Analysis
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max time kernel
119s -
max time network
120s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-11-2020 19:27
Static task
static1
Behavioral task
behavioral1
Sample
file.dll
Resource
win7v20201028
Behavioral task
behavioral2
Sample
file.dll
Resource
win10v20201028
General
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Target
file.dll
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Size
164KB
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MD5
d017828944f5365b17520051ac994d03
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SHA1
7a5b42b5645b9685dc3864a860dd3f4a042ffc50
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SHA256
22e6baf4d3e4dba5f6f3ab349700d0169eeeb4a989b20b64a6aefba8be9fa64a
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SHA512
58e259497c0cc3bec6527685d33afa9137fcb5640be1c57b390a2ef69b1878d34f72723f5587d984d84a5b5558961a8731285b4cf3c3b733a931bd6a4d8eb4c0
Malware Config
Extracted
C:\p6tslr-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/24A06133D01CCA28
http://decryptor.cc/24A06133D01CCA28
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:
rundll32.exedescription ioc process File renamed C:\Users\Admin\Pictures\MoveAdd.raw => \??\c:\users\admin\pictures\MoveAdd.raw.p6tslr rundll32.exe File opened for modification \??\c:\users\admin\pictures\ClosePing.tiff rundll32.exe File renamed C:\Users\Admin\Pictures\ClosePing.tiff => \??\c:\users\admin\pictures\ClosePing.tiff.p6tslr rundll32.exe File renamed C:\Users\Admin\Pictures\DismountResize.raw => \??\c:\users\admin\pictures\DismountResize.raw.p6tslr rundll32.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
rundll32.exedescription ioc process File opened (read-only) \??\Y: rundll32.exe File opened (read-only) \??\A: rundll32.exe File opened (read-only) \??\F: rundll32.exe File opened (read-only) \??\H: rundll32.exe File opened (read-only) \??\L: rundll32.exe File opened (read-only) \??\R: rundll32.exe File opened (read-only) \??\S: rundll32.exe File opened (read-only) \??\U: rundll32.exe File opened (read-only) \??\Z: rundll32.exe File opened (read-only) \??\B: rundll32.exe File opened (read-only) \??\J: rundll32.exe File opened (read-only) \??\M: rundll32.exe File opened (read-only) \??\N: rundll32.exe File opened (read-only) \??\P: rundll32.exe File opened (read-only) \??\Q: rundll32.exe File opened (read-only) \??\W: rundll32.exe File opened (read-only) \??\X: rundll32.exe File opened (read-only) \??\E: rundll32.exe File opened (read-only) \??\G: rundll32.exe File opened (read-only) \??\I: rundll32.exe File opened (read-only) \??\K: rundll32.exe File opened (read-only) \??\T: rundll32.exe File opened (read-only) \??\V: rundll32.exe File opened (read-only) \??\O: rundll32.exe File opened (read-only) \??\D: rundll32.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:
rundll32.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\\5ye6b2.bmp" rundll32.exe -
Drops file in Program Files directory 14 IoCs
Processes:
rundll32.exedescription ioc process File created \??\c:\program files\p6tslr-readme.txt rundll32.exe File opened for modification \??\c:\program files\UnlockConfirm.odt rundll32.exe File opened for modification \??\c:\program files\EditBlock.jfif rundll32.exe File opened for modification \??\c:\program files\ExportLimit.gif rundll32.exe File opened for modification \??\c:\program files\UpdateLimit.aiff rundll32.exe File opened for modification \??\c:\program files\ConfirmConnect.mpeg2 rundll32.exe File opened for modification \??\c:\program files\ImportGroup.rar rundll32.exe File opened for modification \??\c:\program files\CompressDisable.svg rundll32.exe File opened for modification \??\c:\program files\ConvertToMount.vbs rundll32.exe File opened for modification \??\c:\program files\EnableTrace.m3u rundll32.exe File opened for modification \??\c:\program files\RedoResize.docm rundll32.exe File opened for modification \??\c:\program files\RegisterResume.ini rundll32.exe File created \??\c:\program files (x86)\p6tslr-readme.txt rundll32.exe File opened for modification \??\c:\program files\ComparePublish.rle rundll32.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
rundll32.exepowershell.exepid process 544 rundll32.exe 544 rundll32.exe 792 powershell.exe 792 powershell.exe 792 powershell.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
rundll32.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 544 rundll32.exe Token: SeDebugPrivilege 792 powershell.exe Token: SeBackupPrivilege 2844 vssvc.exe Token: SeRestorePrivilege 2844 vssvc.exe Token: SeAuditPrivilege 2844 vssvc.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 3324 wrote to memory of 544 3324 rundll32.exe rundll32.exe PID 3324 wrote to memory of 544 3324 rundll32.exe rundll32.exe PID 3324 wrote to memory of 544 3324 rundll32.exe rundll32.exe PID 544 wrote to memory of 792 544 rundll32.exe powershell.exe PID 544 wrote to memory of 792 544 rundll32.exe powershell.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\file.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\file.dll,#12⤵
- 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==3⤵
- 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/544-0-0x0000000000000000-mapping.dmp
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memory/792-1-0x0000000000000000-mapping.dmp
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memory/792-2-0x00007FFB89B60000-0x00007FFB8A54C000-memory.dmpFilesize
9.9MB
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memory/792-3-0x000002991E130000-0x000002991E131000-memory.dmpFilesize
4KB
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memory/792-4-0x0000029938570000-0x0000029938571000-memory.dmpFilesize
4KB