PE_MADANGEL.D
Virus:Win32/Madang.A (Microsoft); W32/Alisa.d (McAfee); W32.Madangel (Symantec); Virus.Win32.Small.l (Kaspersky); Virus.Win32.Madang.d (v) (Sunbelt); Win32.Madangel.I (FSecure)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: File infector
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This file infector arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
94,922 bytes
EXE
30 Sep 2011
Arrival Details
This file infector arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This file infector adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\lanmanserver\parameters
AutoShareServer = 1
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\lanmanserver\parameters
AutoShareWks = 1
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Serverx = "%System%\Serverx.exe"
Dropping Routine
This file infector drops the following files:
- %Windows%\ST5UNST.000
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
Other Details
This file infector connects to the following possibly malicious URL:
- http://192.{BLOCKED}8.5.150/setupx.dat
This report is generated via an automated analysis system.
SOLUTION
9.200
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
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_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\lanmanserver\parameters
- AutoShareServer=1
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\lanmanserver\parameters
- AutoShareWks=1
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- Serverx="%System%\Serverx.exe"
Step 3
Search and delete this file
Step 4
Scan your computer with your Trend Micro product to clean files detected as PE_MADANGEL.D. 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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