Technical Information
Malicious functions:
Creates and executes the following:
- '%TEMP%\is-E4CU6.tmp\nisrrv.exe' (downloaded from the Internet)
Executes the following:
- '%TEMP%\is-E4CU6.tmp\nisrrv.exe' /S
- '%TEMP%\is-AF3L5.tmp\<File name>.tmp' /SL5="$30092,138953,56832,<Full path to file>"
Modifies file system:
Creates the following files:
- %TEMP%\is-E4CU6.tmp\nisrrv.exe.config
- %TEMP%\is-E4CU6.tmp\nisrrv.exe
- %TEMP%\is-E4CU6.tmp\itdownload.dll
- %TEMP%\is-AF3L5.tmp\<File name>.tmp
- %TEMP%\is-E4CU6.tmp\_isetup\_shfoldr.dll
Deletes the following files:
- %TEMP%\is-E4CU6.tmp\_isetup\_shfoldr.dll
- %TEMP%\is-AF3L5.tmp\<File name>.tmp
- %TEMP%\is-E4CU6.tmp\nisrrv.exe.config
- %TEMP%\is-E4CU6.tmp\itdownload.dll
- %TEMP%\is-E4CU6.tmp\nisrrv.exe
Network activity:
Connects to:
- 'to####ownload.pw':80
TCP:
HTTP GET requests:
- http://to####ownload.pw/bx/bx/nisrrv.exe
UDP:
- DNS ASK to####ownload.pw
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
