Identifier / Programs / Windows
csi.exe
LOLBAS Execute 2 Sigma rules name it 3 ATT&CK techniques 1 documented command
How csi.exe is abused
Execute T1127 Trusted Developer Utilities Proxy Execution
Each abuse is LOLBAS's category and the options and words it uses; the full write-up is on LOLBAS's page for csi.exe.
1 documented command
Execute T1127 Trusted Developer Utilities Proxy Execution User privileges
Use csi.exe to run unsigned C# code.
csi.exe {PATH:.cs}The command the identifier reads trips no Sigma process-creation rule. These commands and their descriptions are from LOLBAS’s entry for csi.exe, by Oddvar Moe, 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 csi.exe. The identifier reads it 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.