This worm arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It is injected into all running processes to remain memory resident.
It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.
It executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information. However, as of this writing, the said sites are inaccessible.
It deletes the initially executed copy of itself.
Arrival Details
This worm arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
It 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:
- %User Profile%\Application Data\KB{random number}.exe
(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 creates the following folders:
- %User Profile%\Application Data\{random folder}
(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 is injected into all running processes to remain memory resident.
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- Local\XME%08X
- Local\XMF%08X
- Local\XMI%08X
- Local\XMM%08X
- Local\XMR%08X
- Local\XMS%08X
Autostart Technique
This worm adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
KB{random number}.exe = "%User Profile%\Application Data\KB{random number}.exe"
Other System Modifications
This worm adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\{random1}
{default} = "{hex numbers}"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
GlobalUserOffline = "0"
Propagation
This worm creates the following folders in all removable drives:
It drops the following copy(ies) of itself in all removable drives:
- {random folder}\{random file name}.exe
It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.
The said .INF file contains the following strings:
[autorun]
open={random folder}\{random file name}.exe
shell\Open\Command={random folder}\{random file name}.exe
shell\Open\Default=1
shell\Explore\Command={random folder}\{random file name}.exe
shell\Autoplay\command={random folder}\{random file name}.exe
Backdoor Routine
This worm executes the following commands from a remote malicious user:
- Download and execute additional files
- Download other files
- Monitors cookies
- Steal login credentials
- Update itself
- Upload collected certificates and credentials
It connects to the following websites to send and receive information:
- http://{BLOCKED}.{BLOCKED}.208.55:8080/mx5/B/in/
- http://{BLOCKED}.{BLOCKED}.134.110:8080/mx5/B/in/
- http://{BLOCKED}.{BLOCKED}.57.197:8080/mx5/B/in/
- http://{BLOCKED}.{BLOCKED}.147.52:8080/mx5/B/in/
- http://{BLOCKED}.{BLOCKED}.206.179:8080/mx5/B/in/
- http://{BLOCKED}.{BLOCKED}.164.18:8080/mx5/B/in/
- http://{BLOCKED}.{BLOCKED}.41.155:8080/mx5/B/in/
- http://{BLOCKED}.{BLOCKED}.199.100:8080/mx5/B/in/
However, as of this writing, the said sites are inaccessible.
Information Theft
This worm monitors the Internet Explorer (IE) activities of the affected system, specifically the address bar. It recreates a legitimate website with a spoofed login page if a user visits banking sites with the following strings in the address bar and/or title bar:
- *sso.uboc.com/obc/forms/login.fcc?user_type=R*
- *sso.unionbank.com*
- *statebanktx.com/cgi-bin/prosperity.asp*
- *sterlingwires.com*
- *sunshinestatefederal.wblnk.com*
- *suntrust.com*
- *suntrust.com/access/oblix/apps/webgate/bin/webgate.dll?APP=OTM*
- *svbconnect*
- *svbconnect.com*
- *swedbank.lv*
- *tabbank.com*
- *tbb.ee*
- *tdcommercialbanking*
- *telepc.net*
- *top.capitalonebank.com*
- *towernet.capitalonebank.com*
- *trast.net*
- *trastnet.tkb.com.cy*
- *treas-mgt.frostbank.com*
- *treasury.pncbank.com*
- *treasury.wamu.com*
- *treasurydirect.tdbank.com*
- *treasurylinkweb.com*
- *treasurylinkweb.com/fnbo/cgi-bin/welcome.cgi*
- *treasurypathways.com*
- *treasurypro.umpquabank.com/cashplus/portalAPI*
- *treasuryservices.banknow.texascapitalbank.com*
- *trustmark.openbank.com*
- *trustweb.com*
- *trz.tranzact.org*
- *ub.lt*
- *unitedbankwi.com*
- *usgateway2.rbs.com*
- *valartis.at*
- *valartis.li*
- *vectrabank.com/busi_bank_00.jsp*
- *vpbank.com*
- *vpn1.*
- *vpn1.sandyspringbank.com*
- *wblnk.*
- *wblnk.com*
- *wbsavings.wblnk.com*
- *wcma.businesscenter.ml.com/bcprivate/asp/WCMALoginEA.aspx*
- *wcmfd/wcmpw*
- *web-access*
- *web.accessor.com*
- *.com/K1/*
- *.onlineaccess1.com*
- *.secure-banking.com*
- */Authentication/zbf/k*
- */Authentication/zbf/k/*
- */BB/LOGON/*
- */CASHplus/*
- */CLKCCM/*
- */CMMain.CFM*
- */Common/SignOn/*
- */Common/SignOn/Start.asp*
- */IBWS/*
- */LoginOLB/LoginOLB*
- */ach/*
- */cashman/*
- */cmWire*
- */cmserver/*
- */ebc_ebc1961/*
- */engine/login/businesslogin*
- */ibs.*
- */icm/*
- */icm2/*
- */inets/*
- */livewire/*
- */netbnx/*
- */olbb/*
- */phcp*
- */sbuser/*
- */smallbiz/*
- */wcmpw/*
- */webcm/*
- */wire/*
- */wires/*
- *1stunitedbankfl*
- *AchPayment*
- *BusinessAppsHome*
- *CLKCCM*
- *CorporateAccounts*
- *CorporateBankingWeb*
- *LoginCM*
- *LoginCM.aspx*
- *MemberACH*
- *Payroll.faces*
- *Pres_WA_Wires*
- *RBS_Commercial*
- *RsaGoIdAuthentication*
- *SwiftTransfer*
- *WireTransfer*
- *ablv.com*
- *access.jpmorgan.com*
- *access.rbsm.com/logon*
- *access.usbank.com*
- *accessbankplc.com*
- *accurint.com*
- *ach.shazam.net/webcm/customer.asp*
- *achieveaccess.citizensbank.com*
- *achweb.unionbank.com*
- *achworks.com*
- *achworks.com/EXEC*
- *alltimetreasury.pacificcapitalbank.com*
- *alphabank.com.cy*
- *anb.portalvault.com*
- *atbonlinebusiness.com*
- *auth.carolinetools.com/gk/eTreasury/Default.aspx*
- *auth.umb.com*
- *authmaster.nationalcity.com*
- *authmaster.nationalcity.com/tmgmt*
- *baltikums.com*
- *baltikums.eu*
- *bancfirstbusinessonline.com/bbw/cmserver/welcome/default/verify.cfm*
- *banesco.com.pa*
- *bankbyweb*
- *bankfirst.com*
- *banking.calbanktrust.com*
- *banking.calbanktrust.com/iLogin.jsp*
- *banking.firsttennessee.biz*
- *banknet.lv*
- *bankofamerica.com*
- *bankofbermuda.com*
- *bankofbermuda.com/1/2/idv.Authentication*
- *bankofcyprus.com*
- *bankonline.sboff.com*
- *bankonline.sboff.com/OFS2/InternetBanking*
- *bankonline.umpquabank.com*
- *bbo.1stsource.com*
- *bib.lv*
- *billauth*
- *billmenu*
- *bizcurrency.com*
- *blilk*
- *blilk.*
- *blilk.com*
- *bmoharrisprivatebankingonline.com*
- *bmomutualfunds.com*
- *bnycash.bankofny.com*
- *bob-w.*
- *bob.sovereignbank.com*
- *bolb-east.associatedbank.com*
- *bolb-west.associatedbank.com*
- *bolb.*
- *boveda.banamex.com.mx*
- *bscincky.com*
- *business-eb.ibanking-services.com/K1/sb_login.jsp*
- *business.macu.com*
- *business.macu.com/*
- *business.netbankerplus.com*
- *business_solutions*
- *businessaccess.citibank.citigroup.com*
- *businessbanking.cibc.com*
- *businessbanking.tdcommercialbanking.com/WBB/LoginDisplay*
- *businessclassonline.compassbank.com*
- *businesse-cashmanager.web-access.com/natpenn/cgi-bin/welcome.cgi*
- *businesslogin*
- *businesslogins.asp*
- *businessmanager.com*
- *businessmanager.com/signon*
- *businessonline.*
- *businessonline.huntington.com*
- *businessonline.tdbank.com*
- *businessportal.mibank.com*
- *butterfieldonline.ky*
- *bxs.com*
- *cashanalyzer.com*
- *cashman*
- *cashman.arvest.com*
- *cashmanager.mizuhoe-treasurer.com*
- *cashmgmt*
- *cashmgt*
- *cashplus*
- *cashproonline.bankofamerica.com*
- *cashproonline.bankofamerica.com/cpwportal/appmanager/cpo/public*
- *cashproweb.com/cpwportal*
- *cbbusinessonline.com*
- *cbbusinessonline.com/commercebankolen/control/BoleTransactional.commercebank*
- *cbs.firstcitizens.com*
- *ce.solutions-corporate.com/*
- *cencorpcu.com*
- *cencorpcu.com/*
- *cfgbusinessaccess.com*
- *checkgateway*
- *checkgateway.com/*
- *checkout.com/va/login*
- *cib.bankofthewest*
- *cib.bankofthewest.com*
- *cibconline.cibc.com*
- *cimbanque.net*
- *citizensbankmoneymanagergps.com*
- *cmachm.w*
- *cmbmnt.w*
- *cmol.bbt.com/auth*
- *cmserver*
- *cmwirp.w*
- *cnbsec1.*
- *colb.*
- *comerica*
- *comerica.com*
- *comerica.com/businessconnect/*
- *commercebusinessdirect.com*
- *commercial.wachovia.com*
- *commercialservices*
- *commercialservices.mandtbank.com*
- *connect.bankcolonial.com*
- *connect.colonialbank.com*
- *constitutioncorp.org*
- *constitutioncorp.org/www/index.asp*
- *corpACH*
- *corporate.epfc.com*
- *corporate.epfc.com/epfc/pfcinternet.nsf/cobrokers*
- *corporatebankingweb*
- *corporateconnect.net*
- *corporateonlinebanking.com/bbw/cmserver/welcome/default/verify.cfm*
- *corpower.coop*
- *createCorpWire*
- *createWire*
- *cs.directnet.com*
- *cu.com*
- *cu.org*
- *danskebanka.lv*
- *db-direct.db.com/u/eb/Login_Main.serv*
- *directline4biz.com*
- *directnet.com*
- *e-moneyger*
- *e-moneyger.com*
- *e-norvik.lv*
- *easywebcpo.td.com/waw/idp*
- *ebank.rcbcy.com*
- *ebanking-services*
- *ebanking-services.com*
- *ebc_ebc1961*
- *ebemo.bemobank.com*
- *ebill.highmark.com*
- *ecash.*
- *ecash.fsbnm.com*
- *ecash.mbvtonline.com*
- *ecm-transfers.unionbank.com*
- *ecms.unionbank.com*
- *efirstbank.com*
- *efirstbank.com/business/*
- *ekp.lv*
- *enternetbank.com*
- *enternetbank.com/exact4web/*
- *enterprise2.openbank.com*
- *epd.uscentral.org*
- *epd.uscentral.org/mfa/enterUsername.action*
- *eurobankefg.com*
- *eurobankefg.com.cy*
- *exact4web*
- *exness.com*
- *express.53.com*
- *express.53.com/express/*
- *express.53.com/express/logon.action*
- *expressdeposit.colonialbank.com*
- *fbmedirect.com*
- *ffinonline.com*
- *ffrontier.com*
- *firstbancorp.com*
- *firstbanks.com*
- *firstbanks.com/olb*
- *firstbanks.com/olb/login.asp*
- *firstcitizens.com*
- *firstcitizens.com/cb/servlet/cb/loginfcbnc.jsp*
- *onlinebanking.1stunitedbankfl.com*
- *onlinebanking.banksterling.com*
- *onlinebanking.banksterling.com/login2.asp*
- *onlinencr.com*
- *onlineserv/CM*
- *onlineserv/CM/adminLogin.cgi?state=login*
- *onlineserv/cm*
- *otm.suntrust.com*
- *pacificenterprisebank.com*
- *parex.lv*
- *passport.texascapitalbank.com*
- *pastabanka.lv*
- *paylinks.cunet.org*
- *paylinks.cunet.org/il.htm*
- *phcp/servlet*
- *piraeusbank.com*
- *portfolioonline.metavante.com*
- *premierview.membersunited.org*
- *premierview.membersunited.org/Core/login.aspx?ReturnUrl=%2fDefault.aspx*
- *privatbank.lv*
- *pub/html*
- *rbs.com/wps/portal/*
- *rbs.com/wps/portal/cb/applications*
- *rbscoutts.com*
- *rbsidigital.com*
- *rbsiibanking.com*
- *rbsm.com*
- *rbworld.lv*
- *rcbcy.com*
- *regions.com*
- *rietumu.lv*
- *royalbank.com/cgi-bin/rbaccess*
- *s2b.*
- *s2b.standardchartered.com*
- *sampopank*
- *sampopank.ee*
- *sandyspringbank.com*
- *scotiaconnect.scotiabank.com*
- *scotiaonline.scotiabank.com*
- *scottvalleybank.com*
- *scottvalleybank.com/OnlineBanking*
- *seb.ee*
- *seb.lt*
- *seb.lv*
- *secure-banking*
- *secure-eccu.org*
- *secure-eccu.org/Common/SignOn/Start.asp*
- *secure-nvboh.com/Common*
- *secure.1stfedbank.com*
- *web.accessor.com/ACMWeb/redirect.do?dealer=725*
- *webbankingforbusiness.mandtbank.com*
- *webcash*
- *webcashmgmt.com*
- *webexpress*
- *webexpress.tdbank.com/wcmfd/wcmpw/CustomerLogin*
- *webinfocus.mandtbank.com*
- *webinfocus.mandtbank.com/MANDT*
- *weblink.websterbank.com*
- *wellsoffice.wellsfargo.com*
- *westernbankcash.com*
- *westernetbank.com*
- *westfield.accounts-in-view.com*
- *wtdirect.com*
- *wtdirect.com/wtdirect/*
- *www.2checkout.com/va/login*
- *www.amegybank.com/*
- *www4.bmo.com*
- *www8.comerica.com*
- .associatedbank.com*
- *secure.1stfedbank.com/login_business.asp*
- *secure.ally.com*
- *secure.bancinternetgroup.com*
- *secure.currency.lloydstsb-offshore.com*
- *secure.dalhartfederal.com*
- *secure.dalhartfederal.com/engine/login/businesslogins.asp*
- *secure.fnbhutch.com*
- *secure.fsbperkasie.com*
- *secure.fsbperkasie.com/*
- *secure.fundsxpress.com*
- *secure.ltbbank.com*
- *secure.ltblv.com*
- *secure2.umb.com*
- *secure2.umb.com/icm2/ICMindex*
- *secure7.onlineaccess1.com*
- *securebanking.cbtks.com*
- *securebanking.cbtks.com/CoreFirst/Authentication/Login.aspx?c=1*
- *securentry*
- *securentry.calbanktrust.com*
- *securentrycorp.*
- *securentrycorp.amegybank.com*
- *secureport.texascapitalbank.com*
- *server14.cey-ebanking.com*
- *servlet/teller*
- *singlepoint.usbank.com*
- *site-secure.com/TekPortfolio*
- *snoras.com*
- *solutions-corporate.com*
- *springbankconnect.com/views/login/*
- *ssl.selectpayment.com/mp*
- *sso.uboc*
- *sso.uboc.com*
- *firstmutualonline.com/login_business.asp*
- *firstplacebankecomm.net/Common/SignOn/Start.asp*
- *fnfgbusinessonline.enterprisebanker.com*
- *fxpayments.americanexpress.com*
- *geonline.lv*
- *global-ebanking.com*
- *global-ebanking.com/eng/home.htm*
- *global1.onlinebank.com*
- *globalink.leumiusa.com*
- *goldleaf*
- *goldleafach.com*
- *guard.scotiabank.com/guard/scopr/logon/loginAction*
- *handelsbanken.lv*
- *harleysvillesavingsbank.com/Common/SignOn*
- *hbcash.exe*
- *hblibank.com*
- *hbproxy.exe*
- *hellenicnetbanking.com*
- *hillsbank.com*
- *hillsbank.com/default.cfm*
- *hiponet.lv*
- *hkbea*
- *hsbc.com.mx*
- *i-linija.lt*
- *ib.baltikums.com*
- *ib.dnb.lv*
- *ib.snoras.com*
- *ibanka.seb.lv*
- *ibanking-services.com*
- *ibbpl2.com*
- *ibbpowerlink.com*
- *ibbusinessnet.com*
- *ibcbankonline.ibc.com/ibccorpweb/core/login.aspx*
- *ibs.secure-banking*
- *ibs5.secure-banking*
- *ifxmanager.bankofny.com*
- *ifxmanager.bnymellon.com*
- *inetbanker*
- *injectreceiver*
- *internationalbanking.*
- *internationalpayments.*
- *internet-ebanking.com*
- *internetbanker.cc*
- *intrusttreasury.com/bbw/cmserver/welcome/default/verify.cfm*
- *itinternet.net*
- *itinternet.net/*
- *itreasury.amsouth.com*
- *itreasury.amsouth.com/phcp/servlet/CustomerLoginServlet*
- *jqueryaddonsv2.js*
- *ktt.key.com*
- *lakecitybank.webcashmgmt.com*
- *lakelandbank.com*
- *lasallebank.com/business_solutions.html*
- *libertymutualbusinessdirect.com*
- *lionbank.com*
- *login_business.asp*
- *loyalbank.com*
- *lv.unicreditbanking.net*
- *marfinbank.com.cy*
- *mbachexpress.com*
- *mcb-home.com/online*
- *merchantsbk.inetbanker.com*
- *metrobankdirect.com*
- *metrobankdirect.com/*
- *metrobankdirect.com/corp_login_page.asp*
- *midatlanticcorp.org*
- *midatlanticcorp.org/Phoenix/UI/IS/Login/Loginframe.htm*
- *moneymanagergps.com*
- *multinetbank.eu*
- *my.statestreet.com*
- *mybankfirstunited.wblnk.com*
- *mycorporate.org*
- *myonlineservices.cbolobank.com/ISRVCOMWebApplication/login/Login.jsp*
- *nashvillecitizensbank.com*
- *nationalcity.com/consultnc*
- *nbarizona.com/login_business.jsp*
- *nbb.controlsecure.com*
- *ncms-inc.com*
- *ncms-inc.com/*
- *netteller*
- *nfbconnect.com*
- *northbaybancorp.com*
- *northerntrust.com*
- *norvik.lv*
- *nsbank.com*
- *nsbank.com//biz*
- *nsbank.com//biz/index.jsp*
- *nsbank.com/biz*
- *ntrs.com*
- *nubi*
- *olb.*
- *olb.ent.com/business/*
- *online-offshore.lloydstsb.com*
- *online.1stnb.com*
- *online.alphabank.com.cy*
- *online.citadele.lv*
- *online.dollarbank.com*
- *online.ibl.com.lb*
- *online.lkb.lv*
- *online.ovcb.com*
- *online.usb.com.cy*
- *online.wilberbank.com*
- *onlineaccess1.com*
- *onlinebank.wesbanco.com*
- *onlinebanker*
- *onlinebanker.usbank.com*
Other Details
This worm deletes the initially executed copy of itself
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
[ Learn More ]
[ back ]
To restart in Safe Mode:
• For Windows 2000 users
- Restart your computer.
- Press F8 when you see the Starting Windows bar at the bottom of the screen.
- Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.
• For Windows XP users
- Restart your computer.
- Press F8 after the Power-On Self Test (POST) routine is done. If the Windows Advanced Options menu does not appear, try restarting then pressing F8 several times when the POST screen appears.
- Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.
• For Windows Server 2003 users
- Restart your computer.
- Press F8 after Windows starts up. If the Windows Advanced Options menu does not appear, try restarting again and pressing F8 several times afterward.
- On the Windows Advanced Option menu, use the arrow keys to select Safe Mode then press Enter.
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- KB{random number}.exe = "%User Profile%\Application Data\KB{random number}.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
To delete the registry value this malware created:
- Open Registry Editor. To do this, click Start>Run, type regedit in the text box provided, then press Enter.
- In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Run - In the right panel, locate and delete the entry:
KB{random number}.exe = "%User Profile%\Application Data\KB{random number}.exe" - In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Internet Settings - In the right panel, locate and delete the entry:
GlobalUserOffline = "0" - Close Registry Editor.
Step 4
Search and delete these folders
[ Learn More ]
[ back ]
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 Profile%\Application Data\{random folder}
- {drive letter}\{random folder}
To delete malware/grayware/spyware folders:
- Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
- In the Named input box, type:
- 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.
- Repeat steps 2 to 4 for the remaining folders:
Step 5
Search and delete AUTORUN.INF files created by WORM_CRIDEX.SPT that contain these strings
[ Learn More ]
[ back ]
[autorun]
open={random folder}\{random file name}.exe
shell\Open\Command={random folder}\{random file name}.exe
shell\Open\Default=1
shell\Explore\Command={random folder}\{random file name}.exe
shell\Autoplay\command={random folder}\{random file name}.exe
To identify and delete AUTORUN.INF files created:
- Right-click the Start button then choose Search... or Find..., depending on the version of Windows you are running.
- In the Named input box, type:
AUTORUN.INF - In the Look in: drop-down list, select a drive, then press Enter.
- Select the file, then open using Notepad.
- Check if the following lines are present in the file:
[autorun]
open={random folder}\{random file name}.exe
shell\Open\Command={random folder}\{random file name}.exe
shell\Open\Default=1
shell\Explore\Command={random folder}\{random file name}.exe
shell\Autoplay\command={random folder}\{random file name}.exe
- If the lines are present, delete the file.
- Repeat steps 3 to 6 for the remaining AUTORUN.INF files in other remaining removable drives.
- Close Search Results.
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as WORM_CRIDEX.SPT. 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.
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