Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\software\Wow6432Node\microsoft\windows\currentversion\run] 'Bron-Spizaetus' = '"%WINDIR%\ShellNew\sempalong.exe"'
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%WINDIR%\eksplorasi.exe"'
- [<HKCU>\software\microsoft\windows\currentversion\run] 'Tok-Cirrhatus' = '"%LOCALAPPDATA%\smss.exe"'
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\empty.pif
- %WINDIR%\tasks\at1.job
- <SYSTEM32>\tasks\at1
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
- file extensions
blocks execution of the following system utilities:
- Registry Editor (RegEdit)
modifies the following system settings:
- [<HKCU>\software\microsoft\windows\currentversion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Executes the following
- '%WINDIR%\syswow64\at.exe' /delete /y
- '%WINDIR%\syswow64\at.exe' 17:08 /every:M,T,W,Th,F,S,Su "%APPDATA%\Microsoft\Windows\Templates\Brengkolang.com"
Modifies file system
Creates the following files
- %WINDIR%\shellnew\sempalong.exe
- %WINDIR%\eksplorasi.exe
- %LOCALAPPDATA%\smss.exe
- %LOCALAPPDATA%\services.exe
- %LOCALAPPDATA%\lsass.exe
- %LOCALAPPDATA%\inetinfo.exe
- %LOCALAPPDATA%\csrss.exe
- %LOCALAPPDATA%\winlogon.exe
- %APPDATA%\microsoft\windows\templates\brengkolang.com
- %WINDIR%\syswow64\user's setting.scr
- %LOCALAPPDATA%\update.11.bron.tok.bin
- <DRIVERS>\etc\hosts-denied by-user.com
- %LOCALAPPDATA%\listhost11.txt
Sets the 'hidden' attribute to the following files
- %WINDIR%\shellnew\sempalong.exe
- %WINDIR%\eksplorasi.exe
Deletes the following files
- %WINDIR%\tasks\at1.job
- <SYSTEM32>\tasks\at1
- <DRIVERS>\etc\hosts-denied by-user.com
Network activity
TCP
HTTP GET requests
- http://www.ge###ties.com/sbllro2/IN11ORURQGRO.txt
- http://www.ge###ties.com/sbllro2/Host11.txt
UDP
- DNS ASK google.com
- DNS ASK ge###ties.com
Miscellaneous
Searches for the following windows
- ClassName: 'Progman' WindowName: ''
Creates and executes the following
- '%LOCALAPPDATA%\smss.exe'
- '%LOCALAPPDATA%\winlogon.exe'
- '%LOCALAPPDATA%\services.exe'
- '%LOCALAPPDATA%\lsass.exe'
- '%LOCALAPPDATA%\inetinfo.exe'
- '%LOCALAPPDATA%\smss.exe' ' (with hidden window)
- '%LOCALAPPDATA%\winlogon.exe' ' (with hidden window)
- '%WINDIR%\syswow64\at.exe' /delete /y' (with hidden window)
- '%WINDIR%\syswow64\at.exe' 17:08 /every:M,T,W,Th,F,S,Su "%APPDATA%\Microsoft\Windows\Templates\Brengkolang.com"' (with hidden window)
- '%LOCALAPPDATA%\services.exe' ' (with hidden window)
- '%LOCALAPPDATA%\lsass.exe' ' (with hidden window)
- '%LOCALAPPDATA%\inetinfo.exe' ' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\explorer.exe'
