WORM_SPYBOT.SJ
Backdoor:Win32/IRCbot.gen!Z (Microsoft); generic!bg.esb (McAfee); W32.Spybot.Worm (Symantec); HEUR:Trojan.Win32.Generic (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse BackDoor.RBot.AS (AVG)
Windows

Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It deletes itself after execution.
TECHNICAL DETAILS
946,176 bytes
EXE
Yes
06 Dec 2014
Arrival Details
This worm 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 worm drops the following copies of itself into the affected system:
- %System%\svdhost.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It creates the following folders:
- %User Profile%\Application Data\TEMP
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Autostart Technique
This worm adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Windows Sound = "svdhost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\RunServices
Windows Sound = "svdhost.exe"
Other System Modifications
This worm adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Licenses
HKEY_CLASSES_ROOT\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\AuxUserType
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\AuxUserType\
2
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats\
DefaultSet
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats\
GetSet
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats\
GetSet\0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats\
GetSet\1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats\
GetSet\2
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DefaultIcon
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\Implemented Categories
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\Implemented Categories\
{7DD95801-9882-11CF-9FA9-00AA006C42C4}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\Implemented Categories\
{7DD95802-9882-11CF-9FA9-00AA006C42C4}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\InprocHandler32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\Insertable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\LocalServer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\LocalServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\MiscStatus
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\PersistentHandler
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\verb
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\verb\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\verb\
1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\verb\
2
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\zboyfhOoAHs
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\zptotxwOw
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\mCkwx
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\lwxbAbhuoa
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\kNcnnjb
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DbdxwX
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\RunServices
HKEY_CURRENT_USER\Software\Microsoft\
OLE
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Licenses
{R7C0DB872A3F777C0} = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\Licenses
{K7C0DB872A3F777C0} = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
AppID = "{00022601-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Licenses
{IDEE9E09D11E5850E} = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\Licenses
{0DEE9E09D11E5850E} = "{random values}"
HKEY_CURRENT_USER\Software\Microsoft\
OLE
Windows Sound = "svdhost.exe"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
RFC1156Agent\CurrentVersion\Parameters
TrapPollTimeMilliSecs = "3a98"
(Note: The default value data of the said registry entry is 3a98.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Ole
EnableDCOM = "N"
(Note: The default value data of the said registry entry is Y.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Lsa
restrictanonymous = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Lsa
restrictanonymoussam = "1"
(Note: The default value data of the said registry entry is 1.)
It deletes the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\Version
Dropping Routine
This worm drops the following files:
- %System%\wpcap.dll
- %System%\packet.dll
- %System%\Drivers\npf.sys
- %User Profile%\Application Data\TEMP:466F9D5D
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Other Details
This worm connects to the following possibly malicious URL:
- {BLOCKED}5.{BLOCKED}5
It deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
9.700
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\Software
- Licenses
- In HKEY_CLASSES_ROOT\CLSID
- {CD363BEC-7150-B887-530D-5F3E2E0424EA}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- AuxUserType
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\AuxUserType
- 2
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- DataFormats
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats
- DefaultSet
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats
- GetSet
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats\GetSet
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats\GetSet
- 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\DataFormats\GetSet
- 2
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- DefaultIcon
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- Implemented Categories
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\Implemented Categories
- {7DD95801-9882-11CF-9FA9-00AA006C42C4}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\Implemented Categories
- {7DD95802-9882-11CF-9FA9-00AA006C42C4}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- InprocHandler32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- Insertable
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- LocalServer
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- LocalServer32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- MiscStatus
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- PersistentHandler
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- ProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- verb
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\verb
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\verb
- 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}\verb
- 2
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- zboyfhOoAHs
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- zptotxwOw
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- mCkwx
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- lwxbAbhuoa
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- kNcnnjb
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- DbdxwX
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion
- RunServices
- In HKEY_CURRENT_USER\Software\Microsoft
- OLE
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
- Windows Sound = "svdhost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
- Windows Sound = "svdhost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Licenses
- {R7C0DB872A3F777C0} = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Licenses
- {K7C0DB872A3F777C0} = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- AppID = "{00022601-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Licenses
- {IDEE9E09D11E5850E} = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Licenses
- {0DEE9E09D11E5850E} = "{random values}"
- In HKEY_CURRENT_USER\Software\Microsoft\OLE
- Windows Sound = "svdhost.exe"
Step 5
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\Microsoft\RFC1156Agent\CurrentVersion\Parameters
- From: TrapPollTimeMilliSecs = "3a98"
To: TrapPollTimeMilliSecs = ""3a98""
- From: TrapPollTimeMilliSecs = "3a98"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ole
- From: EnableDCOM = "N"
To: EnableDCOM = ""Y""
- From: EnableDCOM = "N"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa
- restrictanonymous = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa
- From: restrictanonymoussam = "1"
To: restrictanonymoussam = ""1""
- From: restrictanonymoussam = "1"
Step 6
Search and delete these components
- %System%\wpcap.dll
- %System%\packet.dll
- %System%\Drivers\npf.sys
- %User Profile%\Application Data\TEMP:466F9D5D
Step 7
Search and delete this folder
- %User Profile%\Application Data\TEMP
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as WORM_SPYBOT.SJ. 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 9
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_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CD363BEC-7150-B887-530D-5F3E2E0424EA}
- Version
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