BKDR_BIFROSE.XXA
Mcafee: BackDoor-CEP.svr
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
103,366 bytes
EXE
Yes
04 Aug 2011
Arrival Details
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This backdoor drops the following files:
- %WINDOWS%\windows\klog.dat
- %User Profile%\Application Data\addon.dat
(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)
It drops the following copies of itself into the affected system:
- %WINDOWS%\windows\ixplorer
It creates the following folders:
- %WINDOWS%\windows
Autostart Technique
This backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{115E5F54-4B19-0B24-6070-DBFD1EC1E5AD}
stubpath = %WINDOWS%\windows\ixplorer s
Other System Modifications
This backdoor adds the following registry keys:
HKEY_CURRENT_USER\Software\Bifrost
HKEY_LOCAL_MACHINE\SOFTWARE\Bifrost
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{115E5F54-4B19-0B24-6070-DBFD1EC1E5AD}