - highArda Buyukkaya (EclecticIQ) 2025-02-11 — e99375eb-3ee0-407a-9f90-79569cc6a01c
1 Splunk
Linux Auditd Disable Or Modify System Firewall
The following analytic detects the suspicious disable or modify system firewall. (...)
Anomaly stable service linux Linux Auditd - mediumTeoderick Contreras, Splunk 2024-08-12 2026-05-13 07052556-d4b5-4bae-89aa-cbdc1bb11250
1 Splunk
Linux Iptables Firewall Modification
The following analytic detects suspicious command-line activity that modifies the iptables firewall settings on a Linux machine. (...)
Anomaly stable process_creation linux Sysmon - mediumTeoderick Contreras, Splunk 2022-04-07 2026-05-13 309d59dc-1e1b-49b2-9800-7cf18d12f7b7
2 Splunk
Linux Ngrok Reverse Proxy Usage
The following analytic detects the use of Ngrok on a Linux operating system. (...)
Anomaly stable process_creation linux Sysmon - mediumMichael Haag, Splunk 2023-01-12 2026-05-13 bc84d574-708c-467d-b78a-4c1e20171f97
2 Splunk
Linux Proxy Socks Curl
The following analytic detects the use of the `curl` command with proxy-related arguments such as `-x`, `socks`, `--preproxy`, and `--proxy`. (...)
Generic stable process_creation linux Sysmon - mediumMichael Haag, Splunk, 0xC0FFEEEE, Github Community 2022-07-29 2026-06-04 bd596c22-ad1e-44fc-b242-817253ce8b08
6 Splunk
Linux Stdout Redirection To Dev Null File
The following analytic detects command-line activities that redirect stdout or stderr to the /dev/null file. (...)
Anomaly stable process_creation linux Sysmon - mediumTeoderick Contreras, Splunk 2022-04-07 2026-05-13 de62b809-a04d-46b5-9a15-8298d330f0c8
2 Local Firewall Rules Enumeration Via NetFirewallRule Cmdlet
Detects execution of "Get-NetFirewallRule" or "Show-NetFirewallRule" to enumerate the local firewall rules on a host.
Hunting test ps_module windows PowerShell - lowChristopher Peacock @SecurePeacock, SCYTHE @scythe_io 2023-07-13 — ea207a23-b441-4a17-9f76-ad5be47d51d3
2 Malicious IP Address Sign-In Failure Rate
Indicates sign-in from a malicious IP address based on high failure rates.
Generic test - - Azure Risk Detection · Azure - highMark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' 2023-09-07 — a3f55ebd-0c01-4ed6-adc0-8fb76d8cd3cd
2 Malicious IP Address Sign-In Suspicious
Indicates sign-in from a malicious IP address known to be malicious at time of sign-in.
Generic test - - Azure Risk Detection · Azure - highMark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' 2023-09-07 — 36440e1c-5c22-467a-889b-593e66498472
2 Splunk
Microsoft Intune DeviceManagementConfigurationPolicies
Microsoft Intune device management configuration policies are a tool administrators can use to remotely manage policies and settings on intune managed devices. (...)
Hunting stable cloud_audit - Azure - mediumDean Luxton 2025-01-06 2026-05-13 3c49e5ed-625c-408c-a2c7-8e2b524efb2c
3 Modify System Firewall
Detects the removal of system firewall rules. (...)
Generic test process_creation linux Linux Auditd - mediumIAI 2023-03-06 2025-10-12 323ff3f5-0013-4847-bbd4-250b5edb62cc
3 New Netsh Helper DLL Registered From A Suspicious Location
Detects changes to the Netsh registry key to add a new DLL value that is located on a suspicious location. (...)
Generic test registry_set windows Sysmon · WinEventLog Security - highNasreddine Bencherchali (Nextron Systems) 2023-11-28 — e7b18879-676e-4a0e-ae18-27039185a8e7
2 New Port Forwarding Rule Added Via Netsh.EXE
Detects the execution of netsh commands that configure a new port forwarding (PortProxy) rule
Generic test process_creation windows Sysmon · WinEventLog Security - mediumFlorian Roth (Nextron Systems), omkar72, oscd.community, Swachchhanda Shrawan Poudel 2019-01-29 2023-09-01 322ed9ec-fcab-4f67-9a34-e7c6aef43614
3 New PortProxy Registry Entry Added
Detects the modification of the PortProxy registry key which is used for port forwarding.
Generic test registry_event windows Sysmon · WinEventLog Security - mediumAndreas Hunkeler (@Karneades) 2021-06-22 2024-03-25 a54f842a-3713-4b45-8c84-5f136fdebd3c
3 Splunk
Ngrok Reverse Proxy on Network
The following analytic detects DNS queries to common Ngrok domains, indicating potential use of the Ngrok reverse proxy tool. (...)
Anomaly stable dns windows Sysmon - mediumMichael Haag, Splunk 2022-11-16 2026-05-13 5790a766-53b8-40d3-a696-3547b978fcf0
1 Ngrok Usage with Remote Desktop Service
Detects cases in which ngrok, a reverse proxy tool, forwards events to the local RDP port, which cou (...)
Generic test - windows Terminal Services - highFlorian Roth (Nextron Systems) 2022-04-29 — 64d51a51-32a6-49f0-9f3d-17e34d640272
2 Splunk
Okta Non-Standard VPN Usage
Remote Employment Fraud (REF) actors will often use virtual private networks (VPNs) to conceal their true physical location. (...)
Generic experimental authentication - Okta - mediumMarissa Bower, Raven Tait 2025-06-12 2026-05-13 58eb9f80-896c-42f8-86c6-27ab59026c9c
- OpenCanary - HTTPPROXY Login Attempt
Detects instances where an HTTPPROXY service on an OpenCanary node has had an attempt to proxy another page.
Generic test - - OpenCanary - highSecurity Onion Solutions 2024-03-08 — 5498fc09-adc6-4804-b9d9-5cca1f0b8760
2 Potential Persistence Via Netsh Helper DLL
Detects the execution of netsh with "add helper" flag in order to add a custom helper DLL. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - mediumVictor Sergeev, oscd.community 2019-10-25 2023-11-28 56321594-9087-49d9-bf10-524fe8479452
3 Potential Persistence Via Netsh Helper DLL - Registry
Detects changes to the Netsh registry key to add a new DLL value. (...)
Generic test registry_set windows Sysmon · WinEventLog Security - mediumAnish Bogati 2023-11-28 2025-10-08 c90362e0-2df3-4e61-94fe-b37615814cb1
2 Potential Suspicious Activity Using SeCEdit
Detects potential suspicious behaviour using secedit.exe. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - mediumJanantha Marasinghe 2022-11-18 2022-12-30 c2c76b77-32be-4d1f-82c9-7e544bdfe0eb
2 Potentially Suspicious Usage Of Qemu
Detects potentially suspicious execution of the Qemu utility in a Windows environment. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - mediumMuhammad Faisal (@faisalusuf), Hunter Juhan (@threatHNTR) 2024-06-03 — 5fc297ae-25b6-488a-8f25-cc12ac29b744
2 PowerShell AppLocker Policy Discovery Via Get-AppLockerPolicy
Detects AppLocker policy enumeration attempts via PowerShell using the Get-AppLockerPolicy cmdlet and an policy scope of either Effective, LDAP, or Local.
Generic experimental process_creation windows Sysmon · WinEventLog Security - lowTom3306 2026-08-19 — f14b1e99-5e53-4598-98dc-6f20ad7b35e0
1 PUA - Fast Reverse Proxy (FRP) Execution
Detects the use of Fast Reverse Proxy. (...)
Generic test process_creation windows Sysmon · WinEventLog Security - highfrack113, Florian Roth 2022-09-02 2024-11-23 32410e29-5f94-4568-b6a3-d91a8adad863
2 PUA - NPS Tunneling Tool Execution
Detects the use of NPS, a port forwarding and intranet penetration proxy server
Generic test process_creation windows Sysmon · WinEventLog Security - highFlorian Roth (Nextron Systems) 2022-10-08 2024-11-23 68d37776-61db-42f5-bf54-27e87072d17e
1 PUA- IOX Tunneling Tool Execution
Detects the use of IOX - a tool for port forwarding and intranet proxy purposes
Generic test process_creation windows Sysmon · WinEventLog Security - highFlorian Roth (Nextron Systems) 2022-10-08 2024-11-23 d7654f02-e04b-4934-9838-65c46f187ebc
1 RDP Port Forwarding Rule Added Via Netsh.EXE
Detects the execution of netsh to configure a port forwarding of port 3389 (RDP) rule
Generic test process_creation windows Sysmon · WinEventLog Security - highFlorian Roth (Nextron Systems), oscd.community 2019-01-29 2023-02-13 782d6f3e-4c5d-4b8c-92a3-1d05fed72e63
1 Security Software Discovery - Linux
Detects usage of system utilities (only grep and egrep for now) to discover security software discov (...)
Generic test process_creation linux Sysmon - lowDaniil Yugoslavskiy, oscd.community 2020-10-19 2022-11-27 c9d8b7fd-78e4-44fe-88f6-599135d46d60
1 Security Software Discovery - MacOs
Detects usage of system utilities (only grep for now) to discover security software discovery
Generic test process_creation macos - - mediumDaniil Yugoslavskiy, oscd.community 2020-10-19 2022-11-27 0ed75b9c-c73b-424d-9e7d-496cd565fbe0
1 Security Software Discovery Via Powershell Script
Detects calls to "get-process" where the output is piped to a "where-object" filter to search for security solution processes. (...)
Generic test ps_script windows PowerShell - mediumfrack113, Anish Bogati, Nasreddine Bencherchali (Nextron Systems) 2021-12-16 2023-10-24 904e8e61-8edf-4350-b59c-b905fc8e810c
1 Security Tools Keyword Lookup Via Findstr.EXE
Detects execution of "findstr" to search for common names of security tools. (...)
Generic test process_creation windows Sysmon · WinEventLog Security mediumNasreddine Bencherchali (Nextron Systems), frack113 2023-10-20 2023-11-14 4fe074b4-b833-4081-8f24-7dcfeca72b42
3 Sign-In From Malware Infected IP
Indicates sign-ins from IP addresses infected with malware that is known to actively communicate with a bot server.
Generic test - - Azure Risk Detection · Azure - highMark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' 2023-09-03 — 821b4dc3-1295-41e7-b157-39ab212dd6bd
2 Suspicious TCP Tunnel Via PowerShell Script
Detects powershell scripts that creates sockets/listeners which could be indicative of tunneling act (...)
Generic test ps_script windows PowerShell - mediumNasreddine Bencherchali (Nextron Systems) 2022-07-08 — bd33d2aa-497e-4651-9893-5c5364646595
1 Sysmon Discovery Via Default Driver Altitude Using Findstr.EXE
Detects usage of "findstr" with the argument "385201". (...)
Generic test process_creation windows Sysmon · WinEventLog Security - highfrack113 2021-12-16 2023-11-14 37db85d1-b089-490a-a59a-c7b6f984f480
1