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Trojan.Siggen34.17405

Added to the Dr.Web virus database: 2026-09-21

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • <SYSTEM32>\tasks\microsoft\windows\application experience\tasktrigger
  • <SYSTEM32>\tasks\microsoft\windows\application experience\tasktrigger2
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion:
  • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath C:\,D:\,<Drive name for removable media>:\
Modifies file system
Creates the following files
  • %TEMP%\nsec017.tmp
  • %TEMP%\nsuc16f.tmp\nsexec.dll
  • %TEMP%\nsuc16f.tmp\system.dll
  • %TEMP%\nsuc16f.tmp\nh_f6fc92d9618c.nhc
  • %APPDATA%\comain_ev2f79\ev2f79.exe.nhpart_f6fc92d9618c
  • %TEMP%\nsuc16f.tmp\nh_9e6c3786fcd4.nhc
  • %APPDATA%\comain_ev2f79\ntrin.er.nhpart_9e6c3786fcd4
  • %TEMP%\nsuc16f.tmp\nh_7e6fc832474b.nhc
  • %APPDATA%\comain_ev2f79\otrm.oi.nhpart_7e6fc832474b
  • %TEMP%\nsuc16f.tmp\nh_5b066b1843b9.nhc
  • %APPDATA%\comain_ev2f79\yinma.vc.nhpart_5b066b1843b9
  • %TEMP%\nsuc16f.tmp\nh_114cbc113a9b.nhc
  • %APPDATA%\comain_ev2f79\dxyvnb.ti.nhpart_114cbc113a9b
  • %TEMP%\windowsz.txt
  • %TEMP%\nsuc16f.tmp\nh_80e964c871c4.nhc
  • %APPDATA%\comain_ev2c34\ev2c34.exe.nhpart_80e964c871c4
  • %TEMP%\nsuc16f.tmp\nh_5ff8cf562dd9.nhc
  • %APPDATA%\comain_ev2c34\bnymir.ou.nhpart_5ff8cf562dd9
  • %TEMP%\nsuc16f.tmp\nh_70ffc2b875a5.nhc
  • %APPDATA%\comain_ev2c34\bteuns.pt.nhpart_70ffc2b875a5
  • %TEMP%\nsuc16f.tmp\nh_db7e9d6410cf.nhc
  • %APPDATA%\comain_ev2c34\cmrsk.ce.nhpart_db7e9d6410cf
  • %TEMP%\nsuc16f.tmp\nh_15e595a9976a.nhc
  • %APPDATA%\comain_ev2c34\fhkan.oi.nhpart_15e595a9976a
  • %TEMP%\nsuc16f.tmp\nh_76994d912e87.nhc
  • %APPDATA%\comain_ev2c34\ap.asin.nhpart_76994d912e87
  • %APPDATA%\comain_ev2c34\qbdrf\dr.dll
  • %ProgramFiles(x86)%\community\baiduwangpan.exe
  • %TEMP%\uk_tmp.txt
  • %APPDATA%\bnymir.ou
  • %APPDATA%\ap.asin
Deletes following files that it created itself
  • %TEMP%\nsuc16f.tmp\nh_f6fc92d9618c.nhc
  • %TEMP%\nsuc16f.tmp\nh_9e6c3786fcd4.nhc
  • %TEMP%\nsuc16f.tmp\nh_7e6fc832474b.nhc
  • %TEMP%\nsuc16f.tmp\nh_5b066b1843b9.nhc
  • %TEMP%\nsuc16f.tmp\nh_114cbc113a9b.nhc
  • %TEMP%\nsuc16f.tmp\nh_80e964c871c4.nhc
  • %TEMP%\nsuc16f.tmp\nh_5ff8cf562dd9.nhc
  • %TEMP%\nsuc16f.tmp\nh_70ffc2b875a5.nhc
  • %TEMP%\nsuc16f.tmp\nh_db7e9d6410cf.nhc
  • %TEMP%\nsuc16f.tmp\nh_15e595a9976a.nhc
  • %TEMP%\nsuc16f.tmp\nh_76994d912e87.nhc
  • %TEMP%\nsuc16f.tmp\nsexec.dll
  • %TEMP%\nsuc16f.tmp\system.dll
Moves the following files
  • from %APPDATA%\comain_ev2f79\ev2f79.exe.nhpart_f6fc92d9618c to %APPDATA%\comain_ev2f79\ev2f79.exe
  • from %APPDATA%\comain_ev2f79\ntrin.er.nhpart_9e6c3786fcd4 to %APPDATA%\comain_ev2f79\ntrin.er
  • from %APPDATA%\comain_ev2f79\otrm.oi.nhpart_7e6fc832474b to %APPDATA%\comain_ev2f79\otrm.oi
  • from %APPDATA%\comain_ev2f79\yinma.vc.nhpart_5b066b1843b9 to %APPDATA%\comain_ev2f79\yinma.vc
  • from %APPDATA%\comain_ev2f79\dxyvnb.ti.nhpart_114cbc113a9b to %APPDATA%\comain_ev2f79\dxyvnb.ti
  • from %APPDATA%\comain_ev2c34\ev2c34.exe.nhpart_80e964c871c4 to %APPDATA%\comain_ev2c34\ev2c34.exe
  • from %APPDATA%\comain_ev2c34\bnymir.ou.nhpart_5ff8cf562dd9 to %APPDATA%\comain_ev2c34\bnymir.ou
  • from %APPDATA%\comain_ev2c34\bteuns.pt.nhpart_70ffc2b875a5 to %APPDATA%\comain_ev2c34\bteuns.pt
  • from %APPDATA%\comain_ev2c34\cmrsk.ce.nhpart_db7e9d6410cf to %APPDATA%\comain_ev2c34\cmrsk.ce
  • from %APPDATA%\comain_ev2c34\fhkan.oi.nhpart_15e595a9976a to %APPDATA%\comain_ev2c34\fhkan.oi
  • from %APPDATA%\comain_ev2c34\ap.asin.nhpart_76994d912e87 to %APPDATA%\comain_ev2c34\ap.asin
Network activity
Connects to
  • '11#.#07.46.47':8853
  • '11#.#07.46.47':8852
TCP
Other
  • '11#.#07.46.47':8853
  • '11#.#07.46.47':8852
Miscellaneous
Searches for the following windows
  • ClassName: 'LogView_qqpcmgr' WindowName: ''
Creates and executes the following
  • '%APPDATA%\comain_ev2f79\ev2f79.exe'
  • '%APPDATA%\comain_ev2c34\ev2c34.exe'
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /C tasklist | findstr /I /C:"360tray.exe" /C:"HipsTray.exe"
  • '%WINDIR%\syswow64\tasklist.exe'
  • '%WINDIR%\syswow64\findstr.exe' /I /C:"360tray.exe" /C:"HipsTray.exe"
  • '%WINDIR%\syswow64\cmd.exe' /C start "" /B cmd.exe /C "powershell Add-MpPreference -ExclusionPath C:\,D:\,<Drive name for removable media>:\"
  • '%WINDIR%\syswow64\cmd.exe' /C "powershell Add-MpPreference -ExclusionPath C:\,D:\,<Drive name for removable media>:\"
  • '<SYSTEM32>\vssvc.exe'
  • '<SYSTEM32>\useraccountbroker.exe'
  • '<SYSTEM32>\edpnotify.exe'
  • '%WINDIR%\syswow64\cmd.exe' /C tasklist | findstr /I /C:"360tray.exe" /C:"HipsTray.exe"' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /C start "" /B cmd.exe /C "powershell Add-MpPreference -ExclusionPath C:\,D:\,<Drive name for removable media>:\"' (with hidden window)

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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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