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Win32.HLLW.Autoruner2.56743

Added to the Dr.Web virus database: 2019-08-11

Virus description added: 2019-08-12

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'ltyup' = '%HOMEPATH%\ltyup.exe /P'

Creates the following files on removable media

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\rcx11.tmp
<Drive name for removable media>:\dial.exe
<Drive name for removable media>:\rcx10.tmp
<Drive name for removable media>:\dashborder_96.exe
<Drive name for removable media>:\rcxf.tmp
<Drive name for removable media>:\dashborder_192.exe
<Drive name for removable media>:\rcxe.tmp
<Drive name for removable media>:\dashborder_144.exe
<Drive name for removable media>:\rcxd.tmp
<Drive name for removable media>:\coffee.exe
<Drive name for removable media>:\rcxc.tmp
<Drive name for removable media>:\dashborder_120.exe
<Drive name for removable media>:\rcxb.tmp
<Drive name for removable media>:\dialmap.exe
<Drive name for removable media>:\hanni_umami_chapter.exe
<Drive name for removable media>:\rcxa.tmp
<Drive name for removable media>:\correct.exe
<Drive name for removable media>:\rcx8.tmp
<Drive name for removable media>:\rcx7.tmp
<Drive name for removable media>:\000814251_video_01.exe
<Drive name for removable media>:\rcx6.tmp
<Drive name for removable media>:\rcx5.tmp
<Drive name for removable media>:\split.exe
<Drive name for removable media>:\rcx4.tmp
<Drive name for removable media>:\rcx3.tmp
<Drive name for removable media>:\join.exe
<Drive name for removable media>:\rcx2.tmp
<Drive name for removable media>:\rcx1.tmp
<Drive name for removable media>:\archer.exe
<Drive name for removable media>:\ltyup.exe
<Drive name for removable media>:\rcx9.tmp
<Drive name for removable media>:\rcx12.tmp

Malicious functions

To complicate detection of its presence in the operating system,

forces the system hide from view:

hidden files

Modifies file system

Creates the following files

%HOMEPATH%\ltyup.exe

Sets the 'hidden' attribute to the following files

%HOMEPATH%\ltyup.exe
<Drive name for removable media>:\autorun.inf

Deletes the following files

<Drive name for removable media>:\archer.exe
<Drive name for removable media>:\join.exe
<Drive name for removable media>:\split.exe
<Drive name for removable media>:\000814251_video_01.exe
<Drive name for removable media>:\correct.exe
<Drive name for removable media>:\dialmap.exe
<Drive name for removable media>:\dashborder_120.exe
<Drive name for removable media>:\coffee.exe
<Drive name for removable media>:\dashborder_144.exe
<Drive name for removable media>:\dashborder_192.exe
<Drive name for removable media>:\dashborder_96.exe
<Drive name for removable media>:\dial.exe
<Drive name for removable media>:\hanni_umami_chapter.exe

Substitutes the following files

<Drive name for removable media>:\archer.exe
<Drive name for removable media>:\join.exe
<Drive name for removable media>:\split.exe
<Drive name for removable media>:\000814251_video_01.exe
<Drive name for removable media>:\correct.exe
<Drive name for removable media>:\dialmap.exe
<Drive name for removable media>:\dashborder_120.exe
<Drive name for removable media>:\coffee.exe
<Drive name for removable media>:\dashborder_144.exe
<Drive name for removable media>:\dashborder_192.exe
<Drive name for removable media>:\dashborder_96.exe
<Drive name for removable media>:\dial.exe
<Drive name for removable media>:\hanni_umami_chapter.exe

Network activity

Connects to

'ns#.##ayer1352.com':8003

UDP

DNS ASK ns#.##ayer1352.com

Miscellaneous

Creates and executes the following

'%HOMEPATH%\ltyup.exe'