Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects the SMB share discovery pattern associated with the DragonForce ransomware, where the system enumerates network shares (excluding ADMIN$) followed by unauthorized bulk write operations to these shares, indicating potential lateral movement and file encryption.
This rule detects processes that load the 'rstrtmgr.dll' library and subsequently perform mass process termination (3 or more distinct processes in under 2 minutes, excluding 'explorer.exe'). This behavior is commonly associated with ransomware, such as DragonForce, which uses the Windows Restart Manager API to identify and forcefully close applications that are locking files they intend to encrypt.
This rule detects potentially malicious PowerShell activity executed from Windows Explorer with obfuscated arguments (-enc, -w hidden) in conjunction with access to the Windows RunMRU registry key, which tracks commands executed via the Windows Run dialog.
Detects execution of PowerShell with a hidden window and base64-encoded command arguments that targets the file 'WindowsUpdate.log'. This pattern is associated with the CRPx0 (ClickFix) ransomware, where it attempts to drop or interact with a stager file disguised as a legitimate Windows update log file.
Detects instances where PowerShell or mshta.exe are launched by a web browser or Windows Explorer, often indicative of the 'ClickFix' social-engineering campaign. In this scenario, users are tricked into copying and pasting malicious commands from a fake CAPTCHA or update prompt directly into a Windows terminal or the Run dialog, leading to code execution.
This rule detects the use of standard Windows administrative utilities (wmic.exe, vssadmin.exe, and wbadmin.exe) to perform destructive operations on volume shadow copies or backup catalogs. These actions are frequently associated with ransomware attacks to prevent system recovery.
Detects the execution of Active Directory Explorer (ADExplorer.exe or ADExplorer64.exe), a legitimate tool often repurposed by adversaries to enumerate Active Directory structures, accounts, and group memberships.
Detects the installation or update of browser extensions that possess both 'declarativeNetRequest' and 'content_scripts' permissions, while also requesting host permissions for major AI assistant or trusted vendor domains (e.g., google.com, gemini.google.com, copilot.microsoft.com, claude.ai). This specific combination of permissions is characteristic of the BragJack attack chain used to redirect network traffic and hijack AI browser agent sessions.
Detects the presence or installation of 'truesight.sys' or 'rentdrv2.sys' drivers, which are associated with malicious activity. The rule also triggers when system utilities like sc.exe or services.exe are used to set services related to these names to a 'demand' start type, indicating potential persistence or malicious driver loading.
This rule detects instances where PowerShell is used to download or execute remote monitoring and management (RMM) tools or remote access software binaries (e.g., AnyDesk, TeamViewer, Atera). This pattern is often indicative of an adversary attempting to establish persistent remote access to a compromised system after initial intrusion.
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