Windows 2000, Windows XP, Windows Server 2003
Dropped by other malware, Downloaded from the Internet
This is the Trend Micro detection for files patched and partially overwritten with malicious code of ZEROACCESS malware family.
This Trojan may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It requires its main component to successfully perform its intended routine.
10 Jul 2012
This Trojan may arrive bundled with malware packages as a malware component.
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
This Trojan requires its main component to successfully perform its intended routine.
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.
Restore a file/s that has/have been corrupted/modified by this malware/grayware
To restore system files:
• For Windows 2000:
(Note: In the example above, D: refers to the CD-ROM drive. If your CD-ROM drive is not D:, please change the letter accordingly. Also, the file to restore is C:\WINNT\System32\explorer.exe.)
• For Windows XP and Windows Server 2003:
Scan your computer with your Trend Micro product to delete files detected as PTCH64_ZACCESS.A. 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.
For Windows Vista and 7, users may also use the System File Checker (SFC) to restore modified files using the following steps:
More information on using System File Checker to repair missing or corrupted system files in Windows are found in the following Microsoft pages: