This is the SIEN AppScion Installer which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. icudt52.dll is the International Components for Unicode (ICU) library provides portable, Unicode and Globalization support for software applications and is recompiled by SIEN Internet Products Ltd. The module icudt52.dll by SIEN Internet Products has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the SIEN SuperInstall installer. Note, this is a common distributed file and although it has been detected it might not be a threat is un-coupled from its distribution source.