BKDR_HUPIGON.QPP
Backdoor:Win32/Zegost.B (Microsoft); BackDoor-AWQ!cw (McAfee); Backdoor.Graybird (Symantec); Trojan-Dropper.Win32.Agent.aycg (Kaspersky); Trojan-Dropper.Win32.Agent.aycg (v) (Sunbelt); Backdoor.Hupigon.163762 (FSecure)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This backdoor 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
959,488 bytes
EXE
Yes
25 May 2012
Arrival Details
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Autostart Technique
This backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
MouseLock = "%User Temp%\Kendy.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\ias\parameters
Other System Modifications
This backdoor deletes the following files:
- %System%\dad53dd.del
- %System%\mmacc.dll
- qbprvcajmk
- %Windows%\SoftwareDistribution\DataStore\Logs\edbtmp.log
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.. %Windows% is the Windows folder, which is usually C:\Windows.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\HappySoft
HKEY_LOCAL_MACHINE\Software\HappySoft\
MouseLock
HKEY_LOCAL_MACHINE\soFTwARE\qbprvcajmk
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Comias70
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\MediaResources\msvideo
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\HappySoft\
MouseLock
Installed = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\HappySoft\
MouseLock
Log2Quit = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\HappySoft\
MouseLock
Version = "4.0"
HKEY_LOCAL_MACHINE\SOFTWARE\HappySoft\
MouseLock
PassWord = "_ODUwVE9WRWY__"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\ias
Description = "¼à²âÐÂÓ²¼þÉ豸²¢×Ô¶¯¸üÐÂÉ豸Çý¶¯³ÌÐò"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\ias
Module = "%User Temp%\yanhui.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\qbprvcajmk
servicedll = "%System%\mmacc.dll"
HKEY_LOCAL_MACHINE\SOFTWARE\qbprvcajmk
servicemain = "DllGetClassObject"
Dropping Routine
This backdoor drops the following files:
- %User Temp%\Kendy.exe
- %User Temp%\yanhui.exe
- %User Temp%\46953.log
(Note: %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 and 7.)
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
Restart in Safe Mode
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\ias
- parameters
- In HKEY_LOCAL_MACHINE\Software
- HappySoft
- In HKEY_LOCAL_MACHINE\Software\HappySoft
- MouseLock
- In HKEY_LOCAL_MACHINE\soFTwARE
- qbprvcajmk
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft
- Comias70
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MediaResources
- msvideo
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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- MouseLock = "%User Temp%\Kendy.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\HappySoft\MouseLock
- Installed = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\HappySoft\MouseLock
- Log2Quit = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\HappySoft\MouseLock
- Version = "4.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\HappySoft\MouseLock
- PassWord = "_ODUwVE9WRWY__"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ias
- Description = "¼à²âÐÂÓ²¼þÉ豸²¢×Ô¶¯¸üÐÂÉ豸Çý¶¯³ÌÐò"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ias
- Module = "%User Temp%\yanhui.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\qbprvcajmk
- servicedll = "%System%\mmacc.dll"
- In HKEY_LOCAL_MACHINE\SOFTWARE\qbprvcajmk
- servicemain = "DllGetClassObject"
Step 5
Search and delete these components
- %User Temp%\Kendy.exe
- %User Temp%\yanhui.exe
- %User Temp%\46953.log
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_HUPIGON.QPP. 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.
Step 7
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %System%\dad53dd.del
- %System%\mmacc.dll
- qbprvcajmk
- %Windows%\SoftwareDistribution\DataStore\Logs\edbtmp.log
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