Analysis
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max time kernel
119s -
max time network
119s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
20-01-2022 11:33
Static task
static1
Behavioral task
behavioral1
Sample
904e0855772f56721cc157641a26bb7963651e5a45c3bb90764328b17081abd5.bin.sample.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
904e0855772f56721cc157641a26bb7963651e5a45c3bb90764328b17081abd5.bin.sample.dll
Resource
win10v2004-en-20220112
General
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Target
904e0855772f56721cc157641a26bb7963651e5a45c3bb90764328b17081abd5.bin.sample.dll
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Size
190KB
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MD5
641d7e44b87e88608443d6423937d983
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SHA1
7e9f57de4eaf2fa3535c1b4f0c5fa1f33b3dd2ac
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SHA256
904e0855772f56721cc157641a26bb7963651e5a45c3bb90764328b17081abd5
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SHA512
f0c40529be05c7631bd91d94232dbc9036780565f05863c3253e273f1b84156c4cede68f594d645c52f2f8478b6c3b36e312a9bf4f78c4a94ed65fed0b2d372b
Malware Config
Extracted
C:\readme.txt
conti
http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/
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 5 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
regsvr32.exedescription ioc process File renamed C:\Users\Admin\Pictures\StartHide.crw => C:\Users\Admin\Pictures\StartHide.crw.TXOZF regsvr32.exe File renamed C:\Users\Admin\Pictures\MeasureNew.tif => C:\Users\Admin\Pictures\MeasureNew.tif.TXOZF regsvr32.exe File renamed C:\Users\Admin\Pictures\NewTrace.raw => C:\Users\Admin\Pictures\NewTrace.raw.TXOZF regsvr32.exe File renamed C:\Users\Admin\Pictures\ReadCompress.raw => C:\Users\Admin\Pictures\ReadCompress.raw.TXOZF regsvr32.exe File renamed C:\Users\Admin\Pictures\ResolveInstall.png => C:\Users\Admin\Pictures\ResolveInstall.png.TXOZF regsvr32.exe -
Drops desktop.ini file(s) 46 IoCs
Processes:
regsvr32.exedescription ioc process 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:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\H2R8HLJC\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\ZZZ3YRT4\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\SpiderSolitaire\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Documents\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Links\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\Mahjong\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\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\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Public\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Downloads\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\E16QEJ8K\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\VL9MRVWS\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\Microsoft Games\Chess\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\Contacts\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Documents\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\Hearts\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\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\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\Searches\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Music\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:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\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\Recorded TV\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\Links\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\Saved Games\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 -
Drops file in Program Files directory 64 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Program Files (x86)\Common Files\System\Ole DB\ja-JP\sqloledb.rll.mui regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Median.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\PROFILE\THMBNAIL.PNG regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Yerevan regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\rjmx.jar 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\META-INF\ECLIPSE_.RSA regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-spi-quicksearch_ja.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO00199_.WMF regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\fonts\LucidaTypewriterBold.ttf regsvr32.exe File created C:\Program Files\Microsoft Games\Multiplayer\Checkers\fr-FR\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD10254_.GIF regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.babel.nls_eclipse_zh_4.4.0.v20140623020002\epl-v10.html regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Postage_ButtonGraphic.png regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02750U.BMP regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SL01040_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\DD00705_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA00525_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\DGPUNCT.XML regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\LINES\BD21321_.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\NOTES.ICO regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.widgets.nl_zh_4.4.0.v20140623020002.jar regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Makassar regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Pacific\Majuro regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\EXCEL.DEV_F_COL.HXK regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\OIS_COL.HXT regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\com.jrockit.mc.feature.rcp.ja_5.5.0.165303\feature.properties regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\SECRECS.ICO regsvr32.exe File created C:\Program Files\Microsoft Games\More Games\ja-JP\readme.txt regsvr32.exe File created C:\Program Files\Common Files\Microsoft Shared\ink\pt-BR\readme.txt regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\vlc16x16.png regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGMN092.XML regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\it\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\VDKHome\ENU\VDK10.STC regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-core-execution.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\MSPUB_K_COL.HXK regsvr32.exe File created C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\PublicAssemblies\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\MSPUB.DEV_K_COL.HXK regsvr32.exe File created C:\Program Files\Common Files\System\ado\en-US\readme.txt regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\ne\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Pacific\Midway regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\NEWS11.POC regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\LINES\BD21320_.GIF regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-netbeans-modules-autoupdate-ui.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AN01218_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0238983.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\EXITEMS.ICO regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Solutions.css regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Mazatlan regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\org-netbeans-lib-profiler-ui.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HH00681_.WMF regsvr32.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\keypad.xml regsvr32.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\auxpad.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO00223_.WMF regsvr32.exe File created C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0188669.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA02426_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0285698.WMF regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\SpecialOccasion\NavigationRight_ButtonGraphic.png regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\th\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\EN00006_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0186364.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolIcons\MAIL.ICO regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Europe\Monaco regsvr32.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.e4.rcp_1.3.100.v20141007-2033\META-INF\readme.txt regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exepid process 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe 836 regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
regsvr32.exedescription pid process target process PID 1624 wrote to memory of 836 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 836 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 836 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 836 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 836 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 836 1624 regsvr32.exe regsvr32.exe PID 1624 wrote to memory of 836 1624 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\904e0855772f56721cc157641a26bb7963651e5a45c3bb90764328b17081abd5.bin.sample.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\904e0855772f56721cc157641a26bb7963651e5a45c3bb90764328b17081abd5.bin.sample.dll2⤵
- Modifies extensions of user files
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:836