Here is the install log file from a Linkey injection. It provides some interesting details of how this adware works.
Init
Product version 0.0.0.431
Application ID: 100
INSTDIR: C:\Program Files\Linkey
defaultBrowserName=Chrome
IE.GetInfo: iePathExe=C:\Program Files\Internet Explorer\IEXPLORE.EXE
IE.GetInfo: C:\Program Files\Internet Explorer\iexplore.exe
FF.GetInfo: ffVersion=
Chrome.GetInfo: chromePathExe=C:\Program Files\Google\Chrome\Application
Chrome.GetInfo: GetLongPathName - C:\Program Files\Google\Chrome\Application
MainTools.GetBrowsers: installBrowserName=IE, defaultBrowserName=Chrome
MainTools.GetBrowsers: hostedBrowserPath=C:\Program Files\Internet Explorer\iexplore.exe
isIESupported=Yes, isFFSupported=No, isChromeSupported=Yes
Sections
Section: used E:\Work\Linkey\G2\Client\installation\scripts\Linkey\external\Install.nsi
INSTDIR=C:\Program Files\Linkey
MainTools.UnpackFiles: C:\Users\test\AppData\Local\Temp\nss2FF9.tmp\nsq30B0.tmp\pack.exe
MainTools.UnpackFiles: C:\Program Files\Linkey
${__FUNCTION__}: GetFullPathName /SHORT $ssDllShort C:\Program Files\Linkey\IEExtension\iedll.dll
${__FUNCTION__}: GetFullPathName /SHORT C:\Program Files\Linkey\IEExtension\iedll64.dll
${__FUNCTION__}: HKLM SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows AppInit_DLLs C:\PROGRA~1\Linkey\IEEXTE~1\iedll.dll
${__FUNCTION__}: C:\Windows\system32\regsvr32.exe /s C:\Program Files\Linkey\IEExtension\iedll.dll
IE.ApproveExtension:
${__FUNCTION__}: C:\Users\test\AppData\Local\Temp\nss2FF9.tmp\Helper::ApproveIEAddon(t, t, i) v({56565656-5BA0-4048-BDDE-232323232323}, 8196, 8196)
Section: call MainTools.SaveSettings
Section: install signed uninstaller - C:\Program Files\Linkey\Uninstall.exe
CopyFiles /SILENT C:\Users\test\AppData\Local\Temp\nss2FF9.tmp\Helper.dll C:\Program Files\Linkey\Helper.dll
Section: call StatsHelper.SendStats
StatsHelper.SendStats: service.linkeyproject.com and install_statistics.php
StatsHelper.SendStats: Helper::FinishEncryptAndSend(t, t, t, t, i) v(service.linkeyproject.com, install_statistics.php, 300, 8196, 8196)
StatsHelper.SendStats: returns US,1397656979
configBufferStr: US,1397656979
country: US
itime: 1397656979
Section: call StatsHelper.SendMlstats
call XMLTools.SaveStatsSettings
.onInstSuccess, Shortcut support: \
.onInstSuccess, call ShortcutTools.AddShortcutToDesktop with isDesktopShortCut: No
.onInstSuccess, call ShortcutTools.AddShortcutToQuickLaunch with isQuickLaunchShortCut: No
.onInstSuccess, call ShortcutTools.AddShortcutToTaskBar with isTaskBarShortCut: No MainTools.OpenFinalWebUrl
.onInstSuccess, call DownloadTools.RemovePacks
new log: C:\Program Files\Linkey\log.log
old log: C:\Program Files\Linkey\log.log