[Summary]

It causes abnormal system reboot.

[Symptom of Infection]

1. It creates files to below path.
(Windows Folder)\(Random Name).dat (Trojan.Win32.Delf.18432)

2. It creates below malicious code to driver related registry.
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32] "midi9"="(System Folder)\..\(Random Name).dat 0yAAAAAAAA"

3. Infected system cannot be started normally on reboot.

[How to encounter manually]

1. Do slave connect the infected system's hard drive to normal system, then reboot the system.
2. Execute regedit. [Start]-[Run]-[regedit]-[Enter]
3. Select [HKEY_LOCAL_MACHINE], and click [File]-[Load Hive].
4. From WINDOWS\system32\config in infected hard drive, select software file and click [Open].
5. Enter certain key to key name.
6. Delete midi9 value in the path of [HKEY_LOCAL_MACHINE]\Key name\Microsoft\Windows NT\CurrentVersion\Driver32.
7. On Loading Hive, select entered certain key(HKEY_LOCAL_MACHINE\Key name) and unload hive.
8. Slave connected hard drive connects to infected system, and scan drive for repair by ViRobot with the latest engine.

[How to repair]

1. If you are WinXP/ME users, please be inactivate System Recovery Function.
The reason why being inactivate of the system recovery is to clean the virus completely.
You can refer to MS technical documents(Q263455) for more details.

2. Update the engine module for the latest one.
To repair this virus, you need to update the engine for the latest one.

a. ViRobot products users
     -Download the latest engine files via our website (www.hauri.net)
b. Non-ViRobot products users
     - Use the LiveCall (Free Scan) via the website (http://www.livecall.co.kr)
     - Use the trial version of ViRobot products (30days only)

3. How to scan the virus.

a. Run your ViRobot, and choose "all files" in scan option.
- ViRobot Desktop 5.0 : [Tools] -> [Configuration] -> [Virus Scan] : Check all files

- ViRobot Desktop 5.5 : [Tools] -> [Configuration] -> [Virus Scan] : Check all files
- LiveCall (Free Scan) : [Advanced Scan] : Check

b. Repair all viruses detected.

c. If [Auto-repair after rebooting] message shows up, please try to re-scan after rebooting the PC.