Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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This rule detects instances where common web browsers (chrome.exe, msedge.exe, firefox.exe, iexplore.exe) or mshta.exe spawn shell processes (powershell.exe, pwsh.exe, cmd.exe) with suspicious command-line arguments. These arguments often indicate malicious activity such as downloading and executing code, using encoded commands, or hiding the execution window, which are typical indicators of a web-based delivery or exploitation attempt.
This rule detects the potential tampering of IIS logging configurations within a short duration following suspected web shell activity. It monitors for the execution of appcmd.exe or PowerShell commands that disable or modify IIS logging, specifically targeting sites or configurations after an IIS worker process (w3wp.exe) has performed activity associated with a webshell. This pattern is indicative of an attacker attempting to conceal their footprint after gaining access.
Detects attempts to clear Windows event logs using the native 'wevtutil' command-line utility or PowerShell 'Clear-EventLog' command. The rule applies elevated risk levels when the activity is initiated by system-level processes or accounts, which is often indicative of adversary activity attempting to remove forensic evidence of post-exploitation actions.
Detects anomalous activity where a process or user attempts to stop or disable multiple security-related services (e.g., Windows Defender, Sysmon, EDR agents) within a short window. This behavior is indicative of an adversary attempting to impair defensive monitoring and protection tools during a compromise.
This rule detects the uninstallation or removal of the ModSecurity module from an IIS server, followed by suspicious POST requests to .aspx files within a 30-minute window. This behavioral pattern is indicative of an attacker disabling web application firewall (WAF) protections before attempting to exploit vulnerabilities or upload web shells.
Detects Akira ransomware-related activity by identifying the creation of characteristic ransom notes or files with the .akira extension, combined with signs of security defense impairment (such as disabling Windows Defender via command line).
Detects successful sign-ins to Microsoft Graph where Multi-Factor Authentication (MFA) was expected but not applied or not enabled, and the authentication method used was not MFA or passwordlessMFA. This could indicate an MFA bypass or misconfiguration, allowing access to sensitive resources without the required second factor.
Detects suspicious network connections or process activity targeting Discord webhooks or API endpoints, potentially indicating data exfiltration, command and control, or token validation by malicious actors. The rule specifically looks for non-Discord processes making these connections or using suspicious user agents.
Detects attempts by explorer.exe to access browser credential and cookie files from common web browsers (Chrome, Edge, Firefox). This activity is highly suspicious as explorer.exe is not typically involved in legitimate access to these sensitive files, suggesting potential credential theft or reconnaissance.
Detects the creation of ASPX files in sensitive SharePoint directories (masterpage, layouts) by the w3wp.exe process, which is indicative of web shell deployment. Additionally, this rule identifies instances where w3wp.exe spawns shell processes like cmd.exe or powershell.exe, suggesting potential command execution via a compromised web server.
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