Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\nvngxupdatecheckdaily_{aefe271c-271c-271c-271c-aefe271c271c}
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\explorer.exe
the following user processes:
- bdcgrst
Hooks functions
in browsers
- iexplore.exe process, wininet.dll module
- firefox.exe process, nss3.dll module
Searches for registry branches where third party applications store passwords
- [<HKCU>\Software\Martin Prikryl]
- [<HKLM>\Software\Wow6432Node\Martin Prikryl]
Reads files which store third party applications passwords
- %APPDATA%\mozilla\firefox\profiles.ini
- %LOCALAPPDATA%\google\chrome\user data\default\login data
- %LOCALAPPDATA%\google\chrome\user data\default\cookies
- %APPDATA%\opera software\opera stable\login data
- %APPDATA%\thunderbird\profiles.ini
Modifies file system
Creates the following files
- %TEMP%\5c1b.tmp
- %TEMP%\b058.tmp
- %TEMP%\b028.tmp
- %TEMP%\b027.tmp
- %TEMP%\b017.tmp
- %TEMP%\b006.tmp
- %TEMP%\aff5.tmp
- %TEMP%\afe5.tmp
- %TEMP%\afd4.tmp
- %TEMP%\af47.tmp
- %TEMP%\af36.tmp
- %TEMP%\af06.tmp
- %TEMP%\aef6.tmp
- %TEMP%\ac85.tmp
- %TEMP%\ac65.tmp-shm
- %TEMP%\ac65.tmp
- %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
- %APPDATA%\ejhauvv
- %APPDATA%\bdcgrst
- %TEMP%\b069.tmp
- %TEMP%\b069.tmp-shm
Sets the 'hidden' attribute to the following files
- %APPDATA%\bdcgrst
- %APPDATA%\ejhauvv
Deletes the following files
- %TEMP%\ac65.tmp-shm
- %TEMP%\b069.tmp-shm
- %TEMP%\b058.tmp
- %TEMP%\b028.tmp
- %TEMP%\b027.tmp
- %TEMP%\b017.tmp
- %TEMP%\b006.tmp
- %TEMP%\aff5.tmp
- %TEMP%\afe5.tmp
- %TEMP%\afd4.tmp
- %TEMP%\af47.tmp
- %TEMP%\af36.tmp
- %TEMP%\af06.tmp
- %TEMP%\aef6.tmp
- %TEMP%\ac85.tmp
- %TEMP%\ac65.tmp
- %TEMP%\b069.tmp
- %TEMP%\5c1b.tmp
Substitutes the following files
- %TEMP%\5c1b.tmp
Deletes itself.
Network activity
Connects to
- 'ol##us.casa':443
TCP
- 'ol##us.casa':443
UDP
- DNS ASK ol##us.casa
Miscellaneous
Creates and executes the following
- '%APPDATA%\bdcgrst'
- '%APPDATA%\bdcgrst' ' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\explorer.exe'
- '%WINDIR%\explorer.exe'
- '<SYSTEM32>\taskeng.exe' {3142BD4C-52FA-46F0-8375-15A3B836D54D} S-1-5-21-1960123792-2022915161-3775307078-1001:ghnvqqeyabb\user:Interactive:[1]
