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Win32.HLLW.Autoruner2.63470
Added to the Dr.Web virus database:
2019-10-01
Virus description added:
2019-10-03
Technical Information
To ensure autorun and distribution
Modifies the following registry keys
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Update' = '%APPDATA%\WindowsUpdate.exe'
Creates or modifies the following files
%APPDATA%\microsoft\windows\start menu\programs\startup\ntprint.lnk
Creates the following files on removable media
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\sys.exe
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
Injects code into
the following system processes:
%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe
Searches for registry branches where third party applications store passwords
[<HKCU>\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
[<HKCU>\Identities\{91255D00-95D9-49F5-8E84-7C027F5283B7}\Software\Microsoft\Internet Account Manager\Accounts]
[<HKCU>\Identities\{91255D00-95D9-49F5-8E84-7C027F5283B7}\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
[<HKCU>\Software\Microsoft\MSNMessenger]
[<HKCU>\Software\Yahoo\Pager]
[<HKCU>\Software\Microsoft\IdentityCRL]
[<HKCU>\Software\Microsoft\Windows Live Mail]
Modifies file system
Creates the following files
C:\smrxxwnxj\ntprint\wmpdmc.scr
%APPDATA%\pid.txt
%APPDATA%\pidloc.txt
%APPDATA%\windowsupdate.exe
%PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
%PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
%PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
<LS_APPDATA>\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
Sets the 'hidden' attribute to the following files
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\sys.exe
Network activity
UDP
DNS ASK wh#####yipaddress.com
Miscellaneous
Executes the following
'%WINDIR%\microsoft.net\framework\v2.0.50727\regasm.exe'
'%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /stext "%TEMP%\holdermail.txt"
'%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /stext "%TEMP%\holderwb.txt"
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