Resubmissions
27-01-2022 18:30
220127-w5lsfshfb8 1027-01-2022 18:25
220127-w2vwysghbr 1027-01-2022 18:21
220127-wzqjfshef7 8Analysis
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max time kernel
117s -
max time network
117s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
27-01-2022 18:25
Static task
static1
Behavioral task
behavioral1
Sample
2f76c2801b2bac498e94d68e99117c5367af97e0.dll
Resource
win7-en-20211208
General
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Target
2f76c2801b2bac498e94d68e99117c5367af97e0.dll
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Size
678KB
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MD5
7ff8505ce55eaf44baf843d3683c5e39
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SHA1
2f76c2801b2bac498e94d68e99117c5367af97e0
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SHA256
5e54dfc50c22a8cd92c5d05598bbafc75b999b93224d900017b892a4d9f22077
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SHA512
bf51272fcf62d9ed3d33718cb1fb707794680b65ea9dcd22f5b5cb28441e7b2423d6bfe43407b2adf4556a88058b5fbc757da6e961d57d34003f15548d2628f0
Malware Config
Extracted
C:\readme.txt
conti
http://contirec7nchr45rx6ympez5rjldibnqzh7lsa56lvjvaeywhvoj3wad.onion/8LijJVnUPEWEaSDvo6Ho56xzmhj8AwiSqncJYX3Hhd3hLoOajUpUdvIF4GHP69AP
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 7 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\ProtectRedo.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\ProtectRedo.tiff => C:\Users\Admin\Pictures\ProtectRedo.tiff.SACUR regsvr32.exe File renamed C:\Users\Admin\Pictures\UnprotectReset.crw => C:\Users\Admin\Pictures\UnprotectReset.crw.SACUR regsvr32.exe File renamed C:\Users\Admin\Pictures\UseInstall.png => C:\Users\Admin\Pictures\UseInstall.png.SACUR regsvr32.exe File renamed C:\Users\Admin\Pictures\CheckpointPush.tif => C:\Users\Admin\Pictures\CheckpointPush.tif.SACUR regsvr32.exe File renamed C:\Users\Admin\Pictures\GroupAssert.crw => C:\Users\Admin\Pictures\GroupAssert.crw.SACUR regsvr32.exe File renamed C:\Users\Admin\Pictures\MountCopy.png => C:\Users\Admin\Pictures\MountCopy.png.SACUR regsvr32.exe -
Drops desktop.ini file(s) 46 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Users\Public\Desktop\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Favorites\Links\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\Public\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\Links\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Pictures\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\Sample Videos\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\Favorites\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Searches\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:\Program Files\Microsoft Games\Mahjong\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\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini regsvr32.exe File opened for modification C:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Videos\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Videos\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:\Program Files (x86)\Microsoft Office\Office14\1033\DataServices\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\Contacts\desktop.ini regsvr32.exe File opened for modification C:\Users\Admin\Desktop\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:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\ZZZ3YRT4\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\Documents\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:\Program Files (x86)\Common Files\microsoft shared\Stationery\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:\Program Files\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\Solitaire\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\AppData\Local\Microsoft\Feeds Cache\VL9MRVWS\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\Public\Downloads\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Pictures\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini regsvr32.exe -
Drops file in Program Files directory 64 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rcp.application.ja_5.5.0.165303.jar regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.repository_2.3.0.v20131211-1531.jar regsvr32.exe File created C:\Program Files\VideoLAN\VLC\lua\intf\modules\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA00389_.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\ended_review_or_form.gif 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\Common Files\Microsoft Shared\ink\fsdefinitions\keypad\kor-kor.xml regsvr32.exe File opened for modification C:\Program Files\Google\Chrome\Application\89.0.4389.114\default_apps\gmail.crx regsvr32.exe File created C:\Program Files\VideoLAN\VLC\locale\eu\LC_MESSAGES\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\Sounds\People\SNEEZE.WAV regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.BusinessApplications.Runtime.xml regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0106222.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\TN00217_.WMF regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Europe\Copenhagen regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\toc.gif regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0099189.JPG regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0216153.JPG regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE00737_.WMF 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\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-netbeans-modules-templates.xml regsvr32.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\FormsStyles\BrightYellow\readme.txt regsvr32.exe File created C:\Program Files\Java\jre7\lib\ext\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBFTSCM\SCHEME17.CSS regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\SCHDRESN.CFG regsvr32.exe File created C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Americana\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-swing-tabcontrol_ja.jar regsvr32.exe File opened for modification C:\Program Files\7-Zip\License.txt regsvr32.exe File created C:\Program Files\VideoLAN\VLC\plugins\lua\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD15023_.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolBMPs\WSSFilesToolIconImages.jpg regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\America\Santa_Isabel regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\CommonData\CommsOutgoingImage.jpg regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Thatch.thmx regsvr32.exe File created C:\Program Files\Microsoft Games\Minesweeper\en-US\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\JOURNAL\PREVIEW.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\RIPPLE\RIPPLE.ELM regsvr32.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\configuration\readme.txt regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Etc\GMT-6 regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\Sounds\Things\COUPLER.WAV regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.core.feature_1.1.0.v20140827-1444\epl-v10.html regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\EXLIRMV.XML regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\POWERPNT.DEV_F_COL.HXK regsvr32.exe File opened for modification C:\Program Files\Google\Chrome\Application\89.0.4389.114\Locales\he.pak regsvr32.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.jsp.jasper_1.0.400.v20130327-1442.jar regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\Office Setup Controller\Office.en-us\SETUP.CHM regsvr32.exe File created C:\Program Files (x86)\Common Files\System\es-ES\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0152696.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\TRANSLAT\FRAR\MSB1FRAR.ITS regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\QuickStyles\Formal.dotx regsvr32.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Indian\Mahe regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\hi\LC_MESSAGES\vlc.mo regsvr32.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\BIZCARD.XML regsvr32.exe File opened for modification C:\Program Files\Google\Chrome\Application\89.0.4389.114\Locales\lt.pak regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\POWERPNT.DEV_COL.HXC regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\PDIR48F.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\Premium.css regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02470U.BMP regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\TAIL.WMF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\BORDERS\MSART12.BDR regsvr32.exe File created C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\LEVEL\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD21377_.GIF regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\ZPDIR38F.GIF regsvr32.exe File created C:\Program Files (x86)\Common Files\microsoft shared\VSTO\10.0\1033\readme.txt regsvr32.exe -
Drops file in Windows directory 1 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Windows\win.ini regsvr32.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 572 952 WerFault.exe regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exepid process 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe 952 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WerFault.exedescription pid process Token: SeDebugPrivilege 572 WerFault.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
regsvr32.exeregsvr32.exedescription pid process target process PID 828 wrote to memory of 952 828 regsvr32.exe regsvr32.exe PID 828 wrote to memory of 952 828 regsvr32.exe regsvr32.exe PID 828 wrote to memory of 952 828 regsvr32.exe regsvr32.exe PID 828 wrote to memory of 952 828 regsvr32.exe regsvr32.exe PID 828 wrote to memory of 952 828 regsvr32.exe regsvr32.exe PID 828 wrote to memory of 952 828 regsvr32.exe regsvr32.exe PID 828 wrote to memory of 952 828 regsvr32.exe regsvr32.exe PID 952 wrote to memory of 572 952 regsvr32.exe WerFault.exe PID 952 wrote to memory of 572 952 regsvr32.exe WerFault.exe PID 952 wrote to memory of 572 952 regsvr32.exe WerFault.exe PID 952 wrote to memory of 572 952 regsvr32.exe WerFault.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\2f76c2801b2bac498e94d68e99117c5367af97e0.dll1⤵
- Suspicious use of WriteProcessMemory
PID:828 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\2f76c2801b2bac498e94d68e99117c5367af97e0.dll2⤵
- Modifies extensions of user files
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:952 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 4843⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:572