Analysis
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max time kernel
122s -
max time network
65s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
11-10-2021 19:44
Static task
static1
Behavioral task
behavioral1
Sample
8907548328b9bc8e04d0949e4a0e3bb9b749b45a32d9d95cbb9d6b27154d4310.dll
Resource
win7v20210408
Behavioral task
behavioral2
Sample
8907548328b9bc8e04d0949e4a0e3bb9b749b45a32d9d95cbb9d6b27154d4310.dll
Resource
win10v20210408
General
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Target
8907548328b9bc8e04d0949e4a0e3bb9b749b45a32d9d95cbb9d6b27154d4310.dll
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Size
197KB
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MD5
edf9d4b9b6a244e13df21ca99a265de1
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SHA1
ead78959e5f6466db23aa712535586ae216a107a
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SHA256
8907548328b9bc8e04d0949e4a0e3bb9b749b45a32d9d95cbb9d6b27154d4310
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SHA512
f16a7beaaab07971b7e3d40698188386c645601d8fcb289782633cf8e6b549a26528143b3a79b0defb9306e75a0faec67ca33775c679dda0190ed66ac22b138e
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 10 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\ExpandCopy.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\StopMeasure.tiff => C:\Users\Admin\Pictures\StopMeasure.tiff.IRZNT regsvr32.exe File renamed C:\Users\Admin\Pictures\UndoDebug.crw => C:\Users\Admin\Pictures\UndoDebug.crw.IRZNT regsvr32.exe File renamed C:\Users\Admin\Pictures\SelectUnblock.raw => C:\Users\Admin\Pictures\SelectUnblock.raw.IRZNT regsvr32.exe File opened for modification C:\Users\Admin\Pictures\StopMeasure.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\AssertSplit.raw => C:\Users\Admin\Pictures\AssertSplit.raw.IRZNT regsvr32.exe File renamed C:\Users\Admin\Pictures\ExpandCopy.tiff => C:\Users\Admin\Pictures\ExpandCopy.tiff.IRZNT regsvr32.exe File renamed C:\Users\Admin\Pictures\GetRestart.png => C:\Users\Admin\Pictures\GetRestart.png.IRZNT regsvr32.exe File renamed C:\Users\Admin\Pictures\HideWrite.crw => C:\Users\Admin\Pictures\HideWrite.crw.IRZNT regsvr32.exe File renamed C:\Users\Admin\Pictures\RestoreResize.png => C:\Users\Admin\Pictures\RestoreResize.png.IRZNT regsvr32.exe -
Drops desktop.ini file(s) 39 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Users\Public\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\DataServices\DESKTOP.INI regsvr32.exe File opened for modification C:\Users\Public\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Music\Sample Music\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\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\Videos\Sample Videos\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\H18KNA1T\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\Contacts\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\Public\Pictures\Sample Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Searches\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Libraries\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Videos\desktop.ini regsvr32.exe File opened for modification C:\Program Files\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Videos\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\E9RC2MV6\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\NU1L7O13\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:\Program Files (x86)\Common Files\microsoft shared\Stationery\Desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\VNYR844D\desktop.ini regsvr32.exe -
Drops file in Program Files directory 64 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\AccessWeb\SERVWRAP.ASP regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\DGDOTS.XML regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\rt.jar regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\deploy\messages_ko.properties regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.help_2.0.102.v20141007-2301\epl-v10.html regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0107482.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\OIS_COL.HXC regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Full\NavigationRight_SelectionSubpicture.png regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\SystemV\AST4ADT regsvr32.exe File created C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins3d\prc\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Guatemala regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Desert\TAB_ON.GIF regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\images\winXPBlue.png regsvr32.exe File created C:\Program Files\Java\jdk1.7.0_80\db\readme.txt regsvr32.exe File created C:\Program Files (x86)\Common Files\microsoft shared\PROOF\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0090781.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA02450_.WMF regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\ja\LC_MESSAGES\readme.txt regsvr32.exe File created C:\Program Files\Java\jre7\bin\readme.txt regsvr32.exe File created C:\Program Files\Java\jdk1.7.0_80\jre\lib\security\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-openide-loaders.xml regsvr32.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\p2\org.eclipse.equinox.p2.core\cache\binary\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\STS2\tab_on.gif regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD10267_.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD10336_.GIF regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.intro.nl_ja_4.4.0.v20140623020002.jar regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Dubai regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02753U.BMP regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0297229.WMF regsvr32.exe File created C:\Program Files\VideoLAN\VLC\lua\http\css\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.Interop.InfoPath.SemiTrust.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AN01251_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0301480.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\MakeAccessible.api regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\America\Resolute regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Vladivostok regsvr32.exe File opened for modification C:\Program Files\SaveUnpublish.ps1 regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0105292.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\WINWORD.DEV_COL.HXT regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Vignette\NavigationRight_SelectionSubpicture.png regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD15018_.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\EN00222_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SL00452_.WMF regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\16_9-frame-background.png regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Africa\Tunis regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Antarctica\Palmer regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\locale\org-openide-util_zh_CN.jar regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\calendars.properties regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE00050_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\INFOPATHEDITOR_K_COL.HXK regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\redmenu.png regsvr32.exe File created C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.docs_5.5.0.165303.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Solutions\Document.gif regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0341634.JPG regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.engine.nl_zh_4.4.0.v20140623020002.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0212601.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO00914_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\WB01750_.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\BZCARDHM.POC regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.event_1.3.100.v20140115-1647.jar regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-netbeans-modules-keyring-fallback.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\RSWOP.ICM regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0309904.WMF regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exepid process 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe 1124 regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
regsvr32.exedescription pid process target process PID 1532 wrote to memory of 1124 1532 regsvr32.exe regsvr32.exe PID 1532 wrote to memory of 1124 1532 regsvr32.exe regsvr32.exe PID 1532 wrote to memory of 1124 1532 regsvr32.exe regsvr32.exe PID 1532 wrote to memory of 1124 1532 regsvr32.exe regsvr32.exe PID 1532 wrote to memory of 1124 1532 regsvr32.exe regsvr32.exe PID 1532 wrote to memory of 1124 1532 regsvr32.exe regsvr32.exe PID 1532 wrote to memory of 1124 1532 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\8907548328b9bc8e04d0949e4a0e3bb9b749b45a32d9d95cbb9d6b27154d4310.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\8907548328b9bc8e04d0949e4a0e3bb9b749b45a32d9d95cbb9d6b27154d4310.dll2⤵
- Modifies extensions of user files
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses