Analysis
-
max time kernel
133s -
max time network
136s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
02-03-2022 13:37
Static task
static1
Behavioral task
behavioral1
Sample
1.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
1.dll
Resource
win10v2004-en-20220113
General
-
Target
1.dll
-
Size
901KB
-
MD5
8371d1c15af2ffa8111deef437997d79
-
SHA1
d4b427988b2876546c2e00329ac1b9ba3905c9b8
-
SHA256
37410f45bab40e0d5e8e2160b480d928c975fadbe423be884678b924d66871d2
-
SHA512
d09c4b72f2f9219d12cb2735a835382b1fb5c4e0f8487a5b025494a7576780c893e48f713b5986d93328fe92642ca47794d1fca95cf65c1cb1835daab17db23a
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.
-
Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
description pid Process procid_target PID 2072 created 1292 2072 WerFault.exe 65 -
Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ConvertFromClose.raw => C:\Users\Admin\Pictures\ConvertFromClose.raw.MUUAZ regsvr32.exe File opened for modification C:\Users\Admin\Pictures\StopRedo.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\StopRedo.tiff => C:\Users\Admin\Pictures\StopRedo.tiff.MUUAZ regsvr32.exe File renamed C:\Users\Admin\Pictures\UnprotectLock.raw => C:\Users\Admin\Pictures\UnprotectLock.raw.MUUAZ regsvr32.exe File renamed C:\Users\Admin\Pictures\UnregisterConvertTo.tif => C:\Users\Admin\Pictures\UnregisterConvertTo.tif.MUUAZ regsvr32.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\readme.txt regsvr32.exe -
Drops desktop.ini file(s) 30 IoCs
description ioc Process File opened for modification C:\Users\Public\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Program Files\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Videos\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Searches\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\AccountPictures\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\3D Objects\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Saved Games\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\Pictures\Saved Pictures\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\Links\desktop.ini regsvr32.exe 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:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Downloads\desktop.ini regsvr32.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\EdgeCore\97.0.1072.55\Locales\it.pak regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\Complex Machine.pdf regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\js\nls\eu-es\ui-strings.js regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\gl\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\lib\cmm\PYCC.pf regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\oc\LC_MESSAGES\vlc.mo regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\modules\locale\org-netbeans-lib-profiler-charts_zh_CN.jar regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Fonts\private\DUBAI-BOLD.TTF regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\fr-fr\ui-strings.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\nb-no\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription5-pl.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-100.png regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\RADIAL\THMBNAIL.PNG regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\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\images\themes\dark\s_empty_state.svg regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\nl-nl\readme.txt regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\js\nls\en-gb\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\ro-ro\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Grace-ul-oob.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp5-ul-phn.xrm-ms regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\msedge_100_percent.pak regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\modules\com-sun-tools-visualvm-host-views.jar regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\home-view\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-pl.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.console_1.1.0.v20140131-1639.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_sortedby_up_selected_18.svg regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\images\themeless\Appstore\Download_on_the_App_Store_Badge_en_135x40.svg regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\notice.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\large_trefoil_2x.png regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\css\dark\e4-dark_preferencestyle.css regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\ru-ru\ui-strings.js regsvr32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\tr-tr\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\viewer\nls\it-it\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\sk.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\db\lib\derbyrun.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Locales\qu.pak regsvr32.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\1033\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\images\themes\dark\illustrations.png regsvr32.exe File created C:\Program Files\Common Files\System\de-DE\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription4-ul-oob.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.ssl.feature_1.0.0.v20140827-1444\feature.properties regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_invite_18.svg regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\bin\server\Xusage.txt regsvr32.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\ODBC\readme.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-ul-oob.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-pl.xrm-ms regsvr32.exe File created C:\Program Files (x86)\Common Files\Adobe\Reader\readme.txt regsvr32.exe File opened for modification C:\Program Files\Google\Chrome\Application\89.0.4389.114\Locales\cs.pak regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\illustrations_retina.png regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\eu-es\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_SubTrial-pl.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.ssl.feature_1.0.0.v20140827-1444\about.html regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-netbeans-api-annotations-common.xml regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\lib\smtp.jar regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019DemoR_BypassTrial180-ul-oob.xrm-ms regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\WordNaiveBayesCommandRanker.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\System\Ole DB\en-US\sqlxmlx.rll.mui regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\digsig\js\nls\it-it\ui-strings.js regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\search-summary\js\nls\fr-ma\ui-strings.js regsvr32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_KMS_ClientC2R-ul.xrm-ms regsvr32.exe File created C:\Program Files\VideoLAN\VLC\lua\playlist\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.rjmx.zh_CN_5.5.0.165303.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.properties regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\cs\readme.txt regsvr32.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 2436 1292 WerFault.exe 65 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WerFault.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WerFault.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe 1292 regsvr32.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2072 wrote to memory of 1292 2072 WerFault.exe 65 PID 2072 wrote to memory of 1292 2072 WerFault.exe 65
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\1.dll1⤵
- Modifies extensions of user files
- Drops startup file
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:1292 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 1292 -s 9442⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
PID:2436
-
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 424 -p 1292 -ip 12921⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2072