TROJ_FAKEAV.FCZ
Windows 98, ME, NT, 2000, XP, Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. However, as of this writing, the said sites are inaccessible.
It deletes itself after execution.
TECHNICAL DETAILS
15,872 bytes
EXE
No
19 Jul 2010
Connects to URLs/Ips, Drops files
Arrival Details
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
However, as of this writing, the said sites are inaccessible.
Other System Modifications
This Trojan adds the following registry keys:
HKEY_CURRENT_USER\Printers\Connections
affid = {random}
HKEY_CURRENT_USER\Printers\Connections
subid = {random}
Dropping Routine
This Trojan drops the following files:
- C:\Documents and Settings\All Users\Favorites\_favdata.dat
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}c-Increases.com/ms05/ad
- http://www.{BLOCKED}dead.com/ms05/ad
- http://www.{BLOCKED}pesearch.com/ms05/ad
It deletes itself after execution.
SOLUTION
8.900
Step 1
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.
Step 2
Delete this 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.
- In HKEY_CURRENT_USER\Printers\Connections
- affid={random}
- affid={random}
- In HKEY_CURRENT_USER\Printers\Connections
- subid={random}
- subid={random}
Step 3
Search and delete these files
- C:\Documents and Settings\All Users\Favorites\_favdata.dat
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_FAKEAV.FCZ. 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.
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