WORM_KUBFACE.SDH
Worm:Win32/Slenping.AD (Microsoft), W32.Yimfoca.B (Symantec), Win32/Boberog.AZ worm (ESET),
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm arrives by connecting affected removable drives to a system.
TECHNICAL DETAILS
Arrival Details
This worm arrives by connecting affected removable drives to a system.
Installation
This worm drops the following copies of itself into the affected system and executes them:
- %Application Data%\HEX-5823-6893-6818\jutched.exe - for Windows XP and prior
- %User Profile%\Public\jutched.exe - for Windows Vista and later
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
It drops the following files:
- %System%\winrtsnr.txt
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Autostart Technique
This worm adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Java Update Manager = "%Application Data%\HEX-5823-6893-6818\jutched.exe" - for Windows XP and prior
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Java Update Manager = "%User Profile%\Public\HEX-5823-6893-6818\jutched.exe" - for Windows Vista and later
Other System Modifications
This worm creates the following registry entry(ies) to bypass Windows Firewall:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Application Data%\HEX-5823-6893-6818\jutched.exe = "%Application Data%\HEX-5823-6893-6818\jutched.exe:*:Enabled:Java Update Manager" - for Windows XP and prior
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%User Profile%\Public\HEX-5823-6893-6818\jutched.exe = "%User Profile%\Public\HEX-5823-6893-6818\jutched.exe:*:Enabled:Java Update Manager" - for Windows Vista and later
Propagation
This worm creates the following folders in all removable drives:
- {Drive Letter}:\8585485
It drops the following copy(ies) of itself in all removable drives:
- {Drive Letter}:\8585485\{folder name}s.exe
Other Details
This worm connects to the following possibly malicious URL:
- {BLOCKED}ution.nicaze.net
NOTES:
It may also arrive via instant-messaging (IM) applications.
It drops the following Shortcut (.LNK) files in all removable drives:
- {Drive Letter}:\{folder name}s.lnk
It uses the names of the folders in the removable drive to trick the user into executing a copy itself.