JAVA_ADWIND.JEJPDK

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.

It adds certain registry entries to disable the Task Manager. This action prevents users from terminating the malware process, which can usually be done via the Task Manager.

It executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information.

It gathers information and reports it to its servers.

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 drops the following copies of itself into the affected system:

• %User Profile%\bPCcLfvhpQZ\{11 Random Characters}.{6 Random Characters}

(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.)

It drops the following files:

• %User Temp%\hsperfdata_{username}\{process ID} -> contains details of the malware
• %User Profile%.oracle_jre_usage\{random}.timestamp -> time usage of oracle
• %User Temp%\Retrive{random numbers}.vbs -> script to detect installed AV security and Firewall products (deleted after execution)
• %User Profile%\GTQnQECknnH\ID.txt -> contains UUID
• %User Profile%\bPCcLfvhpQZ\ID.txt -> contains UUID
• %System%\test.txt -> used to check for admin rights

(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.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It drops and executes the following files:

• %User Temp%\_0.{random numbers}.class -> class to be loaded by main executable JAR, detected as JAVA_ADWIND.WIL

(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.)

It adds the following processes:

• xcopy "%Program Files%\Java\jre{version}" "%Application Data%\Oracle\" /e -> copy files and directory trees of Java Installation folder to %Application Data%\Oracle folder
• attrib +h "%User Profile%\{random characters}\*.*" -> set attribute of all files under the folder to hidden
• attrib +h "%User Profile%\{random characters}" -> set attribute of folder to hidden
• %System%\taskkill.exe /IM {process name} /T /F -> where {process name} could be one of the following processes terminated by the malware

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.. %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%\.oracle_jre_usage
• %Application Data%\Oracle
• %User Profile%\fUTkALeaTxM\DdWDtpinxpf
• %User Profile%\fUTkALeaTxM
• %User Profile%\bPCcLfvhpQZ

(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.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.)

Autostart Technique

This Backdoor adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{11 Random Characters} = "%Application Data%\Oracle\bin\javaw.exe" -jar "%User Profile%\bPCcLfvhpQZ\{11 Random Characters}.{6 Random Characters}"

Other System Modifications

This Backdoor modifies the following registry entries:

RegKey: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows NT\SystemRestore
DisableSR = "1"

RegKey: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows NT\SystemRestore
DisableConfig = "1"

It adds the following registry entries to disable the Task Manager:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
DisableTaskMgr = "2"

Backdoor Routine

This Backdoor executes the following commands from a remote malicious user:

• Download Plug-ins
• Download and Execute Files
• Update itself
• Uninstall itself
• Reset Connection
• Terminate Process
• Sceen Capture
• Access Webcam
• Log Keystrokes

It connects to the following websites to send and receive information:

• {BLOCKED}.{BLOCKED}.242.87:1213

Process Termination

This Backdoor terminates the following processes if found running in the affected system's memory:

• acs.exe
• AdAwareDesktop.exe
• AdAwareService.exe
• AdAwareTray.exe
• AgentSvc.exe
• av_task.exe
• AVK.exe
• AVKProxy.exe
• AVKService.exe
• AVKTray.exe
• AVKWCtlx64.exe
• avpmapp.exe
• Bav.exe
• bavhm.exe
• BavSvc.exe
• BavTray.exe
• BavUpdater.exe
• BavWebClient.exe
• BDSSVC.EXE
• BgScan.exe
• BullGuard.exe
• BullGuardBhvScanner.exe
• BullGuardUpdate.exe
• BullGuarScanner.exe
• capinfos.exe
• cavwp.exe
• CertReg.exe
• cis.exe
• CisTray.exe
• clamscan.exe
• ClamTray.exe
• ClamWin.exe
• cmdagent.exe
• ConfigSecurityPolicy.exe
• CONSCTLX.EXE
• coreFrameworkHost.exe
• coreServiceShell.exe
• dragon_updater.exe
• dumpcap.exe
• econceal.exe
• econser.exe
• editcap.exe
• EMLPROXY.EXE
• escanmon.exe
• escanpro.exe
• fcappdb.exe
• FCDBlog.exe
• FCHelper64.exe
• FilMsg.exe
• FilUp.exe
• filwscc.exe
• filwscc.exe
• fmon.exe
• FortiClient.exe
• FortiClient_Diagnostic_Tool.exe
• FortiESNAC.exe
• FortiFW.exe
• FortiProxy.exe
• FortiSSLVPNdaemon.exe
• FortiTray.exe
• FPAVServer.exe
• FProtTray.exe
• FPWin.exe
• freshclam.exe
• freshclamwrap.exe
• fsgk32.exe
• FSHDLL64.exe
• fshoster32.exe
• FSM32.EXE
• FSMA32.EXE
• fsorsp.exe
• fssm32.exe
• GdBgInx64.exe
• GDKBFltExe32.exe
• GDSC.exe
• GDScan.exe
• guardxkickoff_x64.exe
• guardxservice.exe
• iptray.exe
• K7AVScan.exe
• K7CrvSvc.exe
• K7EmlPxy.EXE
• K7FWSrvc.exe
• K7PSSrvc.exe
• K7RTScan.exe
• K7SysMon.Exe
• K7TSecurity.exe
• K7TSMain.exe
• K7TSMngr.exe
• LittleHook.exe
• mbam.exe
• mbamscheduler.exe
• mbamservice.exe
• MCShieldCCC.exe
• MCShieldDS.exe
• MCShieldRTM.exe
• MCS-Uninstall.exe
• mergecap.exe
• MpCmdRun.exe
• MpUXSrv.exe
• MSASCui.exe
• MsMpEng.exe
• MWAGENT.EXE
• MWASER.EXE
• nanoav.exe
• nanosvc.exe
• nbrowser.exe
• nfservice.exe
• NisSrv.exe
• njeeves2.exe
• nnf.exe
• nprosec.exe
• NS.exe
• nseupdatesvc.exe
• nvcod.exe
• nvcsvc.exe
• nvoy.exe
• nwscmon.exe
• ONLINENT.EXE
• op_mon.exe
• OPSSVC.EXE
• ProcessHacker.exe
• procexp.exe
• PSANHost.exe
• PSUAMain.exe
• PSUAService.exe
• psview.exe
• PtSessionAgent.exe
• PtSvcHost.exe
• PtWatchDog.exe
• quamgr.exe
• quamgr.exe
• QUHLPSVC.EXE
• Rawshark.exe
• regedit.exe
• SAPISSVC.EXE
• SASCore64.exe
• SASTask.exe
• SBAMSvc.exe
• SBAMTray.exe
• SBPIMSvc.exe
• SCANNER.EXE
• SCANWSCS.EXE
• schmgr.exe
• scproxysrv.exe
• ScSecSvc.exe
• SDFSSvc.exe
• SDScan.exe
• SDTray.exe
• SDWelcome.exe
• SSUpdate64.exe
• SUPERAntiSpyware.exe
• SUPERDelete.exe
• Taskmgr.exe
• text2pcap.exe
• TRAYICOS.EXE
• TRAYSSER.EXE
• trigger.exe
• tshark.exe
• twsscan.exe
• twssrv.exe
• uiSeAgnt.exe
• uiUpdateTray.exe
• uiWatchDog.exe
• uiWinMgr.exe
• UnThreat.exe
• UserAccountControlSettings.exe
• UserReg.exe
• utsvc.exe
• V3Main.exe
• V3Medic.exe
• V3Proxy.exe
• V3SP.exe
• V3Svc.exe
• V3Up.exe
• VIEWTCP.EXE
• VIPREUI.exe
• virusutilities.exe
• WebCompanion.exe
• wireshark.exe
• Zanda.exe
• Zlh.exe
• zlhh.exe

Other Details

This Backdoor gathers the following information and reports it to its servers:

• Local IP
• Mac Address
• Size of RAM
• Country
• User Name
• OS Name
• OS Version
• If User is Admin
• Java Version