Analysis
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max time kernel
148s -
max time network
125s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
16-12-2021 17:50
Static task
static1
Behavioral task
behavioral1
Sample
a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.bin.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.bin.dll
Resource
win10-en-20211208
General
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Target
a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.bin.dll
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Size
190KB
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MD5
b1df6d854a85cc516b17c297e52961c7
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SHA1
b63cca38c6d715f7614f4bce1dcca60585e90731
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SHA256
a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793
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SHA512
472f4370e311b56db229f212f122dd925294462f5d265eed4f711fcc2e2058ca47caa031010732c3156326ee29b2d0e41d7154b389d8b345ce0f0b05db6fc05e
Malware Config
Extracted
C:\readme.txt
conti
http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/
https://contirecovery.click
Signatures
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Conti Ransomware
Ransomware generally thought to be a successor to Ryuk.
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Modifies extensions of user files 8 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
regsvr32.exedescription ioc process File renamed C:\Users\Admin\Pictures\UnlockStep.crw => C:\Users\Admin\Pictures\UnlockStep.crw.GPCEL regsvr32.exe File renamed C:\Users\Admin\Pictures\CloseOpen.png => C:\Users\Admin\Pictures\CloseOpen.png.GPCEL regsvr32.exe File renamed C:\Users\Admin\Pictures\EditDismount.png => C:\Users\Admin\Pictures\EditDismount.png.GPCEL regsvr32.exe File renamed C:\Users\Admin\Pictures\RepairResolve.raw => C:\Users\Admin\Pictures\RepairResolve.raw.GPCEL regsvr32.exe File renamed C:\Users\Admin\Pictures\RestartGrant.crw => C:\Users\Admin\Pictures\RestartGrant.crw.GPCEL regsvr32.exe File renamed C:\Users\Admin\Pictures\SelectCompare.tif => C:\Users\Admin\Pictures\SelectCompare.tif.GPCEL regsvr32.exe File opened for modification C:\Users\Admin\Pictures\SuspendSend.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\SuspendSend.tiff => C:\Users\Admin\Pictures\SuspendSend.tiff.GPCEL regsvr32.exe -
Drops startup file 1 IoCs
Processes:
regsvr32.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\readme.txt regsvr32.exe -
Drops desktop.ini file(s) 32 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Program Files\desktop.ini regsvr32.exe File opened for modification C:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Videos\desktop.ini regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\Microsoft Shared\Stationery\Desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI regsvr32.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\AccountPictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Links\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Searches\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Libraries\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Videos\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\Stationery\Desktop.ini regsvr32.exe -
Drops file in Program Files directory 64 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Program Files\Microsoft Office\root\vfs\Common AppData\Microsoft Help\MS.WINWORD.16.1033.hxn regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\org-openide-text.jar regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\js\plugin.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Retail-pl.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\ClientSub_M365_eula.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-100.png regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\com.jrockit.mc.feature.core_5.5.0.165303\feature.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\svgCheckboxUnselected.svg regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\tr-tr\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Retail-ul-phn.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\lib\management-agent.jar regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-white_scale-140.png regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.equinox.p2.rcp.feature_1.2.0.v20140523-0116\license.html regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.feature_3.9.1.v20140827-1444\META-INF\eclipse.inf regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\js\nls\zh-cn\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_PrepidBypass-ppd.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\db\bin\ij regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\SONORA\SONORA.INF regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\images\themes\dark\icons.png regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00E2-0000-1000-0000000FF1CE.xml regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.apache.commons.logging_1.1.1.v201101211721.jar regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\uk-ua\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_gridview-hover.svg regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\plugin.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\fr-fr\readme.txt regsvr32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu\oskmenubase.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\css\main-selector.css regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer-select\images\themes\dark\readme.txt regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\fr\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\js\nls\ro-ro\ui-strings.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\js\nls\sv-se\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_MAK-ul-phn.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdXC2RVL_KMS_ClientC2R-ppd.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Trial-ppd.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTrial-pl.xrm-ms regsvr32.exe File created C:\Program Files\Microsoft Office\root\Office16\XLSTART\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-api-progress_ja.jar regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\BREEZE\BREEZE.ELM regsvr32.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\gifs\index.gif regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app-api\dev\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\Download_on_the_App_Store_Badge_fi_135x40.svg regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\FileSystemMetadata.xml regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\be\LC_MESSAGES\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\modules\locale\org-netbeans-lib-profiler_zh_CN.jar regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\dev\nls\ro-ro\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\js\nls\en-ae\readme.txt regsvr32.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\js\nls\da-dk\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_MAK_AE-ppd.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\lib\deploy\messages_ko.properties regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\js\common.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\activity-badge\js\nls\fr-ma\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\fi-fi\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\Resources\1033\msmdsrv.rll regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\ko-kr\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\fi.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_SubTest-ppd.xrm-ms regsvr32.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\readme.txt regsvr32.exe File created C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\LanguageNames2\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\config\Modules\org-openide-options.xml_hidden regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\HintBarEllipses.16.GrayF.png regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\LISTS\1033\TIME.XML regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\readme.txt regsvr32.exe -
Drops file in Windows directory 3 IoCs
Processes:
svchost.exeShellExperienceHost.exedescription ioc process File opened for modification C:\Windows\Debug\ESE.TXT svchost.exe File created C:\Windows\rescache\_merged\4183903823\97717462.pri ShellExperienceHost.exe File created C:\Windows\rescache\_merged\4032412167\2701812693.pri ShellExperienceHost.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exepid process 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe 2792 regsvr32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
ShellExperienceHost.exepid process 508 ShellExperienceHost.exe 508 ShellExperienceHost.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
regsvr32.exedescription pid process target process PID 3484 wrote to memory of 2792 3484 regsvr32.exe regsvr32.exe PID 3484 wrote to memory of 2792 3484 regsvr32.exe regsvr32.exe PID 3484 wrote to memory of 2792 3484 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.bin.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3484 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.bin.dll2⤵
- Modifies extensions of user files
- Drops startup file
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:2792
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C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe"C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
PID:508
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc1⤵
- Drops file in Windows directory
PID:3192