Analysis
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max time kernel
119s -
max time network
127s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
17-12-2021 10:32
Static task
static1
Behavioral task
behavioral1
Sample
a05c8129e607c6d0976d79f69c6a020d15767a9ef3a9c9f1570c5193a7b5b76b.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
a05c8129e607c6d0976d79f69c6a020d15767a9ef3a9c9f1570c5193a7b5b76b.dll
Resource
win10-en-20211208
General
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Target
a05c8129e607c6d0976d79f69c6a020d15767a9ef3a9c9f1570c5193a7b5b76b.dll
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Size
190KB
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MD5
ee328adf516df520ebe7dc79bd9d027e
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SHA1
75e3e543001895354dc556b413cb3a4a440bb3ad
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SHA256
a05c8129e607c6d0976d79f69c6a020d15767a9ef3a9c9f1570c5193a7b5b76b
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SHA512
e02b5eb0c5337437a7c0d19bde9ed8f08e4be5c85e529d217c5e9a214809914a1a4b82deee181f57eb0fb7389819273b822298a8e2bd56400b8d15b29210235e
Malware Config
Extracted
C:\readme.txt
conti
http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/
https://contirecovery.ws
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 6 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
regsvr32.exedescription ioc process File renamed C:\Users\Admin\Pictures\ConvertFromStop.raw => C:\Users\Admin\Pictures\ConvertFromStop.raw.NKDCT regsvr32.exe File renamed C:\Users\Admin\Pictures\InitializeProtect.crw => C:\Users\Admin\Pictures\InitializeProtect.crw.NKDCT regsvr32.exe File renamed C:\Users\Admin\Pictures\InstallDisconnect.raw => C:\Users\Admin\Pictures\InstallDisconnect.raw.NKDCT regsvr32.exe File renamed C:\Users\Admin\Pictures\RequestDisable.tif => C:\Users\Admin\Pictures\RequestDisable.tif.NKDCT regsvr32.exe File renamed C:\Users\Admin\Pictures\SearchGrant.tif => C:\Users\Admin\Pictures\SearchGrant.tif.NKDCT regsvr32.exe File renamed C:\Users\Admin\Pictures\SendComplete.png => C:\Users\Admin\Pictures\SendComplete.png.NKDCT regsvr32.exe -
Drops desktop.ini file(s) 46 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\FreeCell\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\SpiderSolitaire\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\Pictures\Sample Pictures\desktop.ini regsvr32.exe File opened for modification C:\Program Files\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Purble Place\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Links\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Pictures\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\Videos\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\Public\Music\Sample Music\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Videos\Sample Videos\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\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\Searches\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\QDAZQ7UR\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\Public\Recorded TV\Sample Media\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Solitaire\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Saved Games\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:\Program Files\Common Files\Microsoft Shared\Stationery\Desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\S3IV548V\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Chess\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini regsvr32.exe File opened for modification C:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Hearts\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Desktop\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:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\NK9YD4KU\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Mahjong\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\K819CMRP\desktop.ini regsvr32.exe -
Drops file in Program Files directory 64 IoCs
Processes:
regsvr32.exedescription ioc process File created C:\Program Files\VideoLAN\VLC\locale\vi\LC_MESSAGES\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18236_.WMF regsvr32.exe File created C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\readme.txt regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\tet\LC_MESSAGES\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Asia\Amman regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\VDKHome\VDK10.LIC regsvr32.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\Stationery\Desktop.ini regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0228959.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\ZPDIR6B.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO02958_.WMF regsvr32.exe File created C:\Program Files (x86)\Common Files\microsoft shared\Smart Tag\1033\readme.txt regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\jquery-ui-1.8.13.custom.css regsvr32.exe File created C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Linguistics\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD15133_.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\bg_Groove.gif regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Asia\Brunei regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Horizon.thmx regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\include\jdwpTransport.h regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\security\javafx.policy regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AG00174_.GIF regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\he\LC_MESSAGES\readme.txt regsvr32.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\p2\org.eclipse.equinox.p2.engine\profileRegistry\JMC.profile\readme.txt regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\playlist.json regsvr32.exe File created C:\Program Files\Internet Explorer\fr-FR\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0199469.WMF regsvr32.exe File created C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\de\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Library\Analysis\FUNCRES.XLAM regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\jconsole.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0093905.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18180_.WMF regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\security\blacklist regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18208_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\APPT.CFG regsvr32.exe File created C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\readme.txt regsvr32.exe File created C:\Program Files\Microsoft Games\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\mscss7wre_es.dub regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBBA\MSPUB4.BDR regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Linguistics\Providers\Proximity\11.00\can03.ths regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\management-agent.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\TASKACC.CFG regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms5\rtf_choosecolor.gif regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\BREEZE\BREEZE.ELM regsvr32.exe File created C:\Program Files (x86)\Common Files\microsoft shared\VSTA\Pipeline.v10.0\Contracts\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE00013_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0293828.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GRAPH_K_COL.HXK regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Civic.thmx regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\pa\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\AcroSign.prc regsvr32.exe File created C:\Program Files\VideoLAN\VLC\plugins\lua\readme.txt regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\readme.txt regsvr32.exe File created C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Africa\readme.txt regsvr32.exe File created C:\Program Files (x86)\Reference Assemblies\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0107258.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\MSTORE_K_COL.HXK regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms\FormsHomePageScript.js regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\BabyBoy\nav_leftarrow.png regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.preferences_3.5.200.v20140224-1527.jar regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\America\Rio_Branco regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\HueCycle\NavigationLeft_ButtonGraphic.png regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Solutions_Generic.css regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Hong_Kong regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0151067.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\XMLSDK5.CHM regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exepid process 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe 1220 regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
regsvr32.exedescription pid process target process PID 1624 wrote to memory of 1220 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 1220 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 1220 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 1220 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 1220 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 1220 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 1220 1624 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\a05c8129e607c6d0976d79f69c6a020d15767a9ef3a9c9f1570c5193a7b5b76b.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\a05c8129e607c6d0976d79f69c6a020d15767a9ef3a9c9f1570c5193a7b5b76b.dll2⤵
- Modifies extensions of user files
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:1220