TROJ_DROPPER.EJQJ
Trojan.Gen.2 (Symantec); AdWare.Win32.Hebogo.abw (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt)
Windows
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
837,336 bytes
EXE
Yes
06 Dec 2014
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.
Installation
This Trojan creates the following folders:
- %User Temp%\_ir_sf_temp_0
- %User Profile%\Application Data\WinCtrView
- %User Profile%\WinCtrView\Engin
- %User Profile%\Engin\ProVersion
- %User Profile%\Engin\ProVersion/Uninstall
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %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 Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
WinCtrCon = "%ApplicationDataFolder%\WinCtrView\Engin\ProVersion\WinCtrCon.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
WinCtrProc = "%ApplicationDataFolder%\WinCtrView\Engin\ProVersion\WinCtrProc.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
WinCtrProc = "%User Profile%\ProVersion\WinCtrProc.exe -pJAqEPx"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
WinCtrCon = "%User Profile%\ProVersion\WinCtrCon.exe -wRHyMWFE"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
WinCtrProc = "%User Profile%\ProVersion\WinCtrProc.exe -wRHyMWFE"
Other System Modifications
This Trojan modifies the following file(s):
- %System%\MSINET.OCX
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It deletes the following files:
- %User Temp%\_ir_sf_temp_0\irsetup.exe
- %User Profile%\ProVersion\WinCtrProc.exe
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %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.)
It adds the following registry keys:
HKEY_CURRENT_USER\Software\WinCtrView
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{48E59293-9880-11CF-9754-00AA00C00908}\Control
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{48E59290-9880-11CF-9754-00AA00C00908}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{48E59290-9880-11CF-9754-00AA00C00908}\1.0\
0
It adds the following registry entries:
HKEY_CURRENT_USER\Software\WinCtrView
Owner = "admin"
HKEY_CURRENT_USER\Software\WinCtrView
USER_NO = "3219"
HKEY_CURRENT_USER\Software\WinCtrView
S_NO = "0"
HKEY_CURRENT_USER\Software\WinCtrView
Version = "0000"
HKEY_CURRENT_USER\Software\WinCtrView
Ver = "sup"
HKEY_CURRENT_USER\Software\WinCtrView
Upmom = "Y"
HKEY_CURRENT_USER\Software\WinCtrView
SUBNAME = "MAIN"
HKEY_CURRENT_USER\Software\WinCtrView
Commit = "Y"
HKEY_CURRENT_USER\Software\WinCtrView
PDR = "asdfaeiqwerh"
HKEY_CURRENT_USER\Software\WinCtrView
FirstTime = "0"
HKEY_CURRENT_USER\Software\WinCtrView
Upmom = "N"
HKEY_CURRENT_USER\Software\WinCtrView
Commit = "N"
HKEY_CURRENT_USER\Software\WinCtrView
Version = "1662"
HKEY_CURRENT_USER\Software\WinCtrView
MomDate = "11/7/2014"
HKEY_CURRENT_USER\Software\WinCtrView
AdFlag = "Y"
HKEY_CURRENT_USER\Software\WinCtrView
Intro_No = "0"
HKEY_CURRENT_USER\Software\WinCtrView
Version = "1674"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{48E59293-9880-11CF-9754-00AA00C00908}\InprocServer32
ThreadingModel = "Apartment"
(Note: The default value data of the said registry entry is Apartment.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{48E59291-9880-11CF-9754-00AA00C00908}\TypeLib
Version = "1.0"
(Note: The default value data of the said registry entry is 1.0.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{48E59292-9880-11CF-9754-00AA00C00908}\TypeLib
Version = "1.0"
(Note: The default value data of the said registry entry is 1.0.)
It deletes the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{48E59293-9880-11CF-9754-00AA00C00908}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{48E59294-9880-11CF-9754-00AA00C00908}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{48E59295-9880-11CF-9754-00AA00C00908}
HKEY_CURRENT_USER\SOFTWARE\MicroName
HKEY_CURRENT_USER
Dropping Routine
This Trojan drops the following files:
- %User Temp%\_ir_sf_temp_0\irsetup.dat
- %User Temp%\_ir_sf_temp_0\IRIMG1.JPG
- %User Temp%\_ir_sf_temp_0\IRIMG2.JPG
- %System%\VB6KO.DLL
- %User Profile%\ProVersion\WinCtrCon.exe
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %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 Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}p.com/Config/sTakeList.asp?n=3219
- http://{BLOCKED}.162.61/Config/AdNw/FcTimeLab.asp
- http://{BLOCKED}.162.61/Config/NewConf/ProgramUpdateLab.asp?version=1662
- http://loadform.{BLOCKED}o.kr/Download/WinCtrProc.exe
- http://{BLOCKED}rver.kr/Config/AdNw/StakePsList.asp?uno=3219
- http://{BLOCKED}.162.42/Config/FormLocation.asp
- http://{BLOCKED}.162.42/Config/AdNw/FcPimSLab.asp
- http://{BLOCKED}.162.42/Config/newConf/UCg_LPrMLab.asp?user_no=3219
- http://{BLOCKED}.162.42/Config/TransSiteString.asp?nation=KOREA
- http://loadform.{BLOCKED}o.kr/Download\WinCtrCon.exe
- {BLOCKED}0.1
- {BLOCKED}.162.43
- {BLOCKED}.162.14
- {BLOCKED}.162.57
- {BLOCKED}.162.3
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_CURRENT_USER\Software
- WinCtrView
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{48E59293-9880-11CF-9754-00AA00C00908}
- Control
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {48E59290-9880-11CF-9754-00AA00C00908}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{48E59290-9880-11CF-9754-00AA00C00908}\1.0
- 0
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- WinCtrCon = "%ApplicationDataFolder%\WinCtrView\Engin\ProVersion\WinCtrCon.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- WinCtrProc = "%ApplicationDataFolder%\WinCtrView\Engin\ProVersion\WinCtrProc.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- WinCtrProc = "%User Profile%\ProVersion\WinCtrProc.exe -pJAqEPx"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- WinCtrCon = "%User Profile%\ProVersion\WinCtrCon.exe -wRHyMWFE"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- WinCtrProc = "%User Profile%\ProVersion\WinCtrProc.exe -wRHyMWFE"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Owner = "admin"
- In HKEY_CURRENT_USER\Software\WinCtrView
- USER_NO = "3219"
- In HKEY_CURRENT_USER\Software\WinCtrView
- S_NO = "0"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Version = "0000"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Ver = "sup"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Upmom = "Y"
- In HKEY_CURRENT_USER\Software\WinCtrView
- SUBNAME = "MAIN"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Commit = "Y"
- In HKEY_CURRENT_USER\Software\WinCtrView
- PDR = "asdfaeiqwerh"
- In HKEY_CURRENT_USER\Software\WinCtrView
- FirstTime = "0"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Upmom = "N"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Commit = "N"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Version = "1662"
- In HKEY_CURRENT_USER\Software\WinCtrView
- MomDate = "11/7/2014"
- In HKEY_CURRENT_USER\Software\WinCtrView
- AdFlag = "Y"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Intro_No = "0"
- In HKEY_CURRENT_USER\Software\WinCtrView
- Version = "1674"
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\Classes\CLSID\{48E59293-9880-11CF-9754-00AA00C00908}\InprocServer32
- From: ThreadingModel = "Apartment"
To: ThreadingModel = ""Apartment""
- From: ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{48E59291-9880-11CF-9754-00AA00C00908}\TypeLib
- From: Version = "1.0"
To: Version = ""1.0""
- From: Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{48E59292-9880-11CF-9754-00AA00C00908}\TypeLib
- From: Version = "1.0"
To: Version = ""1.0""
- From: Version = "1.0"
Step 6
Search and delete these components
- %User Temp%\_ir_sf_temp_0\irsetup.dat
- %User Temp%\_ir_sf_temp_0\IRIMG1.JPG
- %User Temp%\_ir_sf_temp_0\IRIMG2.JPG
- %System%\VB6KO.DLL
- %User Profile%\ProVersion\WinCtrCon.exe
Step 7
Search and delete these folders
- %User Temp%\_ir_sf_temp_0
- %User Profile%\Application Data\WinCtrView
- %User Profile%\WinCtrView\Engin
- %User Profile%\Engin\ProVersion
- %User Profile%\Engin\ProVersion/Uninstall
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_DROPPER.EJQJ. 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 deleted/modified files and/or registry entries from backup
*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- %System%\MSINET.OCX
Step 10
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_sf_temp_0\irsetup.exe
- %User Profile%\ProVersion\WinCtrProc.exe
Step 11
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
- {48E59293-9880-11CF-9754-00AA00C00908}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {48E59294-9880-11CF-9754-00AA00C00908}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {48E59295-9880-11CF-9754-00AA00C00908}
- In HKEY_CURRENT_USER\SOFTWARE
- MicroName
- In
- HKEY_CURRENT_USER
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