TROJ_CLIKUG.D

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.

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 adds the following folders:

• %Application Data%\Oxy
• %Start Menu%\Programs\Oxy
• %User Temp%\{malware name}Download

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.. %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.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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.)

It drops the following files:

• %Application Data%\Oxy\config.xml
• %Desktop%\PileFile.lnk
• %User Temp%\htmlayout.dll
• %Start Menu%\Programs\Oxy\Uninstall.lnk

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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.. %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.)

It drops the following copies of itself into the affected system:

• %Application Data%\Oxy\oxyinst.exe
• %User Temp%\{malware name}Download\{malware name}.exe

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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.)

Other System Modifications

This Trojan adds the following registry entries:

HKEY_CURRENT_USER\Software\Ascensio System

HKEY_CURRENT_USER\Software\Escolade
GUID = "{value}"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{2A4641B4-EDDB-46D1-B34B-F93E19A8B3DB}
Comments = "Uninstalling PileFile downloader"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{2A4641B4-EDDB-46D1-B34B-F93E19A8B3DB}
DisplayIcon = ""%Application Data%\Oxy\oxyinst.exe",1"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{2A4641B4-EDDB-46D1-B34B-F93E19A8B3DB}
DisplayName = "PileFile downloader"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{2A4641B4-EDDB-46D1-B34B-F93E19A8B3DB}
HelpLink = "www.products-placement.com"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{2A4641B4-EDDB-46D1-B34B-F93E19A8B3DB}
NoModify = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{2A4641B4-EDDB-46D1-B34B-F93E19A8B3DB}
NoRepair = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{2A4641B4-EDDB-46D1-B34B-F93E19A8B3DB}
Publisher = "FINEDREAM INVEST LTD"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{2A4641B4-EDDB-46D1-B34B-F93E19A8B3DB}
UninstallString = ""%Application Data%\Oxy\oxyinst.exe" --elevated --uninstallPileFile"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{9AAF2503-6CD5-414A-B5BA-37639B76C91F}
Comments = "Uninstalling \PileFile setup - 1.0\"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{9AAF2503-6CD5-414A-B5BA-37639B76C91F}
DisplayIcon = ""%Application Data%\Oxy\oxyinst.exe",1"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{9AAF2503-6CD5-414A-B5BA-37639B76C91F}
DisplayName = "Oxy"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{9AAF2503-6CD5-414A-B5BA-37639B76C91F}
HelpLink = "www.products-placement.com"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{9AAF2503-6CD5-414A-B5BA-37639B76C91F}
NoModify = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{9AAF2503-6CD5-414A-B5BA-37639B76C91F}
NoRepair = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{9AAF2503-6CD5-414A-B5BA-37639B76C91F}
Publisher = "FINEDREAM INVEST LTD"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{9AAF2503-6CD5-414A-B5BA-37639B76C91F}
UninstallString = ""%Application Data%\Oxy\oxyinst.exe" --uninstall"

Download Routine

This Trojan connects to the following URL(s) to download its component file(s):

• {BLOCKED}wnloader.com
• www.{BLOCKED}wnload.com
• www.{BLOCKED}-m.com

It saves the files it downloads using the following names:

• %User Temp%\tmp{random}.exe
• %User Temp%\tmp{random}\Bundle.exe

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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.)