However, this didn’t prevent cybercrime groups such as Cobalt from exploiting this vulnerability in order to deliver a variety of malware, including FAREIT, Ursnif, and a cracked version of the Loki infostealer, a keylogger that was primarily advertised as capable of stealing passwords and cryptocurrency wallets. (Creating a hashtable for a cmdlet's parameters is known as splatting and is a convenient way to build a large number of parameters for a cmdlet in a more readable and maintainable way.Back in November 2017, Microsoft patched CVE-2017-11882, a remote code execution vulnerability that affected Microsoft Office. Next, we create a hashtable for the Start-Process cmdlet and call it using the operator. (Note that in the content of the array we are preserving the " characters.) ![]() ![]() In the above example, each element in the $argumentList array is a separate string and contains the following elements: /i Start-Process example creates an array of string arguments for the -ArgumentList parameter using single quotes ( ') and string formatting ( -f). I recommend an approach like the following: $msiFileName = ".\agent.msi" The msiexec.exe program seems to have some peculiarities in its command-line parser. Note: Strictly speaking, you do not need the embedded `".`" quoting in your case, given that your property values have no embedded spaces. Therefore, use the following (using positional argument binding to -FilePath and -ArgumentList, respectively): Start-Process -Wait $env:systemroot\system32\msiexec.exe "/i. While this is somewhat cumbersome, it does have the advantage of allowing you to directly control the exact command line that the target process will see - and that enables you satisfy msiexec's picky syntax requirements where PROP="value with spaces" must be passed exactly with this value-only double-quoting (whereas PowerShell - justifiably - turns this argument into "PROP=value with spaces" behind the scenes, when it - of necessity - re-quotes arguments to synthesize the actual command line to use). To embed " characters in a "." string, escape them as `" (or as "" inside a '.' string, you needn't escape them at all). a double-quoted string, ".".Īny embedded quoting inside this overall "." string must itself use double-quoting only, as CLIs on Windows generally only understand " (double quotes) and not also ' (single quotes) to have syntactic function. To incorporate variable values, you must use an expandable string, i.e. Maybe someone can help me to fix this error?ĭue to a long-standing bug in Start-Process, it is actually preferable to always pass all arguments for the target process encoded in a single string passed to -ArgumentList ( -Args), rather than individually, as elements of an array - see this answer. I think the interpration of the variable is false, but I can not fix it. I tried that also, but I don't know how to fix this failure. Start-Process -FilePath "$env:systemroot\system32\msiexec.exe" -ArgumentList ".\agent.msi" MyServer="servername:8080|4344" MyDomain=**"$domain"'**) -wait I tried different codes, but nothing helped: Start-Process -FilePath "$env:systemroot\system32\msiexec.exe" -ArgumentList ".\agent.msi" MyServer="servername:8080|4344" MyDomain="999-Test"') -waitīut for automation I have to use the variable $domain to generate the correct domain. The following parameters are available and if I use this on that way, the installation will be correct. I am trying to start an installation via msiexec.
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