Ransom.Win32.SODINOKIB.SMTH

 Analysis by: Henry Alarcon Jr.
 Modified by: Mohammed Malubay

 ALIASES:

Ransom:Win32/Sodinokibi.S!MSR(MICROSOFT); a variant of Win32/Filecoder.Sodinokibi.B trojan(NOD32); Ransom-Sodnkibi!63A945DA1A63(NAI);

 PLATFORM:

Windows

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

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It avoids encrypting files with the following file extensions.

  TECHNICAL DETAILS

File Size:

118,272 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

14 May 2020

Payload:

Connects to URLs/IPs, Steals information, Encrypts files, Displays message/message boxes

Arrival Details

This Ransomware 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 Ransomware adds the following processes:

  • if OS is 32-bit:
    • powershell {base-64 encoded} → deletes shadow copies
  • if OS is 64-bit:
    • cmd "/c vssadmin.exe Delete Shadows /All /Quiet & bcdedit /set {default} recoveryenabled No & bcdedit /se" → deletes shadow copies

It adds the following mutexes to ensure that only one of its copies runs at any one time:

  • Global\{GUID}

Other System Modifications

This Ransomware adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
Hba = {Hex Bytes}

HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
Xd6U = {Hex Bytes}

HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
kwhIT = {Hex Bytes}

HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
UVeq36 = {Hex Bytes}

HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
lti6i68 = {Appended File Extension}

HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
dDXX9zsq = {Hex Bytes}

It changes the desktop wallpaper by modifying the following registry entries:

HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %User Temp%\{random characters}.bmp

It sets the system's desktop wallpaper to the following image:

Process Termination

This Ransomware terminates the following services if found on the affected system:

  • backup
  • memtas
  • mepocs
  • sophos
  • sql
  • svc$
  • veeam
  • vss

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

  • agntsvc
  • dbeng50
  • dbsnmp
  • encsvc
  • excel
  • firefox
  • infopath
  • isqlplussvc
  • msaccess
  • mspub
  • mydesktopqos
  • mydesktopservice
  • ocautoupds
  • ocomm
  • ocssd
  • onenote
  • oracle
  • outlook
  • powerpnt
  • sqbcoreservice
  • sql
  • steam
  • synctime
  • tbirdconfig
  • thebat
  • thunderbird
  • visio
  • winword
  • wordpad
  • xfssvccon

Information Theft

This Ransomware gathers the following data:

  • Computer name
  • Disk Size
  • Operating System name
  • System Architecture
  • Username
  • Volume Serial-ID
  • Workgroup

Stolen Information

This Ransomware sends the gathered information via HTTP POST to the following URL:

  • https://{domain}/{string 1}/{string 2}/{random characters}.{string 3}
    • where {domain} can be one of the following:
      • {BLOCKED}l.com
      • {BLOCKED}m
      • {BLOCKED}wieweiter.de
      • {BLOCKED}
      • {BLOCKED}ijon.es
      • {BLOCKED}n-alicante.es
      • {BLOCKED}cidentetraficosevilla.es
      • {BLOCKED}omicilio.es
      • {BLOCKED}m
      • {BLOCKED}ywijchen.nl
      • {BLOCKED}nl
      • {BLOCKED}guidores.com
      • {BLOCKED}ation.org
      • {BLOCKED}tlager.de
      • {BLOCKED}heet.fi
      • {BLOCKED}one.com
      • {BLOCKED}th.com
      • {BLOCKED}et.dk
      • {BLOCKED}colat-noir.com
      • {BLOCKED}erencement-naturel-geneve.net
      • {BLOCKED}.au
      • {BLOCKED}ease.com
      • {BLOCKED}
      • {BLOCKED}oning-waalwijk.nl
      • {BLOCKED}72.com
      • {BLOCKED}et
      • {BLOCKED}s.com
      • {BLOCKED}edare.se
      • {BLOCKED}apershow.com
      • {BLOCKED}oveofyou.com
      • {BLOCKED}metics.at
      • {BLOCKED}dogrescue.dog
      • {BLOCKED}st.com
      • {BLOCKED}l63.ru
      • {BLOCKED}rtz.wordpress.com
      • {BLOCKED}rd.com
      • {BLOCKED}stcommittee.org
      • {BLOCKED}tgodis.se
      • {BLOCKED}que247.com
      • {BLOCKED}rgeggi.it
      • {BLOCKED}estview.com
      • {BLOCKED}ublica.es
      • {BLOCKED}lmour.co.uk
      • {BLOCKED}.wordpress.com
      • {BLOCKED}t.ru
      • {BLOCKED}.com
      • {BLOCKED}om
      • {BLOCKED}eetrimming.com
      • {BLOCKED}ealthbenefits.com
      • {BLOCKED}de
      • {BLOCKED}der.de
      • {BLOCKED}ung.com
      • {BLOCKED}s.com
      • {BLOCKED}audit.com
      • {BLOCKED}pc.com
      • {BLOCKED}m
      • {BLOCKED}ralfiberglass.org
      • {BLOCKED}rbuero-wagner.net
      • {BLOCKED}.com.ar
      • {BLOCKED}u.fund
      • {BLOCKED}rieurprojecten.nl
      • {BLOCKED}tdc.com
      • {BLOCKED}efabbro.com
      • {BLOCKED}
      • {BLOCKED}terdam.com
      • {BLOCKED}hen.com
      • {BLOCKED}com
      • {BLOCKED}com
      • {BLOCKED}esportivapolitg.cat
      • {BLOCKED}nanalytics.com
      • {BLOCKED}alextrespaille.fr
      • {BLOCKED}om
      • {BLOCKED}
      • {BLOCKED}ila.com
      • {BLOCKED}.com
      • {BLOCKED}bution.co.uk
      • {BLOCKED}m
      • {BLOCKED}
      • {BLOCKED}liere.de
      • {BLOCKED}.au
      • {BLOCKED}e.com.au
      • {BLOCKED}rch.com
      • {BLOCKED}agenijmegen.nl
      • {BLOCKED}lt
      • {BLOCKED}ung-lu.de
      • {BLOCKED}4.de
      • {BLOCKED}rch.org
      • {BLOCKED}pub.com
      • {BLOCKED}g
      • {BLOCKED}ists.com
      • {BLOCKED}atology.lt
      • {BLOCKED}ernacle.com
      • {BLOCKED}esta.se
      • {BLOCKED}rnosand.se
      • {BLOCKED}org
      • {BLOCKED}ldezonnewijzer.nl
      • {BLOCKED}n.se
      • {BLOCKED}com
      • {BLOCKED}expo.jp
      • {BLOCKED}
      • {BLOCKED}com
      • {BLOCKED}uk
      • {BLOCKED}se
      • {BLOCKED}thsystem.org
      • {BLOCKED}ce.se
      • {BLOCKED}m
      • {BLOCKED}medicinespecialists.com
      • {BLOCKED}boo-bikes.org
      • {BLOCKED}ersicherungsvergleich.de
      • {BLOCKED}m
      • {BLOCKED}.com
      • {BLOCKED}n
      • {BLOCKED}omdotcom.wordpress.com
      • {BLOCKED}.com
      • {BLOCKED}hing.fr
      • {BLOCKED}akkramen.nl
      • {BLOCKED}com
      • {BLOCKED}es.eu
      • {BLOCKED}onsulting.ch
      • {BLOCKED}derlebnis.haus
      • {BLOCKED}ca.com
      • {BLOCKED}rotechnik.at
      • {BLOCKED}e.org
      • {BLOCKED}aldelsa.com
      • {BLOCKED}d.com
      • {BLOCKED}s.de
      • {BLOCKED}om
      • {BLOCKED}
      • {BLOCKED}ionsarchitect.guru
      • {BLOCKED}orros.com
      • {BLOCKED}ga.net
      • {BLOCKED}ts.net
      • {BLOCKED}ond50.com
      • {BLOCKED}wegleitner.at
      • {BLOCKED}m
      • {BLOCKED}r.online
      • {BLOCKED}s.it
      • {BLOCKED}e.com
      • {BLOCKED}com
      • {BLOCKED}ine.ro
      • {BLOCKED}ng.net
      • {BLOCKED}wntown.com
      • {BLOCKED}eplaces.com
      • {BLOCKED}com
      • {BLOCKED}d.com.au
      • {BLOCKED}ie-nim.nl
      • {BLOCKED}ovations.com
      • {BLOCKED}e-wuppertal.de
      • {BLOCKED}t-muenchen-west.de
      • {BLOCKED}nanza.com
      • {BLOCKED}-roses.com
      • {BLOCKED}.com.au
      • {BLOCKED}.com
      • {BLOCKED}ry.com
      • {BLOCKED}ylawfirm.com
      • {BLOCKED}men.de
      • {BLOCKED}ny.com
      • {BLOCKED}re.net
      • {BLOCKED}a.com
      • {BLOCKED}slenders.com
      • {BLOCKED}rler.com
      • {BLOCKED}oclub.co.uk
      • {BLOCKED}com
      • {BLOCKED}m
      • {BLOCKED}ightservices.com.au
      • {BLOCKED}yeclinic.com.au
      • {BLOCKED}eenreich.de
      • {BLOCKED}l
      • {BLOCKED}.biz
      • {BLOCKED}
      • {BLOCKED}
      • {BLOCKED}rs.com
      • {BLOCKED}rand.com
      • {BLOCKED}era.com
      • {BLOCKED}net.it
      • {BLOCKED}igest.com
      • {BLOCKED}u
      • {BLOCKED}.de
      • {BLOCKED}each.org
      • {BLOCKED}r.com
      • {BLOCKED}usa.com
      • {BLOCKED}unpoker.com
      • {BLOCKED}r.org
      • {BLOCKED}om
      • {BLOCKED}nn.com
      • {BLOCKED}usesalonvt.com
      • {BLOCKED}s.nl
      • {BLOCKED}lduz.es
      • {BLOCKED}sicfest.com
      • {BLOCKED}nd.com
      • {BLOCKED}tr
      • {BLOCKED}rg
      • {BLOCKED}.com
      • {BLOCKED}salud.com
      • {BLOCKED}lega.com
      • {BLOCKED}com
      • {BLOCKED}rce.net
      • {BLOCKED}au
      • {BLOCKED}.com
      • {BLOCKED}com
      • {BLOCKED}er.com
      • {BLOCKED}oudroux-photographie.fr
      • {BLOCKED}aysage.fr
      • {BLOCKED}eeiro.com
      • {BLOCKED}e
      • {BLOCKED}fr
      • {BLOCKED}rry.com
      • {BLOCKED}hael.net
      • {BLOCKED}ebuffetcourses.com
      • {BLOCKED}erescorts.co.uk
      • {BLOCKED}tra.es
      • {BLOCKED}g
      • {BLOCKED}.com
      • {BLOCKED}dhtx.com
      • {BLOCKED}ainsltd.co.uk
      • {BLOCKED}o.online
      • {BLOCKED}t.com
      • {BLOCKED}
      • {BLOCKED}dgeadvisors.com
      • {BLOCKED}hine.com
      • {BLOCKED}king.com
      • {BLOCKED}z
      • {BLOCKED}iveclassroom.org
      • {BLOCKED}ses.com
      • {BLOCKED}prises.com
      • {BLOCKED}boatbuilding.com
      • {BLOCKED}nd-stories.com
      • {BLOCKED}-lave-linge.fr
      • {BLOCKED}ddingkansas.com
      • {BLOCKED}solutionsstrategies.com
      • {BLOCKED}ement.de
      • {BLOCKED}ers.trade
      • {BLOCKED}ce.com
      • {BLOCKED}ctadenacimiento.com
      • {BLOCKED}k.com
      • {BLOCKED}o.uk
      • {BLOCKED}trition.com
      • {BLOCKED}tels.com
      • {BLOCKED}
      • {BLOCKED}dles.com
      • {BLOCKED}ro.com
      • {BLOCKED}m
      • {BLOCKED}cox.net
      • {BLOCKED}ermnl.com
      • {BLOCKED}e.fun
      • {BLOCKED}tineacademy.com
      • {BLOCKED}coutgroup.org
      • {BLOCKED}1.com
      • {BLOCKED}aves.co.uk
      • {BLOCKED}.com
      • {BLOCKED}sion.co.uk
      • {BLOCKED}efellowship.church
      • {BLOCKED}.com
      • {BLOCKED}h.co.uk
      • {BLOCKED}ps.se
      • {BLOCKED}
      • {BLOCKED}om
      • {BLOCKED}lanatoliquido.online
      • {BLOCKED}uitosnainternet.com
      • {BLOCKED}.com
      • {BLOCKED}ces.co.uk
      • {BLOCKED}
      • {BLOCKED}e.com
      • {BLOCKED}g.co.uk
      • {BLOCKED}
      • {BLOCKED}n.com
      • {BLOCKED}rmann-architektur-und-planung.ch
      • {BLOCKED}.info
      • {BLOCKED}system.dk
      • {BLOCKED}d.com
      • {BLOCKED}inistries.com
      • {BLOCKED}lbeing.org.uk
      • {BLOCKED}erministries.com
      • {BLOCKED}s-in-europe.com
      • {BLOCKED}lothingcompany.com
      • {BLOCKED}nnel.com
      • {BLOCKED}.com
      • {BLOCKED}t
      • {BLOCKED}rporatelaw.com
      • {BLOCKED}com.ar
      • {BLOCKED}.cat
      • {BLOCKED}sulting.at
      • {BLOCKED}sgroup.com
      • {BLOCKED}skernnoordwijk.nl
      • {BLOCKED}elp.com
      • {BLOCKED}
      • {BLOCKED}ils.com
      • {BLOCKED}costablanca.es
      • {BLOCKED}nclients.fr
      • {BLOCKED}m
      • {BLOCKED}
      • {BLOCKED}rg
      • {BLOCKED}
      • {BLOCKED}ts.com
      • {BLOCKED}
      • {BLOCKED}e
      • {BLOCKED}owco.com
      • {BLOCKED}itario.biz
      • {BLOCKED}
      • {BLOCKED}ebsforschung.de
      • {BLOCKED}icologia.es
      • {BLOCKED}
      • {BLOCKED}id.com.ua
      • {BLOCKED}epepper.com
      • {BLOCKED}ervice.com
      • {BLOCKED}
      • {BLOCKED}v.com
      • {BLOCKED}rednitzhembach.de
      • {BLOCKED}om.wordpress.com
      • {BLOCKED}m
      • {BLOCKED}com
      • {BLOCKED}
      • {BLOCKED}.org
      • {BLOCKED}
      • {BLOCKED}.com
      • {BLOCKED}
      • {BLOCKED}tive.com
      • {BLOCKED}sHomes.com
      • {BLOCKED}com
      • {BLOCKED}
      • {BLOCKED}ngcoffee.com
      • {BLOCKED}.nl
      • {BLOCKED}
      • {BLOCKED}pugh.com
      • {BLOCKED}tiger.de
      • {BLOCKED}com.au
      • {BLOCKED}.nl
      • {BLOCKED}frica.com
      • {BLOCKED}mulhouse.fr
      • {BLOCKED}to.com
      • {BLOCKED}n
      • {BLOCKED}
      • {BLOCKED}tates.org
      • {BLOCKED}ervices.nl
      • {BLOCKED}
      • {BLOCKED}e
      • {BLOCKED}promo.com
      • {BLOCKED}online
      • {BLOCKED}om
      • {BLOCKED}
      • {BLOCKED}
      • {BLOCKED}iscall.com
      • {BLOCKED}rveys.com
      • {BLOCKED}
      • {BLOCKED}m
      • {BLOCKED}m.wordpress.com
      • {BLOCKED}io.com
      • {BLOCKED}sadvokaterne.dk
      • {BLOCKED}ation.fr
      • {BLOCKED}.pl
      • {BLOCKED}he-pfarrgemeinde-tuniberg.de
      • {BLOCKED}fishing.com
      • {BLOCKED}echnologies.com
      • {BLOCKED}irllc.com
      • {BLOCKED}.at
      • {BLOCKED}k
      • {BLOCKED}aison.info
      • {BLOCKED}aryoutdoors.com
      • {BLOCKED}ich27.de
      • {BLOCKED}s18.de
      • {BLOCKED}h.com
      • {BLOCKED}
      • {BLOCKED}40.com
      • {BLOCKED}.com
      • {BLOCKED}om
      • {BLOCKED}ttransfers.net
      • {BLOCKED}om
      • {BLOCKED}gmachines.com
      • {BLOCKED}-loans.com
      • {BLOCKED}ions.com
      • {BLOCKED}at
      • {BLOCKED}-ziegler.de
      • {BLOCKED}culoma.info
      • {BLOCKED}m
      • {BLOCKED}ingvfcomplet.be
      • {BLOCKED}eb.com
      • {BLOCKED}recard.com
      • {BLOCKED}e-marke.de
      • {BLOCKED}week.pl
      • {BLOCKED}d-u.com
      • {BLOCKED}ntservices.com
      • {BLOCKED}.com
      • {BLOCKED}aar.com
      • {BLOCKED}byjessica.com
      • {BLOCKED}rum.com
      • {BLOCKED}
      • {BLOCKED}.hk
      • {BLOCKED}uca.org.au
      • {BLOCKED}e.ca
      • {BLOCKED}a.org
      • {BLOCKED}lth.live
      • {BLOCKED}edia.es
      • {BLOCKED}on.com
      • {BLOCKED}gels.nl
      • {BLOCKED}utachterpraxis.de
      • {BLOCKED}rkschaften.de
      • {BLOCKED}brgrs.com
      • {BLOCKED}ldingllc.com
      • {BLOCKED}
      • {BLOCKED}
      • {BLOCKED}regal.org
      • {BLOCKED}g.gt
      • {BLOCKED}s.com
      • {BLOCKED}
      • {BLOCKED}fair.com
      • {BLOCKED}pl
      • {BLOCKED}.info
      • {BLOCKED}unciakrilikbandung.com
      • {BLOCKED}ompte-rouen.fr
      • {BLOCKED}om
      • {BLOCKED}alisten.se
      • {BLOCKED}de
      • {BLOCKED}l
      • {BLOCKED}ler.de
      • {BLOCKED}tkompas.nl
      • {BLOCKED}uli.com
      • {BLOCKED}rketing.com
      • {BLOCKED}ts.co.nz
      • {BLOCKED}s.info
      • {BLOCKED}s.wordpress.com
      • {BLOCKED}
      • {BLOCKED}rnes.es
      • {BLOCKED}covery.com
      • {BLOCKED}com
      • {BLOCKED}
      • {BLOCKED}ent.se
      • {BLOCKED}optimaldentalcare.com
      • {BLOCKED}
      • {BLOCKED}ch
      • {BLOCKED}e.com
      • {BLOCKED}s.com
      • {BLOCKED}yssinet.fr
      • {BLOCKED}lhoerodrigues.com.br
      • {BLOCKED}org
      • {BLOCKED}anagement.com
      • {BLOCKED}e.com
      • {BLOCKED}wordpress.com
      • {BLOCKED}now.site
      • {BLOCKED}-llc.com
      • {BLOCKED}k.de
      • {BLOCKED}rimages.org
      • {BLOCKED}up.com
      • {BLOCKED}com
      • {BLOCKED}ogram.wordpress.com
      • {BLOCKED}om
      • {BLOCKED}tindo.com
      • {BLOCKED}
      • {BLOCKED}willtravel2017.wordpress.com
      • {BLOCKED}rkout.com
      • {BLOCKED}
      • {BLOCKED}artstudio.gallery
      • {BLOCKED}lsky.com
      • {BLOCKED}vluchtnewyork.nl
      • {BLOCKED}n.com
      • {BLOCKED}com
      • {BLOCKED}per.com
      • {BLOCKED}.com
      • {BLOCKED}staefa.ch
      • {BLOCKED}auer.at
      • {BLOCKED}es.co
      • {BLOCKED}com
      • {BLOCKED}secrets.com.au
      • {BLOCKED}oweb.com
      • {BLOCKED}outdoors.net
      • {BLOCKED}uthasc.com
      • {BLOCKED}
      • {BLOCKED}de
      • {BLOCKED}.dk
      • {BLOCKED}e.com
      • {BLOCKED}studio.com
      • {BLOCKED}r.com
      • {BLOCKED}
      • {BLOCKED}adova.it
      • {BLOCKED}.com.br
      • {BLOCKED}al.at
      • {BLOCKED}s.com
      • {BLOCKED}fon.hr
      • {BLOCKED}l
      • {BLOCKED}e-entfernen.de
      • {BLOCKED}uppe.de
      • {BLOCKED}hert.de
      • {BLOCKED}reteil.com
      • {BLOCKED}tion.com
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      • {BLOCKED}tid.dk
      • {BLOCKED}are.com
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      • {BLOCKED}e
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      • {BLOCKED}
      • {BLOCKED}a.com
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      • {BLOCKED}p
      • {BLOCKED}
      • {BLOCKED}om
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      • {BLOCKED}de
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      • {BLOCKED}
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      • {BLOCKED}
      • {BLOCKED}net
      • {BLOCKED}m
      • {BLOCKED}nter.org
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      • {BLOCKED}tific.com
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      • {BLOCKED}om
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      • {BLOCKED}l
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      • {BLOCKED}
      • {BLOCKED}.jp
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      • {BLOCKED}om
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      • {BLOCKED}i.co.th
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      • {BLOCKED}thers.de
      • {BLOCKED}eboer.de
      • {BLOCKED}l.de
      • {BLOCKED}1.net
      • {BLOCKED}im.de
      • {BLOCKED}tives.nl
      • {BLOCKED}com
      • {BLOCKED}a
      • {BLOCKED}
      • {BLOCKED}
      • {BLOCKED}
      • {BLOCKED}salon.com
      • {BLOCKED}nline
      • {BLOCKED}tsu.net
      • {BLOCKED}com
      • {BLOCKED}ru
      • {BLOCKED}m.hk
      • {BLOCKED}ns.org
      • {BLOCKED}.org
    • where {string 1} can be one of the following:
      • admin
      • content
      • data
      • include
      • news
      • static
      • uploads
      • wp-content
    • where {string 2} can be one of the following:
      • assets
      • game
      • graphic
      • image
      • images
      • pics
      • pictures
      • temp
      • tmp
    • where {string 3} can be one of the following:
      • jpg
      • png
      • gif

Other Details

This Ransomware adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant

It does the following:

  • Avoids encrypting machines with the following keyboard layout language:
    • ARMENIAN_ARMENIA
    • AZERI_CYRILLIC
    • BELARUSIAN_BELARUS
    • ESTONIAN_ESTONIA
    • GEORGIAN_GEORGIA
    • KAZAK_KAZAKHSTAN
    • KYRGYZ_KYRGYZSTAN
    • LATVIAN_LATVIA
    • LITHUANIAN_LITHUANIA
    • PERSIAN_IRAN
    • ROMANIAN_ROMANIA
    • RUSSIAN_RUSSIA
    • TAJIK_TAJIKISTAN
    • TATAR_RUSSIA
    • TURKMEN_TURKMENISTAN
    • UKRAINIAN_UKRAINE
    • UZBEK_CYRILLIC
  • It searches for files to encrypt in remote drives, fixed drives, removable drives, and network resources.

It accepts the following parameters:

  • -silent → skips the following:
    • Termination of blacklisted processes and services
    • Removal of shadow copies
  • -path → specifies directory to be encrypted
  • -nolocal → avoids encrypting fixed and removable drives
  • -nolan → avoids encrypting network and shared drives
  • -fast → fast encryption mode

Ransomware Routine

This Ransomware avoids encrypting files with the following strings in their file name:

  • autorun.inf
  • boot.ini
  • bootfont.bin
  • bootsect.bak
  • desktop.ini
  • iconcache.db
  • ntldr
  • ntuser.dat
  • ntuser.dat.log
  • ntuser.ini
  • thumbs.db
  • {Appended File Extension}-readme.txt

It avoids encrypting files found in the following folders:

  • $recycle.bin
  • $windows.~bt
  • $windows.~ws
  • appdata
  • application data
  • boot
  • google
  • intel
  • mozilla
  • msocache
  • perflogs
  • program files
  • program files (x86)
  • programdata
  • system volume information
  • tor browser
  • windows.old

It appends the following extension to the file name of the encrypted files:

  • .{random characters}

It leaves text files that serve as ransom notes containing the following text:

  • {Encrypted Directory}\{Appended File Extension}-readme.txt

It avoids encrypting files with the following file extensions:

  • 386
  • adv
  • ani
  • bat
  • bin
  • cab
  • cmd
  • com
  • cpl
  • cur
  • deskthemepack
  • diagcab
  • diagcfg
  • diagpkg
  • dll
  • drv
  • exe
  • hlp
  • hta
  • icl
  • icns
  • ico
  • ics
  • idx
  • key
  • ldf
  • lnk
  • lock
  • mod
  • mpa
  • msc
  • msi
  • msp
  • msstyles
  • msu
  • nls
  • nomedia
  • ocx
  • prf
  • ps1
  • rom
  • rtp
  • scr
  • shs
  • spl
  • sys
  • theme
  • themepack
  • wpx

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.490.08

FIRST VSAPI PATTERN DATE:

12 Nov 2019

VSAPI OPR PATTERN File:

15.491.00

VSAPI OPR PATTERN Date:

13 Nov 2019

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

     
  • Troj.Win32.TRX.XXPE50FFF035

Step 2

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 3

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 4

Restart in Safe Mode

[ Learn More ]

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_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
    • Hba = {Hex Bytes}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
    • Xd6U = {Hex Bytes}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
    • kwhIT = {Hex Bytes}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
    • UVeq36 = {Hex Bytes}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
    • lti6i68 = {Appended File Extension}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Facebook_Assistant
    • dDXX9zsq = {Hex Bytes}

Step 6

Delete this registry key

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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\Facebook_Assistant
    • (null)

Step 7

Search and delete these files

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There may be some files 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.
  • {Encrypted Directory}\{Appended File Extension}-readme.txt

Step 8

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.SODINOKIB.SMTH. 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

Reset your Desktop properties

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Step 10

Restore encrypted files from backup.

Step 11

Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.SODINOKIB.SMTH. 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 the following Trend Micro Support pages for more information:


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