high
Summary
Summary
Action- More Information
| Affected operating systems | Windows |
|---|---|
| Protection available since | 1 October 2005 15:54:09 (GMT) |
| Detected by | All Sophos products |
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Action
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More Information
Troj/Haxdoor-AM is a Trojan for the Windows platform.
Troj/Haxdoor-AM runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer.
Troj/Haxdoor-AM includes functionality to:
- stealth its files, processes, registry entries and services
- prevent itself being terminated
- prevent itself being deleted
- disable other software, including anti-virus, firewall and security related applications
- log keystrokes and steal password information
- intercept banking information
- download and execute files from a remote location
- change the default browser startpage and similar information
When Troj/Haxdoor-AM is installed the following files are created:
<System>\avpu32.dll
<System>\avpu64.sys
<System>\klgcptini.dat
<System>\qz.dll
<System>\qz.sys
<System>\stt82.ini
klgcptini.dat and stt82.ini are clean log files. The other files are detected as Troj/Haxdoor-AM.
Troj/Haxdoor-AM may attempt to inject avpu32.dll into the process explorer.exe.
Troj/Haxdoor-AM attempts to delete a number of registry entries under the following location:
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\
Registry entries may be created at one of the places to run code exported by avpu32.dll on startup:
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\avpu32
HKLM\System\CurrentControlSet\Control\MPRServices\TestService
The file avpu64.sys may be registered as a new system driver service named "avpu32", with a display name of "TCPIP2 Kernel32" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\avpu32\
The file avpu64.sys may be registered as a new system driver service named "avpu64", with a display name of "TCPIP2 Kernel". Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\avpu64\
Troj/Haxdoor-AM may set entries at the following locations to allow its components to be run in Safe Mode:
SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\
SYSTEM\CurrentControlSet\Control\SafeBoot\Network\
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