Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

1,217 detections

Detects exploitation attempts targeting the TerraMaster TOS vulnerability CVE-2020-28188. This rule specifically looks for GET requests to '/include/makecvs.php' with a '?Event=' parameter, combined with common command injection payloads such as 'curl', 'wget', '.py', '.sh', 'chmod', or '_GET' in the URI query.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
0019
Detects attempts to exploit the VMware Workspace ONE Access Admin Remote Code Execution vulnerability (CVE-2022-31659) by monitoring for POST requests to the '/SAAS/jersey/manager/api/migrate/tenant' URI. This URI is associated with the migration API, and suspicious activity here could indicate an attacker attempting to leverage the vulnerability for remote code execution.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
0018
This rule detects suspicious registration of IIS modules, a technique used by adversaries to establish persistence on web servers. It specifically looks for `w3wp.exe` (IIS worker process) as the parent process executing commands related to adding modules via `appcmd.exe`, or using PowerShell with `system.enterpriseservices.internal.publish`, or using `gacutil` with the `/I` flag. These activities are indicative of malicious IIS extensions or backdoors being installed, as described in Microsoft's threat report on IIS backdoors.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
0018
This rule detects attempts to disable HTTP logging on a Windows Internet Information Services (IIS) web server using the 'appcmd.exe' utility. Specifically, it looks for command-line arguments that set the 'httplogging' section with 'dontLog:true'. This activity is associated with defense evasion tactics, as observed by threat groups like Threat Group-3390 (Bronze Union), to remove forensic evidence of their activities.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
0016
Detects the use of 'aspnet_regiis.exe' with specific command-line arguments to decrypt Microsoft IIS connection strings. This activity is indicative of an attacker, potentially with web shell access, attempting to extract sensitive credentials like MSSQL service account passwords from IIS configurations.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
0016
Detects the use of the "appcmd.exe" utility to create or modify global URL rewrite rules within Internet Information Services (IIS). This activity is suspicious because threat actors have been observed leveraging this method to establish persistence or facilitate access to webshells by redirecting traffic or enabling specific paths.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
0014
Detects processes spawned from web servers (PHP, Tomcat, IIS, etc.) that perform reconnaissance looking for the existence of popular scripting tools (perl, python, wget) on the system via the help commands. This activity is often associated with webshells attempting to understand the capabilities of the compromised server.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
0013
Detects possible Java payloads in web access logs
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
002
Detects path traversal exploitation attempts
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
002
Detects potential SQL injection attempts via GET requests in access logs.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
001
Detects suspicious Windows strings in URI which could indicate possible exfiltration or webshell communication
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
001
Detects suspicious file type dropped by an Exchange component in IIS
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
001
Detects the creation of files with certain extensions on a static web site. This can be indicative of potential uploads of a web shell.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
001
Detects use of aspnet_regiis to decrypt Microsoft IIS connection strings. An attacker with Microsoft IIS web server access via a webshell or alike can decrypt and dump any hardcoded connection strings, such as the MSSQL service account password using aspnet_regiis command.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
001
Detects a suspicious IIS module registration as described in Microsoft threat report on IIS backdoors
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
001
When IIS uses an old .Net Framework it's possible to enumerate folders with the symbol "~"
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
000
Detects exploitation attempt using the JNDI-Exploit-Kit
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
000
Detects suspicious file type dropped by an Exchange component in IIS into a suspicious folder
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
000
Detects the Internet Information Services (IIS) command-line tool, AppCmd, being used to list passwords
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
000
Detects processes spawned from web servers (PHP, Tomcat, IIS, etc.) that perform reconnaissance looking for the existence of popular scripting tools (perl, python, wget) on the system via the help commands
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
2 years ago
000
Page 58 of 58