Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
11/10/2022, 02:20
Behavioral task
behavioral1
Sample
655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe
Resource
win10v2004-20220901-en
General
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Target
655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe
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Size
691KB
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MD5
69950e0d51180596a026acc2563f6edd
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SHA1
3f04f609b6f243d8510f21ffc851aa2ba2ba34e2
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SHA256
655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb
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SHA512
ee1d495cd883c87a897034a1addeaa79fd4ab2974fc381a95ba8837b417ec812e22c8d54ab78b6b93711fe52bf477fefab7a2e96e18e69073c9ae02875cac362
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SSDEEP
12288:r9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKH:5AQ6Zx9cxTmOrucTIEFSpOG
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe" 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe -
Modifies firewall policy service 2 TTPs 6 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" explorer.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile winupdate.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" winupdate.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" winupdate.exe -
Modifies security service 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" winupdate.exe -
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" winupdate.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" winupdate.exe -
Executes dropped EXE 1 IoCs
pid Process 1752 winupdate.exe -
Checks BIOS information in registry 2 TTPs 3 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate winupdate.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe -
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" winupdate.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" winupdate.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" notepad.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1964 set thread context of 1840 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 82 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 12 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier explorer.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier winupdate.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier explorer.exe -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier winupdate.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeSecurityPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeTakeOwnershipPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeLoadDriverPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeSystemProfilePrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeSystemtimePrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeProfSingleProcessPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeIncBasePriorityPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeCreatePagefilePrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeBackupPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeRestorePrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeShutdownPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeDebugPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeSystemEnvironmentPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeChangeNotifyPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeRemoteShutdownPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeUndockPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeManageVolumePrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeImpersonatePrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeCreateGlobalPrivilege 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: 33 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: 34 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: 35 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: 36 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe Token: SeIncreaseQuotaPrivilege 1840 explorer.exe Token: SeSecurityPrivilege 1840 explorer.exe Token: SeTakeOwnershipPrivilege 1840 explorer.exe Token: SeLoadDriverPrivilege 1840 explorer.exe Token: SeSystemProfilePrivilege 1840 explorer.exe Token: SeSystemtimePrivilege 1840 explorer.exe Token: SeProfSingleProcessPrivilege 1840 explorer.exe Token: SeIncBasePriorityPrivilege 1840 explorer.exe Token: SeCreatePagefilePrivilege 1840 explorer.exe Token: SeBackupPrivilege 1840 explorer.exe Token: SeRestorePrivilege 1840 explorer.exe Token: SeShutdownPrivilege 1840 explorer.exe Token: SeDebugPrivilege 1840 explorer.exe Token: SeSystemEnvironmentPrivilege 1840 explorer.exe Token: SeChangeNotifyPrivilege 1840 explorer.exe Token: SeRemoteShutdownPrivilege 1840 explorer.exe Token: SeUndockPrivilege 1840 explorer.exe Token: SeManageVolumePrivilege 1840 explorer.exe Token: SeImpersonatePrivilege 1840 explorer.exe Token: SeCreateGlobalPrivilege 1840 explorer.exe Token: 33 1840 explorer.exe Token: 34 1840 explorer.exe Token: 35 1840 explorer.exe Token: 36 1840 explorer.exe Token: SeIncreaseQuotaPrivilege 1752 winupdate.exe Token: SeSecurityPrivilege 1752 winupdate.exe Token: SeTakeOwnershipPrivilege 1752 winupdate.exe Token: SeLoadDriverPrivilege 1752 winupdate.exe Token: SeSystemProfilePrivilege 1752 winupdate.exe Token: SeSystemtimePrivilege 1752 winupdate.exe Token: SeProfSingleProcessPrivilege 1752 winupdate.exe Token: SeIncBasePriorityPrivilege 1752 winupdate.exe Token: SeCreatePagefilePrivilege 1752 winupdate.exe Token: SeBackupPrivilege 1752 winupdate.exe Token: SeRestorePrivilege 1752 winupdate.exe Token: SeShutdownPrivilege 1752 winupdate.exe Token: SeDebugPrivilege 1752 winupdate.exe Token: SeSystemEnvironmentPrivilege 1752 winupdate.exe Token: SeChangeNotifyPrivilege 1752 winupdate.exe Token: SeRemoteShutdownPrivilege 1752 winupdate.exe -
Suspicious use of WriteProcessMemory 31 IoCs
description pid Process procid_target PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 928 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 81 PID 1964 wrote to memory of 1840 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 82 PID 1964 wrote to memory of 1840 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 82 PID 1964 wrote to memory of 1840 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 82 PID 1964 wrote to memory of 1840 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 82 PID 1964 wrote to memory of 1840 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 82 PID 1964 wrote to memory of 1752 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 83 PID 1964 wrote to memory of 1752 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 83 PID 1964 wrote to memory of 1752 1964 655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe 83 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern winupdate.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" winupdate.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion winupdate.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe"C:\Users\Admin\AppData\Local\Temp\655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb.exe"1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1964 -
C:\Windows\SysWOW64\notepad.exenotepad2⤵
- Adds Run key to start application
PID:928
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C:\Windows\SysWOW64\explorer.exe"C:\Windows\SysWOW64\explorer.exe"2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Checks BIOS information in registry
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:1840
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C:\Windupdt\winupdate.exe"C:\Windupdt\winupdate.exe"2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Executes dropped EXE
- Checks BIOS information in registry
- Windows security modification
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- System policy modification
PID:1752
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
691KB
MD569950e0d51180596a026acc2563f6edd
SHA13f04f609b6f243d8510f21ffc851aa2ba2ba34e2
SHA256655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb
SHA512ee1d495cd883c87a897034a1addeaa79fd4ab2974fc381a95ba8837b417ec812e22c8d54ab78b6b93711fe52bf477fefab7a2e96e18e69073c9ae02875cac362
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Filesize
691KB
MD569950e0d51180596a026acc2563f6edd
SHA13f04f609b6f243d8510f21ffc851aa2ba2ba34e2
SHA256655ef626d7ead3acd103c22386068e1eca7d309d143abad6015368e4e9dcafcb
SHA512ee1d495cd883c87a897034a1addeaa79fd4ab2974fc381a95ba8837b417ec812e22c8d54ab78b6b93711fe52bf477fefab7a2e96e18e69073c9ae02875cac362