Analysis Overview
SHA256
ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f
Threat Level: Known bad
The file ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f was found to be: Known bad.
Malicious Activity Summary
Process spawned unexpected child process
Avoslocker family
Avoslocker Ransomware
Modifies boot configuration data using bcdedit
Renames multiple (8494) files with added filename extension
Deletes shadow copies
Enumerates connected drives
Drops desktop.ini file(s)
Sets desktop wallpaper using registry
Drops file in Program Files directory
Unsigned PE
System Location Discovery: System Language Discovery
Command and Scripting Interpreter: PowerShell
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Interacts with shadow copies
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Opens file in notepad (likely ransom note)
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-15 00:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-12-15 00:07
Reported
2024-12-15 00:09
Platform
win10v2004-20241007-en
Max time kernel
107s
Max time network
112s
Command Line
Signatures
Avoslocker Ransomware
Avoslocker family
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process | N/A | C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE |
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 |
Renames multiple (8494) files with added filename extension
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\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\Z: | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\873556499.png" | C:\Windows\system32\reg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Microsoft Office\root\vfs\Common AppData\Microsoft\OFFICE\Heartbeat\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN097.XML | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0409-1000-0000000FF1CE.xml | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Locales\zh-TW.pak | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Generic-Light.scale-250.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\lua\http\requests\browse.xml | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\locale\zh_CN\LC_MESSAGES\vlc.mo | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\WATER\PREVIEW.GIF | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\VisioProXC2RVL_KMS_ClientC2R-ul-oob.xrm-ms | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Edge.dat | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\themes\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\fr-fr\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\DSCResources\PackageManagementDscUtilities.psm1 | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\locale\sm\LC_MESSAGES\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_MAK-ul-phn.xrm-ms | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\Common Files\System\Ole DB\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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\css\tool-selector.css | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\add-account\js\nls\hu-hu\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Outlook.scale-250.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\LinkedInboxBadge.scale-200.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailLargeTile.scale-200.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Windows Photo Viewer\uk-UA\PhotoViewer.dll.mui | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_MAK-ul-oob.xrm-ms | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\lib\ext\sunjce_provider.jar | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\fr-FR\wmpnssui.dll.mui | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\CONCRETE\CONCRETE.INF | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\MSIPC\sr-Cyrl-RS\msipc.dll.mui | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\MSIPC\hr\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\AddressBook2x.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Office16\1033\GRAPH.HXS | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\legal\jdk\jpeg.md | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\jre\lib\resources.jar | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\microsoft shared\ink\ipschs.xml | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\LinkedInboxLargeTile.scale-125.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\HWRCustomization\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\ko-kr\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\nls\ca-es\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\editpdf.svg | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailBadge.scale-125.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailSmallTile.scale-400.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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\et_get.svg | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\es-es\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\createpdfupsell-app\css\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\css\files\dev\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\WATER\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019DemoR_BypassTrial180-ppd.xrm-ms | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\createpdfupsell-app\js\nls\da-dk\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\js\nls\sl-si\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\back-arrow-default.svg | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\ExchangeLargeTile.scale-150.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\locale\lg\LC_MESSAGES\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\locale\brx\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\FPA_f4\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\lib\deploy\messages_zh_CN.properties | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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\close.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\css\app\dev\cef\GET_YOUR_FILES_BACK.txt | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\DSCResources\MSFT_PackageManagement\it-IT\MSFT_PackageManagement.schema.mfl | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\Windows Photo Viewer\ja-JP\PhotoViewer.dll.mui | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\images\themes\dark\rhp_world_icon_2x.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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\de-de\ui-strings.js | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| File opened for modification | C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\OutlookMailWideTile.scale-100.png | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| 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 |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.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 |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe
"C:\Users\Admin\AppData\Local\Temp\ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f.exe"
C:\Windows\SYSTEM32\cmd.exe
cmd /c wmic shadowcopy delete /nointeractive
C:\Windows\SYSTEM32\cmd.exe
cmd /c vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\SYSTEM32\cmd.exe
cmd /c bcdedit /set {default} recoveryenabled No
C:\Windows\SYSTEM32\cmd.exe
cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\SYSTEM32\cmd.exe
cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete /nointeractive
C:\Windows\system32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled No
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command "$a = [System.IO.File]::ReadAllText(\"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\873556499.png /f
C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" user32.dll UpdatePerUserSystemParameters 0 False
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x118,0x11c,0x120,0xf4,0x124,0x7ffa979ecc40,0x7ffa979ecc4c,0x7ffa979ecc58
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Desktop\CheckpointStep.docx" /o ""
C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe
OfficeC2RClient.exe /error PID=28576 ProcessName="Microsoft Word" UIType=3 ErrorSource=0x8b10082a ErrorCode=0x80004005 ShowUI=1
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Documents\GET_YOUR_FILES_BACK.txt
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.77.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.24.18.2.in-addr.arpa | udp |
Files
C:\GET_YOUR_FILES_BACK.txt
| MD5 | c92c2b70fb37f84aab38412ad9226aa8 |
| SHA1 | 14f2e9a83285612d0a7b2c83b8f89bccfde6c154 |
| SHA256 | d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f |
| SHA512 | 04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848 |
memory/35492-15752-0x00007FFA96DC3000-0x00007FFA96DC5000-memory.dmp
memory/35492-15753-0x00007FFA96DC0000-0x00007FFA97881000-memory.dmp
memory/35492-15818-0x00007FFA96DC0000-0x00007FFA97881000-memory.dmp
memory/35492-15846-0x0000026D2ED50000-0x0000026D2ED72000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mel3tkee.cxx.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/35492-22694-0x00007FFA96DC0000-0x00007FFA97881000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 0ff7e1af4cc86e108eef582452b35523 |
| SHA1 | c2ccf2811d56c3a3a58dced2b07f95076c6b5b96 |
| SHA256 | 62ed8ef2250f9f744852cb67df0286c80f94e26aed646989b76e5b78f2f1f0d0 |
| SHA512 | 374675fd36cd8bc38acaec44d4cc855b85feece548d99616496d498e61e943fd695fec7c57550a58a32455e8b21b41bafa18cd1dadac69676fff1de1a56da937 |
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\Google\Chrome\User Data\Crashpad\settings.dat
| MD5 | 1fd21a5228803360e7498b21377bd349 |
| SHA1 | c028d9a423b995bb2f9d9b56ef09e5a4f9535b38 |
| SHA256 | 920270c469d0fdd572881597d30bae6f24faec32c8a1e7e689186947ac7958d3 |
| SHA512 | c2324e1b0a32c3d4abdac5ee1c2e663d1e49c24c17f0b5a5dac56cc867f67d2665f29148de2773f2e048292b189d136876b557ae9837517f612155633cbb09b2 |