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 AdjustPrivilegeToken
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Opens file in notepad (likely ransom note)
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-05-11 15:49
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-05-11 15:49
Reported
2023-05-11 15:51
Platform
win7-20230220-en
Max time kernel
73s
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\GrantWait.png => C:\Users\Admin\Pictures\GrantWait.png.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ImportComplete.raw => C:\Users\Admin\Pictures\ImportComplete.raw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\NewBackup.tiff => C:\Users\Admin\Pictures\NewBackup.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ResumeEdit.tiff => C:\Users\Admin\Pictures\ResumeEdit.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UnregisterGrant.raw => C:\Users\Admin\Pictures\UnregisterGrant.raw.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\NewBackup.tiff | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\ResumeEdit.tiff | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertToSet.raw => C:\Users\Admin\Pictures\ConvertToSet.raw.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-1-5-21-2647223082-2067913677-935928954-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1700332598.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)\Windows Sidebar\Gadgets\Weather.Gadget\images\21.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Clock.Gadget\ja-JP\clock.html | 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\FormsStyles\STS2\background.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\CommsOutgoingImageMask.bmp | 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\Waveform.xml | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0105496.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Europe\Kaliningrad | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Media Player\de-DE\mpvis.dll.mui | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA01293_.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\locale\gu\LC_MESSAGES\vlc.mo | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Games\Mahjong\fr-FR\Mahjong.exe.mui | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Microsoft Games\Hearts\ja-JP\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-netbeans-spi-quicksearch.jar | 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_cs.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\btn_search_over.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Calendar.Gadget\images\bNext.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\1033\GRAPH.HXS | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Games\Mahjong\de-DE\Mahjong.exe.mui | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\America\Grand_Turk | 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.core.ssl.feature_1.0.0.v20140827-1444\META-INF\MANIFEST.MF | 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\GrooveForms\FieldTypePreview\BUTTON.JPG | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0382955.JPG | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\OCEAN_01.MID | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\America\Antigua | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.flightrecorder.configuration_5.5.0.165303.jar | 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.rcp_4.4.0.v20141007-2301\feature.properties | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\ja-JP\css\flyout.css | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\FS3BOX.POC | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0301418.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO00555_.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows Defender\en-US\MsMpRes.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\profiler\modules\locale\org-netbeans-lib-profiler_zh_CN.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\platform\modules\locale\org-netbeans-modules-sendopts_zh_CN.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.emf.ecore.change_2.10.0.v20140901-1043.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\symbols\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\Groove\ToolData\groove.net\CommonData\CommsOutgoingImage.jpg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\Clock.Gadget\images\modern_dot.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0107712.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Common Files\microsoft shared\VSTA\Pipeline.v10.0\AddInViews\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.forms.nl_zh_4.4.0.v20140623020002.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\THEMES.INF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\SlideShow.Gadget\drag.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\ENV11.POC | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\ADDINS\OUTEX2.ECF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\WB02198_.GIF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\lua\http\dialogs\create_stream.html | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Pacific\Tarawa | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Etc\GMT-8 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Windows Sidebar\Gadgets\RSSFeeds.Gadget\ja-JP\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files (x86)\Windows Sidebar\Gadgets\Calendar.Gadget\ja-JP\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\1033\PUBFTSCM\SCHEME06.CSS | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\README.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\locale\sv\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\de-DE\settings.html | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Sidebar\Gadgets\Currency.Gadget\fr-FR\js\localizedStrings.js | 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\Swirl\background.gif | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BS01638_.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0198025.WMF | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\STORYVERTBB.POC | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\OneNote\SendToOneNote-PipelineConfig.xml | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\1033\EXCEL.HXS | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBFTSCM\SCHEME18.CSS | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\Clarity.xml | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BL00012_.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 |
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\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 bcdedit /set {default} bootstatuspolicy ignoreallfailures
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} recoveryenabled No
C:\Windows\system32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
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 $_.Log }"
C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete /nointeractive
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\GET_YOUR_FILES_BACK.txt
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command "$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\1700332598.png /f
C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
Network
Files
\Device\HarddiskVolume1\Boot\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
memory/2992-1007-0x000000001B280000-0x000000001B562000-memory.dmp
memory/2992-1080-0x0000000002310000-0x0000000002318000-memory.dmp
memory/2992-1297-0x0000000002350000-0x00000000023D0000-memory.dmp
memory/2992-1327-0x0000000002350000-0x00000000023D0000-memory.dmp
memory/2992-1334-0x0000000002350000-0x00000000023D0000-memory.dmp
memory/2992-1504-0x0000000002350000-0x00000000023D0000-memory.dmp
C:\Users\Admin\Desktop\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
\??\PIPE\srvsvc
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
| MD5 | 37db35bb35a49d029a8e75c8c65b44f8 |
| SHA1 | 0db3e4eebe23f270e865258ec50ec3f2c4fce270 |
| SHA256 | 25fb9885b75d90e62e19bf05c0cbb69b533820196aacc09efa0a773ac16ed59c |
| SHA512 | 313eb372d02f4921432a519bca11c622fb561cfd2972eb4738e300ef556f1d61e394f890c3b7880e597ae32749792cd44f0681e6e07b253166ccdf478e891129 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\EN5SGQ61K109RTDDN5BS.temp
| MD5 | 37db35bb35a49d029a8e75c8c65b44f8 |
| SHA1 | 0db3e4eebe23f270e865258ec50ec3f2c4fce270 |
| SHA256 | 25fb9885b75d90e62e19bf05c0cbb69b533820196aacc09efa0a773ac16ed59c |
| SHA512 | 313eb372d02f4921432a519bca11c622fb561cfd2972eb4738e300ef556f1d61e394f890c3b7880e597ae32749792cd44f0681e6e07b253166ccdf478e891129 |
memory/3060-24550-0x000000001B0D0000-0x000000001B3B2000-memory.dmp
memory/3060-24551-0x0000000002460000-0x0000000002468000-memory.dmp
C:\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
memory/3060-24553-0x0000000002870000-0x00000000028F0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-05-11 15:49
Reported
2023-05-11 15:52
Platform
win10v2004-20230220-en
Max time kernel
81s
Max time network
127s
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\DisableUpdate.tiff => C:\Users\Admin\Pictures\DisableUpdate.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DismountConvert.tif => C:\Users\Admin\Pictures\DismountConvert.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\GrantRestart.tiff | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\GrantRestart.tiff => C:\Users\Admin\Pictures\GrantRestart.tiff.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RegisterAssert.tif => C:\Users\Admin\Pictures\RegisterAssert.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\SetInitialize.tif => C:\Users\Admin\Pictures\SetInitialize.tif.avos2 | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\DisableUpdate.tiff | 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\Microsoft Office\root\Office16\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-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1347122807.png" | C:\Windows\system32\reg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\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\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\Workflow.VisualBasic.Targets | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-netbeans-modules-options-api.xml | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\db\lib\derbytools.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_Retail-ppd.xrm-ms | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.security.win32.x86_64_1.0.100.v20130327-1442.jar | 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\signatures\js\nls\da-dk\ui-strings.js | 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\on-boarding\images\themeless\pdf-ownership-variant2.gif | 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\ob-preview\js\nls\cs-cz\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\STRTEDGE\STRTEDGE.INF | 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\digsig\js\nls\sv-se\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\plug_ins\AcroForm\PMP\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxA-Yahoo-Light.scale-250.png | 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\js\plugins\tracked-send\js\nls\uk-ua\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\tracked-send\js\plugins\tracked-send\images\share_icons2x.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\tracked-send\js\plugins\tracked-send\images\themes\dark\nub.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\sample-files\js\nls\tr-tr\ui-strings.js | 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\my-recent-files\js\nls\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\schema\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Java\jdk1.8.0_66\jre\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\VisualElements\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\on-boarding\images\themeless\find-text.png | 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\files\dev\nls\de-de\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\plug_ins\Annotations\Stamps\ENU\SignHere.pdf | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-modules-keyring-fallback_ja.jar | 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\digsig\js\nls\ro-ro\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\icons\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.sat4j.core_2.3.5.v201308161310.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\locale\ia\LC_MESSAGES\vlc.mo | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTest-ppd.xrm-ms | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Java\jre1.8.0_66\lib\management\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\configuration\org.eclipse.equinox.simpleconfigurator\bundles.info | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailAppList.targetsize-24_altform-unplated.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\PlatformCapabilities\ExcelCapabilities.json | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.net_1.2.200.v20120807-0927.jar | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\System\ado\es-ES\msader15.dll.mui | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\MEDIA\PUSH.WAV | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files (x86)\WindowsPowerShell\Modules\Pester\3.4.0\en-US\about_Mocking.help.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\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\sample-files\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\images\themes\dark\s_auditreport_18.svg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\casual.dotx | 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\images\themes\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\createpdfupsell-app\js\nls\ja-jp\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\combinepdf\js\nls\cs-cz\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailMediumTile.scale-125.png | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\vreg\dcfmui.msi.16.en-us.vreg.dat | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\locale\as_IN\LC_MESSAGES\vlc.mo | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_COL.HXT | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\WordVL_MAK-ul-oob.xrm-ms | 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 created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\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)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\js\nls\sv-se\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\bg1a.jpg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\locale\brx\LC_MESSAGES\vlc.mo | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Proof.Culture.msi.16.fr-fr.xml | 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\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\fss\img\tools\@1x\[email protected] | 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\images\themes\dark\s_invite_18.svg | C:\Users\Admin\AppData\Local\Temp\5d6e4bd7bd7239fab20e043fb292974497297af89759b1b0d48d7d006e5e96fa.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarSplashLogo.scale-125.png | 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:\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 |
| 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 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\cmd.exe
cmd /c vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled No
C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete /nointeractive
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\system32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command "$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\1347122807.png /f
C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
Network
| Country | Destination | Domain | Proto |
| NL | 8.238.177.126:80 | tcp | |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 126.20.238.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 254.152.241.8.in-addr.arpa | udp |
| US | 20.189.173.5:443 | tcp | |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 233.141.123.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| NL | 8.238.177.126:80 | tcp | |
| US | 8.8.8.8:53 | 163.252.72.23.in-addr.arpa | udp |
| NL | 8.238.177.126:80 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 131.253.33.203:80 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_juma2lqh.xlc.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/1516-146-0x0000022191340000-0x0000022191362000-memory.dmp
C:\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
memory/1516-793-0x0000022191260000-0x0000022191270000-memory.dmp
memory/1516-832-0x0000022191260000-0x0000022191270000-memory.dmp
memory/1516-1540-0x0000022191260000-0x0000022191270000-memory.dmp
memory/1516-3346-0x00000221A94E0000-0x00000221A96FC000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | 6cf293cb4d80be23433eecf74ddb5503 |
| SHA1 | 24fe4752df102c2ef492954d6b046cb5512ad408 |
| SHA256 | b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8 |
| SHA512 | 0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 1a11402783a8686e08f8fa987dd07bca |
| SHA1 | 580df3865059f4e2d8be10644590317336d146ce |
| SHA256 | 9b1d1b468932a2d88548dc18504ac3066f8248079ecb083e919460bdb88398c0 |
| SHA512 | 5f7f9f76d9d12a25fdc5b8d193391fb42c37515c657250fe01a9bfd9fe4cc4eab9d5ec254b2596ac1b9005f12511905f19fdae41f057062261d75bd83254b510 |
C:\GET_YOUR_FILES_BACK.txt
| MD5 | 064348106157ac3e6972ebe6852f665f |
| SHA1 | 4f95549af4873637f05f5f574b93605d30a28dbb |
| SHA256 | 876a6444eeb977c6d73be9474d3cc85307a0f68d4b342c2e59913172f80caa2a |
| SHA512 | e121d453c52fa8aabc7a878649bc68dc25a2bd24861c3557c82d8182ea7ac2b9f9921b5caae950901d036dd77a437e65233cbe5add23dc8d2c7446431bb3ab33 |
memory/13656-24866-0x000001D6CE290000-0x000001D6CE2A0000-memory.dmp
memory/13656-24868-0x000001D6CE290000-0x000001D6CE2A0000-memory.dmp