Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'smss' = '"C:\MSOCache\All Users\{90140000-0019-0409-1000-0000000FF1CE}-C\smss.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'smss' = '"C:\MSOCache\All Users\{90140000-0019-0409-1000-0000000FF1CE}-C\smss.exe"'
- [HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, "C:\MSOCache\All Users\{90140000-0019-0409-1000-0000000FF1CE}-C\smss.exe"'
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'audiodg' = '"<Current directory>\audiodg.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'audiodg' = '"<Current directory>\audiodg.exe"'
- [HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, "C:\MSOCache\All Users\{90140000-0019-0409-1000-0000000FF1CE}-C\smss.exe", "<Current directory>\audiodg.exe...
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'WUDFHost' = '"C:\kms\WUDFHost.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'WUDFHost' = '"C:\kms\WUDFHost.exe"'
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'System' = '"C:\Users\Default\Favorites\System.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'System' = '"C:\Users\Default\Favorites\System.exe"'
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'services' = '"C:\Users\Default User\services.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'services' = '"C:\Users\Default User\services.exe"'
Creates or modifies the following files
- <SYSTEM32>\tasks\smss
- <SYSTEM32>\tasks\smsss
- <SYSTEM32>\tasks\audiodga
- <SYSTEM32>\tasks\audiodg
- <SYSTEM32>\tasks\wudfhostw
- <SYSTEM32>\tasks\servicess
- <SYSTEM32>\tasks\systems
- <SYSTEM32>\tasks\services
- <SYSTEM32>\tasks\wudfhost
- <SYSTEM32>\tasks\system
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion:
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0019-0409-1000-0000000FF1CE}-C\smss.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath '<Current directory>\audiodg.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:\kms\WUDFHost.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:\Users\Default\Favorites\System.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:\Users\Default User\services.exe'
Modifies file system
Creates the following files
- C:\msocache\all users\{90140000-0019-0409-1000-0000000ff1ce}-c\smss.exe
- %HOMEPATH%\desktop\jdtzinpo.log
- %HOMEPATH%\desktop\bpmpunel.log
- %HOMEPATH%\desktop\ztqtrpeo.log
- %HOMEPATH%\desktop\ydgynaus.log
- %HOMEPATH%\desktop\ehisumuc.log
- %HOMEPATH%\desktop\ofdoaieo.log
- %HOMEPATH%\desktop\cbocnhyk.log
- %HOMEPATH%\desktop\qhpwwrij.log
- %HOMEPATH%\desktop\otczdjht.log
- %HOMEPATH%\desktop\hehhmytc.log
- %HOMEPATH%\desktop\ykowypty.log
- %HOMEPATH%\desktop\olkllydv.log
- %HOMEPATH%\desktop\bclayoiq.log
- %HOMEPATH%\desktop\todqkoxn.log
- %HOMEPATH%\desktop\yrfjqaxx.log
- %HOMEPATH%\desktop\ipzfxxhj.log
- %HOMEPATH%\desktop\lnpaifup.log
- %HOMEPATH%\desktop\sckrzqjg.log
- %HOMEPATH%\desktop\tcxjvefs.log
- C:\users\default user\services.exe
- C:\msocache\all users\{90140000-0019-0409-1000-0000000ff1ce}-c\69ddcba757bf72
- <Current directory>\audiodg.exe
- <Current directory>\42af1c969fbb7b
- C:\kms\wudfhost.exe
- C:\kms\480b7989c529f6
- C:\users\default\favorites\system.exe
- C:\users\default\favorites\27d1bcfc3c54e0
- C:\users\default user\c5b4cb5e9653cc
- %HOMEPATH%\desktop\ntkppjph.log
- %TEMP%\id1csmib.0.cs
- %TEMP%\id1csmib.cmdline
- %TEMP%\id1csmib.out
- %TEMP%\ntw9l86h9f
- %TEMP%\gnp84e3klk.bat
- nul
- %HOMEPATH%\desktop\awgcgpwx.log
- %HOMEPATH%\desktop\dkqzfhkz.log
- %HOMEPATH%\desktop\xllujwcf.log
Deletes the following files
- %TEMP%\id1csmib.out
- %TEMP%\id1csmib.cmdline
- %TEMP%\id1csmib.0.cs
- %TEMP%\ntw9l86h9f
Moves the following files
- from %ProgramFiles%\microsoft office\office14\bcssync.exe to %ProgramFiles%\microsoft office\office14\bcssync.exe.exe
Network activity
Connects to
- '53#####m.nyashmyash.top':80
TCP
HTTP POST requests
- http://53#####m.nyashmyash.top/Universallocal.php
UDP
- DNS ASK 53#####m.nyashmyash.top
Miscellaneous
Creates and executes the following
- '<Current directory>\audiodg.exe'
- '<SYSTEM32>\cmd.exe' /C "%TEMP%\GnP84E3klK.bat"' (with hidden window)
- '%WINDIR%\microsoft.net\framework64\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\id1csmib.cmdline"' (with hidden window)
Executes the following
- '<SYSTEM32>\schtasks.exe' /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-1000-0000000FF1CE}-C\smss.exe'" /f
- '<SYSTEM32>\cmd.exe' /C "%TEMP%\GnP84E3klK.bat"
- '<SYSTEM32>\schtasks.exe' /create /tn "servicess" /sc MINUTE /mo 5 /tr "'C:\Users\Default User\services.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "services" /sc ONLOGON /tr "'C:\Users\Default User\services.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Users\Default User\services.exe'" /f
- '<SYSTEM32>\schtasks.exe' /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Users\Default\Favorites\System.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "System" /sc ONLOGON /tr "'C:\Users\Default\Favorites\System.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "SystemS" /sc MINUTE /mo 6 /tr "'C:\Users\Default\Favorites\System.exe'" /f
- '<SYSTEM32>\chcp.com' 65001
- '<SYSTEM32>\schtasks.exe' /create /tn "WUDFHostW" /sc MINUTE /mo 7 /tr "'C:\kms\WUDFHost.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "WUDFHostW" /sc MINUTE /mo 13 /tr "'C:\kms\WUDFHost.exe'" /f
- '<SYSTEM32>\schtasks.exe' /create /tn "audiodga" /sc MINUTE /mo 5 /tr "'<Current directory>\audiodg.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "audiodg" /sc ONLOGON /tr "'<Current directory>\audiodg.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "audiodga" /sc MINUTE /mo 11 /tr "'<Current directory>\audiodg.exe'" /f
- '%WINDIR%\microsoft.net\framework64\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\id1csmib.cmdline"
- '<SYSTEM32>\schtasks.exe' /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-1000-0000000FF1CE}-C\smss.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "smss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-1000-0000000FF1CE}-C\smss.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "WUDFHost" /sc ONLOGON /tr "'C:\kms\WUDFHost.exe'" /rl HIGHEST /f
- '<SYSTEM32>\ping.exe' -n 10 localhost
