XFSic infected computers have following symptoms: when opening Microsoft Excel, a new sheet namely "yyyyy" will automatically open.
Following these steps to remove XFSic:
Step 1: Download Bkav AntiXFSic from http://bkav.com.vn/download/BkavAntiXFSic.exe
Step 2: Run Bkav AntiXFSic, in the main Windows, click Chọn thư mục (Browse)
Step 3: In the Browse for Folder Windows, choose excel file folder or disk drive to scan for XFSic, click OK
Step 4: Click Quét virus (Scan)
Before scanning, this tool will automatically create a copy of the original file in Backup folder (in the AntiXFsic.exe file folder). You can use Bkav Restore to restore these files if necessary.