Backdoor.Win32.NETWIRED.FAY
Backdoor.Win32.NetWiredRC.kcy (KASPERSKY); Trojan.Inject (IKARUS)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Backdoor
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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.
It executes commands from a remote malicious user, effectively compromising the affected system.
It steals certain information from the system and/or the user.
TECHNICAL DETAILS
993,319 bytes
EXE
Yes
28 Jan 2020
Drops files, Connects to URLs/IPs, Logs keystrokes, Steals information
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 files:
- %AppDataLocal%\Temp\Btfpp.lnk
- %AppDataLocal%\Temp\Btfpp\Jgog.png
- %AppDataLocal%\Temp\Btfpp\Jgoggug.exe
- %Public%\Nex.jpeg
- %User Profile%\Jgog\Jgogasx.exe
- %User Profile%\Jgog\Jgogwen.vbs
- %User Profile%\Jgog\Jgog_eno.hta
- %Public%\Clean.bat
- %Public%\SSPICLI.dll
- %Public%\perfmon.exe
- %Public%\Runex.bat
- %System%\perfmon.exe
- %System%\SSPICLI.dll
(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It adds the following processes:
- %AppDataLocal%\Temp\Btfpp\Jgoggug.exe
- cmd /c ""%Public%\Runex.bat" "
(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.)
It creates the following folders:
- %User Profile%\Jgog
- %AppData%\Logs
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- Jgog
- hxXHmJQu
It injects threads into the following normal process(es):
- %System%\TapiUnattend.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
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\RunOnce
Jgog = %User Profile%\Jgog\Jgog_eno.hta
Other System Modifications
This Backdoor adds the following registry entries:
HKEY_CURRENT_USER\Software\NetWire
HostId = Yecg2INK
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\-
StubPath = ""
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Lists running processes
- List drive information
- List TCP and UDP listening ports
- Get current window information
- Perform keylogging routine
- Get current IE Proxy Configuration
- Open specific files
- Get Logon sessions
- Access SQLite database
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- checker.rneik{BLOCKED}.com:11012
Dropping Routine
This Backdoor drops the following file(s), which it uses for its keylogging routine:
- %AppData%\Logs\{Current Date}
Information Theft
This Backdoor steals the following information:
- Credentials in the following protocol:
- POP3
- IMAP
- HTTP
- SMTP
- EAS
- System Information:
- Computer Name
- Current User Name
- OS Version
- Product Version
- Processor Information
It attempts to get stored information such as user names, passwords, and hostnames from the following browsers:
- Opera
- Internet Explorer
- Purple
- Google Chrome
- Chromium
- Comodo Dragon
- Brave
- Mozilla Seamonkey
- Mozilla Thunderbird
It attempts to steal stored email credentials from the following:
- Microsoft Outlook
SOLUTION
9.850
15.648.03
28 Jan 2020
15.649.00
29 Jan 2020
Step 1
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 2
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 3
Restart in Safe Mode
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\RunOnce
- Jgog = %User Profile%\Jgog\Jgog_eno.hta
- Jgog = %User Profile%\Jgog\Jgog_eno.hta
Step 5
Delete this registry key
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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.
- In HKEY_CURRENT_USER\Software
- NetWire
- NetWire
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components
- -
- -
Step 6
Search and delete these files
- %AppDataLocal%\Temp\Btfpp.lnk
- %AppDataLocal%\Temp\Btfpp\Jgog.png
- %AppDataLocal%\Temp\Btfpp\Jgoggug.exe
- %Public%\Nex.jpeg
- %User Profile%\Jgog\Jgogasx.exe
- %User Profile%\Jgog\Jgogwen.vbs
- %User Profile%\Jgog\Jgog_eno.hta
- %Public%\Clean.bat
- %Public%\SSPICLI.dll
- %Public%\perfmon.exe
- %Public%\Runex.bat
- %System%\perfmon.exe
- %System%\SSPICLI.dll
- %AppData%\Logs\{Current Date}
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Backdoor.Win32.NETWIRED.FAY. 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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