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Win32.HLLW.Autoruner.54508
Added to the Dr.Web virus database:
2011-07-18
Virus description added:
2011-07-18
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'tmp4.tmp.exe' = '%ALLUSERSPROFILE%\Application Data'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe <SYSTEM32>\csmm.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'svchost.exe' = '%APPDATA%\Microsoft\svchost.exe'
Creates the following files on removable media:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\svchost.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
Command Prompt (CMD)
Windows Task Manager (Taskmgr)
Registry Editor (RegEdit)
blocks the following features:
User Account Control (UAC)
Creates and executes the following:
%TEMP%\tmp4.tmp.exe
<SYSTEM32>\csmm.exe
%APPDATA%\Microsoft\svchost.exe
%TEMP%\tmp1.tmp.exe
%TEMP%\tmp2.tmp.exe
%TEMP%\tmp3.tmp.exe
Executes the following:
<SYSTEM32>\net1.exe stop Norton Antivirus Auto Protect Service
<SYSTEM32>\net.exe stop mcshield
<SYSTEM32>\net1.exe user 14 /add
<SYSTEM32>\net1.exe stop mcshield
<SYSTEM32>\net1.exe user 12 /add
<SYSTEM32>\net1.exe user 11 /add
<SYSTEM32>\net.exe stop Norton Antivirus Auto Protect Service
<SYSTEM32>\net1.exe user 13 /add
<SYSTEM32>\net1.exe user 15 /add
<SYSTEM32>\net1.exe user 21 /add
<SYSTEM32>\net1.exe user 20 /add
<SYSTEM32>\net1.exe user 23 /add
<SYSTEM32>\net1.exe user 22 /add
<SYSTEM32>\net1.exe user 17 /add
<SYSTEM32>\net1.exe user 16 /add
<SYSTEM32>\net1.exe user 19 /add
<SYSTEM32>\net1.exe user 18 /add
<SYSTEM32>\net1.exe user 10 /add
<SYSTEM32>\notepad.exe
<SYSTEM32>\net1.exe stop FireSvc
<SYSTEM32>\net1.exe user 2 /add
<SYSTEM32>\net1.exe user 1 /add
<SYSTEM32>\net.exe stop SharedAccess
%WINDIR%\explorer.exe
<SYSTEM32>\net1.exe stop SharedAccess
<SYSTEM32>\net.exe stop FireSvc
<SYSTEM32>\taskkill.exe /f /im notepad.exe
<SYSTEM32>\net1.exe user 7 /add
<SYSTEM32>\net1.exe user 6 /add
<SYSTEM32>\net1.exe user 9 /add
<SYSTEM32>\net1.exe user 8 /add
<SYSTEM32>\net1.exe user 3 /add
<SYSTEM32>\taskkill.exe /f /im wordpad.exe
<SYSTEM32>\net1.exe user 5 /add
<SYSTEM32>\net1.exe user 4 /add
Modifies settings of Windows Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000002'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoViewOnDrive' = '03FFFFFF'
Hides the following processes:
<SYSTEM32>\taskkill.exe
<SYSTEM32>\net1.exe
Modifies file system :
Creates the following files:
<SYSTEM32>\csmm.exe
%TEMP%\tmp4.tmp.exe
%ALLUSERSPROFILE%\Application Datatmp4.tmp.exe
<SYSTEM32>\sxmm.dll
%TEMP%\tmp2.tmp.exe
%TEMP%\tmp1.tmp.exe
%APPDATA%\Microsoft\svchost.exe
%TEMP%\tmp3.tmp.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\svchost.exe
%APPDATA%\Microsoft\svchost.exe
Network activity:
Connects to:
'da####t.no-ip.info':1604
'da####t.no-ip.info':3085
UDP:
DNS ASK da####t.no-ip.info
Miscellaneous:
Searches for the following windows:
ClassName: '' WindowName: 'Windows Media Player'
ClassName: '' WindowName: 'System Configuration Utility'
ClassName: '#32770' WindowName: 'Form1'
ClassName: '' WindowName: ''
ClassName: '' WindowName: 'Group Policy'
ClassName: '' WindowName: 'Calculator'
ClassName: 'BUTTON' WindowName: ''
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: 'Indicator' WindowName: ''
ClassName: 'SysListView32' WindowName: ''
ClassName: '#32770' WindowName: ''
ClassName: '#32770' WindowName: 'Program Manager'
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