TROJ_KUZZLE.A
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
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. It may be manually installed by a user.
TECHNICAL DETAILS
1,232,896 bytes
EXE
Yes
04 Aug 2017
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.
It may be manually installed by a user.
Installation
This Trojan drops the following files:
- %Program Files%\Notepad2CN\License.txt
- %Program Files%\Notepad2CN\Notepad2.ini
- %Program Files%\Notepad2CN\Notepad2.txt
- %Program Files%\Notepad2CN\Notepad2CN.exe
- %Program Files%\Notepad2CN\skins.db
- %Program Files%\Notepad2CN\uninst.exe
- %Program Files%\Notepad2CN\upsoar.ini
- %Start Menu%\Programs\ÔƼÇÊ ±¾
- %Start Menu%\Programs\ÔƼÇÊ ±¾\жÔØ.lnk
- %Start Menu%\Programs\ÔƼÇÊ ±¾\ÔƼÇÊ ±¾.lnk
- %Desktop%\ÔƼÇÊ ±¾.lnk
- {malware path}\net.dat ← encrypted binary
- {malware path}\setup.dat ← installer for Notepad2CN
- {malware path}\upsoar.ini ← configuration file
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It creates the following folders:
- %Program Files%\Notepad2CN
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://www.{BLOCKED}uazi.com/0/sts.html
- http://www.{BLOCKED}hyk.com/1.dll
- http://www.{BLOCKED}jhf.com/1.dll
It does the following:
- When executed, it will act as a installer for "Notepad2" (a normal text editor). However, using the "-silent" parameter, the file will also drop and execute a malicious binary into the system.
SOLUTION
9.850
13.574.04
04 Aug 2017
13.575.00
05 Aug 2017
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
Identify and terminate files detected as TROJ_KUZZLE.A
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Search and delete these folders
Step 4
Search and delete this file
%Program Files%\Notepad2CN\License.txt
%Program Files%\Notepad2CN\Notepad2.ini
%Program Files%\Notepad2CN\Notepad2.txt
%Program Files%\Notepad2CN\Notepad2CN.exe
%Program Files%\Notepad2CN\skins.db
%Program Files%\Notepad2CN\uninst.exe
%Program Files%\Notepad2CN\upsoar.ini
%Start Menu%\Programs\ÔƼÇʱ¾
%Start Menu%\Programs\ÔƼÇʱ¾\жÔØ.lnk
%Start Menu%\Programs\ÔƼÇʱ¾\ÔƼÇʱ¾.lnk
%Desktop%\ÔƼÇʱ¾.lnk
{malware path}\net.dat
{malware path}\setup.dat
{malware path}\upsoar.ini
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_KUZZLE.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.
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