Analysis
-
max time kernel
142s -
max time network
144s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
17-12-2021 10:32
Static task
static1
Behavioral task
behavioral1
Sample
3125aa67fc6e09a00aad39e0eb8024b849d54de353b1a45b5297d4c5d5e87941.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
3125aa67fc6e09a00aad39e0eb8024b849d54de353b1a45b5297d4c5d5e87941.dll
Resource
win10-en-20211208
General
-
Target
3125aa67fc6e09a00aad39e0eb8024b849d54de353b1a45b5297d4c5d5e87941.dll
-
Size
190KB
-
MD5
ae32496289a4b4e4f670127849517ccf
-
SHA1
b96d0b726e1a2ff46847db035599291b8423aff4
-
SHA256
3125aa67fc6e09a00aad39e0eb8024b849d54de353b1a45b5297d4c5d5e87941
-
SHA512
37a0c038dbe85d51b885a1ece0bfd096d162ecd93ea1489c2efd5c23d0de2abedb754ce62b9e09ad3f24306ec34dbe5deab026000d727187c6ce94bc2617dffb
Malware Config
Extracted
C:\readme.txt
conti
http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/
https://contirecovery.ws
Signatures
-
Conti Ransomware
Ransomware generally thought to be a successor to Ryuk.
-
Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
regsvr32.exedescription ioc process File renamed C:\Users\Admin\Pictures\ExportComplete.raw => C:\Users\Admin\Pictures\ExportComplete.raw.YMFOS regsvr32.exe File renamed C:\Users\Admin\Pictures\MountComplete.tif => C:\Users\Admin\Pictures\MountComplete.tif.YMFOS regsvr32.exe File renamed C:\Users\Admin\Pictures\UnblockConvert.crw => C:\Users\Admin\Pictures\UnblockConvert.crw.YMFOS regsvr32.exe File renamed C:\Users\Admin\Pictures\UseRedo.crw => C:\Users\Admin\Pictures\UseRedo.crw.YMFOS 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:\Users\Admin\Videos\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Libraries\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\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\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini regsvr32.exe File opened for modification C:\Program Files\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\AccountPictures\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:\Program Files\Microsoft Office\root\Office16\1033\DataServices\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:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\Stationery\Desktop.ini regsvr32.exe File opened for modification C:\Users\Public\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\Pictures\Saved Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Videos\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Music\desktop.ini regsvr32.exe -
Drops file in Program Files directory 64 IoCs
Processes:
regsvr32.exedescription ioc process File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\files\dev\nls\sk-sk\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Retail-ppd.xrm-ms regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\hy\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.rcp_4.3.100.v20141007-2301.jar regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\bn\LC_MESSAGES\vlc.mo 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\js\app\dev\nls\sv-se\ui-strings.js regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-recent-files\js\nls\eu-es\ui-strings.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\js\nls\ru-ru\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifestLoc.16.en-us.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\Microsoft Shared\Stationery\Garden.jpg regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.scale-180.png regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.workbench.nl_zh_4.4.0.v20140623020002.jar 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\feature.xml regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\config\ModuleAutoDeps\org-netbeans-modules-options-api.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\activity-badge\js\nls\zh-cn\ui-strings.js regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-recent-files\js\nls\en-il\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_Subscription-pl.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProXC2RVL_MAKC2R-ul-phn.xrm-ms regsvr32.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\Web Server Extensions\16\BIN\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.jface.databinding_1.6.200.v20140528-1422.jar regsvr32.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\RICEPAPR\readme.txt regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\js\jquery.jstree.js regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\org-netbeans-modules-sampler.jar regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\home\js\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\js\nls\ko-kr\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\fi-fi\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-recent-files\js\nls\en-il\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_Subscription-ppd.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\wordvisi.ttf regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\hu-hu\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\home-view\selector.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\dev\nls\tr-tr\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\files\dev\nls\it-it\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\fr-ma\ui-strings.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\search-summary\js\nls\de-de\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\ko-kr\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_MAKC2R-pl.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\update_tracking\org-netbeans-modules-profiler-api.xml regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\intf\modules\host.luac regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\modules\com-sun-tools-visualvm-sa.jar regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\lib\locale\org-openide-modules_ja.jar regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\DataModel\Cartridges\sql70.xsl regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\S_IlluCCFilesEmpty_180x180.svg regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\selector.js regsvr32.exe File opened for modification C:\Program Files\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.p2.ui.sdk.scheduler.nl_ja_4.4.0.v20140623020002.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\js\nls\de-de\ui-strings.js regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_folder-default_32.svg regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\new_icons.png regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\activity-badge\js\nls\hr-hr\ui-strings.js regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\add-account\js\nls\sk-sk\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\org-openide-dialogs.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\progress_spinner.gif regsvr32.exe File opened for modification C:\Program Files\Google\Chrome\Application\89.0.4389.114\Locales\sk.pak regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\config\ModuleAutoDeps\org-netbeans-core.xml regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\fr-ma\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp6-pl.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-white_scale-100.png regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\lib\fonts\LucidaBrightRegular.ttf regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\pages-app\readme.txt regsvr32.exe File created C:\Program Files\Common Files\microsoft shared\ink\uk-UA\readme.txt regsvr32.exe File created C:\Program Files (x86)\Common Files\System\ado\en-US\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.alert_5.5.0.165303.jar regsvr32.exe -
Drops file in Windows directory 3 IoCs
Processes:
ShellExperienceHost.exesvchost.exedescription ioc process File created C:\Windows\rescache\_merged\4183903823\97717462.pri ShellExperienceHost.exe File created C:\Windows\rescache\_merged\4032412167\2701812693.pri ShellExperienceHost.exe File opened for modification C:\Windows\Debug\ESE.TXT svchost.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exepid process 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe 3992 regsvr32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
ShellExperienceHost.exepid process 884 ShellExperienceHost.exe 884 ShellExperienceHost.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
regsvr32.exedescription pid process target process PID 912 wrote to memory of 3992 912 regsvr32.exe regsvr32.exe PID 912 wrote to memory of 3992 912 regsvr32.exe regsvr32.exe PID 912 wrote to memory of 3992 912 regsvr32.exe regsvr32.exe
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\3125aa67fc6e09a00aad39e0eb8024b849d54de353b1a45b5297d4c5d5e87941.dll1⤵
- Suspicious use of WriteProcessMemory
PID:912 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\3125aa67fc6e09a00aad39e0eb8024b849d54de353b1a45b5297d4c5d5e87941.dll2⤵
- Modifies extensions of user files
- Drops startup file
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:3992
-
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:884
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc1⤵
- Drops file in Windows directory
PID:1124