TROJ_AGENT.HJS malicious Trojan
Thursday, January 24, 2008
This Trojan may be downloaded unknowingly by a user when visiting malicious Web sites.
It drops files also detected by Trend Micro as TROJ_AGENT.HJS.
It creates a registry entry to enable its automatic execution at every system startup.
Solution:
Important Windows ME/XP Cleaning Instructions
Users running Windows ME and XP must disable System Restore to allow full scanning of infected computers.
Users running other Windows versions can proceed with the succeeding solution set(s).
Restarting in Safe Mode
This malware has characteristics that require the computer to be restarted in safe mode. Go to this page for instructions on how to restart your computer in safe mode.
Removing Autostart Entry from the Registry
Removing autostart entries from the registry prevents the malware from executing at startup.
If the registry entry below is not found, the malware may not have executed as of detection. If so, proceed to the succeeding solution set.
1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
2. In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>
Windows>CurrentVersion>Run
3. In the right panel, locate and delete the entry:
Regscan = "%System%\regscan.exe"
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
4. Close Registry Editor.
It drops files also detected by Trend Micro as TROJ_AGENT.HJS.
It creates a registry entry to enable its automatic execution at every system startup.
Solution:
Important Windows ME/XP Cleaning Instructions
Users running Windows ME and XP must disable System Restore to allow full scanning of infected computers.
Users running other Windows versions can proceed with the succeeding solution set(s).
Restarting in Safe Mode
This malware has characteristics that require the computer to be restarted in safe mode. Go to this page for instructions on how to restart your computer in safe mode.
Removing Autostart Entry from the Registry
Removing autostart entries from the registry prevents the malware from executing at startup.
If the registry entry below is not found, the malware may not have executed as of detection. If so, proceed to the succeeding solution set.
1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
2. In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>
Windows>CurrentVersion>Run
3. In the right panel, locate and delete the entry:
Regscan = "%System%\regscan.exe"
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
4. Close Registry Editor.
