Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
18-11-2020 21:34
Static task
static1
Behavioral task
behavioral1
Sample
crypt-domain.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
crypt-domain.exe
Resource
win10v20201028
General
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Target
crypt-domain.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:\57cd9b-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/84ACD01A92E0F99A
http://decryptor.cc/84ACD01A92E0F99A
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 4 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
crypt-domain.exedescription ioc process File opened for modification \??\c:\users\admin\pictures\UnprotectUninstall.tiff crypt-domain.exe File renamed C:\Users\Admin\Pictures\RenameGrant.raw => \??\c:\users\admin\pictures\RenameGrant.raw.57cd9b crypt-domain.exe File renamed C:\Users\Admin\Pictures\RenameReset.tif => \??\c:\users\admin\pictures\RenameReset.tif.57cd9b crypt-domain.exe File renamed C:\Users\Admin\Pictures\UnprotectUninstall.tiff => \??\c:\users\admin\pictures\UnprotectUninstall.tiff.57cd9b crypt-domain.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
crypt-domain.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run crypt-domain.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\FxHrkpLpWn = "C:\\Users\\Admin\\AppData\\Local\\Temp\\crypt-domain.exe" crypt-domain.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.exedescription ioc process File opened (read-only) \??\G: crypt-domain.exe File opened (read-only) \??\I: crypt-domain.exe File opened (read-only) \??\N: crypt-domain.exe File opened (read-only) \??\Q: crypt-domain.exe File opened (read-only) \??\Z: crypt-domain.exe File opened (read-only) \??\P: crypt-domain.exe File opened (read-only) \??\X: crypt-domain.exe File opened (read-only) \??\D: crypt-domain.exe File opened (read-only) \??\B: crypt-domain.exe File opened (read-only) \??\E: crypt-domain.exe File opened (read-only) \??\H: crypt-domain.exe File opened (read-only) \??\J: crypt-domain.exe File opened (read-only) \??\O: crypt-domain.exe File opened (read-only) \??\R: crypt-domain.exe File opened (read-only) \??\T: crypt-domain.exe File opened (read-only) \??\U: crypt-domain.exe File opened (read-only) \??\A: crypt-domain.exe File opened (read-only) \??\F: crypt-domain.exe File opened (read-only) \??\K: crypt-domain.exe File opened (read-only) \??\L: crypt-domain.exe File opened (read-only) \??\M: crypt-domain.exe File opened (read-only) \??\Y: crypt-domain.exe File opened (read-only) \??\S: crypt-domain.exe File opened (read-only) \??\V: crypt-domain.exe File opened (read-only) \??\W: crypt-domain.exe -
Modifies service 2 TTPs 5 IoCs
Processes:
vssvc.exedescription ioc process 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 Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer vssvc.exe 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\COM+ REGDB Writer vssvc.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
crypt-domain.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\\w0r52816.bmp" crypt-domain.exe -
Drops file in Program Files directory 19 IoCs
Processes:
crypt-domain.exedescription ioc process File opened for modification \??\c:\program files\ConvertConvertFrom.gif crypt-domain.exe File opened for modification \??\c:\program files\LimitWatch.asf crypt-domain.exe File opened for modification \??\c:\program files\PublishOptimize.rm crypt-domain.exe File opened for modification \??\c:\program files\UninstallRegister.wma crypt-domain.exe File created \??\c:\program files\57cd9b-readme.txt crypt-domain.exe File opened for modification \??\c:\program files\AssertExport.tiff crypt-domain.exe File opened for modification \??\c:\program files\DenyExit.dot crypt-domain.exe File opened for modification \??\c:\program files\StepRead.au3 crypt-domain.exe File opened for modification \??\c:\program files\UnpublishRemove.M2V crypt-domain.exe File created \??\c:\program files (x86)\57cd9b-readme.txt crypt-domain.exe File opened for modification \??\c:\program files\EnterConvertFrom.rle crypt-domain.exe File opened for modification \??\c:\program files\LockCopy.potx crypt-domain.exe File opened for modification \??\c:\program files\ProtectMove.aifc crypt-domain.exe File opened for modification \??\c:\program files\RepairMove.mht crypt-domain.exe File opened for modification \??\c:\program files\SelectLock.mpe crypt-domain.exe File opened for modification \??\c:\program files\UnpublishOptimize.pcx crypt-domain.exe File opened for modification \??\c:\program files\BackupDisable.wma crypt-domain.exe File opened for modification \??\c:\program files\PopOpen.xlt crypt-domain.exe File opened for modification \??\c:\program files\SaveRemove.xlsb crypt-domain.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
crypt-domain.exepid process 508 crypt-domain.exe 508 crypt-domain.exe 508 crypt-domain.exe 508 crypt-domain.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
crypt-domain.exevssvc.exedescription pid process Token: SeDebugPrivilege 508 crypt-domain.exe Token: SeTakeOwnershipPrivilege 508 crypt-domain.exe Token: SeBackupPrivilege 3484 vssvc.exe Token: SeRestorePrivilege 3484 vssvc.exe Token: SeAuditPrivilege 3484 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\crypt-domain.exe"C:\Users\Admin\AppData\Local\Temp\crypt-domain.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
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\57cd9b-readme.txt1⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Public\Desktop\57cd9b-readme.txtMD5
a0746df5227c810406ca98aa99a85e55
SHA1198aa8cbce70b1358765c697f7f21cb930cd5383
SHA256d425882c882702fa6bb92ba9e2a0482101a9d448345b5f93b173481a7d699811
SHA5121e9f29be3620d41c4f75291b7f4473247fd529d5d6494b2f7edef98a17f1d6ec9294f7211d90c0f90d2a65068b751905b028374aecc07e71c4de3e0d2bcc42c1