Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
20-11-2020 02:40
Static task
static1
Behavioral task
behavioral1
Sample
crypt-domain.bin.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
crypt-domain.bin.exe
Resource
win10v20201028
General
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Target
crypt-domain.bin.exe
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Size
600KB
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MD5
f0db9243fdd14d4755f5b12860d0394d
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SHA1
ff1b6fc9398035917e232352fbfae8db7805b5ca
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SHA256
8c716101e118ac65d7bdb900e0100d012256abb1d7cdf64830e5943a795ccce2
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SHA512
824b21d96fa8ccdad18a8af1aa2dd234fb8c8487a6f81d9b98bdd4108c1ccfd28042b4c3f8bef9a74fadbc22853cc027ee4601f30928fd4ad611f2a38562e96e
Malware Config
Extracted
C:\kbsk57vs-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/AF81B729E6CF6FDD
http://decryptor.cc/AF81B729E6CF6FDD
Signatures
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Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
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Modifies extensions of user files 8 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
crypt-domain.bin.exedescription ioc process File renamed C:\Users\Admin\Pictures\NewConnect.crw => \??\c:\users\admin\pictures\NewConnect.crw.kbsk57vs crypt-domain.bin.exe File renamed C:\Users\Admin\Pictures\SetDisable.crw => \??\c:\users\admin\pictures\SetDisable.crw.kbsk57vs crypt-domain.bin.exe File renamed C:\Users\Admin\Pictures\SyncCheckpoint.raw => \??\c:\users\admin\pictures\SyncCheckpoint.raw.kbsk57vs crypt-domain.bin.exe File renamed C:\Users\Admin\Pictures\SyncComplete.tiff => \??\c:\users\admin\pictures\SyncComplete.tiff.kbsk57vs crypt-domain.bin.exe File renamed C:\Users\Admin\Pictures\UnregisterUse.tiff => \??\c:\users\admin\pictures\UnregisterUse.tiff.kbsk57vs crypt-domain.bin.exe File opened for modification \??\c:\users\admin\pictures\SyncComplete.tiff crypt-domain.bin.exe File opened for modification \??\c:\users\admin\pictures\UnregisterUse.tiff crypt-domain.bin.exe File renamed C:\Users\Admin\Pictures\DenyGet.png => \??\c:\users\admin\pictures\DenyGet.png.kbsk57vs crypt-domain.bin.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
crypt-domain.bin.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\FxHrkpLpWn = "C:\\Users\\Admin\\AppData\\Local\\Temp\\crypt-domain.bin.exe" crypt-domain.bin.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run crypt-domain.bin.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
crypt-domain.bin.exedescription ioc process File opened (read-only) \??\M: crypt-domain.bin.exe File opened (read-only) \??\P: crypt-domain.bin.exe File opened (read-only) \??\T: crypt-domain.bin.exe File opened (read-only) \??\Y: crypt-domain.bin.exe File opened (read-only) \??\I: crypt-domain.bin.exe File opened (read-only) \??\G: crypt-domain.bin.exe File opened (read-only) \??\H: crypt-domain.bin.exe File opened (read-only) \??\J: crypt-domain.bin.exe File opened (read-only) \??\U: crypt-domain.bin.exe File opened (read-only) \??\E: crypt-domain.bin.exe File opened (read-only) \??\K: crypt-domain.bin.exe File opened (read-only) \??\L: crypt-domain.bin.exe File opened (read-only) \??\Q: crypt-domain.bin.exe File opened (read-only) \??\W: crypt-domain.bin.exe File opened (read-only) \??\X: crypt-domain.bin.exe File opened (read-only) \??\D: crypt-domain.bin.exe File opened (read-only) \??\A: crypt-domain.bin.exe File opened (read-only) \??\F: crypt-domain.bin.exe File opened (read-only) \??\N: crypt-domain.bin.exe File opened (read-only) \??\O: crypt-domain.bin.exe File opened (read-only) \??\R: crypt-domain.bin.exe File opened (read-only) \??\S: crypt-domain.bin.exe File opened (read-only) \??\V: crypt-domain.bin.exe File opened (read-only) \??\Z: crypt-domain.bin.exe File opened (read-only) \??\B: crypt-domain.bin.exe -
Modifies service 2 TTPs 5 IoCs
Processes:
vssvc.exedescription ioc process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\SwProvider_{b5946137-7b9f-4925-af80-51abd60b20d5} vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\ASR Writer vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization Writer vssvc.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
crypt-domain.bin.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\221m14k21.bmp" crypt-domain.bin.exe -
Drops file in Program Files directory 32 IoCs
Processes:
crypt-domain.bin.exedescription ioc process File opened for modification \??\c:\program files\SyncRepair.xlsb crypt-domain.bin.exe File opened for modification \??\c:\program files\AddFind.js crypt-domain.bin.exe File opened for modification \??\c:\program files\ConfirmFind.txt crypt-domain.bin.exe File opened for modification \??\c:\program files\SearchRead.i64 crypt-domain.bin.exe File opened for modification \??\c:\program files\SkipOut.wmv crypt-domain.bin.exe File opened for modification \??\c:\program files\UndoOptimize.aif crypt-domain.bin.exe File opened for modification \??\c:\program files\ClearApprove.wpl crypt-domain.bin.exe File opened for modification \??\c:\program files\DisconnectMount.css crypt-domain.bin.exe File opened for modification \??\c:\program files\MoveRename.WTV crypt-domain.bin.exe File opened for modification \??\c:\program files\ProtectResume.3gp crypt-domain.bin.exe File opened for modification \??\c:\program files\PublishSet.kix crypt-domain.bin.exe File opened for modification \??\c:\program files\PushTrace.xltx crypt-domain.bin.exe File opened for modification \??\c:\program files\WatchImport.dot crypt-domain.bin.exe File opened for modification \??\c:\program files\ConvertGet.aiff crypt-domain.bin.exe File opened for modification \??\c:\program files\EnableProtect.mov crypt-domain.bin.exe File opened for modification \??\c:\program files\GroupExit.avi crypt-domain.bin.exe File opened for modification \??\c:\program files\CopyBlock.eprtx crypt-domain.bin.exe File opened for modification \??\c:\program files\RepairResume.png crypt-domain.bin.exe File opened for modification \??\c:\program files\UpdateSync.iso crypt-domain.bin.exe File opened for modification \??\c:\program files\CopySwitch.vstm crypt-domain.bin.exe File opened for modification \??\c:\program files\UnprotectUnlock.crw crypt-domain.bin.exe File opened for modification \??\c:\program files\UpdateResolve.htm crypt-domain.bin.exe File created \??\c:\program files\kbsk57vs-readme.txt crypt-domain.bin.exe File created \??\c:\program files (x86)\kbsk57vs-readme.txt crypt-domain.bin.exe File opened for modification \??\c:\program files\ApproveWatch.mp3 crypt-domain.bin.exe File opened for modification \??\c:\program files\CompleteInvoke.tmp crypt-domain.bin.exe File opened for modification \??\c:\program files\ConfirmRepair.xltm crypt-domain.bin.exe File opened for modification \??\c:\program files\CopyImport.wmx crypt-domain.bin.exe File opened for modification \??\c:\program files\DisableReset.emz crypt-domain.bin.exe File opened for modification \??\c:\program files\GetUndo.mp2 crypt-domain.bin.exe File opened for modification \??\c:\program files\SplitRedo.wma crypt-domain.bin.exe File opened for modification \??\c:\program files\TestDisconnect.tmp crypt-domain.bin.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
crypt-domain.bin.exepid process 500 crypt-domain.bin.exe 500 crypt-domain.bin.exe 500 crypt-domain.bin.exe 500 crypt-domain.bin.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
crypt-domain.bin.exevssvc.exedescription pid process Token: SeDebugPrivilege 500 crypt-domain.bin.exe Token: SeTakeOwnershipPrivilege 500 crypt-domain.bin.exe Token: SeBackupPrivilege 3748 vssvc.exe Token: SeRestorePrivilege 3748 vssvc.exe Token: SeAuditPrivilege 3748 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\crypt-domain.bin.exe"C:\Users\Admin\AppData\Local\Temp\crypt-domain.bin.exe"1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken