Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'UDP Subsystem' = '%ProgramFiles(x86)%\UDP Subsystem\udpss.exe'
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\hjdytuap.exe
Malicious functions
Creates and executes the following
- '' (downloaded from the Internet)
Creates and executes the following (exploit)
- '%APPDATA%\vbc.exe'
Injects code into
the following system processes:
- %WINDIR%\microsoft.net\framework\v4.0.30319\regasm.exe
Modifies file system
Creates the following files
- %APPDATA%\vbc.exe
- %APPDATA%\36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee\run.dat
- %ProgramFiles(x86)%\udp subsystem\udpss.exe
Network activity
Connects to
- 'mo####.hopto.org':1122
- '18#.#40.53.208':1122
TCP
HTTP GET requests
- http://5.###.203.118/nass.exe
UDP
- DNS ASK mo####.hopto.org
Miscellaneous
Executes the following
- '%CommonProgramFiles%\microsoft shared\equation\eqnedt32.exe' -Embedding
- '%WINDIR%\microsoft.net\framework\v4.0.30319\regasm.exe'
