Worm.Win32.DOFOIL.AA

This Worm 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 Worm 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 Worm drops the following files:

• {Removable Drive}:\.lnk

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

• %User Startup%\win{random}.exe
• %Common Startup%\win{random}.exe
• %Windows%\{Random Numbers}\winsvcs.exe
• %Windows%\{Random Numbers}\windrconfig.exe
• %User Temp%\{Random Numbers}.exe
• %Program Data%\{Random}\windrvconfig.exe

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows XP, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, and 8.. %Common Startup% is the startup folder for all users, which is usually C:\Documents and Settings\All Users\Start Menu\Programs\Startup on Windows 2000, XP, and Server 2003, or C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, and 8.. %Windows% is the Windows folder, where it usually is C:\Windows 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, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.)

Autostart Technique

This Worm creates the following registry entries to enable automatic execution of dropped component at every system startup:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Run
Microsoft Windows Services = "%Windows%\{Random Number}\winsvcs.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Microsoft Windows Services = "%Windows%\{Random Number}\winsvcs.exe"

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Run
WDrvConfiguration = "%Windows%\{Random Numbers}\windrvconfig.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
WDrvConfiguration = "%Windows%\{Random Numbers}\windrvconfig.exe"

Other System Modifications

This Worm modifies the following registry entries:

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableScanOnRealtimeEnable = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableOnAccessProtection = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableBehaviorMonitoring = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_CURRENT_USER\Software\Microsoft\
Windwos\CurrentVersion\Policies\
System
DisableTaskMgr = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_CURRENT_USER\Software\Microsoft\
Windwos\CurrentVersion\Policies\
System
DisableRegistryTools = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Microsoft\
Security Center
AntiVirusOverride = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Microsoft\
Security Center
UpdatesOverride = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Microsoft\
Security Center
FirewallOverride = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Microsoft\
Security Center
AntiVirusDisableNotify = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Microsoft\
Security Center
UpdatesDisableNotify = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Microsoft\
Security Center
AutoUpdateDisableNotify = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_LOCAL_MACHINE\Software\Microsoft\
Security Center
FirewallDisableNotify = "1"

(Note: The default value data of the said registry entry is "0".)

HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\CurrentVersion\SystemRestore
DisableSR = "1"

(Note: The default value data of the said registry entry is "0".)

Propagation

This Worm drops the following copy(ies) of itself in all removable drives:

• {Removable Drive}:\_\DeviceManager.exe

Other Details

This Worm connects to the following possibly malicious URL:

• http://{BLOCKED}.{BLOCKED}.{BLOCKED}7.153/update.txt
• http://{BLOCKED}sheuesihfo.ru/5.exe
• http://{BLOCKED}.{BLOCKED}.{BLOCKED}7.153/5.exe
• http://{BLOCKED}.{BLOCKED}.{BLOCKED}7.153/4.exe
• http://{BLOCKED}sheuesihfo.ru/2.exe
• http://{BLOCKED}.{BLOCKED}.{BLOCKED}7.153/3.exe
• http://{BLOCKED}.{BLOCKED}.{BLOCKED}7.153/2.exe
• http://{BLOCKED}.{BLOCKED}.{BLOCKED}7.153/1.exe
• http://{BLOCKED}ghidy.in/1.exe
• http://{BLOCKED}ghidy.in/2.exe
• http://{BLOCKED}ghidy.in/3.exe
• http://{BLOCKED}ghidy.in/4.exe
• http://{BLOCKED}ghidy.in/5.exe
• http://{BLOCKED}irury.in/1.exe
• http://{BLOCKED}irury.in/2.exe
• http://{BLOCKED}irury.in/3.exe
• http://{BLOCKED}irury.in/4.exe
• http://{BLOCKED}irury.in/5.exe
• http://{BLOCKED}iueiy.in/1.exe
• http://{BLOCKED}iueiy.in/2.exe
• http://{BLOCKED}iueiy.in/3.exe
• http://{BLOCKED}iueiy.in/4.exe
• http://{BLOCKED}iueiy.in/5.exe
• http://{BLOCKED}gueuy.in/1.exe
• http://{BLOCKED}gueuy.in/3.exe
• http://{BLOCKED}gueuy.in/4.exe
• http://{BLOCKED}gueuy.in/5.exe
• http://{BLOCKED}eifiy.in/2.exe
• http://{BLOCKED}eifiy.in/3.exe
• http://{BLOCKED}eifiy.in/5.exe
• http://{BLOCKED}ishfy.in/1.exe
• http://{BLOCKED}ishfy.in/2.exe
• http://{BLOCKED}ishfy.in/3.exe
• http://{BLOCKED}ishfy.in/4.exe
• http://{BLOCKED}ishfy.in/5.exe