Trojan.Win32.DLOADR.GN

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.

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.

Installation

This Trojan adds the following processes:

• "%System%\WScript.exe" "%Windows%\inf\n.vbs"
• %Windows%\inf\n.vbs
• "%Windows%\inf\c3.bat"
• %Windows%\inf\c3.bat
• net1 user mm123$ /del
• net1 user admin$ /del
• net1 user sysadm05 /del
• net stop AnyDesk
• sc config AnyDesk start= disabled
• attrib -s -h -r %System Root%\Users\Default\AppData\Local\Temp\*.exe
• attrib -s -h -r %System Root%\Users\Default\AppData\Roaming\Tempo\*.exe
• attrib -s -h -r %System Root%\Users\Default\AppData\Roaming\*.exe
• attrib -s -h -r %System Root%\Users\{username}\AppData\Local\Temp\*.exe
• attrib -s -h -r %System Root%\Users\{username}\AppData\Roaming\Tempo\*.exe
• attrib -s -h -r %System Root%\Users\{username}\AppData\Roaming\*.exe
• attrib -s -h -r %User Temp%\*.exe
• attrib -s -h -r %Application Data%\Tempo\*.exe
• attrib -s -h -r %Application Data%\*.exe
• taskkill /f /im help.exe /im doc001.exe /im dhelllllper.exe /im DOC001.exe /im dhelper.exe /im conime.exe /im a.exe /im docv8.exe /im king.exe /im name.exe /im doc.exe /im wodCmdTerm.exe /im win1ogins.exe /im win1ogins.exe /im lsaus.exe /im lsars.exe /im lsacs.exe /im regedit.exe /im lsmsm.exe /im v5.exe /im anydesk.exe /im sqler.exe /im sqlservr.exe /im NsCpuCNMiner64.exe /im NsCpuCNMiner32.exe /im tlscntr.exe /im eter.exe /im lsmo.exe /im lsarr.exe /im convert.exe /im WinSCV.exe /im ctfmonc.exe /im lsmose.exe /im svhost.exe /im secscan.exe /im wuauser.exe /im splwow64.exe /im boy.exe /IM powered.EXE /im systems.exe /im acnom.exe /im regdrv.exe /im mscsuscr.exe /im Pviunc.exe /im Bllianc.exe /im st.exe /im nvidia_update.exe /im dether.exe /im buff2.exe /im a.exe /im lacas.exe /im lsma.exe /im lsmab.exe
• cacls "%System Root%\Program Files\RemoteDesk\*.exe" /e /d everyone
• cacls "%System Root%\Program Files\RemoteDesk\*.exe" /e /d system
• cacls "%System Root%\Program Files\Microsoft SQL Server\110\Shared\*.exe" /e /d everyone
• cacls "%System Root%\Program Files\Microsoft SQL Server\110\Shared\*.exe" /e /d system
• cacls "%System Root%\Program Files\autodesk\*.exe" /e /d everyone
• cacls "%System Root%\Program Files\autodesk\*.exe" /e /d system
• cacls "%System Root%\Program Files\anyDesk\*.exe" /e /d everyone
• cacls "%System Root%\Program Files\anyDesk\*.exe" /e /d system
• cacls "%Program Files%\RemoteDesk\*.exe" /e /d everyone
• cacls "%Program Files%\RemoteDesk\*.exe" /e /d system
• cacls "%Program Files%\Microsoft SQL Server\110\Shared\*.exe" /e /d everyone
• cacls "%Program Files%\Microsoft SQL Server\110\Shared\*.exe" /e /d system
• cacls "%Program Files%\autodesk\*.exe" /e /d everyone
• cacls "%Program Files%\autodesk\*.exe" /e /d system
• cacls "%Program Files%\anydesk\*.exe" /e /d system
• cacls "%Program Files%\anydesk\*.exe" /e /d everyone
• cacls %Windows%\debug\WIA\*.exe /e /d everyone
• cacls %System Root%\Users\{username}\AppData\Roaming\Tempo\*.exe /e /d everyone
• cacls %Application Data%\Tempo /e /d everyone
• cacls %System Root%\Users\{username}\AppData\Roaming\Tempo\*.exe /e /d system
• cacls %System Root%\Users\Default\AppData\Roaming\Tempo\*.exe /e /d everyone
• cacls %Application Data%\Tempo /e /d system
• cacls %System Root%\Users\Default\AppData\Roaming\Tempo /e /d system
• cacls %System Root%\Users\Default\AppData\Roaming\Tempo /e /d everyone
• cacls %System Root%\Users\Default\AppData\Roaming\Tempo\*.exe /e /d system
• cacls %System Root%\Users\{username}\AppData\Roaming\*.exe /e /g everyone:f
• cacls %Application Data% /e /g everyone:f
• cacls %System Root%\Users\{username}\AppData\Local\Temp /e /g system:f
• cacls %System Root%\Users\{username}\AppData\Local\Temp /e /g everyone:f
• cacls %User Temp% /e /g system:f
• cacls %User Temp% /e /g everyone:f
• cacls %System Root%\Users\Default\AppData\Local\Temp /e /g everyone:f
• cacls %System Root%\Users\Default\AppData\Roaming /e /g everyone:f
• cacls %System Root%\Users\Default\AppData\Roaming /e /g system:f
• cacls %System Root%\Users\Default\AppData\Local\Temp\*.exe /e /g everyone:f
• cacls %System Root%\Users\Default\AppData\Roaming\*.exe /e /g everyone:f
• cacls %System Root%\Users\Default\AppData\Roaming\*.exe /e /g system:f
• cacls %System Root%\SysData\*.exe /e /d system
• cacls %System Root%\Msupdate /e /d system
• cacls %Windows%\xcecg /e /d system
• cacls %Windows%\ccm /e /d system
• cacls %Windows%\smss.exe /e /d system
• cacls "%System Root%\Program Files\Common Files\Services\*.exe" /e /d system
• cacls %System%\a.exe /e /d system
• cacls %Windows%\security\*.exe /e /d system
• cacls %Windows%\security\*.exe /e /d everyone
• cacls %Windows%\Resources\*.exe /e /d system
• cacls %Windows%\Resources\*.exe /e /d everyone
• cacls %Windows%\Resources\Themes\*.exe /e /d system
• cacls %Windows%\Resources\Themes\*.exe /e /d everyone
• %System%\net1 stop AnyDesk

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %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).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other System Modifications

This Trojan deletes the following files:

• %Windows%\splwow64.exe

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\WinRAR SFX

It adds the following registry entries:

HKEY_CURRENT_USER\Software\WinRAR SFX
C%%Windows%inf = "%Windows%\inf"

Dropping Routine

This Trojan drops the following files:

• %Windows%\inf\n.vbs
• %Windows%\inf\c3.bat

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

This report is generated via an automated analysis system.