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Profil

Trojan.Siggen9.16675

Added to the Dr.Web virus database: 2020-03-02

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\CAE3e4TsH] 'Start' = '00000001'
  • [<HKLM>\System\CurrentControlSet\Services\CAE3e4TsH] 'ImagePath' = '%WINDIR%\SysWOW64\CAE3e4TsH.sys'
Malicious functions
To complicate detection of its presence in the operating system,
modifies the following system settings:
  • DNS server to '114.114.114.114'
  • DNS server to '<DNS_SERVER>'
Injects code into
the following user processes:
  • f58cbddece4.exe
Modifies file system
Creates the following files
  • %HOMEPATH%\desktop\<File name>.lnk
  • <DRIVERS>\9rttvkoq.sys
  • %WINDIR%\syswow64\cae3e4tsh.sys
  • <Current directory>\d3f7d71ce\caedc9a4\beada7\4640c2ttk.dll
  • <Current directory>\d3f7d71ce\caedc9a4\f0630c\53a6klcb1.dll
  • <Current directory>\d3f7d71ce\c51374aa972\a682zuwps.dll
  • <Current directory>\d3f7d71ce\j5bb4fbe605\e874pilfg.dll
  • <Current directory>\d3f7d71ce\dbd7f8\a063dgfib.dll
  • <Current directory>\d3f7d71ce\a5a34a8ac33\2083vztvn.dll
  • <Current directory>\d3f7d71ce\ee2ad561\4461kdf7a.dll
  • %WINDIR%\serviceprofiles\networkservice\appdata\locallow\microsoft\cryptneturlcache\metadata\f0accf77cdcbff39f6191887f6d2d357
  • <Current directory>\d3f7d71ce\h32963583\586ffice7.dll
  • <Current directory>\d3f7d71ce\caedc9a4\beada7\3eefdhad6.dll
  • <Current directory>\d3f7d71ce\caedc9a4\a80a440\b890qknfh.dll
  • <Current directory>\d3f7d71ce\caedc9a4\j42121adee\27d9koile.dll
  • <Current directory>\d3f7d71ce\caedc9a4\aa33ce8a9\3a0borkng.dll
  • <Current directory>\d3f7d71ce\caedc9a4\ifddac4078\d134hjcf8.dll
  • <Current directory>\d3f7d71ce\caedc9a4\f0630c\3a74y0sum.dll
  • <Current directory>\d3f7d71ce\h7c65c
  • %LOCALAPPDATA%\microsoft\windows\history\history.ie5\mshist012020030120200302\index.dat
  • %ProgramFiles(x86)%\mozilla thunderbird\f58cbddece4.exe
  • <Current directory>\d3f7d71ce\caedc9a4\a2431511\7616jlfid.dll
  • %WINDIR%\serviceprofiles\networkservice\appdata\locallow\microsoft\cryptneturlcache\content\f0accf77cdcbff39f6191887f6d2d357
Deletes the following files
  • %LOCALAPPDATA%\microsoft\windows\history\history.ie5\mshist012020030120200302\index.dat
  • <Current directory>\d3f7d71ce\h7c65c
  • <Current directory>\d3f7d71ce\caedc9a4\f0630c\3a74y0sum.dll
  • <Current directory>\d3f7d71ce\caedc9a4\beada7\3eefdhad6.dll
  • <DRIVERS>\etc\hosts
Substitutes the following files
  • <Current directory>\d3f7d71ce\h7c65c
  • <Current directory>\d3f7d71ce\caedc9a4\f0630c\3a74y0sum.dll
  • <Current directory>\d3f7d71ce\caedc9a4\beada7\3eefdhad6.dll
Network activity
TCP
HTTP GET requests
  • http://hh.####ong666.com.com/hanhua.txt
  • http://si###torage.com/question/PrsProt64.rar
  • http://x.##2.us/x.cer
  • http://os#.##iyungx.com/data.php?t=#####
  • http://os#.##iyungx.com/xinlistj.rar
  • http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
  • http://os#.##iyungx.com/listh.rar
  • http://os#.##iyungx.com/exeFeatureCode.rar
  • http://co####5.51yes.com/sa.htm?id###############################################################################################################################################################...
  • http://os#.##iyungx.com/updata64.php?t=#######
  • http://os#.##iyungx.com/updata64.rar
  • http://o.##2.us//MEowSDBGMEQwQjAJBgUrDgMCGgUABBSLwZ6EW5gdYc9UaSEaaLjjETNtkAQUv1%2B30c7dH4b0W1Ws3NcQwg6piOcCCQCnDkpMNIK3fw%3D%3D
  • http://oc##.###tg2.amazontrust.com/MFQwUjBQME4wTDAJBgUrDgMCGgUABBSIfaREXmfqfJR3TkMYnD7O5MhzEgQUnF8A36oB1zArOIiiuG1KnPIRkYMCEwZ%2FlEoqJ83z%2BsKuKwH5CO65xMY%3D
  • http://oc##.####ca1.amazontrust.com/MFQwUjBQME4wTDAJBgUrDgMCGgUABBRPWaOUU8%2B5VZ5%2Fa9jFTaU9pkK3FAQUhBjMhTTsvAyUlC4IWZzHshBOCggCEwZ%2FlFeFh%2Bisd96yUzJbvJmLVg0%3D
  • http://cr#.####ca1.amazontrust.com/rootca1.crl
  • http://si###torage.com/question/B64d.rar
  • http://si###torage.cn/question/dpkf15980.rar
  • http://pc####e.cnzz.com/app.gif?&c###########################
  • http://si###loud.net/question/pl35231.rar
  • http://cn##.mmstat.com/9.gif?ab##################
  • http://c.##zz.com/core.php?we###################
  • http://si###loud.net/question/vc8
  • http://z7.#nzz.com/stat.htm?id###################################################################################################################################################################...
  • http://s1#.#nzz.com/z_stat.php?id#############################
  • http://os#.##iyungx.com/md5exe.rar
  • http://co####5.51yes.com/click.aspx?id##################
  • http://lo#####.yaotongji.com:8080/ via lo#####.yaotongji.com
  • http://hl.####engxuefuzhu.com/
  • http://bj##me.cn/nt.asp
  • http://si###torage.cn/question/dns.txt
  • http://si###torage.cn/question/data.txt
  • http://www.ba##u.com/
  • http://oc##.###1b.amazontrust.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQz9arGHWbnBV0DFzpNHz4YcTiFDQQUWaRmBlKge5WSPKOUByeWdFv5PdACEAdDanwPzhhRia1inuyQjLA%3D
  • http://cr#.####b.amazontrust.com/sca1b.crl
  • 'co#.com':443
  • UDP
    • DNS ASK si###torage.cn
    • DNS ASK cr#.####ca1.amazontrust.com
    • DNS ASK oc##.####ca1.amazontrust.com
    • DNS ASK oc##.###tg2.amazontrust.com
    • DNS ASK o.##2.us
    • DNS ASK os#.##iyungx.com
    • DNS ASK x.##2.us
    • DNS ASK si###torage.com
    • DNS ASK pc####e.cnzz.com
    • DNS ASK cn##.mmstat.com
    • DNS ASK si###loud.net
    • DNS ASK c.##zz.com
    • DNS ASK z7.#nzz.com
    • DNS ASK s1#.#nzz.com
    • DNS ASK co####5.51yes.com
    • DNS ASK co#.com
    • DNS ASK lo#####.yaotongji.com
    • DNS ASK hl.####engxuefuzhu.com
    • DNS ASK bj##me.cn
    • DNS ASK ti######.beijing-time.org
    • DNS ASK hh.####ong666.com.com
    • DNS ASK ba##u.com
    • DNS ASK oc##.###1b.amazontrust.com
    • DNS ASK cr#.####b.amazontrust.com
    Miscellaneous
    Searches for the following windows
    • ClassName: 'MS_AutodialMonitor' WindowName: ''
    • ClassName: 'MS_WebCheckMonitor' WindowName: ''
    Creates and executes the following
    • '%ProgramFiles(x86)%\mozilla thunderbird\f58cbddece4.exe' WfCSeCZ4ex4kgR6Seh92KDx7JntO
    • '%WINDIR%\syswow64\ipconfig.exe' /flushdns' (with hidden window)
    Executes the following
    • '%WINDIR%\syswow64\ipconfig.exe' /flushdns

    Curing recommendations

    1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
    2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
    Download Dr.Web

    Download by serial number

    Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

    After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

    Download Dr.Web

    Download by serial number

    1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
    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:
      • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
      • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
      • Switch off your device and turn it on as normal.

    Find out more about Dr.Web for Android