Sophos

Troj/Flood-EU

Aliases
  • Backdoor.IRC.Zapchast
  • IRC/Flood.eu.dr
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from December 2005 (4.00)
Protection available since 25 October 2005 08:55:03 (GMT)
Detected by All Sophos products

Action

More Information

Troj/Flood-EU is a backdoor Trojan for the Windows platform.

When Troj/Flood-EU is installed the following files are created:

<Windows>\77804.reg
<Windows>\909376.reg
<Windows>\bear.txt
<Windows>\Con32.dll
<Windows>\connects
<Windows>\edih.dll
<Windows>\Kenan Uninstaller.exe
<Windows>\mirc.exe
<Windows>\remote.ini
<Windows>\up.reg

The file bear.txt is also detected as Troj/Flood-EU.

The file mirc.exe is a legitimate IRC application.

The following registry entry is created to run mirc.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Startup
mirc.exe

The following registry entries are set or modified, so that mirc.exe is run when files with extensions of CHA and IRC are opened/launched:

HKCR\ChatFile\Shell\open\command
(default)
<Windows>\mirc.exe" -noconnect

HKCR\irc\Shell\open\command
(default)
<Windows>\mirc.exe" -noconnect

Registry entries are set as follows:

HKLM\SOFTWARE\Kenan\Kenan
Uninstaller
<Windows>\Kenan Uninstaller.exe

HKCR\ChatFile\DefaultIcon
(default)
<Windows>\mirc.exe

HKCR\irc\DefaultIcon
(default)
<Windows>\mirc.exe

Registry entries are created under:

HKCU\Software\Microsoft\Microsoft Agent\
HKLM\SOFTWARE\Kenan\Kenan\
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\mIRC\

Troj/Flood-EU provides an uninstall option for mirc.exe which can be accessed via the Add or Remove Programs dialog in the Windows Control Panel. The software is listed as "mIRC".

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