SigmaHQ Detections
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Adversaries may communicate using a protocol and port paring that are typically not associated.
For example, HTTPS over port 8088(Citation: Symantec Elfin Mar 2019) or port 587(Citation: Fortinet Agent Tesla April 2018) as opposed to the traditional port 443.
For example, HTTPS over port 8088(Citation: Symantec Elfin Mar 2019) or port 587(Citation: Fortinet Agent Tesla April 2018) as opposed to the traditional port 443.
Detects suspicious PowerShell invocation command parameters
Remove the Zone.Identifier alternate data stream which identifies the file as downloaded from the internet.
Detects when an attacker tries to change User Account Control (UAC) elevation request destination via the "PromptOnSecureDesktop" value.
The "PromptOnSecureDesktop" setting specifically determines whether UAC prompts are displayed on the secure desktop. The secure desktop is a separate desktop environment that's isolated from other processes running on the system. It's designed to prevent malicious software from intercepting or tampering with UAC prompts.
When "PromptOnSecureDesktop" is set to 0, UAC prompts are displayed on the user's current desktop instead of the secure desktop. This reduces the level of security because it potentially exposes the prompts to manipulation by malicious software.
The "PromptOnSecureDesktop" setting specifically determines whether UAC prompts are displayed on the secure desktop. The secure desktop is a separate desktop environment that's isolated from other processes running on the system. It's designed to prevent malicious software from intercepting or tampering with UAC prompts.
When "PromptOnSecureDesktop" is set to 0, UAC prompts are displayed on the user's current desktop instead of the secure desktop. This reduces the level of security because it potentially exposes the prompts to manipulation by malicious software.
Detects the restoration of files from the defender quarantine
Adversaries may execute their own malicious payloads by hijacking the Registry entries used by services.
Adversaries may use flaws in the permissions for registry to redirect from the originally specified executable to one that they control, in order to launch their own code at Service start.
Windows stores local service configuration information in the Registry under HKLM\SYSTEM\CurrentControlSet\Services
Adversaries may use flaws in the permissions for registry to redirect from the originally specified executable to one that they control, in order to launch their own code at Service start.
Windows stores local service configuration information in the Registry under HKLM\SYSTEM\CurrentControlSet\Services
Detects the use of the 'Pubprn.vbs' Microsoft signed script to execute commands.
Enumerates Active Directory to determine computers that are joined to the domain
Detects the use of the "Get-ADComputer" cmdlet in order to identify systems which are configured for unconstrained delegation.
Detects the execution of an MSI file using PowerShell and the WMI Win32_Product class
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