Troj/DwnLdr-BYH is a downloader Trojan for the Windows platform.
Troj/DwnLdr-BYH includes functionality to access the internet and communicate with a remote server via HTTP.
Troj/DwnLdr-BYH is a downloader Trojan for the Windows platform.
Troj/DwnLdr-BYH includes functionality to access the internet and communicate with a remote server via HTTP.
When first run Troj/DwnLdr-BYH copies itself to <System>\ipf.exe and creates the file <System>\drivers\winut.dat.
The following registry entry is created to run ipf.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
IPF
<System>\ipf.exe
The following registry entries are set, affecting internet security:
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
<original path to Trojan executable>
<original path to Trojan executable>:*:Enabled:<original Trojan filename>
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\
<System>\ipf.exe
<System>\ipf.exe:*:Enabled:ipf