Sophos

Troj/Haxdoor-AP

Aliases
  • BackDoor-BAC.gen.c
  • Backdoor.Haxdoor
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 21 December 2005 14:52:27 (GMT)
Detected by All Sophos products
  • Endpoint Security and Control 9.0
  • Small business solutions 4.0

Action

More Information

Troj/Haxdoor-AP is a Trojan for the Windows platform.

When Troj/Haxdoor-AP is installed the following files are created:

<System>\avpe32.dll
<System>\avpe64.sys
<System>\klgcptini.dat
<System>\qz.dll
<System>\qz.sys
<System>\stt82.ini

The files avpe32.dll and qz.dll are detected as Troj/Haxdor-Fam and the files avpe64.sys and qz.sys are detected as Troj/Haxdor-Gen.

The following registry entries are created to run code exported by avpe32.dll on startup:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\avpe32
DllName
avpe32.dll

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\avpe32
Startup
MmPageFree

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\avpe32
Impersonate
1

The file avpe64.sys is registered as a new system driver service named "avpe32", 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\avpe32\

The file avpe64.sys is registered as a new system driver service named "avpe64", with a display name of "TCPIP2 Kernel". Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\avpe64\

Sophos's anti-virus products include Genotype™ detection technology, which can proactively protect against new threats without requiring an update. Sophos customers have been protected against Troj/Haxdoor-AP (detected as Troj/Haxdor-Fam) since version 4.00.

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