Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Zewsd' = '%APPDATA%\OPERAS~1\OPERAS~1\SYNCEX~1\KNOHFE~1\8DLWYG~1\spreview.exe'
Creates or modifies the following files
- <SYSTEM32>\tasks\ebbrpjztbqhjgls
- %APPDATA%\Microsoft\windows\Start Menu\programs\startup\gwqapwvhowbuy.lnk
Malicious functions
Executes the following
- '<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Core Networking - Multicast Listener Done (ICMPv4-In)" program="%WINDIR%\Explorer.EXE" dir=in action=allow protocol=TCP localport=any
Injects code into
the following system processes:
- %WINDIR%\explorer.exe
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\systempropertiesadvanced.exe
- <SYSTEM32>\spreview.exe
- <SYSTEM32>\wfs.exe
the following user processes:
- firefox.exe
- iexplore.exe
Modifies file system
Creates the following files
- %LOCALAPPDATA%\zhazqjg\sysdm.cpl
- %LOCALAPPDATA%\zhazqjg\systempropertiesadvanced.exe
- %APPDATA%\icqm\icq\smiles\smiles\cat\caeak4v\sysdm.cpl
- %APPDATA%\icqm\icq\smiles\smiles\cat\caeak4v\systempropertiesadvanced.exe
- %LOCALAPPDATA%\8b2vflg\version.dll
- %LOCALAPPDATA%\8b2vflg\spreview.exe
- %APPDATA%\opera software\opera stable\sync extension settings\knohfebhibeknbfioecpdmdkjkjdnjnl\8dlwygiusbb\version.dll
- %APPDATA%\opera software\opera stable\sync extension settings\knohfebhibeknbfioecpdmdkjkjdnjnl\8dlwygiusbb\spreview.exe
- %LOCALAPPDATA%\7bxuvs1\mfc42u.dll
- %LOCALAPPDATA%\7bxuvs1\wfs.exe
- %APPDATA%\microsoft\windows\start menu\programs\mail.ru\oyv52o\mfc42u.dll
- %APPDATA%\microsoft\windows\start menu\programs\mail.ru\oyv52o\wfs.exe
Deletes the following files
- %LOCALAPPDATA%\zhazqjg\sysdm.cpl
- %LOCALAPPDATA%\zhazqjg\systempropertiesadvanced.exe
- %LOCALAPPDATA%\8b2vflg\spreview.exe
- %LOCALAPPDATA%\8b2vflg\version.dll
- %LOCALAPPDATA%\7bxuvs1\mfc42u.dll
- %LOCALAPPDATA%\7bxuvs1\wfs.exe
Substitutes the following files
- %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-1960123792-2022915161-3775307078-1001\f58155b4b1d5a524ca0261c3ee99fb50_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
Miscellaneous
Creates and executes the following
- '%LOCALAPPDATA%\zhazqjg\systempropertiesadvanced.exe'
- '%LOCALAPPDATA%\8b2vflg\spreview.exe'
- '%LOCALAPPDATA%\7bxuvs1\wfs.exe'
- '<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Core Networking - Multicast Listener Done (ICMPv4-In)" program="%WINDIR%\Explorer.EXE" dir=in action=allow protocol=TCP localport=any' (with hidden window)
