PUP.Optional.GlobalSystemMechanic

Short bio

PUP.Optional.GlobalSystemMechanic is the Malwarebytes detection name for a potentially unwanted system optimizer called Global System Mechanic targeting Windows systems. These so-called system optimizers use intentional false positives to convince users that their systems have problems. They then try to sell you their software, claiming it will remove these problems. This PUP is part of a family that creates a subfolder in Program Files called {name of PUP} on %computername% where %computername% is an environmental variable.

GUI Global System Mechanic

the GUI for Global System Mechanic

Symptoms

Global System Mechanic uses Windows Scheduled Tasks to gain persistence. It creates a scheduled task that will run the program at the login of any user. Users may see the icon in the taskbar, start menu, or on their desktop.

Scheduled Task

Scheduled Task for Global System Mechanic

icons

Type and source of infection

PUP.Optional.GlobalSystemMechanic is usually installed by users themselves from the software vendors’ own sites or or other websites that scare users into thinking their system is infected.

fake online scanner

example of a site scaring visitors into thinking their system is infected

Aftermath

Programs like this might give users a false sense of security and possibly expose them to malware infections. Users should be aware that the telephone numbers displayed by the programs in this family have been found to act as tech support scammers.

Protection

Malwarebytes blocks the installation of Global System Mechanic by detecting the installer and blocking the websites that spread and sell this software.

blocking installer

Malwarebytes blocks the install of this PUP

block scare site

Malwarebytes blocks the sites that try to scare the visitors into installing this PUP

Remediation

Malwarebytes can detect and remove PUP.Optional.GlobalSystemMechanic without further user interaction.

  1. Please download Malwarebytes to your desktop.
  2. Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  3. Then click Finish.
  4. Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  5. If another update of the definitions is available, it will be implemented before the rest of the scanning procedure.
  6. When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  7. Restart your computer when prompted to do so.

Malwarebytes removal log

A Malwarebytes log of removal will look similar to this:

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 2/12/18
Scan Time: 8:36 AM
Log File: 786c9ac4-0fc7-11e8-9439-080027750297.json
Administrator: Yes

-Software Information-
Version: 3.3.1.2183
Components Version: 1.0.262
Update Package Version: 1.0.3921
License: Premium

-System Information-
OS: Windows 7 Service Pack 1
CPU: x64
File System: NTFS
User: {computername}\{username}

-Scan Summary-
Scan Type: Threat Scan
Result: Completed
Objects Scanned: 242159
Threats Detected: 68
Threats Quarantined: 68
Time Elapsed: 4 min, 17 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 1
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\oscm.exe, Quarantined, [1714], [489253],1.0.3921

Module: 7
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\x64\SQLite.Interop.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\Interop.IWshRuntimeLibrary.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\Microsoft.TeamFoundation.Common.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\Microsoft.Win32.TaskScheduler.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\oscm.exe, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\System.Data.SQLite.DLL, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\TAFactory.IconPack.dll, Quarantined, [1714], [489253],1.0.3921

Registry Key: 8
PUP.Optional.GlobalSystemMechanic, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TREE\Global System Mechanic_Logon, Quarantined, [1714], [489259],1.0.3921
PUP.Optional.GlobalSystemMechanic, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TASKS\{C4D882AC-DC78-4C0F-8BD0-6B462CDBD56D}, Quarantined, [1714], [489259],1.0.3921
PUP.Optional.GlobalSystemMechanic, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\LOGON\{C4D882AC-DC78-4C0F-8BD0-6B462CDBD56D}, Quarantined, [1714], [489259],1.0.3921
PUP.Optional.GlobalSystemMechanic, HKLM\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\{9A5335DA-0F54-495A-8FE9-9370C8A4136E}_is1, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, HKCU\SOFTWARE\Global System Mechanic on {computername}, Quarantined, [1714], [489255],1.0.3921
PUP.Optional.MasterPCCleaner, HKLM\SOFTWARE\aHR0cDovL3d3dy53aXNlc3lzdGVtdG9vbHMuY29tLw==, Quarantined, [4464], [440348],1.0.3921
PUP.Optional.GlobalSystemMechanic, HKLM\SOFTWARE\Global System Mechanic on {computername}, Quarantined, [1714], [489254],1.0.3921
PUP.Optional.MasterPCCleaner, HKLM\SOFTWARE\SPCT-PR, Quarantined, [4464], [484509],1.0.3921

Registry Value: 4
PUP.Optional.GlobalSystemMechanic, HKCU\SOFTWARE\Global System Mechanic on {computername}|REFERURL, Quarantined, [1714], [489255],1.0.3921
PUP.Optional.GlobalSystemMechanic, HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TASKS\{C4D882AC-DC78-4C0F-8BD0-6B462CDBD56D}|PATH, Quarantined, [1714], [489261],1.0.3921
PUP.Optional.GlobalSystemMechanic, HKLM\SOFTWARE\Global System Mechanic on {computername}|PURCHASEURL, Quarantined, [1714], [489254],1.0.3921
PUP.Optional.MasterPCCleaner, HKLM\SOFTWARE\SPCT-PR|PXL, Quarantined, [4464], [484509],1.0.3921

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 8
PUP.Optional.GlobalSystemMechanic, C:\Users\{username}\AppData\Roaming\Global System Mechanic on {computername}\smico, Quarantined, [1714], [489249],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\USERS\{username}\APPDATA\ROAMING\Global System Mechanic on {computername}, Quarantined, [1714], [489249],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\PROGRAMDATA\MICROSOFT\WINDOWS\START MENU\PROGRAMS\Global System Mechanic on {computername}, Quarantined, [1714], [489250],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\PROGRAMDATA\Global System Mechanic on {computername}, Quarantined, [1714], [489248],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\x64, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\x86, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\PROGRAM FILES\Global System Mechanic on {computername}, Quarantined, [1714], [489253],1.0.3921

File: 40
PUP.Optional.GlobalSystemMechanic, C:\WINDOWS\SYSTEM32\TASKS\Global System Mechanic_Logon, Quarantined, [1714], [489259],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\USERS\{username}\APPDATA\ROAMING\Global System Mechanic on {computername}\Errorlog.txt, Quarantined, [1714], [489249],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Users\{username}\AppData\Roaming\Global System Mechanic on {computername}\exlist.bin, Quarantined, [1714], [489249],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Users\{username}\AppData\Roaming\Global System Mechanic on {computername}\param.ini, Quarantined, [1714], [489249],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Users\{username}\AppData\Roaming\Global System Mechanic on {computername}\res.xml, Quarantined, [1714], [489249],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\PROGRAMDATA\MICROSOFT\WINDOWS\START MENU\PROGRAMS\Global System Mechanic on {computername}\Buy Global System Mechanic.lnk, Quarantined, [1714], [489250],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Global System Mechanic on {computername}\Global System Mechanic.lnk, Quarantined, [1714], [489250],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Global System Mechanic on {computername}\Uninstall Global System Mechanic.lnk, Quarantined, [1714], [489250],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\PROGRAMDATA\Global System Mechanic on {computername}\mpc.db, Quarantined, [1714], [489248],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\PROGRAM FILES\Global System Mechanic on {computername}\unins000.msg, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\danish_apc_da.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\Dutch_apc_nl.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\english_apc_en.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\finish_apc_fi.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\French_apc_fr.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\german_apc_de.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\italian_apc_it.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\japanese_apc_ja.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\norwegian_apc_no.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\portuguese_apc_ptbr.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\russian_apc_ru.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\spanish_apc_es.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\langs\swedish_apc_sv.ini, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\x64\SQLite.Interop.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\x86\SQLite.Interop.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\AppRes.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\HtmlRenderer.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\HtmlRenderer.WinForms.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\Interop.IWshRuntimeLibrary.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\Microsoft.TeamFoundation.Common.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\Microsoft.Win32.TaskScheduler.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\oscm.exe, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\oscm.exe.config, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\System.Data.SQLite.DLL, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\TAFactory.IconPack.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\TaskScheduler.dll, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\unins000.dat, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\Program Files\Global System Mechanic on {computername}\unins000.exe, Quarantined, [1714], [489253],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\USERS\PUBLIC\DESKTOP\GLOBAL SYSTEM MECHANIC.LNK, Quarantined, [1714], [489251],1.0.3921
PUP.Optional.GlobalSystemMechanic, C:\USERS\{username}\DESKTOP\GSMSETUP.EXE, Quarantined, [1714], [489247],1.0.3921

Physical Sector: 0
(No malicious items detected)

(end)

Add to exclusions

Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.

The Exclusions tab includes a list of items to be excluded from scans. The items may include files, folders, websites, or applications that connect to the Internet, as well as previously detected exploits.

To access the exclusions in Malwarebytes:

  • Click on the Settings tab in the left pane.
  • Click on the Exclusions tab.
  • Click the Add Exclusion button.
  • Select the exclusion type Exclude a File or Folder and use the Browse button to select the main folder for the software that you wish to keep.
  • Repeat this for any secondary folder(s) that belong to the software.
  • If you want to allow the program to connect to the internet, for example to fetch updates, add an exclusion of the type Exclude an application that Connects to the Internet and use the Browse button to select the file you wish to grant access.

Traces/IOCs

Possible signs in FRST logs:

() C:\Program Files\Global System Mechanic on {computername}\oscm.exe
C:\Users\{username}\AppData\Roaming\Global System Mechanic on {computername}
C:\Windows\System32\Tasks\Global System Mechanic_Logon
C:\Users\Public\Desktop\Global System Mechanic.lnk
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Global System Mechanic on {computername}
C:\ProgramData\Global System Mechanic on {computername}
C:\Program Files\Global System Mechanic on {computername}

Global System Mechanic (HKLM\…\{9A5335DA-0F54-495A-8FE9-9370C8A4136E}_is1) (Version: 1.0.0.1343 – )
Task: {C4D882AC-DC78-4C0F-8BD0-6B462CDBD56D} – System32\Tasks\Global System Mechanic_Logon => C:\Program Files\Global System Mechanic on {computername}\oscm.exe [2018-01-31] ()

File: oscm.exe

Domains: wisesystemtools.com, pcvark.com

 

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