Troj/Bifrose-HM is a backdoor Trojan for the Windows platform.
Troj/Bifrose-HM may inject code into Explorer.exe, in order to hide from the user and bypass some security applications.
When first run Troj/Bifrose-HM copies itself to <System>\CKOTS.exe
Troj/Bifrose-HM also creates the file <System>\plugin1.dat and the hidden file <System>\SysPr.prx, both of which can be deleted.
The following registry entries are created to run CKOTS.exe on startup:
HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\(9B71D88C-C598-4935-C5D1-43AA4DB90836)
stubpath
<System>\CKOTS.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
startkey
<System>\CKOTS.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
startkey
<System>\CKOTS.exe