Attention: We will be transitioning to a new AAD or Microsoft Entra ID from the week of May 20, 2024. In case your tenant requires admin consent, please refer to this document located at Overview of user and admin consent - Microsoft Entra ID | Microsoft Learn and grant access to App ID: 6ba09155-cb24-475b-b24f-b4e28fc74365 with graph permissions for Directory.Read.All and User.Read for continued access.
We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
Worm:Win32/Bropia.G
Detected by Microsoft Defender Antivirus
Aliases: WORM_BROPIA.J (Trend Micro)
Summary
Win32/Bropia.G.worm is a worm that targets computers running certain versions of Microsoft Windows. The worm spreads and is activated when a user opens a file that is sent through MSN Messenger or Windows Messenger. The worm drops Trojan:Win32/Pakes.C when it runs.
To manually recover from infection by Win32/Bropia.G.worm, perform the following steps:
-
Disconnect from the Internet.
-
Restart your computer in safe mode.
-
End the worm process.
- Delete the worm files from your computer.
-
Delete the worm registry entry.
-
Restart your computer.
-
Take steps to prevent re-infection.
Disconnect from the Internet
To help ensure that your computer is not actively infecting other computers, disconnect it from the Internet before proceeding. Print this Web page or save a copy on your computer; then unplug your network cable and disable your wireless connection. You can reconnect to the Internet after completing these steps.
Restart your computer in safe mode
To start your computer in safe mode
-
Remove all floppy disks and CDs from your computer, and then restart your computer.
-
When prompted, press F8. If Windows starts without displaying the Please select the operating system to start menu, restart your computer. Press F8 after the firmware POST process completes, but before Windows displays graphical output.
-
From the Windows Advanced Options menu, select a safe mode option.
End the worm process
Ending the worm process will help stop your computer from infecting other computers as well as resolve the crashing, rebooting, and performance degradation issues caused by the worm.
To end the worm process
-
Press CTRL+ALT+DEL once and click Task Manager.
-
Click Processes and click Image Name to sort the running processes by name.
-
Select the process Unregmp.exe, and click End Process.
Delete the worm files from your computer
To delete the worm files from your computer
-
Click Start, and click Run.
-
In the Open field, type %SystemDrive%
-
Click OK.
-
Click Name to sort files by name.
-
Delete any of the following file names that appear in the list:
ME!.pif
Webcam.pif
Meverydrunk.pif
me_2005.pif
sisnme.pif -
On the Desktop, right-click the Recycle Bin and click Empty Recycle Bin.
-
Click Yes.
Delete the worm registry entry
To delete the worm registry entry
-
On the Start menu, click Run.
-
Type regedit and click OK.
-
In the left pane, navigate to the key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run -
In the right pane, right-click the following value, if it exists: Unregmp.exe
-
Click Delete and click Yes to delete the value.
- Close the Registry Editor.
Restart your computer
To restart your computer
-
On the Start menu, click Shut Down.
-
Select Restart from the drop-down list and click OK.
Take steps to prevent re-infection
Do not reconnect your computer to the Internet until the computer is protected from re-infection. See the "Preventing Infection" section for more information.