PUA.Win32.SLIMWARE.AA
PUA:Win32/Slimware (Microsoft), a variant of Win32/Slimware.D potentially unwanted (ESET-NOD32)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be manually installed by a user.
TECHNICAL DETAILS
Arrival Details
This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It may be manually installed by a user.
Installation
This Potentially Unwanted Application adds the following folders:
- %Program Files%\SlimCleaner Plus
- %Program Files%\SlimService
(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), 7 (32-bit), and 8 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), 7 (64-bit), and 8 (64-bit).)
It drops the following files:
- %User Temp%\SWI{random}.tmp
- %User Temp%\Cab{random}.tmp
- %User Temp%\Tar{random}.tmp
- %User Temp%\SlimCleanerPlus_en-US_x86_Silent.exe
- %User Temp%\SIOUT{random}\SlimCleanerPlus_en-US_x86.msi
- %AppDataLocal%\Downloaded Installers\{GUID value}\setup.msi
- %Program Files%\SlimCleaner Plus\default.ui
- %Program Files%\SlimCleaner Plus\locales
- %Program Files%\SlimCleaner Plus\main.ui
- %Program Files%\SlimCleaner Plus\mdp.exe
- %Program Files%\SlimCleaner Plus\Open-Source Licenses.txt
- %Program Files%\SlimCleaner Plus\SlimCleanerPlus.exe
- %Program Files%\SlimCleaner Plus\UninstallStub.exe
- %Program Files%\SlimCleaner Plus\default.ui
- %Program Files%\SlimCleaner Plus\locales
- %Program Files%\SlimCleaner Plus\main.ui
- %Program Files%\SlimCleaner Plus\mdp.exe
- %Program Files%\SlimCleaner Plus\Open-Source Licenses.txt
- %Program Files%\SlimCleaner Plus\SlimCleanerPlus.exe
- %Program Files%\SlimCleaner Plus\UninstallStub.exe
- %Desktop\SlimCleaner Plus.lnk
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local on Windows Vista, 7, and 8.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), 7 (32-bit), and 8 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), 7 (64-bit), and 8 (64-bit).)
Autostart Technique
This Potentially Unwanted Application 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\CurrentControlSet\
services\SlimService
Type = "0x00000010"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\SlimService
Start = "0x00000002"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\SlimService
ErrorControl = "0x00000001"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\SlimService
ImagePath = "%Program Files%\SlimService\SlimServiceFactory.exe"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\SlimService
DisplayName = "SlimWare Utility Service Launcher"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\SlimService
DependOnService = "{hex value}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\SlimService
ObjectName = "LocalSystem"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\SlimService
Description = "Services SlimWare Utilities applications and products."
Other System Modifications
This Potentially Unwanted Application adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc\
SlimCleaner Plus
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc\
SlimCleaner Plus\InstallerData
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc\
SlimCleaner Plus\Registration
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SlimCleaner Plus
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc
MachineID = "{hex value}"
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc\
SlimCleaner Plus\InstallerData
ul_stubid = "{GUID value}"
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc\
SlimCleaner Plus\InstallerData
ul_track = "SCP{number}"
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc\
SlimCleaner Plus\Registration
InstallationID = "{hex value}"
Other Details
This Potentially Unwanted Application connects to the following possibly malicious URL:
- http://trk.{BLOCKED}reutilities.com/ulc.php?ev=InstallerInvoked&platformOSVersion={version number}&ul_stubid={GUID value}&installer={installer info}&profuct=SW1&installerVersion=2.4.1&machineId={GUID value}&platformOS=Windows&ul_track=SCP077
- http://trk.{BLOCKED}reutilities.com/ulc.php?ev=InstallerFinished&platformOSVersion={version number}&ul_stubid={GUID value}&installer={installer info}&profuct=SW1&installerVersion=2.4.1&machineId={GUID value}&platformOS=Windows&ul_track=SCP077
- http://stc.{BLOCKED}reutilities.com/gettrack?product=SW1
- http://sf.{BLOCKED}d.com/{hex value}
- http://cdn.{BLOCKED}eaner.com/downloads/scplus/SlimCleanerPlus_en-US_x86_Silent.exe
SOLUTION
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Restart in Safe Mode
Step 4
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE
- SlimWare Utilities Inc
- SlimWare Utilities Inc
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
- SlimCleaner Plus
- SlimCleaner Plus
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services
- SlimService
- SlimService
Step 5
Search and delete this folder
- %Program Files%\SlimCleaner Plus
- %Program Files%\SlimService
Step 6
Search and delete this file
- %User Temp%\SWI{random}.tmp
- %User Temp%\Cab{random}.tmp
- %User Temp%\Tar{random}.tmp
- %User Temp%\SlimCleanerPlus_en-US_x86_Silent.exe
- %User Temp%\SIOUT{random}\SlimCleanerPlus_en-US_x86.msi
- %AppDataLocal%\Downloaded Installers\{GUID value}\setup.msi
- %Desktop\SlimCleaner Plus.lnk
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as PUA.Win32.SLIMWARE.AA. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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