TROJ_NEOP.FUV
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
15,360 bytes
EXE
No
19 Mar 2014
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This Trojan modifies the following file(s):
- %Application Data%\GDIPFONTCACHEV1.DAT
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It deletes the following files:
- %Windows%\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.168.37218
- %Windows%\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.168.37218
- %User Profile%\v2.0.50727.42\security.config.cch.168.37359
(Note: %Windows% is the Windows folder, which is usually C:\Windows.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.dll = "txtfile"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.exe = "pngfile"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.vbs = "Visual Style"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.reg = "xmlfile"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.txt = "regfile"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.mp3 = "txtfile"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.xml = "txtfile"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.png = "txtfile"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.exe = "batfile"
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
GDIPlus
FontCachePath = "%Application Data%"
(Note: The default value data of the said registry entry is %User Profile%\Local Settings\Application Data.)
This report is generated via an automated analysis system.
SOLUTION
9.300
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
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_LOCAL_MACHINE\SOFTWARE\Classes
- .dll = "txtfile"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- .exe = "pngfile"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- .vbs = "Visual Style"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- .reg = "xmlfile"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- .txt = "regfile"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- .mp3 = "txtfile"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- .xml = "txtfile"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- .png = "txtfile"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- .exe = "batfile"
Step 3
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\GDIPlus
- From: FontCachePath = "%Application Data%"
To: FontCachePath = ""%User Profile%\Local Settings\Application Data""
- From: FontCachePath = "%Application Data%"
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_NEOP.FUV. 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.
Step 5
Restore deleted/modified files and/or registry entries from backup
*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- %Application Data%\GDIPFONTCACHEV1.DAT
Step 6
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %Windows%\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.168.37218
- %Windows%\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.168.37218
- %User Profile%\v2.0.50727.42\security.config.cch.168.37359
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