high
Summary
Summary
Action- More Information
| Affected operating systems | Windows |
|---|---|
| Characteristics |
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| Protection available since | 16 September 2005 21:45:45 (GMT) |
| Detected by | All Sophos products |
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Action
- Summary
- Action
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Please follow the instructions for removing Trojans.
More Information
Troj/Popno-A is a Trojan for the Windows platform.
When first run Troj/Popno-A copies itself to:
<Windows>\n0tepad.exe
<System>\expl0re.exe
<System>\n0tepad.exe
and creates the file <System>\windll.dll. The windll.dll file contains the message "Think" and may be safely deleted.
The following registry entry is created to run expl0re.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
EXPL0RE.EXE
<System>\EXPL0RE.EXE
The following registry entry is set or modified, so that n0tepad.exe is run when files with extensions of TXT are opened/launched:
HKCR\txtfile\shell\open\command
(default)
"N0TEPAD.EXE %1"
Troj/Popno-A changes the Start Page for Microsoft Internet Explorer by setting the registry entry:
HKCU\Software\Microsoft\Internet Explorer\Main\Start Page
The Trojan automatically displays a website using Internet Explorer.
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