Analysis Overview
SHA256
794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81
Threat Level: Known bad
The file 794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe was found to be: Known bad.
Malicious Activity Summary
Avoslocker Ransomware
Modifies boot configuration data using bcdedit
Deletes shadow copies
Modifies extensions of user files
Enumerates connected drives
Drops desktop.ini file(s)
Sets desktop wallpaper using registry
Drops file in Program Files directory
Interacts with shadow copies
Uses Volume Shadow Copy service COM API
Opens file in notepad (likely ransom note)
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-04-18 05:23
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-04-18 05:23
Reported
2023-04-18 05:26
Platform
win7-20230220-en
Max time kernel
60s
Max time network
33s
Command Line
Signatures
Avoslocker Ransomware
Deletes shadow copies
Modifies boot configuration data using bcdedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\bcdedit.exe | N/A |
| N/A | N/A | C:\Windows\system32\bcdedit.exe | N/A |
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\Pictures\ResolveEnable.tiff | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ReadConvertFrom.tiff | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DebugLock.tif => C:\Users\Admin\Pictures\DebugLock.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RemoveEnable.tiff => C:\Users\Admin\Pictures\RemoveEnable.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RequestFind.png => C:\Users\Admin\Pictures\RequestFind.png.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ResetTrace.crw => C:\Users\Admin\Pictures\ResetTrace.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ReadConvertFrom.tiff => C:\Users\Admin\Pictures\ReadConvertFrom.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertToClose.png => C:\Users\Admin\Pictures\ConvertToClose.png.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\InvokeWrite.crw => C:\Users\Admin\Pictures\InvokeWrite.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\WaitInitialize.png => C:\Users\Admin\Pictures\WaitInitialize.png.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RemoveEnable.tiff | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\InstallRegister.tif => C:\Users\Admin\Pictures\InstallRegister.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RevokeCompress.crw => C:\Users\Admin\Pictures\RevokeCompress.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ResolveEnable.tiff => C:\Users\Admin\Pictures\ResolveEnable.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\LimitRename.tif => C:\Users\Admin\Pictures\LimitRename.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\GrantWait.crw => C:\Users\Admin\Pictures\GrantWait.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SearchConvert.crw => C:\Users\Admin\Pictures\SearchConvert.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\1033\DataServices\DESKTOP.INI | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\Z: | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1040352102.png" | C:\Windows\system32\reg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0185774.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Pacific\Niue | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\javafx-mx.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Africa\Johannesburg | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Mozilla Maintenance Service\logs\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD15058_.GIF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Internet Explorer\en-US\networkinspection.dll.mui | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\MSInfo\ja-JP\msinfo32.exe.mui | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\create_form.gif | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\Currency.Gadget\de-DE\gadget.xml | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.text.nl_ja_4.4.0.v20140623020002.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\Scene_loop_PAL.wmv | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0301050.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0309904.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\SpringGreen.css | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0105282.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0145879.JPG | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA00809_.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH03014_.GIF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\locale\fr\LC_MESSAGES\vlc.mo | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\logo.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms\FormsViewAttachmentIcons.jpg | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\images\winClassicTSFrame.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Google\Chrome\Application\106.0.5249.119\WidevineCdm\manifest.json | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\es-ES\js\RSSFeeds.js | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\Windows Sidebar\Gadgets\Clock.Gadget\en-US\css\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\Workflow.VisualBasic.Targets | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-spi-quicksearch_zh_CN.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\it-IT\css\settings.css | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18244_.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\schema\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\currency.data | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\Microsoft Shared\ink\ipsnld.xml | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\SoftBlue\tab_on.gif | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0101857.BMP | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD15173_.GIF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Internet Explorer\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Common Files\System\Ole DB\es-ES\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-openide-text.xml | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\VisualBasic\1033\LoginForm.zip | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms\AddToViewArrow.jpg | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGMN002.XML | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0199283.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\settings_left_rest.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\Currency.Gadget\images\combo-hover-middle.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.nl_ja_4.4.0.v20140623020002.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Araguaina | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\images\buttonUp_On.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Windows Sidebar\Gadgets\CPU.Gadget\images\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Office\Office14\Groove\Certificates\groove.net\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\PDIR27F.GIF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE05870_.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO00352_.WMF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\System\ado\msado26.tlb | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\IRIS\PREVIEW.GIF | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\12.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\SlideShow.Gadget\es-ES\slideShow.html | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-core_zh_CN.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\javax.inject_1.0.0.v20091030.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Chicago | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\Microsoft Shared\Stationery\White_Chocolate.jpg | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins3d\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\org-netbeans-core_visualvm.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms\FormsHomePageStyle.css | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
Interacts with shadow copies
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe
"C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe"
C:\Windows\system32\cmd.exe
cmd /c wmic shadowcopy delete /nointeractive
C:\Windows\system32\cmd.exe
cmd /c vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\system32\cmd.exe
cmd /c bcdedit /set {default} recoveryenabled No
C:\Windows\system32\cmd.exe
cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\system32\cmd.exe
cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\system32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete /nointeractive
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled No
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command "$a = [System.IO.File]::ReadAllText(\"C:\GET_YOUR_FILES_BACK.txt\");Add-Type -AssemblyName System.Drawing;$filename = \"$env:temp\$(Get-Random).png\";$bmp = new-object System.Drawing.Bitmap 1920,1080;$font = new-object System.Drawing.Font Consolas,10;$brushBg = [System.Drawing.Brushes]::Black;$brushFg = [System.Drawing.Brushes]::White;$format = [System.Drawing.StringFormat]::GenericDefault;$format.Alignment = [System.Drawing.StringAlignment]::Center;$format.LineAlignment = [System.Drawing.StringAlignment]::Center;$graphics = [System.Drawing.Graphics]::FromImage($bmp);$graphics.FillRectangle($brushBg,0,0,$bmp.Width,$bmp.Height);$graphics.DrawString($a,$font,$brushFg,[System.Drawing.RectangleF]::FromLTRB(0, 0, 1920, 1080),$format);$graphics.Dispose();$bmp.Save($filename);reg add \"HKEY_CURRENT_USER\Control Panel\Desktop\" /v Wallpaper /t REG_SZ /d $filename /f;Start-Sleep 1;rundll32.exe user32.dll, UpdatePerUserSystemParameters, 0, $false;"
C:\Windows\system32\reg.exe
"C:\Windows\system32\reg.exe" add "HKEY_CURRENT_USER\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\1040352102.png /f
C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
Network
Files
\Device\HarddiskVolume1\GET_YOUR_FILES_BACK.txt
| MD5 | 9bcb42cd18f95356b2d1a1a4de0b5aad |
| SHA1 | b03da5cab852e8fafc12a52e424ec4b10431270d |
| SHA256 | 6e66527651da97c609c697e763e165eaf0fa1da104c26d311ec48fec9950ae24 |
| SHA512 | 85961b90024f25a20943f9ce3b3c0959ced373d7b548cfc533bb51164aa615125528352438ab43e4b285ab570268bb4ed46f861db89d29d830230b9f63b0f496 |
memory/2564-1798-0x0000000002400000-0x0000000002480000-memory.dmp
memory/2564-1829-0x0000000002400000-0x0000000002480000-memory.dmp
memory/2564-1977-0x000000001B190000-0x000000001B472000-memory.dmp
memory/2564-1990-0x00000000022A0000-0x00000000022A8000-memory.dmp
memory/2564-2461-0x0000000002400000-0x0000000002480000-memory.dmp
memory/2564-2464-0x0000000002400000-0x0000000002480000-memory.dmp
\??\PIPE\srvsvc
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
| MD5 | 696f3c89816fa4e7f6b0d9b32f3fb40d |
| SHA1 | ac72491c5b793ca8cfd6c6b522303371613181cd |
| SHA256 | 272601253ff2746a6c6b7e47dac459ab133cab33acff8a9db063c3279bf28e4b |
| SHA512 | 4a662690fc7ebad5a3a321d913726edb5014d533ab36ae0bb295b9e3980eb985b82394afb40d486c87d373dc0da5999d914bce67a8fe473e4fce80e3379c6a74 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\K7CB0I1V55192Q6T34NP.temp
| MD5 | 696f3c89816fa4e7f6b0d9b32f3fb40d |
| SHA1 | ac72491c5b793ca8cfd6c6b522303371613181cd |
| SHA256 | 272601253ff2746a6c6b7e47dac459ab133cab33acff8a9db063c3279bf28e4b |
| SHA512 | 4a662690fc7ebad5a3a321d913726edb5014d533ab36ae0bb295b9e3980eb985b82394afb40d486c87d373dc0da5999d914bce67a8fe473e4fce80e3379c6a74 |
memory/2540-24605-0x000000001B270000-0x000000001B552000-memory.dmp
memory/2540-24604-0x00000000025C0000-0x0000000002640000-memory.dmp
memory/2540-24606-0x0000000002370000-0x0000000002378000-memory.dmp
C:\GET_YOUR_FILES_BACK.txt
| MD5 | 9bcb42cd18f95356b2d1a1a4de0b5aad |
| SHA1 | b03da5cab852e8fafc12a52e424ec4b10431270d |
| SHA256 | 6e66527651da97c609c697e763e165eaf0fa1da104c26d311ec48fec9950ae24 |
| SHA512 | 85961b90024f25a20943f9ce3b3c0959ced373d7b548cfc533bb51164aa615125528352438ab43e4b285ab570268bb4ed46f861db89d29d830230b9f63b0f496 |
memory/2540-24608-0x00000000025C0000-0x0000000002640000-memory.dmp
memory/2540-24609-0x00000000025C0000-0x0000000002640000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\1040352102.png
| MD5 | fb93594c806f5b3b4cc627d1cbcc9327 |
| SHA1 | d4c29ca6106bad5409748e7f949ccff1b7d150cc |
| SHA256 | fbc6e6163add1cc990cc92afea4883465ab09b9eef49390eab674aab6c296fbb |
| SHA512 | 73c0a84dad9854315d58fdc6a088c5fbf978dab3a2e193833afc72ddc83b1bf3d4a339310b51b96eb23934eb27e3379f3989f9502fcc882d2a298cf69282fc55 |
Analysis: behavioral2
Detonation Overview
Submitted
2023-04-18 05:23
Reported
2023-04-18 05:26
Platform
win10v2004-20230220-en
Max time kernel
112s
Max time network
117s
Command Line
Signatures
Avoslocker Ransomware
Deletes shadow copies
Modifies boot configuration data using bcdedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\bcdedit.exe | N/A |
| N/A | N/A | C:\Windows\system32\bcdedit.exe | N/A |
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\UnpublishUnregister.crw => C:\Users\Admin\Pictures\UnpublishUnregister.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\CloseUnregister.tiff | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ResizeDeny.tif => C:\Users\Admin\Pictures\ResizeDeny.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CloseUnregister.tiff => C:\Users\Admin\Pictures\CloseUnregister.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConfirmInvoke.tif => C:\Users\Admin\Pictures\ConfirmInvoke.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SetUse.raw => C:\Users\Admin\Pictures\SetUse.raw.avos2 | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\Z: | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2125497753.png" | C:\Windows\system32\reg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_sortedby_hover_18.svg | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\locale\af\LC_MESSAGES\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-modules-autoupdate-cli_zh_CN.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-core-output2_zh_CN.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\jre\lib\management\jmxremote.access | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\MSIPC\he\msipc.dll.mui | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Trial-pl.xrm-ms | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\javax.servlet.jsp_2.2.0.v201112011158.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\images\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\js\nls\nb-no\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins3d\prcr.x3d | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\Snooze.scale-80.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\plugins\plugins.dat | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\lua\intf\modules\host.luac | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\AccessR_OEM_Perp-ul-phn.xrm-ms | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\jre\lib\deploy\messages_zh_CN.properties | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Windows Photo Viewer\fr-FR\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\css\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\fr-fr\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\ExchangeLargeTile.scale-150.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\lua\modules\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-180.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.ds_1.4.200.v20131126-2331.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\Pester\3.4.0\Snippets\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\da-dk\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\images\themeless\Playstore\ms_get.svg | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\EmptySearch-Dark.scale-125.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\EmptyView.scale-150.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\img\tools\themes\dark\x_2x.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\config\Modules\org-netbeans-core-io-ui.xml_hidden | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\config\Modules\org-openide-execution.xml_hidden | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\js\nls\es-es\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\MarkAsReadToastQuickAction.scale-80.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\Send2Fluent.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\MSIPC\zh-CN\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\init.js | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\fr-FR\wmlaunch.exe.mui | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\Cartridges\sql120.xsl | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.flightrecorder.ui_5.5.0.165303.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.feature_3.9.0.v20140827-1444\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16EnterpriseVL_Bypass30-ppd.xrm-ms | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.core_5.5.0.165303.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\Internet Explorer\es-ES\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-recent-files\js\nls\sl-si\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\images\new_icons.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailLargeTile.scale-200.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\locale\gl\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Office.PowerPivot.ExcelAddIn.tlb | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\VSTO\10.0\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\Microsoft Office\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL108.XML | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Integration\C2RManifest.office32ww.msi.16.x-none.xml | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\modules\locale\org-netbeans-modules-profiler-oql_ja.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Tracker\server_lg.gif | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxMailSmallTile.scale-150.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\lua\playlist\jamendo.luac | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_Grace-ppd.xrm-ms | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.e4.ui.model.workbench_1.1.0.v20140512-1820.jar | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA\Pipeline.v10.0\PipelineSegments.store | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\Info.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\svgCheckboxUnselected.svg | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\EmptySearch-Dark.scale-100.png | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\VC\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\zh-tw\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
Interacts with shadow copies
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
Opens file in notepad (likely ransom note)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\NOTEPAD.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe
"C:\Users\Admin\AppData\Local\Temp\794f3d25c42d383fad485f9af1d6d7c0508bcfe8ed80a1afea0e0b51bf92bc81.exe"
C:\Windows\SYSTEM32\cmd.exe
cmd /c wmic shadowcopy delete /nointeractive
C:\Windows\SYSTEM32\cmd.exe
cmd /c vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\SYSTEM32\cmd.exe
cmd /c bcdedit /set {default} recoveryenabled No
C:\Windows\SYSTEM32\cmd.exe
cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\SYSTEM32\cmd.exe
cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete /nointeractive
C:\Windows\system32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled No
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command "$a = [System.IO.File]::ReadAllText(\"C:\GET_YOUR_FILES_BACK.txt\");Add-Type -AssemblyName System.Drawing;$filename = \"$env:temp\$(Get-Random).png\";$bmp = new-object System.Drawing.Bitmap 1920,1080;$font = new-object System.Drawing.Font Consolas,10;$brushBg = [System.Drawing.Brushes]::Black;$brushFg = [System.Drawing.Brushes]::White;$format = [System.Drawing.StringFormat]::GenericDefault;$format.Alignment = [System.Drawing.StringAlignment]::Center;$format.LineAlignment = [System.Drawing.StringAlignment]::Center;$graphics = [System.Drawing.Graphics]::FromImage($bmp);$graphics.FillRectangle($brushBg,0,0,$bmp.Width,$bmp.Height);$graphics.DrawString($a,$font,$brushFg,[System.Drawing.RectangleF]::FromLTRB(0, 0, 1920, 1080),$format);$graphics.Dispose();$bmp.Save($filename);reg add \"HKEY_CURRENT_USER\Control Panel\Desktop\" /v Wallpaper /t REG_SZ /d $filename /f;Start-Sleep 1;rundll32.exe user32.dll, UpdatePerUserSystemParameters, 0, $false;"
C:\Windows\system32\reg.exe
"C:\Windows\system32\reg.exe" add "HKEY_CURRENT_USER\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\2125497753.png /f
C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\GET_YOUR_FILES_BACK.txt
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 20.189.173.6:443 | tcp | |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | assets.msn.com | udp |
| NL | 23.73.0.161:443 | assets.msn.com | tcp |
| US | 8.8.8.8:53 | 161.0.73.23.in-addr.arpa | udp |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | 63.13.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 209.197.3.8:80 | tcp | |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 209.197.3.8:80 | tcp |
Files
C:\GET_YOUR_FILES_BACK.txt
| MD5 | 9bcb42cd18f95356b2d1a1a4de0b5aad |
| SHA1 | b03da5cab852e8fafc12a52e424ec4b10431270d |
| SHA256 | 6e66527651da97c609c697e763e165eaf0fa1da104c26d311ec48fec9950ae24 |
| SHA512 | 85961b90024f25a20943f9ce3b3c0959ced373d7b548cfc533bb51164aa615125528352438ab43e4b285ab570268bb4ed46f861db89d29d830230b9f63b0f496 |
memory/2232-606-0x000001E4FCAD0000-0x000001E4FCAE0000-memory.dmp
memory/2232-607-0x000001E4FCAD0000-0x000001E4FCAE0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ezxwde0o.emy.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/2232-644-0x000001E4FCBE0000-0x000001E4FCC02000-memory.dmp
memory/2232-731-0x000001E4FCAD0000-0x000001E4FCAE0000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | 6cf293cb4d80be23433eecf74ddb5503 |
| SHA1 | 24fe4752df102c2ef492954d6b046cb5512ad408 |
| SHA256 | b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8 |
| SHA512 | 0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00 |
memory/19172-24897-0x0000025F19640000-0x0000025F19650000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 7274a07d1b80de6f66290b47588cee3b |
| SHA1 | d926b384806c755fe6b9d03f68852765aabb5703 |
| SHA256 | 5eba7517357473e4d5d7ede75c3768069c578d2b0023473fd67f76b373430de8 |
| SHA512 | b7813fea9091298d48c87b259b0d4473ddc4480667f82ed6b5f8bdfa600590dcbfb1d62cbaca649dcf321d85cb786bf62d48826ab04297a22b7c88439b94bcf3 |
C:\GET_YOUR_FILES_BACK.txt
| MD5 | 9bcb42cd18f95356b2d1a1a4de0b5aad |
| SHA1 | b03da5cab852e8fafc12a52e424ec4b10431270d |
| SHA256 | 6e66527651da97c609c697e763e165eaf0fa1da104c26d311ec48fec9950ae24 |
| SHA512 | 85961b90024f25a20943f9ce3b3c0959ced373d7b548cfc533bb51164aa615125528352438ab43e4b285ab570268bb4ed46f861db89d29d830230b9f63b0f496 |
memory/19172-24901-0x0000025F19640000-0x0000025F19650000-memory.dmp
C:\Users\Admin\Desktop\GET_YOUR_FILES_BACK.txt
| MD5 | 9bcb42cd18f95356b2d1a1a4de0b5aad |
| SHA1 | b03da5cab852e8fafc12a52e424ec4b10431270d |
| SHA256 | 6e66527651da97c609c697e763e165eaf0fa1da104c26d311ec48fec9950ae24 |
| SHA512 | 85961b90024f25a20943f9ce3b3c0959ced373d7b548cfc533bb51164aa615125528352438ab43e4b285ab570268bb4ed46f861db89d29d830230b9f63b0f496 |