TSPY_URELAS.AC

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes the initially executed copy of itself.

Arrival Details

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This spyware drops the following component file(s):

• {malware path}\$$WindowsXp.bat
  • It used to delete the initial malware copy. This file is deleted after execution

It drops the following copies of itself into the affected system:

• %Program Files%\Primary Interop Assemblies\Window system32\MSO\ SH123\ad0002.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

Autostart Technique

This spyware registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\ServiceHost SH123
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ServiceHost SH123
ImagePath = "%Program Files%\Primary Interop Assemblies\Window system32\MSO\ SH123\ad0002.exe"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ServiceHost SH123
Type = "110"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ServiceHost SH123
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ServiceHost SH123
DisplayName = "Remote Access Connection Locate Host SH123_20111108"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ServiceHost SH123
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ServiceHost SH123
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Enum\Root\LEGACY_SERVICEHOST_SH123
NextInstance = "1"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_SERVICEHOST_SH123\
0000\Control
ActiveService = "ServiceHost SH123"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_SERVICEHOST_SH123\
0000
DeviceDesc = "Remote Access Connection Locate Host SH123_20111108"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ServiceHost SH123\Enum
0 = "Root\LEGACY_SERVICEHOST_SH123\0000"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_SERVICEHOST_SH123\
0000
Class = "LegacyDriver"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_SERVICEHOST_SH123\
0000
ConfigFlags = "0"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_SERVICEHOST_SH123\
0000
Legacy = "1"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_SERVICEHOST_SH123\
0000
Service = "ServiceHost SH123"

It starts the following services:

• ServiceName: ServiceHost SH123
  DisplayName: Remote Access Connection Locate Host SH123_20111108
  ImagePath: %Program Files%\Primary Interop Assemblies\Window system32\MSO\ SH123\ad0002.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

Other System Modifications

This spyware adds the following registry keys as part of its installation routine:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ServiceHost SH123

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_SERVICEHOST_SH123

Information Theft

This spyware gathers the following data:

• Game screenshots
• Operating system version
• Computer name

Other Details

This spyware deletes the initially executed copy of itself

NOTES:

This spyware captures screenshots by monitoring the following game-related processes:

• Baduki.exe
• DuelPoker.exe
• HOOLA3.EXE
• LASPOKER.exe
• PMClient.EXE
• highlow2.exe
• poker7.exe

It sends the information it gathers to the following remote site:

• {BLOCKED}.166.177