Technical Information
To ensure autorun and distribution
Sets the following service settings
- [HKLM\System\CurrentControlSet\Services\xyewmipq] 'Start' = '00000002'
- [HKLM\System\CurrentControlSet\Services\xyewmipq] 'ImagePath' = '%WINDIR%\SysWOW64\xyewmipq\pbresrjn.exe /d"<Full path to file>"'
- [HKLM\SYSTEM\CurrentControlSet\services\xyewmipq] 'ImagePath' = '%WINDIR%\SysWOW64\xyewmipq\pbresrjn.exe'
Creates the following services
- 'xyewmipq' %WINDIR%\SysWOW64\xyewmipq\pbresrjn.exe /d"<Full path to file>"
- 'xyewmipq' %WINDIR%\SysWOW64\xyewmipq\pbresrjn.exe
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion with following registry keys:
- [HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\SysWOW64\xyewmipq' = '00000000'
Executes the following
- '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul
Injects code into
the following system processes:
- %WINDIR%\syswow64\svchost.exe
Modifies file system
Creates the following files
- %TEMP%\pbresrjn.exe
- %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
- from %TEMP%\pbresrjn.exe to %WINDIR%\syswow64\xyewmipq\pbresrjn.exe
Deletes itself.
Network activity
Connects to
- 'va##heim.cn':443
- 'i.###tagram.com':443
- 'in###gram.com':443
- 'oa###.vk.com':443
- 'ap#.###ampowered.com':443
- 'va####.bplaced.net':80
- 'st####ommunity.com':443
- '47.#3.26.4':993
- 'eb##.com':443
- 'google.com':80
- '17#.#13.115.136':421
- '17#.#13.115.135':421
- '19#.143.1.5':421
- '17#.#13.115.84':421
- '45.##3.201.238':421
- '17#.#11.174.109':421
- '62.##2.184.58':485
- '17#.#11.174.92':421
- 'lo###.live.com':443
TCP
HTTP GET requests
- http://www.google.com/
HTTP POST requests
- http://va####.bplaced.net/MySQLadmin/id.php.phar
Other
- 'va##heim.cn':443
- '62.##2.184.58':485
- '17#.#11.174.109':421
- '17#.#13.115.84':421
- '17#.#11.174.92':421
- '19#.143.1.5':421
- '17#.#13.115.135':421
- '17#.#13.115.136':421
- '45.##3.201.238':421
- '47.#3.26.4':993
- 'st####ommunity.com':443
- 'oa###.vk.com':443
- 'i.###tagram.com':443
- 'eb##.com':443
- 'lo###.live.com':443
UDP
- DNS ASK va##heim.cn
- DNS ASK google.com
- DNS ASK st####ommunity.com
- DNS ASK va####.bplaced.net
- DNS ASK ap#.###ampowered.com
- DNS ASK 13#.###.#00.176.in-addr.arpa
- DNS ASK oa###.vk.com
- DNS ASK in###gram.com
- DNS ASK i.###tagram.com
- DNS ASK eb##.com
- DNS ASK lo###.live.com
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\xyewmipq\pbresrjn.exe' /d"<Full path to file>"
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\xyewmipq\
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\pbresrjn.exe" %WINDIR%\SysWOW64\xyewmipq\
- '%WINDIR%\syswow64\sc.exe' create xyewmipq binPath= "%WINDIR%\SysWOW64\xyewmipq\pbresrjn.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
- '%WINDIR%\syswow64\sc.exe' description xyewmipq "wifi internet conection"
- '%WINDIR%\syswow64\sc.exe' start xyewmipq
- '%WINDIR%\syswow64\svchost.exe'
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\xyewmipq\' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\pbresrjn.exe" %WINDIR%\SysWOW64\xyewmipq\' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' create xyewmipq binPath= "%WINDIR%\SysWOW64\xyewmipq\pbresrjn.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' description xyewmipq "wifi internet conection"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' start xyewmipq' (with hidden window)
- '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul' (with hidden window)
