TROJ_RSHOT.USAV0109
Trojan:Win32/Sisproc (Microsoft); Trojan.Startpage (Symantec); Backdoor.Win32.RShot.aqx (Kaspersky); Backdoor.Win32.Hupigon (v) (Sunbelt); Trojan horse VB.AEBO (AVG)
Windows 2000, Windows XP, Windows Server 2003

Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan 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
2,137,048 bytes
EXE
No
26 Mar 2013
Arrival Details
This Trojan 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 Trojan adds the following registry keys:
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
DefaultIcon
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
InProcServer32
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
Instance
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
Instance\InitPropertyBag
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
shellex
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
shellex\ContextMenuHandlers
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
shellex\ContextMenuHandlers\{7AF60DD2-4979-11D1-3333-00C04FC33547}
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
shellex\MayChangeDefaultMenu
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\
ShellFolder
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
DefaultIcon
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
InProcServer32
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
Instance
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
Instance\InitPropertyBag
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
shellex
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
shellex\ContextMenuHandlers
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
shellex\ContextMenuHandlers\{7AF60DD2-4979-11D1-4444-00C04FC33567}
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
shellex\MayChangeDefaultMenu
HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\
ShellFolder
HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\
shellex
HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\
shellex\ContextMenuHandlers
HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\
shellex\ContextMenuHandlers\IE2
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
LocalizedString = "@shdoclc.dll,-880"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
InfoTip = "@shdoclc.dll,-880"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\InProcServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance
CLSID = "{3f454f0e-42ae-4d7c-8ea3-328250d6e272}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\
InitPropertyBag
CLSID = "{13709620-C279-11CE-A49E-444553540000}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\
InitPropertyBag
command = "@Shdoclc.dll,-10241"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\
InitPropertyBag
method = "ShellExecute"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\
InitPropertyBag
Param1 = "http://www.{BLOCKED}1.com/?8"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\
InitPropertyBag
Param2 = "%System Root%\Program Files\Internet Explorer\iexplore.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\ShellFolder
Param2 = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
LocalizedString = "@shdoclc.dll,-880"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
InfoTip = "@shdoclc.dll,-880"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\InProcServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance
CLSID = "{3f454f0e-42ae-4d7c-8ea3-328250d6e272}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\
InitPropertyBag
CLSID = "{13709620-C279-11CE-A49E-444553540000}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\
InitPropertyBag
command = "@Shdoclc.dll,-10241"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\
InitPropertyBag
method = "ShellExecute"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\
InitPropertyBag
Param1 = "http://www.{BLOCKED}1.com/?8"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\
InitPropertyBag
Param2 = "%System Root%\Program Files\Internet Explorer\iexplore.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\ShellFolder
Param2 = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
Attributes = "0"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\ShellFolder
Attributes = "0"
(Note: The default value data of the said registry entry is 24.)
It deletes the following registry keys:
HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\
shell
This report is generated via an automated analysis system.
SOLUTION
9.300
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 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_CLASSES_ROOT\CLSID
- {7AF60DD2-4979-11D1-3333-00C04FC33547}
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
- DefaultIcon
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
- InProcServer32
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
- Instance
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance
- InitPropertyBag
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
- shellex
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\shellex
- ContextMenuHandlers
- In HKEY_CLASSES_ROOT\CLSID\shellex\ContextMenuHandlers
- {7AF60DD2-4979-11D1-3333-00C04FC33547}
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\shellex
- MayChangeDefaultMenu
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
- ShellFolder
- In HKEY_CLASSES_ROOT\CLSID
- {7AF60DD2-4979-11D1-4444-00C04FC33567}
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
- DefaultIcon
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
- InProcServer32
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
- Instance
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance
- InitPropertyBag
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
- shellex
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\shellex
- ContextMenuHandlers
- In HKEY_CLASSES_ROOT\CLSID\shellex\ContextMenuHandlers
- {7AF60DD2-4979-11D1-4444-00C04FC33567}
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\shellex
- MayChangeDefaultMenu
- In HKEY_CLASSES_ROOT\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
- ShellFolder
- In HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}
- shellex
- In HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shellex
- ContextMenuHandlers
- In HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shellex\ContextMenuHandlers
- IE2
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\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
- LocalizedString = "@shdoclc.dll,-880"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
- InfoTip = "@shdoclc.dll,-880"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\InProcServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance
- CLSID = "{3f454f0e-42ae-4d7c-8ea3-328250d6e272}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\InitPropertyBag
- CLSID = "{13709620-C279-11CE-A49E-444553540000}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\InitPropertyBag
- command = "@Shdoclc.dll,-10241"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\InitPropertyBag
- method = "ShellExecute"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\InitPropertyBag
- Param1 = "http://www.{BLOCKED}1.com/?8"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\Instance\InitPropertyBag
- Param2 = "%System Root%\Program Files\Internet Explorer\iexplore.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}\ShellFolder
- Param2 = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
- LocalizedString = "@shdoclc.dll,-880"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}
- InfoTip = "@shdoclc.dll,-880"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\InProcServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance
- CLSID = "{3f454f0e-42ae-4d7c-8ea3-328250d6e272}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\InitPropertyBag
- CLSID = "{13709620-C279-11CE-A49E-444553540000}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\InitPropertyBag
- command = "@Shdoclc.dll,-10241"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\InitPropertyBag
- method = "ShellExecute"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\InitPropertyBag
- Param1 = "http://www.{BLOCKED}1.com/?8"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\Instance\InitPropertyBag
- Param2 = "%System Root%\Program Files\Internet Explorer\iexplore.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-4444-00C04FC33567}\ShellFolder
- Param2 = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7AF60DD2-4979-11D1-3333-00C04FC33547}
- Attributes = "0"
Step 4
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\ShellFolder
- From: Attributes = "0"
To: Attributes = ""24""
- From: Attributes = "0"
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_RSHOT.USAV0109. 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 6
Restore these deleted registry keys/values from backup
*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- In HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}
- shell
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