Backdoor.Win32.NETWIRED.FAG
Trojan.Win32.VBKryjetor.cogi(KASPERSKY); W32/FareitVB.DYMQ!tr(FORTINET); a variant of Win32/Injector.EJCZ trojan(NOD32)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Backdoor 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
Arrival Details
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Backdoor drops the following copies of itself into the affected system:
- %Application Data%\Install\Host.exe
(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It adds the following processes:
- %Application Data%\Install\Host.exe
(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Autostart Technique
This Backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
NetWire = %Application Data%\Install\Host.exe
Other System Modifications
This Backdoor adds the following registry entries as part of its installation routine:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{2P8QKR84-PM04-00CF-8U6P-61AD5237EI1Q}
StubPath = "%Application Data%\Install\Host.exe"
HKEY_CURRENT_USER\Software\NetWire
HostId = work
HKEY_CURRENT_USER\Software\NetWire
Install Date = {date executed}
SOLUTION
Step 1
Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:
- Troj.Win32.TRX.XXPE50FFF033
Step 2
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 3
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 4
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\Software\Microsoft\Windows\CurrentVersion\Run
- NetWire = %Application Data%\Install\Host.exe
- NetWire = %Application Data%\Install\Host.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{2P8QKR84-PM04-00CF-8U6P-61AD5237EI1Q}
- StubPath = "%Application Data%\Install\Host.exe"
- StubPath = "%Application Data%\Install\Host.exe"
- In HKEY_CURRENT_USER\Software\NetWire
- HostId = work
- HostId = work
- In HKEY_CURRENT_USER\Software\NetWire
- Install Date = {date executed}
- Install Date = {date executed}
Step 5
Search and delete this file
- %Application Data%\Install\Host.exe
Step 6
Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win32.NETWIRED.FAG. 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 the following Trend Micro Support pages for more information:
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