Cris Nowell Pantanilla
Backdoor.Win32.ZAccess.ob (Kaspersky) Trojan.Zeroaccess (Symantec)
Windows 2000, Windows XP, Windows Server 2003
This Trojan may be dropped by other malware.
It is a component of other malware.
It does not have any propagation routine.
It does not have any backdoor routine.
It does not have any downloading capability.
It does not have any information-stealing capability.
22 Sep 2011
This Trojan may be dropped by the following malware:
This Trojan is a component of other malware.
This Trojan does not have any propagation routine.
This Trojan does not have any backdoor routine.
This Trojan does not have any downloading capability.
This Trojan does not have any information-stealing capability.
This malware does not have rootkit capabilities.
It prevents the system from executing EXE files by monitoring the ntdll.ZwCreateFile API. Once a file is executed, it blocks the file and display a message similar to the one below:
This prevents the user to run programs in the compromised system.
This malware does not exploit any vulnerability.
04 Oct 2011
05 Oct 2011
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.
Scan your computer with your Trend Micro product to delete files detected as TROJ_FAKEAL.K. 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.