The following instructions have been created to help you to get rid of "Win32.Agent.icb" manually.
Use this guide at your own risk; software should usually be better suited to remove malware, since it is able to look deeper.

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Threat Details:

Categories:
  • trojan

Description:
The trojan installs itself as a library file into the system directory and creates some encrypted files in the help directory. It adds some registry entries and changes the user32.dll. This file has to be restored manually (a copy of it exists under random name in the system directory). It connects to the internet and loads the installed library file in the system directory via the changed user32.dll and winlogon.exe. It is able to send e-mails and terminate processes.
Removal Instructions:

Files:

Please use Windows Explorer or another file manager of your choice to locate and delete these files.
  • The file at "<$WINDIR>\Help\amsxm.ahp".
  • The file at "<$WINDIR>\Help\hfgu.chn".
  • The file at "<$WINDIR>\Help\mgr.chmn".
  • The file at "<$WINDIR>\Help\mxs.hl".
  • The file at "<$SYSDIR>\drivers\atmapi.sys".
Make sure you set your file manager to display hidden and system files. If Win32.Agent.icb uses rootkit technologies, use our RootAlyzer or our Total Commander anti-rootkit plugins.
You will have to use a global search for files without a name specified. Be extra careful, because just the name might not be enough to identify files!

Important: There are more files that cannot be safely described in simple words. Please use Spybot-S&D to remove them.

Registry:

You can use regedit.exe (included in Windows) to locate and delete these registry entries.
  • Delete the registry value "mid" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\".
  • Delete the registry value "st" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\".
If Win32.Agent.icb uses rootkit technologies, use our RegAlyzer, RootAlyzer or our Total Commander anti-rootkit plugins.

There are more registry entries that cannot be safely described in simple words. Please use Spybot-S&D to remove them.

Final Words:

If neither Spybot-S&D nor self help did resolve the issue or you would prefer one on one help,
  1. Please read these instructions before requesting assistance,
  2. Then start your own thread in the Malware Removal Forum where a volunteer analyst will advise you as soon as available.