Regarding your concern, I would like to give you these valuable info and available (manual) solutions on this virus. Just be prudent enough in opening your e-mails especially those that have attachments. If you suspect that these are infected, "Do not" open them.

TROJ_SIRCAM.A

Aliases:
SCAM.A, TROJ_SCAM.A, W32.Sircam.Worm@mm

Description: TROJ_SIRCAM.A has now been upgraded to HIGH RISK. This worm propagates via email using SMTP commands. It sends copies of itself to all addresses listed in an infected user's address book, and arrives in an email with a random subject line and an attachment by the same name. It also propagates via shared network drives.

1. If you are connected to the network, remove the connection to the network.
2. Find and Rename REGEDIT.EXE to REGEDIT.COM.
   Click the Start button on the taskbar.
   Select Find.... select and click Files or Folders...
   On the Named edit box type REGEDIT.EXE and select Find Now
   Right click on the REGEDIT.EXE icon and select Rename.
3. In the Windows Start menu, choose Run, type Regedit, and press Enter.
4. In the left panel, follow the path:
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServices.
5. On the right panel, look for the registry value Driver32.
6. Click this and press the Delete key.
7. On the left panel, follow the path:
   HKEY_LOCAL_MACHINE\Software\SirCam.
8. Click on SirCam and then press the Delete key.
9. On the left panel, follow the path:
   HKEY_CLASSES_ROOT\exefile\shell\open\command
10. On the right panel, right-click the (Default) value and then choose Modify.
11. Change “C:\Recycled\SirC32.exe””%1”%*” to “%1”%*”.
    In other words, remove “C:\Recycled\SirC32.exe”.