Trojan.Siggen30.27207

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'winlogon' = '"<Current directory>\winlogon.exe"'
[HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'winlogon' = '"<Current directory>\winlogon.exe"'
[HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, "<Current directory>\winlogon.exe"'
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'lsm' = '"%ProgramFiles(x86)%\Windows Mail\en-US\lsm.exe"'
[HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'lsm' = '"%ProgramFiles(x86)%\Windows Mail\en-US\lsm.exe"'
[HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, "<Current directory>\winlogon.exe", "%ProgramFiles(x86)%\Windows Mail\en-US\lsm.exe"'
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'wininit' = '"C:\Users\Default\Videos\wininit.exe"'
[HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'wininit' = '"C:\Users\Default\Videos\wininit.exe"'
[HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, "<Current directory>\winlogon.exe", "%ProgramFiles(x86)%\Windows Mail\en-US\lsm.exe", "C:\Users\Default\Vid...
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'lsass' = '"<Current directory>\lsass.exe"'
[HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'lsass' = '"<Current directory>\lsass.exe"'
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'lsm' = '"%ProgramFiles(x86)%\Windows Portable Devices\lsm.exe"'
[HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'lsm' = '"%ProgramFiles(x86)%\Windows Portable Devices\lsm.exe"'
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run] '<File name>' = '"<Full path to file>"'
[HKLM\Software\Microsoft\Windows\CurrentVersion\Run] '<File name>' = '"<Full path to file>"'

Creates or modifies the following files

<SYSTEM32>\tasks\winlogonw
<SYSTEM32>\tasks\winlogon
<SYSTEM32>\tasks\lsml
<SYSTEM32>\tasks\wininitw
<SYSTEM32>\tasks\wininit
<SYSTEM32>\tasks\lsm
<SYSTEM32>\tasks\lsass
<SYSTEM32>\tasks\lsassl
<SYSTEM32>\tasks\<File name>j
<SYSTEM32>\tasks\<File name>

Modifies file system

Creates the following files

<Current directory>\e003a034089fed
%HOMEPATH%\desktop\lqnepjwk.log
%HOMEPATH%\desktop\jnvecqwo.log
nul
%TEMP%\0xzjmlj2rt.bat
%TEMP%\f3v4d94spe
%TEMP%\nmdblcbc.out
%TEMP%\nmdblcbc.cmdline
%TEMP%\nmdblcbc.0.cs
%HOMEPATH%\desktop\telzwnbv.log
<Current directory>\cc11b995f2a76d
%ProgramFiles(x86)%\windows mail\en-us\101b941d020240
%ProgramFiles(x86)%\windows mail\en-us\lsm.exe
C:\users\default\videos\56085415360792
C:\users\default\videos\wininit.exe
<Current directory>\6203df4a6bafc7
<Current directory>\lsass.exe
%ProgramFiles(x86)%\windows portable devices\101b941d020240
%ProgramFiles(x86)%\windows portable devices\lsm.exe
<Current directory>\winlogon.exe
%HOMEPATH%\desktop\kacjmumn.log

Deletes the following files

%TEMP%\nmdblcbc.0.cs
%TEMP%\nmdblcbc.cmdline
%TEMP%\nmdblcbc.out
%TEMP%\f3v4d94spe

Moves the following files

from %ProgramFiles%\microsoft office\office14\bcssync.exe to %ProgramFiles%\microsoft office\office14\bcssync.exe.exe

Network activity

Connects to

'58#####m.nyashteam.ru':80

TCP

HTTP POST requests

http://58#####m.nyashteam.ru/linepipepacketgeoDefaultTempcdnUploads.php

UDP

DNS ASK 58#####m.nyashteam.ru

Miscellaneous

Creates and executes the following

'%ProgramFiles(x86)%\windows portable devices\lsm.exe'

Executes the following

'<SYSTEM32>\schtasks.exe' /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'<Current directory>\winlogon.exe'" /f
'<SYSTEM32>\cmd.exe' /C "%TEMP%\0xZJMlJ2RT.bat"
'<SYSTEM32>\schtasks.exe' /create /tn "<File name>j" /sc MINUTE /mo 9 /tr "'<Full path to file>'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "<File name>" /sc ONLOGON /tr "'<Full path to file>'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "<File name>j" /sc MINUTE /mo 14 /tr "'<Full path to file>'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "lsml" /sc MINUTE /mo 12 /tr "'%ProgramFiles(x86)%\Windows Portable Devices\lsm.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "lsm" /sc ONLOGON /tr "'%ProgramFiles(x86)%\Windows Portable Devices\lsm.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "lsml" /sc MINUTE /mo 12 /tr "'%ProgramFiles(x86)%\Windows Portable Devices\lsm.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'<Current directory>\lsass.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "lsass" /sc ONLOGON /tr "'<Current directory>\lsass.exe'" /rl HIGHEST /f
'<SYSTEM32>\chcp.com' 65001
'<SYSTEM32>\schtasks.exe' /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'<Current directory>\lsass.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "wininit" /sc ONLOGON /tr "'C:\Users\Default\Videos\wininit.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Users\Default\Videos\wininit.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "lsml" /sc MINUTE /mo 14 /tr "'%ProgramFiles(x86)%\Windows Mail\en-US\lsm.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "lsm" /sc ONLOGON /tr "'%ProgramFiles(x86)%\Windows Mail\en-US\lsm.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "lsml" /sc MINUTE /mo 6 /tr "'%ProgramFiles(x86)%\Windows Mail\en-US\lsm.exe'" /f
'%WINDIR%\microsoft.net\framework64\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\nmdblcbc.cmdline"
'<SYSTEM32>\schtasks.exe' /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'<Current directory>\winlogon.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "winlogon" /sc ONLOGON /tr "'<Current directory>\winlogon.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Videos\wininit.exe'" /rl HIGHEST /f
'<SYSTEM32>\ping.exe' -n 10 localhost
'%WINDIR%\microsoft.net\framework64\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\nmdblcbc.cmdline"' (with hidden window)
'<SYSTEM32>\cmd.exe' /C "%TEMP%\0xZJMlJ2RT.bat"' (with hidden window)