Worm.Win32.DORKBOT.B0002LKR19

January 20, 2020
 ALIASES:

Trojan-FQKD!EC253FEE7FC2 (McAfee); Trojan-Ransom.Win32.Foreign.myji (Kaspersky); Troj/AutoG-A (Sophos)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • 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 disables Task Manager, Registry Editor, and Folder Options.

  TECHNICAL DETAILS

File Size:

1,654,787 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

20 Jan 2020

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 adds the following processes:

  • "%Application Data%\SMWRN.exe"
  • %Application Data%\SMWRN.exe
  • "%Application Data%\Windows\winlogon.exe"
  • %Application Data%\Windows\winlogon.exe
  • netsh advfirewall firewall add rule name="ImgBurn" dir=in action=allow description="Multimedia suite" program="%Application Data%\Microsoft\lsass.exe" enable=yes
  • %Application Data%\Microsoft\lsass.exe /k %Application Data%\SMWRN.exe
  • %System%\reg.exe REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Windows Defender" /t REG_SZ /d "%Application Data%\Windows\winlogon.exe" /f
  • %Program Files%\Internet Explorer\iexplore.exe
  • "%System Root%\Program Files\Internet Explorer\IEXPLORE.EXE"
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:2060 CREDAT:275457 /prefetch:2

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

It creates the following folders:

  • %Application Data%\Microsoft\Windows\PrivacIE
  • %Application Data%\Microsoft\Windows\IECompatUACache
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active
  • %Application Data%\Microsoft\Windows\DNTException
  • %AppDataLocal%\Microsoft\Internet Explorer\DomainSuggestions
  • %Application Data%\Microsoft\Windows\IECompatCache
  • %Application Data%\Windows

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

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
MSWUpdate = "%Application Data%\Microsoft\lsass.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Windows Defender = "%Application Data%\Windows\winlogon.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Zqucub = "%Application Data%\Zqucub.exe"

Other System Modifications

This Worm modifies the following file(s):

  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\82DF2NUK\widgets.outbrain[1].xml
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\82DF2NUK\www.msn[1].xml

It deletes the following files:

  • %AppDataLocal%Low\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico

(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Run
MSWUpdate = "%Application Data%\Microsoft\lsass.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
MSWUpdate = "%Application Data%\Microsoft\lsass.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows NT\CurrentVersion\
Winlogon
Userinit = "%System%\userinit.exe,%Application Data%\Microsoft\lsass.exe"

HKEY_CURRENT_USER\Software\VB and VBA Program Settings\
Microsoft\4842
F = "True"

It creates the following registry entry(ies) to disable Task Manager, Registry Tools and Folder Options:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
MSWUpdate = "%Application Data%\Microsoft\lsass.exe"

Dropping Routine

This Worm drops the following files:

  • %AppDataLocal%\Microsoft\Internet Explorer\imagestore\joppu72\imagestore.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\DomainSuggestions\en-US.6
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\3UYAQU1F\contextual.media[1].xml
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{245F4723-AC98-11E9-8692-005056BC0C34}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\MSIMGSIZ.DAT
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\PDYB5D8B\tag.idsync.analytics.yahoo[1].xml
  • %Application Data%\Zqucub.exe
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\82DF2NUK\widgets.outbrain[1].xml
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{315FE2DD-AC98-11E9-8692-005056BC0C34}.dat
  • %Application Data%\Microsoft\lsass.exe
  • %Application Data%\SMWRN.exe
  • %Application Data%\Windows\winlogon.exe
  • %User Temp%\ROPBH.txt
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\82DF2NUK\www.msn[1].xml
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{245F4725-AC98-11E9-8692-005056BC0C34}.dat

Other Details

This Worm connects to the following possibly malicious URL:

  • http://www.{BLOCKED}ool.com
  • http://go.{BLOCKED}oft.com/fwlink/?LinkId=69157
  • http://www.{BLOCKED}n.com/?ocid=iehp
  • http://static-global-s-msn-com.{BLOCKED}zed.net/{random path}?{random characters}
  • http://o.{BLOCKED}n.com/ads/adswrappermsni.js
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGpOUO.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGUW9m.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BB1kc8s.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBX09Xi.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXibW.img?{random characters}
  • http://www.{BLOCKED}n.com/en-us/homepage/irisbannerajax?{random characters}
  • http://c.{BLOCKED}n.com/c.gif?{random characters}
  • http://c.{BLOCKED}g.com/c.gif?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/hp-wus/sc/ea/4996b9.woff
  • http://static-global-s-msn-com.{BLOCKED}zed.net/hp-wus/sc/c6/cfdbd9.png
  • http://at.{BLOCKED}a.com/{random path}
  • http://adserver.{BLOCKED}h.advertising.com/{random path}
  • http://acdn.{BLOCKED}s.com/ast/ast.js
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAyxkRJ.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AABp9vq.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBUvpML.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWY4f6.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBjLpNF.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWWZrx.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJ7LLn.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXDyV.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJHDFW.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBtOBsY.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBiuSr7.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBO6J5d.img?{random characters}
  • http://m.{BLOCKED}s.com/ut/v3
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZVhF.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBm2Dvk.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAywGC0.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBUDFrs.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBUDFvK.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBUE38v.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAILYH4.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAIM6SY.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWMoEM.img?{random characters}
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/AAyW7G9.img?{random characters}
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/AAEHtW3.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXK1C.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZOyo.img?h=75&w=100&m=6&q=60&u=t&o=t&l=f
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/AA565dd.img?{random characters}
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/BBTUVWY.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXhtC.img?h=75&w=100&m=6&q=60&u=t&o=t&l=f
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZzTx.img?h=75&w=100&m=6&q=60&u=t&o=t&l=f
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/AAyhxXG.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZMx9.img?h=75&w=100&m=6&q=60&u=t&o=t&l=f
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/BB90I6E.img?{random characters}
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/AA8I0Dg.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZOxk.img?h=75&w=100&m=6&q=60&u=t&o=t&l=f
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/BB1ba5a.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZZst.img?h=75&w=100&m=6&q=60&u=t&o=t&l=f
  • http://img-s-msn-com.{BLOCKED}zed.net/tenant/amp/entityid/BBTg0rh.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWRHMC.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZjd1.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBRKvit.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXbIF.img?{random characters}
  • http://eb2.{BLOCKED}t.com/mapuid?{random characters}
  • http://eb2.{BLOCKED}t.com/getuid?ld=1&gdpr=0&cmp_cs=
  • http://www.{BLOCKED}n.com/en-us/homepage/npsajax?ver=20191112_19585423
  • http://cdn.{BLOCKED}a.com/TaboolaCookieSyncScript.js
  • http://widgets.{BLOCKED}in.com/external/publishers/msn/MSNIdSync.js
  • http://c.{BLOCKED}g.com/c.gif?Red3=MSOATH_pd
  • http://ib.{BLOCKED}s.com/async_usersync_file
  • http://acdn.{BLOCKED}s.com/dmp/async_usersync.html
  • http://sync.{BLOCKED}in.com/uidmapjsonp?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJsy5L.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWPxWn.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BB90I6E.img?{random characters}
  • http://lax1-ib.{BLOCKED}s.com/it?{random characters}
  • http://confiant.{BLOCKED}n.com/?{random characters}
  • http://usw-lax.{BLOCKED}r.org/bid/feedback/appnexus?{random characters}
  • http://ib.{BLOCKED}s.com/async_usersync?cbfn=queuePixels
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AA3dLwz.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWqEe0.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXsuw.img?{random characters}
  • http://acdn.{BLOCKED}s.com/dmp/async_usersync.html?{random characters}
  • http://{BLOCKED}4.149.69/rd_log?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZpUH.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAFCvkt.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXHYv.img?{random characters}
  • http://choices.{BLOCKED}rc.com/cap?{random characters}
  • http://cdn.{BLOCKED}s.com/v/s/181/trk.js
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWX6vB.img?{random characters}
  • http://lax1-ib.{BLOCKED}s.com/vevent?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXN8R.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AA2CNVO.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZvxh.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGpnHa.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXDV1.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXTfC.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBm8qVB.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWYoph.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBNvr53.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZJ6c.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAywHbG.img?{random characters}
  • http://ib.{BLOCKED}s.com/async_usersync?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBTSqcj.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAtKMMs.img?{random characters}
  • http://banner.{BLOCKED}ising.com/ads/msn3.html
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWFoem.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWMwLJ.img?{random characters}
  • http://www.{BLOCKED}n.com/en-us/homepage/api/pagedatarequest?{random characters}
  • http://g.{BLOCKED}g.com/uac/request?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWM6fL.img?{random characters}
  • http://g.{BLOCKED}g.com/uac/response?{random characters}
  • http://static.{BLOCKED}eat.com/js/{BLOCKED}eat.js
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWX8JX.img?{random characters}
  • http://ping.{BLOCKED}eat.net/ping?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXg2i.img?{random characters}
  • http://tag.{BLOCKED}p.advertising.com/{BLOCKED}p.js
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXud9.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAISUGy.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAEysvT.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AADeDDC.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWXAUT.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBPT12E.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAywSGf.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWtbVi.img?{random characters}
  • http://odr.{BLOCKED}1.com/t/v2/sync?{random characters}
  • http://js.{BLOCKED}s.com/thetradedeskv275874568748/moatad.js
  • http://cm.{BLOCKED}g.doubleclick.net/pixel?{random characters}
  • http://insight.{BLOCKED}r.org/enduser/pie/?{random characters}
  • http://insight.{BLOCKED}r.org/enduser/moat/?{random characters}
  • http://lax1-ib.{BLOCKED}s.com/rd_log?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWWSex.img?{random characters}
  • http://choices.{BLOCKED}rc.com/get?name=admarker-icon-tr.png
  • http://choices.{BLOCKED}rc.com/get?name=admarker-full-tr.png
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWqL4X.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AA9z9sE.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWEW1t.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJtGFO.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWY3u9.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAuAlST.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWZVKY.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBX01Og.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJG5AQ.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJIsn8.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBDkHpc.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAHrs7d.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAEeSjX.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWOZYG.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAA8PBm.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAHU5z6.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AA9YFNL.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWY3G6.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBLFv5R.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWObHR.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAxlHiU.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAG7wZP.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAxspu1.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/BBWIcSg.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AADetNw.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AADemI3.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGpDJm.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGpJTA.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGpMwR.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJFyIo.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJFwn2.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJFwnH.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAJFmE1.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGw23J.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGw4Q8.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGvLL9.img?{random characters}
  • http://static-global-s-msn-com.{BLOCKED}zed.net/img-resizer/tenant/amp/entityid/AAGvV00.img?{random characters}
  • http://www.{BLOCKED}atool.com
  • http://maid.{BLOCKED}p.biz
  • http://api.{BLOCKED}g.com
  • http://www.{BLOCKED}g.com
  • http://linkmaker.{BLOCKED}s.apple.com
  • http://sb.{BLOCKED}ardresearch.com
  • http://web.{BLOCKED}x.data.msn.com
  • http://msn.{BLOCKED}dome.com
  • http://widgets.{BLOCKED}e.com
  • http://contextual.{BLOCKED}a.net
  • http://login.{BLOCKED}e.com
  • http://px.{BLOCKED}s.linkedin.com
  • http://www.{BLOCKED}in.com
  • http://p.{BLOCKED}totic.com
  • http://hbx.{BLOCKED}a.net
  • http://pr-bh.{BLOCKED}p.yahoo.com
  • http://srtb.{BLOCKED}n.com
  • http://www.{BLOCKED}tagservices.com
  • http://protected-by.{BLOCKED}m.io
  • http://lg3.{BLOCKED}a.net
  • http://gum.{BLOCKED}o.com
  • http://idsync.{BLOCKED}n.com
  • http://tags.{BLOCKED}i.com
  • http://b1sync.{BLOCKED}a.com
  • http://sync-jp.{BLOCKED}s.net
  • http://dpm.{BLOCKED}x.net
  • http://{BLOCKED}o.com
  • http://match.{BLOCKED}r.org
  • http://beacon.{BLOCKED}d.net
  • http://aa.{BLOCKED}n.com
  • http://rtb.{BLOCKED}vr.com
  • http://x.{BLOCKED}tch.net
  • http://cd.{BLOCKED}p.com
  • http://dis.{BLOCKED}o.com
  • http://e.{BLOCKED}x.addthis.com
  • http://px.{BLOCKED}inks.com
  • http://dsp.{BLOCKED}1.adition.com
  • http://id.{BLOCKED}m.com
  • http://{BLOCKED}k.com
  • http://ps.{BLOCKED}a.net
  • http://loadus.{BLOCKED}or.com
  • http://sync.{BLOCKED}trl.net
  • http://track.{BLOCKED}wads.com
  • http://u.{BLOCKED}w.metadsp.co.uk
  • http://stags.{BLOCKED}i.com
  • http://x.{BLOCKED}x.addthis.com
  • http://choices.{BLOCKED}e.com
  • http://hblg.{BLOCKED}a.net
  • http://cvision.{BLOCKED}a.net
  • http://dmp.{BLOCKED}ik.com
  • http://cms.{BLOCKED}ics.yahoo.com
  • http://tag.{BLOCKED}c.analytics.yahoo.com
  • http://service.{BLOCKED}c.analytics.yahoo.com
  • http://ad.{BLOCKED}r.org
  • http://secure-gl.{BLOCKED}ldwide.com
  • http://www.{BLOCKED}ok.com
  • http://geo.{BLOCKED}s.com
  • http://px.{BLOCKED}s.com
  • http://mb.{BLOCKED}s.com
  • http://sqm.{BLOCKED}try.microsoft.com
  • http://ieonline.{BLOCKED}oft.com

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Identify and terminate files detected as Worm.Win32.DORKBOT.B0002LKR19

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Enable Registry Editor, Task Manager, and Folder options

[ Learn More ]
By doing this step, you also enable other applications/programs disabled by this malware/grayware/spyware. Screen reader support enabled.

Step 5

Delete this registry value

[ Learn More ]

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
    • MSWUpdate = "%Application Data%\Microsoft\lsass.exe"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • Windows Defender = "%Application Data%\Windows\winlogon.exe"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • Zqucub = "%Application Data%\Zqucub.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run
    • MSWUpdate = "%Application Data%\Microsoft\lsass.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run
    • MSWUpdate = "%Application Data%\Microsoft\lsass.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon
    • Userinit = "%System%\userinit.exe,%Application Data%\Microsoft\lsass.exe"
  • In HKEY_CURRENT_USER\Software\VB and VBA Program Settings\Microsoft\4842
    • F = "True"

Step 6

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %AppDataLocal%\Microsoft\Internet Explorer\imagestore\joppu72\imagestore.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\DomainSuggestions\en-US.6
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\3UYAQU1F\contextual.media[1].xml
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{245F4723-AC98-11E9-8692-005056BC0C34}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\MSIMGSIZ.DAT
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\PDYB5D8B\tag.idsync.analytics.yahoo[1].xml
  • %Application Data%\Zqucub.exe
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\82DF2NUK\widgets.outbrain[1].xml
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{315FE2DD-AC98-11E9-8692-005056BC0C34}.dat
  • %Application Data%\Microsoft\lsass.exe
  • %Application Data%\SMWRN.exe
  • %Application Data%\Windows\winlogon.exe
  • %User Temp%\ROPBH.txt
  • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\82DF2NUK\www.msn[1].xml
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{245F4725-AC98-11E9-8692-005056BC0C34}.dat

Step 7

Search and delete these folders

[ Learn More ]
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.
  • %Application Data%\Microsoft\Windows\PrivacIE
  • %Application Data%\Microsoft\Windows\IECompatUACache
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active
  • %Application Data%\Microsoft\Windows\DNTException
  • %AppDataLocal%\Microsoft\Internet Explorer\DomainSuggestions
  • %Application Data%\Microsoft\Windows\IECompatCache
  • %Application Data%\Windows

Step 8

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Worm.Win32.DORKBOT.B0002LKR19. 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.

    • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\82DF2NUK\widgets.outbrain[1].xml
    • %AppDataLocal%\Microsoft\Internet Explorer\DOMStore\82DF2NUK\www.msn[1].xml

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.

  • %AppDataLocal%Low\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico


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