SigmaHQ Detections
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Detect malicious GPO modifications can be used to implement many other malicious behaviors.
Detects Invoke-Mimikatz PowerShell script and alike. Mimikatz is a credential dumper capable of obtaining plaintext Windows account logins and passwords.
TeamViewer_Desktop.exe is create during install
Detects attempts of decoding a base64 Gzip archive in a PowerShell script. This technique is often used as a method to load malicious content into memory afterward.
Adversaries may manipulate accounts to maintain access to victim systems.
Account manipulation may consist of any action that preserves adversary access to a compromised account, such as modifying credentials or permission groups
Account manipulation may consist of any action that preserves adversary access to a compromised account, such as modifying credentials or permission groups
Detects technique used by MAZE ransomware to enumerate directories using Powershell
Adversaries may abuse the Windows command shell for execution.
The Windows command shell ([cmd](https://attack.mitre.org/software/S0106)) is the primary command prompt on Windows systems.
The Windows command prompt can be used to control almost any aspect of a system, with various permission levels required for different subsets of commands.
Batch files (ex: .bat or .cmd) also provide the shell with a list of sequential commands to run, as well as normal scripting operations such as conditionals and loops.
Common uses of batch files include long or repetitive tasks, or the need to run the same set of commands on multiple system
The Windows command shell ([cmd](https://attack.mitre.org/software/S0106)) is the primary command prompt on Windows systems.
The Windows command prompt can be used to control almost any aspect of a system, with various permission levels required for different subsets of commands.
Batch files (ex: .bat or .cmd) also provide the shell with a list of sequential commands to run, as well as normal scripting operations such as conditionals and loops.
Common uses of batch files include long or repetitive tasks, or the need to run the same set of commands on multiple system
Detects inline execution of PowerShell code from a file
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
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