Trojan-Downloader:W32/Agent.BOM

Classification

Category:Malware

Type:Trojan-Downloader

Platform:W32

Aliases:

Trojan-Downloader:W32/Agent.BOM

Summary

Trojan-Downloader:W32/Agent.BOM attempts to download and install other malware into the system.

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.

Technical Details

Once Trojan-Downloader:W32/Agent.BOM has been executed, it will drop a copy of itself in the following folder:

%temp%\RAVWM.EXE

It also drops the following DLL component in the Windows system directory:

%sysdir%\RAVWM425.dll

Trojan-Downloader:W32/Agent.BOM add itself a service to enable its automatic execution upon boot up.

This is done by adding the following registry entries:

HKLM\SYSTEM\CurrentControlSet\Services\WinWMServiceNow DisplayName "WinWMServiceNow" ImagePath %Temp%\RAVWM.EXE ObjectName "LocalSystem" Type dword:00000010 Start dword:00000002 ErrorControl dword:00000000

The DLL component of Trojan-Downloader:W32/Agent.BOM is injected to LSASS.EXE, and is capable of downloading spyware programs and as well sending sensitive information.