WORM_BAGLE.U
Worm:Win32/Bagle (Microsoft); Win32/Bagle.U worm (NOD32)
Windows
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Worm arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It 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
8,208 bytes
EXE
No
18 Oct 2017
Arrival Details
This Worm arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
It 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 and executes them:
- %System%\gigabit.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
gigabit.exe = "%System%\gigabit.exe"
Other System Modifications
This Worm adds the following registry keys:
HKEY_CURRENT_USER\Software\Windows2004
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Windows2004
fr1n = "1"
HKEY_CURRENT_USER\Software\Windows2004
gsed = {value}
Other Details
This Worm connects to the following possibly malicious URL:
- www.{BLOCKED}e.de
However, as of this writing, the said sites are inaccessible.
SOLUTION
9.850
7.861.00
26 Feb 2011
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
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_CURRENT_USER\Software
- Windows2004
- Windows2004
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
- gigabit.exe = %System%\gigabit.exe
- gigabit.exe = %System%\gigabit.exe
Step 5
Scan your computer with your Trend Micro product to delete files detected as WORM_BAGLE.U. 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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