Worm.Win32.ONLINEG.IWL
Worm:Win32/Taterf.B(MICROSOFT); Trojan-GameThief.Win32.Magania.bnxr(KASPERSKY); Win32/PSW.OnLineGames.NMY trojan(NOD32)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
106,576 bytes
EXE
Yes
16 Mar 2011
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 copies of itself into the affected system:
- %System%\ierdfgh.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Autostart Technique
This Worm adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
kxswsoft = "%System%\ierdfgh.exe"
It registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\KAVsys
Other System Modifications
This Worm adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\KAVsys
Type = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\KAVsys
ErrorControl = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\KAVsys
Start = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\KAVsys
ImagePath = "\??\%System%\drivers\klif.sys"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
ShowSuperHidden = "0"
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
Hidden = "2"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced\Folder\Hidden\
SHOWALL
CheckedValue = "0"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoDriveTypeAutoRun = "91"
Propagation
This Worm drops the following copy of itself in all physical and removable drives:
- {drive letter}:\{BLOCKED}u.com
Dropping Routine
This Worm drops the following files:
- %System%\drivers\klif.sys
- %System%\pytdfse0.dll
- {all drives}\autorun.inf
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other Details
This Worm connects to the following possibly malicious URL:
- http://{BLOCKED}3.com/xrbv/uu1.rar
However, as of this writing, the said sites are inaccessible.
SOLUTION
9.300
14.948.06
19 Apr 2019
14.949.00
20 Apr 2019
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
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.
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
- KAVsys
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\Run
- kxswsoft = %System%\ierdfgh.exe
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\KAVsys
- Type = 1
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\KAVsys
- ErrorControl = 1
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\KAVsys
- Start = 1
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\KAVsys
- ImagePath = \??\%System%\drivers\klif.sys
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
- ShowSuperHidden = 0
Step 5
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
- From: Hidden = 2
To: Hidden = {user preference}
- From: Hidden = 2
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL
- From: CheckedValue = 0
To: CheckedValue = 1
- From: CheckedValue = 0
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
- From: NoDriveTypeAutoRun = 91
To: NoDriveTypeAutoRun = {user preference}
- From: NoDriveTypeAutoRun = 91
Step 6
Search and delete these files
- %System%\ierdfgh.exe
- %System%\drivers\klif.sys
- %System%\pytdfse0.dll
- {all drives}\autorun.inf
- {drive letter}:\teau.com
Step 7
Scan your computer with your Trend Micro product to delete files detected as Worm.Win32.ONLINEG.IWL. 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 the following Trend Micro Support pages for more information:
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