Binary file used by .NET to compile JavaScript code to .exe or .dll format Located at: C:\Windows\Microsoft.NET\Framework\v4.0.30319\Jsc.exe; C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Jsc.exe; C:\Windows\Microsoft.NET\Framework\v2.0.50727\Jsc.exe.
jscjscSandbox: execFile · Timeout: 30s
build.compile.code Outputs
process.output Command execution output
process_spawn Produces
process.output| Resource | Value |
|---|---|
| CPU | low |
| Memory | 16 MB |
| Network | low |
| Disk I/O | low |
Use jsc.exe to compile JavaScript code stored in the provided .JS file and generate a .EXE file with the same name. (Compile attacker code on system. Bypass defensive counter measures.)
jsc.exe {PATH:.js}Use jsc.exe to compile JavaScript code stored in the .JS file and generate a DLL file with the same name. (Compile attacker code on system. Bypass defensive counter measures.)
jsc.exe /t:library {PATH:.js}| Type | Rule / Indicator |
|---|---|
| sigma | https://github.com/SigmaHQ/sigma/blob/35a7244c62820fbc5a832e50b1e224ac3a1935da/rules/windows/process_creation/proc_creation_win_lolbin_jsc.yml |
| ioc | Jsc.exe should normally not run a system unless it is used for development. |
jsc is a Windows LOLBin. Binary file used by .NET to compile JavaScript code to .exe or .dll format Located at: C:\Windows\Microsoft.NET\Framework\v4.0.30319\Jsc.exe; C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Jsc.exe; C:\Windows\Microsoft.NET\Framework\v2.0.50727\Jsc.exe.