Analysis
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max time kernel
1635s -
max time network
1803s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
07-05-2022 05:55
Static task
static1
Behavioral task
behavioral1
Sample
update.exe
Resource
win7-20220414-en
windows7_x64
0 signatures
0 seconds
General
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Target
update.exe
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Size
5.5MB
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MD5
0c102c54f0ad17c2cdd9c89c5c3f3cf7
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SHA1
844fab5d39fc17eef2f7a1dc3be91ead3150c857
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SHA256
eece013ca6b8ce18ad9dfafa95689aa683586aa812d911457e97b0cff6db5113
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SHA512
62a9d1338bce7a83e4e4258920b7a35d3263e7a2e356824d12c0b3b9ebd124d7e0a58bc7fb516a3733c668d7d25b39c2814ed7e0c810b4fac30ac08e53f5a675
Malware Config
Signatures
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Zebrocy Go Variant 2 IoCs
resource yara_rule behavioral2/memory/408-130-0x0000000000400000-0x0000000000FEF000-memory.dmp Zebrocy behavioral2/memory/408-132-0x0000000000400000-0x0000000000FEF000-memory.dmp Zebrocy -
Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\RenameEnable.tiff update.exe File renamed C:\Users\Admin\Pictures\PushExport.raw => C:\Users\Admin\Pictures\PushExport.rawxAufd update.exe File renamed C:\Users\Admin\Pictures\RenameEnable.tiff => C:\Users\Admin\Pictures\RenameEnable.tiffcWyTC update.exe File renamed C:\Users\Admin\Pictures\TraceUnblock.raw => C:\Users\Admin\Pictures\TraceUnblock.rawtyZNh update.exe -
resource yara_rule behavioral2/memory/408-130-0x0000000000400000-0x0000000000FEF000-memory.dmp vmprotect behavioral2/memory/408-132-0x0000000000400000-0x0000000000FEF000-memory.dmp vmprotect -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI update.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_move_18.svg update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\ar-ae\ui-strings.js update.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] update.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsCamera_2018.826.98.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraMedTile.contrast-black_scale-125.png update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNoteSectionMedTile.scale-125.png update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_MAK-pl.xrm-ms update.exe File opened for modification C:\Program Files\Microsoft Office\root\Templates\1033\EssentialLetter.dotx update.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsCamera_2018.826.98.0_neutral_split.scale-200_8wekyb3d8bbwe\AppxBlockMap.xml update.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_ca.xml update.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\schema\com.jrockit.mc.rjmx.attributeTransformation.exsd update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Retail-ul-phn.xrm-ms update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_PrepidBypass-ul-oob.xrm-ms update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_filterselected-dark-down_32.svg update.exe File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Notifications\SoftLandingAssetLight.gif update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Trial-ul-oob.xrm-ms update.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\StopwatchWideTile.contrast-white_scale-125.png update.exe File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Locales\es-419.pak update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\add-account\images\themes\dark\illustrations.png update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdVL_MAK-pl.xrm-ms update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\StopwatchLargeTile.contrast-white_scale-200.png update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\S_IlluError_136x136.svg update.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-openide-dialogs_zh_CN.jar update.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\lib\deploy\messages_pt_BR.properties update.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\EmptyCalendarSearch.scale-400.png update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioStdO365R_SubTrial-ul-oob.xrm-ms update.exe File opened for modification C:\Program Files\Microsoft Office\root\rsod\word.x-none.msi.16.x-none.tree.dat update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe\Assets\contrast-black\PeopleAppList.targetsize-96_altform-unplated.png update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\fonts\NotebookIconAnimation.ttf update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\images\themeless\appstore.png update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\en-ae\ui-strings.js update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Grace-ul-oob.xrm-ms update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_Retail-ul-oob.xrm-ms update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Assets\Images\thumb_stats_render_sm.png update.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.app_1.3.200.v20130910-1609.jar update.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxAccountsSplashLogo.scale-180.png update.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\LinkedInboxWideTile.scale-400.png update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.contrast-black_targetsize-80.png update.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\EmptyCalendarSearch.scale-200.png update.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Generic-Dark.scale-200.png update.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\html\cpyr.htm update.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\VVIEWER.DLL update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.UI.Xaml.2.0_2.1810.18004.0_x64__8wekyb3d8bbwe\microsoft.system.package.metadata\Autogen\JSByteCodeCache_64 update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_filter-default_32.svg update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_remove_18.svg update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\dev\nls\uk-ua\ui-strings.js update.exe 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_icons.png update.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\VBA\VBA7.1\1033\VBE7INTL.DLL update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-24_altform-unplated_contrast-white.png update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\Fonts\FHubMDL2.ttf update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\AppxSignature.p7x update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\nls\ja-jp\ui-strings.js update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-80_contrast-high.png update.exe File opened for modification C:\Program Files\Google\Chrome\Application\89.0.4389.114\Locales\am.pak update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\contrast-white\PeopleSplashScreen.scale-125.png update.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarMediumTile.scale-200.png update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-256_altform-unplated.png update.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\LinkedInboxWideTile.scale-150.png update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\js\plugin.js update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\js\plugins\selection-action-plugins\epdf\plugin.js update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Assets\AppTiles\LiveTile\W6.png update.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_neutral_~_kzf8qxf38zg5c\AppxMetadata\AppxBundleManifest.xml update.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\files\dev\nls\ui-strings.js update.exe File opened for modification C:\Program Files\Google\Chrome\Application\89.0.4389.114\icudtl.dat update.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_Trial-ul-oob.xrm-ms update.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 408 update.exe 408 update.exe 408 update.exe 408 update.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 2008 vssvc.exe Token: SeRestorePrivilege 2008 vssvc.exe Token: SeAuditPrivilege 2008 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\update.exe"C:\Users\Admin\AppData\Local\Temp\update.exe"1⤵
- Modifies extensions of user files
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:408
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2008
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -p -s camsvc1⤵PID:1232