Ankit Mehta
@SecvynIndiaTrusted contributorCompletionist
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8,655 detections
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Detects the creation of WMI event subscriptions that utilize CommandLineEventConsumer or ActiveScriptEventConsumer to execute common living-off-the-land binaries like powershell.exe, cmd.exe, wscript.exe, cscript.exe, or mshta.exe. This behavior is a common technique used for establishing persistence or executing malicious payloads via WMI event mechanisms.
This rule detects potential persistence via Registry Run keys (T1547.001) where a value is added pointing to a file in an AppData or Temp directory, followed by a successful outbound network connection from a process located in those same directories. This behavior is indicative of malware or an adversary establishing persistence and immediately reaching out to a command-and-control (C2) server.
This rule detects scenarios where a legitimately signed process loads a DLL from a user-writable path (e.g., Downloads, Temp, or AppData). It correlates file creation/modification events for DLLs in these suspicious directories with subsequent image load events by signed processes, a common indicator of potential DLL side-loading or hijacking.
Detects workstations establishing multiple connections to non-standard, internal management ports (SSH, Telnet, SNMP). This behavior is often associated with lateral movement or unauthorized network scanning using tools that leverage management protocols.
This rule detects the use of common cloud command-line interfaces (Azure CLI, Azure PowerShell, and AWS CLI) to perform resource discovery, specifically identifying commands used to list virtual machines or describe EC2 instances. Such activity, if performed by an unexpected user or on an endpoint where cloud management tools are not typically installed, may indicate reconnaissance by an adversary.
This rule monitors the creation of new Azure Function Apps and identifies those that receive external, non-private network requests within 48 hours of their creation. This pattern may indicate the deployment of malicious or unauthorized serverless infrastructure for command-and-control, proxying, or automated tasks.
This rule detects common security product executables (MsMpEng.exe, SenseNdr.exe, csfalconservice.exe, CylanceSvc.exe) that are running from file paths inconsistent with their legitimate installation directories. This behavior is indicative of an adversary attempting to masquerade as trusted security software to evade detection or achieve persistence.
Detects high-impact configuration changes to Azure management groups or subscriptions (e.g., write/delete operations) that are performed by non-privileged accounts or outside of defined business change windows. This activity can indicate unauthorized privilege escalation, resource manipulation, or reconnaissance by an adversary.
This rule detects the creation of an SVG file in common user-writable/temporary directories, followed closely (within 60 seconds) by the execution of common scripting interpreters (cmd.exe, powershell.exe, wscript.exe) by a web browser. This behavior is often associated with browser-based exploitation or malicious file downloads where an attacker uses an SVG or accompanying file to trigger secondary malicious processes.
Detects suspicious OAuth application or service principal registration, or permission consent, performed by users who are not part of designated IT administrator groups. This rule flags high-privilege permission grants (e.g., Mail.Read, Directory.ReadWrite.All) or application consent events, which are common methods for establishing long-term persistence in cloud environments.
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