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.
Installation
This backdoor creates the following folders:
- %User Temp%\_ir_sf7_temp_0
(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.)
Other System Modifications
This backdoor deletes the following files:
- %User Temp%\_ir_sf7_temp_0\irsetup.exe
- %User Temp%\_ir_sf7_temp_0\irsetup.dat
(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.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
HKEY_LOCAL_MACHINE\Software\Radmin\
v1.01\ViewType
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
AskUser = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
AutoAllow = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
DisableTrayIcon = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
EnableEventLog = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
EnableLogFile = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
LogFilePath = "%Windows%\logfile.txt"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
NTAuthEnabled = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
Timeout = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\Radmin\
v1.01\ViewType
Data = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\drivers\svchost.exe = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\drivers\AdmDll.dll = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\drivers\raddrv.dll = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\CompInfo.exe = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\LAUNCH.EXE = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\ShelExec.exe = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\sleep.exe = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\VideoChanger.exe = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\cdr.exe = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\SharedDlls
%System%\killexplorer.exe = "1"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
Port = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\
v2.0\Server\Parameters
Parameter = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
EnableFirewall = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DoNotAllowExceptions = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%System%\drivers\svchost.exe = "%System%\drivers\svchost.exe:*:Enabled:Explorer"
Dropping Routine
This backdoor drops the following files:
- %System%\drivers\svchost.exe
- %System%\drivers\AdmDll.dll
- %System%\drivers\raddrv.dll
- %System%\CompInfo.exe
- %System%\LAUNCH.EXE
- %System%\ShelExec.exe
- %System%\sleep.exe
- %System%\VideoChanger.exe
- %System%\cdr.exe
- %System%\killexplorer.exe
- %System%\drivers\Fuckoff.exe
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
This report is generated via an automated analysis system.
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
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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\RAdmin\v2.0\Server
- In HKEY_LOCAL_MACHINE\Software\Radmin\v1.01
To delete the registry key this malware/grayware created:
- Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
- In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>RAdmin>v2.0>Server - Still in the left panel, locate and delete the key:
Parameters - In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Radmin>v1.01 - Still in the left panel, locate and delete the key:
ViewType - Close Registry Editor.
Step 3
Delete this registry value
[ Learn More ]
[ back ]
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\RAdmin\v2.0\Server\Parameters
- AskUser = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- AutoAllow = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- DisableTrayIcon = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- EnableEventLog = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- EnableLogFile = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- LogFilePath = "%Windows%\logfile.txt"
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- NTAuthEnabled = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- Timeout = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Radmin\v1.01\ViewType
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- %System%\drivers\svchost.exe = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- %System%\drivers\AdmDll.dll = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- %System%\drivers\raddrv.dll = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- %System%\CompInfo.exe = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- %System%\LAUNCH.EXE = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- %System%\ShelExec.exe = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- %System%\VideoChanger.exe = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
- %System%\killexplorer.exe = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- In HKEY_LOCAL_MACHINE\SYSTEM\RAdmin\v2.0\Server\Parameters
- Parameter = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- DoNotAllowExceptions = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %System%\drivers\svchost.exe = "%System%\drivers\svchost.exe:*:Enabled:Explorer"
To delete the registry value this malware/grayware created:
- Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
- In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>RAdmin>v2.0>Server>Parameters - In the right panel, locate and delete the entry:
AskUser = "{random values}" - Again In the right panel, locate and delete the entry:
AutoAllow = "{random values}" - Again In the right panel, locate and delete the entry:
DisableTrayIcon = "{random values}" - Again In the right panel, locate and delete the entry:
EnableEventLog = "{random values}" - Again In the right panel, locate and delete the entry:
EnableLogFile = "{random values}" - Again In the right panel, locate and delete the entry:
LogFilePath = "%Windows%\logfile.txt" - Again In the right panel, locate and delete the entry:
NTAuthEnabled = "{random values}" - Again In the right panel, locate and delete the entry:
Timeout = "{random values}" - In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Radmin>v1.01>ViewType - In the right panel, locate and delete the entry:
Data = "{random values}" - In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>SharedDlls - In the right panel, locate and delete the entry:
%System%\drivers\svchost.exe = "1" - Again In the right panel, locate and delete the entry:
%System%\drivers\AdmDll.dll = "1" - Again In the right panel, locate and delete the entry:
%System%\drivers\raddrv.dll = "1" - Again In the right panel, locate and delete the entry:
%System%\CompInfo.exe = "1" - Again In the right panel, locate and delete the entry:
%System%\LAUNCH.EXE = "1" - Again In the right panel, locate and delete the entry:
%System%\ShelExec.exe = "1" - Again In the right panel, locate and delete the entry:
%System%\sleep.exe = "1" - Again In the right panel, locate and delete the entry:
%System%\VideoChanger.exe = "1" - Again In the right panel, locate and delete the entry:
%System%\cdr.exe = "1" - Again In the right panel, locate and delete the entry:
%System%\killexplorer.exe = "1" - Again In the right panel, locate and delete the entry:
Port = "{random values}" - Again In the right panel, locate and delete the entry:
Parameter = "{random values}" - In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile - In the right panel, locate and delete the entry:
EnableFirewall = "0" - Again In the right panel, locate and delete the entry:
DoNotAllowExceptions = "0" - In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile>AuthorizedApplications>List - In the right panel, locate and delete the entry:
%System%\drivers\svchost.exe = "%System%\drivers\svchost.exe:*:Enabled:Explorer" - Close Registry Editor.
Step 4
Search and delete these files
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There may be some component files that are hidden. Please make sure you check the
Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
- %System%\drivers\svchost.exe
- %System%\drivers\AdmDll.dll
- %System%\drivers\raddrv.dll
- %System%\CompInfo.exe
- %System%\LAUNCH.EXE
- %System%\ShelExec.exe
- %System%\sleep.exe
- %System%\VideoChanger.exe
- %System%\cdr.exe
- %System%\killexplorer.exe
- %System%\drivers\Fuckoff.exe
To delete malware/grayware component files:
- Search for the following files:
- %System%\drivers\svchost.exe
- %System%\drivers\AdmDll.dll
- %System%\drivers\raddrv.dll
- %System%\CompInfo.exe
- %System%\LAUNCH.EXE
- %System%\ShelExec.exe
- %System%\sleep.exe
- %System%\VideoChanger.exe
- %System%\cdr.exe
- %System%\killexplorer.exe
- %System%\drivers\Fuckoff.exe
Note: To do a search for the following files, right-click Start then click Search... or Find..., depending on the version of Windows you are running. For each file to be deleted, type its file name in the Named input box. In the Look In drop-down list, select My Computer, then press Enter. - Once located, select the file then press SHIFT+DELETE to permanently delete the file.
- Repeat the said steps for all files listed.
Step 5
Search and delete this folder
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Please make sure you check the
Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
- %User Temp%\_ir_sf7_temp_0
To delete the malware/grayware folder:
- Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
- In the Named input box, type:
- %User Temp%\_ir_sf7_temp_0
- In the Look In drop-down list, select My Computer, then press Enter.
- Once located, select the folder then press SHIFT+DELETE to permanently delete the folder.
Step 6
Scan your computer with your Trend Micro product to delete files detected as BKDR_SUZUPEI.A. 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.
- %User Temp%\_ir_sf7_temp_0\irsetup.exe
- %User Temp%\_ir_sf7_temp_0\irsetup.dat
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