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Trojan.Siggen31.36467
Added to the Dr.Web virus database:
2025-07-01
Virus description added:
2025-07-03
Technical Information
To ensure autorun and distribution
Modifies the following registry keys
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Broadcom Wireless Manager UI' = '"%CommonProgramFiles%\Microsoft Shared\ink\pl-PL\bcmntray.exe"'
[HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Java(TM) Platform SE Auto Updater' = '"%CommonProgramFiles%\Microsoft Shared\Smart Tag\LISTS\1033\jusched.exe"'
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'AutoUpdate Monitor' = '"%APPDATA%\Thunderbird\Pending Pings\almon.exe"'
[HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'Microsoft Office 2007' = '"%ProgramFiles%\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms5\BCSSync.exe"'
Creates or modifies the following files
<SYSTEM32>\tasks\broadcom wireless manager ui
<SYSTEM32>\tasks\java(tm) platform se auto updater
<SYSTEM32>\tasks\autoupdate monitor
<SYSTEM32>\tasks\microsoft office 2007
<SYSTEM32>\tasks\accessmanager
Sets the following service settings
[HKLM\System\CurrentControlSet\Services\IKEEXT] 'Start' = '00000002'
Malicious functions
Executes the following
'<SYSTEM32>\netsh.exe' firewall set opmode mode=DISABLE
Terminates or attempts to terminate
the following user processes:
Modifies file system
Creates the following files
%APPDATA%\mozilla\firefox\plugin-container.exe
%ALLUSERSPROFILE%\microsoft\windows\start menu\programs\startup\plugin-container.exe
%CommonProgramFiles%\microsoft shared\ink\pl-pl\~xlnhdvm.tmp
%CommonProgramFiles%\microsoft shared\ink\pl-pl\bcmntray.exe
%CommonProgramFiles%\microsoft shared\smart tag\lists\1033\~aicxwpl.tmp
%CommonProgramFiles%\microsoft shared\smart tag\lists\1033\jusched.exe
%APPDATA%\thunderbird\pending pings\~rmyuisx.tmp
%APPDATA%\thunderbird\pending pings\almon.exe
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms5\~uppdnfu.tmp
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms5\bcssync.exe
%ProgramFiles%\msbuild\microsoft\windows workflow foundation\~tenyzif.tmp
%ProgramFiles%\msbuild\microsoft\windows workflow foundation\accessmgr.exe
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms4\formsstyles\lime\~tpjctnf.tmp
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms4\formsstyles\lime\clpsla.exe
Deletes the following files
%APPDATA%\mozilla\firefox\plugin-container.exe
%ALLUSERSPROFILE%\microsoft\windows\start menu\programs\startup\plugin-container.exe
%CommonProgramFiles%\microsoft shared\ink\pl-pl\~xlnhdvm.tmp
%CommonProgramFiles%\microsoft shared\ink\pl-pl\bcmntray.exe
%CommonProgramFiles%\microsoft shared\smart tag\lists\1033\~aicxwpl.tmp
%CommonProgramFiles%\microsoft shared\smart tag\lists\1033\jusched.exe
%APPDATA%\thunderbird\pending pings\~rmyuisx.tmp
%APPDATA%\thunderbird\pending pings\almon.exe
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms5\~uppdnfu.tmp
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms5\bcssync.exe
%ProgramFiles%\msbuild\microsoft\windows workflow foundation\~tenyzif.tmp
%ProgramFiles%\msbuild\microsoft\windows workflow foundation\accessmgr.exe
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms4\formsstyles\lime\~tpjctnf.tmp
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms4\formsstyles\lime\clpsla.exe
Substitutes the following files
%APPDATA%\mozilla\firefox\plugin-container.exe
%ALLUSERSPROFILE%\microsoft\windows\start menu\programs\startup\plugin-container.exe
%CommonProgramFiles%\microsoft shared\ink\pl-pl\bcmntray.exe
%CommonProgramFiles%\microsoft shared\smart tag\lists\1033\jusched.exe
%APPDATA%\thunderbird\pending pings\almon.exe
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms5\bcssync.exe
%ProgramFiles%\msbuild\microsoft\windows workflow foundation\accessmgr.exe
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms4\formsstyles\lime\clpsla.exe
%CommonProgramFiles%\microsoft shared\ink\pl-pl\~xlnhdvm.tmp
%CommonProgramFiles%\microsoft shared\smart tag\lists\1033\~aicxwpl.tmp
%APPDATA%\thunderbird\pending pings\~rmyuisx.tmp
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms5\~uppdnfu.tmp
%ProgramFiles%\msbuild\microsoft\windows workflow foundation\~tenyzif.tmp
%ProgramFiles%\microsoft office\office14\groove\tooldata\groove.net\grooveforms4\formsstyles\lime\~tpjctnf.tmp
Network activity
UDP
'localhost':50124
'localhost':58559
Miscellaneous
Executes the following
'<SYSTEM32>\cmd.exe' /C DIR /A:D /S /B *
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC MINUTE /MO 11 /TN "Broadcom Wireless Manager UI" /TR "\"%CommonProgramFiles%\Microsoft Shared\ink\pl-PL\bcmntray.exe\""
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC MINUTE /MO 21 /TN "Java(TM) Platform SE Auto Updater" /TR "\"%CommonProgramFiles%\Microsoft Shared\Smart Tag\LISTS\1033\jusched.exe\""
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC MINUTE /MO 26 /TN "AutoUpdate Monitor" /TR "\"%APPDATA%\Thunderbird\Pending Pings\almon.exe\""
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC MINUTE /MO 9 /TN "Microsoft Office 2007" /TR "\"%ProgramFiles%\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms5\BCSSync.exe\""
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC ONLOGON /TN "AccessManager" /TR "\"%ProgramFiles%\MSBuild\Microsoft\Windows Workflow Foundation\AccessMgr.exe\""
'<SYSTEM32>\cmd.exe' /C DIR /A:D /S /B *' (with hidden window)
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC MINUTE /MO 11 /TN "Broadcom Wireless Manager UI" /TR "\"%CommonProgramFiles%\Microsoft Shared\ink\pl-PL\bcmntray.exe\""' (with hidden window)
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC MINUTE /MO 21 /TN "Java(TM) Platform SE Auto Updater" /TR "\"%CommonProgramFiles%\Microsoft Shared\Smart Tag\LISTS\1033\jusched.exe\""' (with hidden window)
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC MINUTE /MO 26 /TN "AutoUpdate Monitor" /TR "\"%APPDATA%\Thunderbird\Pending Pings\almon.exe\""' (with hidden window)
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC MINUTE /MO 9 /TN "Microsoft Office 2007" /TR "\"%ProgramFiles%\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms5\BCSSync.exe\""' (with hidden window)
'<SYSTEM32>\schtasks.exe' /CREATE /F /SC ONLOGON /TN "AccessManager" /TR "\"%ProgramFiles%\MSBuild\Microsoft\Windows Workflow Foundation\AccessMgr.exe\""' (with hidden window)
'<SYSTEM32>\netsh.exe' firewall set opmode mode=DISABLE' (with hidden window)
Curing recommendations
Windows
macOS
Linux
Android
If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space .
If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
Switch off your device and turn it on as normal.
Find out more about Dr.Web for Android
Download Dr.Web for Android
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