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Trojan.PWS.Siggen2.33921

Added to the Dr.Web virus database: 2019-10-10

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • <SYSTEM32>\tasks\p-3-9-34-1036232990-1095321218-1338527096-9053\{x28ez41r-dg2k-mu38-y2y3-ioenqwu7lnzr}
Malicious functions
Reads files which store third party applications passwords
  • <LS_APPDATA>\google\chrome\user data\default\login data
  • <LS_APPDATA>\google\chrome\user data\default\web data
Modifies file system
Creates the following files
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\enu_87fe973e4b3559a72535
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.module.exe.0
  • %TEMP%\aut473d.tmp
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\information.txt
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\cookies\mozilla firefox (6).txt
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\telegram\d877f783d5d3ef8c1
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\telegram\инструкция по установке.txt
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\telegram\d877f783d5d3ef8c\map0
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\steam\config\dialogconfig.vdf
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\steam\инструкция по установке.txt
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\steam\config\config.vdf
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\screen.jpg
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.sqlite3.module.dll
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.sqlite3.module.dll.0
  • %TEMP%\autf776.tmp
  • <LS_APPDATA>\microsoft\windows\history\low\history.ie5\index.dat
  • %APPDATA%\microsoft\windows\cookies\low\index.dat
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\0xhgi3zc\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\ig3cuafy\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\gfe0lxz2\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\fns51cp7\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\index.dat
  • <LS_APPDATA>\microsoft\windows\history\low\history.ie5\desktop.ini
  • <LS_APPDATA>\microsoft\windows\history\low\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\desktop.ini
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.module.exe
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\enu_87fe973e4b3559a72535.7z
Sets the 'hidden' attribute to the following files
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\fns51cp7\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\gfe0lxz2\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\ig3cuafy\desktop.ini
  • <LS_APPDATA>\microsoft\windows\<INETFILES>\low\content.ie5\0xhgi3zc\desktop.ini
  • <LS_APPDATA>\microsoft\windows\history\low\history.ie5\desktop.ini
  • <LS_APPDATA>\microsoft\windows\history\low\desktop.ini
Deletes the following files
  • %TEMP%\autf776.tmp
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.sqlite3.module.dll.0
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.sqlite3.module.dll
  • %TEMP%\aut473d.tmp
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.module.exe.0
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.module.exe
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\information.txt
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\screen.jpg
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\cookies\mozilla firefox (6).txt
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\steam\инструкция по установке.txt
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\steam\config\config.vdf
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\steam\config\dialogconfig.vdf
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\telegram\d877f783d5d3ef8c1
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\telegram\инструкция по установке.txt
  • %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\telegram\d877f783d5d3ef8c\map0
Moves itself
  • from <Full path to file> to %APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.exe
Network activity
Connects to
  • '45.#9.19.4':8696
UDP
  • DNS ASK ap#.##legram.org
  • DNS ASK ip##i.co
Miscellaneous
Creates and executes the following
  • '%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.module.exe' a -y -mx9 -ssw "%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\ENU_87FE973E4B3559A72535.7z" "%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\*"
  • '%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.module.exe' a -y -mx9 -ssw "%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\ENU_87FE973E4B3559A72535.7z" "%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\1\*"' (with hidden window)
  • '%WINDIR%\syswow64\attrib.exe' +s +h "%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc"' (with hidden window)
  • '%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc\kbd101a.exe' ' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\rundll32.exe' "%WINDIR%\syswow64\WININET.dll",DispatchAPICall 1
  • '%WINDIR%\syswow64\attrib.exe' +s +h "%APPDATA%\amd64_microsoft-windows-security-ngc-ctnrsvc"
  • '<SYSTEM32>\taskeng.exe' {3BD6A1F7-02B6-47E0-9329-C4D1C22E159D} S-1-5-21-1960123792-2022915161-3775307078-1001:gzyuucktns\user:Interactive:[1]

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.
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    • 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);
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