Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects PowerShell invoking Add-Type to compile C# code inline, indicative of PS1Bot malware. Specifically looks for the use of 'Add-Type' in PowerShell command lines combined with specific C# methods like 'SetWindowsHookEx', 'Graphics', or 'CopyFromScreen', which are often used for screen capture or other malicious activities.
This rule identifies indicators and behaviors associated with KongTuke and PS1Bot campaigns. It specifically looks for network connections to known malicious IPs, domains, and URI paths, as well as the execution or presence of files with known malicious SHA256 hashes associated with these campaigns. The original description mentions 'finger.exe abuse, scheduled task and registry persistence, dynamic C# compilation for keylogging/screen capture, and suspicious PowerShell download cradles', but the current KQL rule only covers network and file/process IOCs.
Detects PowerShell downloading and executing remote payloads using invoke-restmethod/irm and invoke-expression/iex. This technique is widely used by ClearFake and PS1Bot malvertising campaigns to execute in-memory payloads directly from C2 servers.
Detects PS1Bot generating randomly named .lnk files in the Windows Startup folder using PowerShell.
'This query idenifies when rundll32.exe executes a specific set of inline VBScript commands
References: https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/'
References: https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/'
'This query idenifies when rundll32.exe executes a specific set of inline VBScript commands
References: https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/
To use this analytics rule, make sure you have deployed the [ASIM normalization parsers](https://aka.ms/ASimProcessEvent)'
References: https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/
To use this analytics rule, make sure you have deployed the [ASIM normalization parsers](https://aka.ms/ASimProcessEvent)'