PE_TUFIK.AR-1
Virus:Win32/Tufik.gen!A (Microsoft); W32/Tufik (McAfee); W32.Tufik.B!inf (Symantec); Trojan.Win32.Patched.cv (Kaspersky); BehavesLike.Win32.Malware.dlw (mx-v) (Sunbelt); Win32.Stufik.A (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
558,080 bytes
EXE
No
04 Nov 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 keys:
HKEY_LOCAL_MACHINE\SOFTWARE\PopCap\
Zuma
HKEY_LOCAL_MACHINE\SOFTWARE\PopCap\
Zuma\Test3D
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\PopCap\
Zuma
InProgress = 1
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
DirectDraw\MostRecentApplication
Name = "{malware file name}"
(Note: The default value data of the said registry entry is mshta.exe.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
DirectDraw\MostRecentApplication
ID = 3fcfd9bd
(Note: The default value data of the said registry entry is 41107b3f.)
Other Details
This file infector connects to the following possibly malicious URL:
- http://www.{BLOCKED}yu.com/lsass1.exe
This report is generated via an automated analysis system.
SOLUTION
9.200
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
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\SOFTWARE\PopCap
- Zuma
- In HKEY_LOCAL_MACHINE\SOFTWARE\PopCap\Zuma
- Test3D
Step 3
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\SOFTWARE\PopCap\Zuma
- InProgress=1
Step 4
Restore this modified 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\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication
- From: Name="{malware file name}"
To: Name=mshta.exe
- From: Name="{malware file name}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication
- From: ID=3fcfd9bd
To: ID=41107b3f
- From: ID=3fcfd9bd
Step 5
Scan your computer with your Trend Micro product to clean files detected as PE_TUFIK.AR-1. 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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