--- Name: Mshtml.dll Description: Microsoft HTML Viewer Author: Created: 2018-05-25 Commands: - Command: rundll32.exe Mshtml.dll,PrintHTML "C:\temp\calc.hta" Description: "Invoke an HTML Application via mshta.exe (note: pops a security warning and a print dialogue box)." Usecase: Launch an HTA application. Category: Execute Privileges: User MitreID: T1218.011 OperatingSystem: Windows 10, Windows 11 Full_Path: - Path: c:\windows\system32\mshtml.dll - Path: c:\windows\syswow64\mshtml.dll Code_Sample: - Code: Detection: - Sigma: https://github.com/SigmaHQ/sigma/blob/08ca62cc8860f4660e945805d0dd615ce75258c1/rules/windows/process_creation/win_susp_rundll32_activity.yml Resources: - Link: https://twitter.com/pabraeken/status/998567549670477824 - Link: https://windows10dll.nirsoft.net/mshtml_dll.html Acknowledgement: - Person: Pierre-Alexandre Braeken Handle: '@pabraeken' ---