Technical Information
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\Roaming\AHDATZ.exe' = '%APPDATA%\Roaming\AHDATZ.exe:*:Enabled:Windows Messanger'
- [<HKLM>\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:Windows Messanger'
- [<HKLM>\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
Executes the following:
- '<SYSTEM32>\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\Roaming\AHDATZ.exe" /t REG_SZ /d "%APPDATA%\Roaming\AHDATZ.exe:*:Enabled:Windows Messanger" /f
- '<SYSTEM32>\wermgr.exe' -queuereporting
- '<SYSTEM32>\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "<Full path to virus>" /t REG_SZ /d "<Full path to virus>:*:Enabled:Windows Messanger" /f
- '<SYSTEM32>\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
Modifies file system :
Creates the following files:
- %APPDATA%\Roaming\AHDATZ.exe
- %APPDATA%\Roaming\l
- %TEMP%\autA41B.tmp
- %TEMP%\m987584.rcf
Deletes the following files:
- %TEMP%\autA41B.tmp
Network activity:
UDP:
- DNS ASK 6r####p.no-ip.biz
- DNS ASK 5r####p.no-ip.biz
- DNS ASK 7r####p.no-ip.biz
- DNS ASK 9r####p.no-ip.biz
- DNS ASK 8r####p.no-ip.biz
- DNS ASK 4r####p.no-ip.biz
- DNS ASK dn#.##ftncsi.com
- DNS ASK ro####.no-ip.biz
- DNS ASK 1r####p.no-ip.biz
- DNS ASK 3r####p.no-ip.biz
- DNS ASK 2r####p.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'