Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'Steam' = '"%ProgramFiles(x86)%\SubDir\Runtime Broker.exe"'
Creates or modifies the following files
- <SYSTEM32>\tasks\steam
- <SYSTEM32>\tasks\windowssystemhost
Modifies file system
Creates the following files
- %ProgramFiles(x86)%\subdir\runtime broker.exe
- %LOCALAPPDATA%\microsoft\clr_v4.0\usagelogs\<File name>.exe.log
- %APPDATA%\logs\09-22-2026
Sets the 'hidden' attribute to the following files
- %ProgramFiles(x86)%\subdir\runtime broker.exe
Network activity
Connects to
- 'ip##pi.com':80
- 'localhost':35700
TCP
HTTP GET requests
- http://ip##pi.com/json/
UDP
- DNS ASK ip##pi.com
- DNS ASK lu#######-35700.portmap.host
Miscellaneous
Creates and executes the following
- '%ProgramFiles(x86)%\subdir\runtime broker.exe'
Executes the following
- '<SYSTEM32>\schtasks.exe' /create /tn "Steam" /sc ONLOGON /tr "<Full path to file>" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "Steam" /sc ONLOGON /tr "%ProgramFiles(x86)%\SubDir\Runtime Broker.exe" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "WINDOWSSYSTEMHOST" /tr "%ProgramFiles(x86)%\SubDir\Runtime Broker.exe" /sc MINUTE /MO 1
- '<SYSTEM32>\schtasks.exe' /create /tn "WINDOWSSYSTEMHOST" /tr "%ProgramFiles(x86)%\SubDir\Runtime Broker.exe" /sc MINUTE /MO 1' (with hidden window)
