Christopher Daniel So
Generic.dx!bf3t (McAfee), Trojan-Ransom.Win32.PornoAsset.acal (Kaspersky), Mal/Ransom-Z (Sophos), Trojan.Win32.Generic!BT (Sunbelt)
Windows 2000, Windows XP, Windows Server 2003
29 Sep 2012
29 Sep 2012
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Remove the malware/grayware file that dropped/downloaded TROJ_RANSOM.CMY
Remove malware files dropped/downloaded by TROJ_RANSOM.CMY
Since this malware uses rootkit technology, detection and removal using normal and safe mode methods may not eliminate it completely. This procedure restarts the system using the Windows Recovery Console.
Restore this modified registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
Restoring Deleted Registry Keys
Scan your computer with your Trend Micro product to delete files detected as TROJ_RANSOM.CMY. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
Before performing step 3, do the following step:
Upon starting the system from Recovery Console, a command prompt window appears instead of the taskbar. In the command prompt window, type the following:
regedit & start cmd & exit
This opens the Registry Editor and another command prompt window while closing the first one.
After performing step 3, type the following in the command prompt window:
ren explorer.tmp explorer.exe