Identifier / Programs / Windows
msedgewebview2.exe
Microsoft Edge WebView2 file version info (xCyclopedia)
LOLBAS Execute 2 Sigma rules name it 1 ATT&CK technique 4 documented commands 2 known copies with hashes
How msedgewebview2.exe is abused
Execute T1218.015 System Binary Proxy Execution: Electron Applications
--no-sandbox--browser-subprocess-pathExecute T1218.015 System Binary Proxy Execution: Electron Applications
--utility-cmd-prefixExecute T1218.015 System Binary Proxy Execution: Electron Applications
--disable-gpu-sandbox--gpu-launcherExecute T1218.015 System Binary Proxy Execution: Electron Applications
--no-sandbox--renderer-cmd-prefixEach abuse is LOLBAS's category and the options and words it uses; the full write-up is on LOLBAS's page for msedgewebview2.exe.
4 documented commands
Execute T1218.015 System Binary Proxy Execution: Electron Applications Low privileges privileges
This command launches the Microsoft Edge WebView2 browser control without sandboxing and will spawn the specified executable as its subprocess.
msedgewebview2.exe --no-sandbox --browser-subprocess-path="{PATH_ABSOLUTE:.exe}"Trips 1 Sigma rule: mediumPotentially Suspicious Electron Application CommandLine by frack113, Nasreddine Bencherchali (Nextron Systems)
Execute T1218.015 System Binary Proxy Execution: Electron Applications User privileges
This command launches the Microsoft Edge WebView2 browser control without sandboxing and will spawn the specified command as its subprocess.
msedgewebview2.exe --utility-cmd-prefix="{CMD}"Trips 1 Sigma rule: mediumPotentially Suspicious Electron Application CommandLine by frack113, Nasreddine Bencherchali (Nextron Systems)
Execute T1218.015 System Binary Proxy Execution: Electron Applications User privileges
This command launches the Microsoft Edge WebView2 browser control without sandboxing and will spawn the specified command as its subprocess.
msedgewebview2.exe --disable-gpu-sandbox --gpu-launcher="{CMD}"Trips 1 Sigma rule: mediumPotentially Suspicious Electron Application CommandLine by frack113, Nasreddine Bencherchali (Nextron Systems)
Execute T1218.015 System Binary Proxy Execution: Electron Applications User privileges
This command launches the Microsoft Edge WebView2 browser control without sandboxing and will spawn the specified command as its subprocess.
msedgewebview2.exe --no-sandbox --renderer-cmd-prefix="{CMD}"Trips 1 Sigma rule: mediumPotentially Suspicious Electron Application CommandLine by frack113, Nasreddine Bencherchali (Nextron Systems)
All 4 commands the identifier reads trip a Sigma process-creation rule. These commands and their descriptions are from LOLBAS’s entry for msedgewebview2.exe, by Matan Bahar, at commit 2056cb766250 of 2026-09-26, under the GPL-3.0 and LOLBAS’s notice, with no warranty. Changed: Markdown is shown formatted. The source is in lolbas-gtfobins-commands.json.gz, and the full entry is on LOLBAS’s page for msedgewebview2.exe. The identifier reads each with LOLBAS’s placeholders filled in: a URL as https://example.com/file, a share as \\192.0.2.10\share\file, a path as C:\Data\file and a command as calc.exe.
What detects it
Is it the real msedgewebview2.exe?
C:\Program Files (x86)\Microsoft\Edge\Application\85.0.564.68\C:\Program Files (x86)\Microsoft\Edge\Application\95.0.1020.40\2 known copies
95.0.1020.40 · C:\Program Files (x86)\Microsoft\Edge\Application\95.0.1020.40\msedgewebview2.exe · signed by Microsoft Corporation
0174e807d46b7a3480f4c812fa279672705b943c3126dcb05154d5fe2c081cf485.0.564.68 · C:\Program Files (x86)\Microsoft\Edge\Application\85.0.564.68\msedgewebview2.exe · signed by Microsoft Corporation
e97da08de8e6d7b2e6b6a710633fd9cc012b6dbd5fd6384ba9aac0581b55715fFrom the file’s version info and the copies recorded by xCyclopedia (MIT). A copy in another folder, signed by someone else or with another hash is not necessarily malicious, but it is worth a closer look. In Ceplin, "<sha256>".whatis() says which known copy a hash is.