Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Kwisif' = '%APPDATA%\Thunderbird\Profiles\wjj9aet2.default\ectmhGS\MpSigStub.exe'
Creates or modifies the following files
- <SYSTEM32>\tasks\wkiccwa
- %APPDATA%\Microsoft\windows\Start Menu\programs\startup\ezjpezt.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>\eudcedit.exe
- <SYSTEM32>\mpsigstub.exe
- <SYSTEM32>\psr.exe
the following user processes:
- firefox.exe
- iexplore.exe
Modifies file system
Creates the following files
- %LOCALAPPDATA%\alt4giu\mfc42u.dll
- %LOCALAPPDATA%\alt4giu\eudcedit.exe
- %APPDATA%\icqm\icq\html\pt\error\royqjs\mfc42u.dll
- %APPDATA%\icqm\icq\html\pt\error\royqjs\eudcedit.exe
- %LOCALAPPDATA%\v9wyef\version.dll
- %LOCALAPPDATA%\v9wyef\mpsigstub.exe
- %APPDATA%\thunderbird\profiles\wjj9aet2.default\ectmhgs\version.dll
- %APPDATA%\thunderbird\profiles\wjj9aet2.default\ectmhgs\mpsigstub.exe
- %LOCALAPPDATA%\hybkk7vcc\version.dll
- %LOCALAPPDATA%\hybkk7vcc\psr.exe
- %APPDATA%\macromedia\flash player\#sharedobjects\gr8by44n\yastatic.net\hzh\version.dll
- %APPDATA%\macromedia\flash player\#sharedobjects\gr8by44n\yastatic.net\hzh\psr.exe
Deletes the following files
- %LOCALAPPDATA%\alt4giu\eudcedit.exe
- %LOCALAPPDATA%\alt4giu\mfc42u.dll
- %LOCALAPPDATA%\v9wyef\mpsigstub.exe
- %LOCALAPPDATA%\v9wyef\version.dll
- %LOCALAPPDATA%\hybkk7vcc\psr.exe
- %LOCALAPPDATA%\hybkk7vcc\version.dll
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%\alt4giu\eudcedit.exe'
- '%LOCALAPPDATA%\v9wyef\mpsigstub.exe'
- '%LOCALAPPDATA%\hybkk7vcc\psr.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)
