Content

NTRootKit-J!58F4C9BD

Type
Trojan
SubType
Rootkit
Discovery Date
07/21/2008
Length
Varies
Minimum DAT
5345 (07/23/2008)
Updated DAT
5345 (07/23/2008)
Minimum Engine
5.1.00
Description Added
07/21/2008
Description Modified
07/21/2008 9:56 PM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

Tab Navigation

Characteristics

Once execute ,it will copy itself to the following and delete the original:

  • %windir%\system32\sysrest32.exe

Drop the following file :

  • %windir%\system32\sysrest.sys

(where %WinDir% is the default Windows directory, for example C:\WINNT, C:\WINDOWS etc.)

The following NTXXX functions are replaced with pointers to the rootkit code.

  • NtCreateThread
  • NtEnumerateValueKey
  • NtQueryDirectorFile
  • NtQuerySystemInformation

Once the rootkit is loaded, it hides files and processes as specified by the author.

Add the following registry keys :

  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Control\*NewlyCreated*: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Control\ActiveService: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Service: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Legacy: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\ConfigFlags: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Class: "LegacyDriver"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\ClassGUID: "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\DeviceDesc: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\System\Schannel\TypesSupported: 0x00000007
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Enum\0: "Root\LEGACY_SYSREST.SYS\0000"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Enum\Count: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Enum\NextInstance: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Type: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Start: 0x00000003
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\ErrorControl: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\ImagePath: "\??\%WinDir%\system32\sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\DisplayName: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\EventLogging: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Control\*NewlyCreated*: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Control\ActiveService: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Service: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Legacy: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\ConfigFlags: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Class: "LegacyDriver"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\ClassGUID: "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\DeviceDesc: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\NextInstance: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Enum\0: "Root\LEGACY_SYSREST.SYS\0000"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Enum\Count: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Enum\NextInstance: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Type: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Start: 0x00000003
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\ErrorControl: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\ImagePath: "\??\%WinDir%\system32\sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\DisplayName: "sysrest.sys"

Try to access the following remote server :

  • encounter{removed}racker.ws (216.240.139.{removed})

Symptoms

Files and registry changes listed above.

Method of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, email, etc.

Removal

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

Variants

    N/A

All Information

Overview -

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Aliases

  • Trojan:Win32/Tibs.GK (Microsoft)

Characteristics

Characteristics -

Once execute ,it will copy itself to the following and delete the original:

  • %windir%\system32\sysrest32.exe

Drop the following file :

  • %windir%\system32\sysrest.sys

(where %WinDir% is the default Windows directory, for example C:\WINNT, C:\WINDOWS etc.)

The following NTXXX functions are replaced with pointers to the rootkit code.

  • NtCreateThread
  • NtEnumerateValueKey
  • NtQueryDirectorFile
  • NtQuerySystemInformation

Once the rootkit is loaded, it hides files and processes as specified by the author.

Add the following registry keys :

  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Control\*NewlyCreated*: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Control\ActiveService: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Service: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Legacy: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\ConfigFlags: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\Class: "LegacyDriver"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\ClassGUID: "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSREST.SYS\0000\DeviceDesc: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\System\Schannel\TypesSupported: 0x00000007
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Enum\0: "Root\LEGACY_SYSREST.SYS\0000"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Enum\Count: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Enum\NextInstance: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Type: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\Start: 0x00000003
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\ErrorControl: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\ImagePath: "\??\%WinDir%\system32\sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\sysrest.sys\DisplayName: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\EventLogging: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Control\*NewlyCreated*: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Control\ActiveService: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Service: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Legacy: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\ConfigFlags: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\Class: "LegacyDriver"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\ClassGUID: "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\0000\DeviceDesc: "sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSREST.SYS\NextInstance: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Enum\0: "Root\LEGACY_SYSREST.SYS\0000"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Enum\Count: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Enum\NextInstance: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Type: 0x00000001
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\Start: 0x00000003
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\ErrorControl: 0x00000000
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\ImagePath: "\??\%WinDir%\system32\sysrest.sys"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sysrest.sys\DisplayName: "sysrest.sys"

Try to access the following remote server :

  • encounter{removed}racker.ws (216.240.139.{removed})

Symptoms

Symptoms -

Files and registry changes listed above.

Method of Infection

Method of Infection -

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, email, etc.

Removal -

Removal -

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

Variants -

    N/A