Trojan.AVKill.15432

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Classes\.cmd] '' = 'txtfile'
[<HKLM>\SOFTWARE\Classes\.bat] '' = 'txtfile'
[<HKLM>\SOFTWARE\Classes\.exe] '' = 'exefile'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '<Virus name>.exe' = '<Full path to virus>'
[<HKLM>\SOFTWARE\Classes\.exe] '' = 'txtfile'
[<HKLM>\SOFTWARE\Classes\.com] '' = 'txtfile'

Malicious functions:

To complicate detection of its presence in the operating system,

blocks execution of the following system utilities:

Registry Editor (RegEdit)

Executes the following:

<SYSTEM32>\subst.exe t: C:\
<SYSTEM32>\subst.exe k: C:\
<SYSTEM32>\subst.exe p: C:\
<SYSTEM32>\subst.exe n: C:\
<SYSTEM32>\subst.exe o: C:\
<SYSTEM32>\subst.exe r: C:\
<SYSTEM32>\subst.exe v: C:\
<SYSTEM32>\subst.exe w: C:\
<SYSTEM32>\subst.exe x: C:\
<SYSTEM32>\subst.exe q: C:\
<SYSTEM32>\subst.exe s: C:\
<SYSTEM32>\subst.exe u: C:\
<SYSTEM32>\subst.exe m: C:\
<SYSTEM32>\taskkill.exe /f /im 360tray.exe
<SYSTEM32>\reg.exe add
<SYSTEM32>\reg.exe add HKEY_CURRENT_USER\SOFTWARW\Microsoft\Windows\CurrentVersion\Policies\Explorer /v nodrives /t REG_DWORD /d 60 /f
<SYSTEM32>\cmd.exe /c c:\УрТн.bat
<SYSTEM32>\cmd.exe /c c:\1.bat
<SYSTEM32>\taskkill.exe /im 360tray.exe /f
<SYSTEM32>\subst.exe i: C:\
<SYSTEM32>\subst.exe j: C:\
<SYSTEM32>\subst.exe l: C:\
<SYSTEM32>\reg.exe add HKEY_CURRENT_USER\SOFTWARW\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 0 /f
<SYSTEM32>\subst.exe b: C:\
<SYSTEM32>\subst.exe h: C:\

Terminates or attempts to terminate

the following user processes:

360tray.exe

Searches for windows to

detect analytical utilities:

ClassName: '' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'PROCMON_WINDOW_CLASS' WindowName: ''
ClassName: '' WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'RegmonClass' WindowName: ''
ClassName: '' WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'GBDYLLO' WindowName: ''
ClassName: 'OLLYDBG' WindowName: ''
ClassName: 'FilemonClass' WindowName: ''
ClassName: 'pediy06' WindowName: ''

Modifies settings of Windows Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoControlPanel' = '00000001'

Modifies file system :

Creates the following files:

%CommonProgramFiles%\SpeechEngines\Microsoft\Lexicon\1033\r1033tts.lxa.new
%CommonProgramFiles%\SpeechEngines\Microsoft\spcommon.dll.new
%CommonProgramFiles%\SpeechEngines\Microsoft\TTS\1033\sam.sdf.new
%CommonProgramFiles%\SpeechEngines\Microsoft\Lexicon\1033\ltts1033.lxa.new
%CommonProgramFiles%\MSSoap\Binaries\mssoap1.dll.new
%CommonProgramFiles%\MSSoap\Binaries\Resources\1033\mssoapr.dll.new
%CommonProgramFiles%\MSSoap\Binaries\wisc10.dll.new
%CommonProgramFiles%\System\ado\msado20.tlb.new
%CommonProgramFiles%\System\ado\msado21.tlb.new
%CommonProgramFiles%\System\ado\msado25.tlb.new
%CommonProgramFiles%\System\ado\msado15.dll.new
%CommonProgramFiles%\SpeechEngines\Microsoft\TTS\1033\sam.spd.new
%CommonProgramFiles%\SpeechEngines\Microsoft\TTS\1033\spttseng.dll.new
%CommonProgramFiles%\System\ado\msader15.dll.new
%CommonProgramFiles%\Microsoft Shared\MSInfo\ieinfo5.ocx.new
%CommonProgramFiles%\Microsoft Shared\MSInfo\msinfo32.exe.new
%CommonProgramFiles%\Microsoft Shared\Speech\1033\spcplui.dll.new
%CommonProgramFiles%\Microsoft Shared\DAO\dao360.dll.new
C:\УрТн.bat
C:\1.bat
C:\cc.ico
%CommonProgramFiles%\Microsoft Shared\Triedit\triedit.dll.new
%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll.new
%CommonProgramFiles%\Microsoft Shared\web server extensions\40\bin\fp4autl.dll.new
%CommonProgramFiles%\Microsoft Shared\Triedit\dhtmled.ocx.new
%CommonProgramFiles%\Microsoft Shared\Speech\sapi.cpl.new
%CommonProgramFiles%\Microsoft Shared\Speech\sapi.dll.new
%CommonProgramFiles%\Microsoft Shared\Speech\sapisvr.exe.new