Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
22-01-2025 13:25
Behavioral task
behavioral1
Sample
2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe
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Size
27KB
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MD5
b91edc9a88f5594fefc736db0269eb72
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SHA1
3be3378fb44541dafb1771184ef65339c0406b83
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SHA256
b77060ede73003ffba13c286c44dd0ef8c5b1bb7437df6c9544cc435fe3aa4d4
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SHA512
ade74383b26a9636ab405cf7e46a1680dc163b9d85345fdfd939816b0044b1cf98aa9fc59925fba9a48f3601e7b82276b0c401dcb7066a8ff87f12f8157c882a
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SSDEEP
384:QJtvVCneCtqpR86DagyzemwbZ2oz/ZmO5xNhS6U1G:utdfCIA6HbJowu1G
Malware Config
Extracted
C:\ProgramData\Adobe\Updater6\read_it.txt
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/1856-1-0x0000000000C50000-0x0000000000C5E000-memory.dmp family_chaos behavioral1/files/0x0008000000012102-7.dat family_chaos behavioral1/memory/2580-8-0x00000000000D0000-0x00000000000DE000-memory.dmp family_chaos -
Chaos family
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2556 bcdedit.exe 3012 bcdedit.exe -
pid Process 3020 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2580 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\T072YXIW\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\U8F4PBMO\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\YPLB435F\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-312935884-697965778-3955649944-1000\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\R627XHFP\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\CUMHXU73\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\98Y29LGS\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2800 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 448 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2580 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1856 2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe 1856 2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe 1856 2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe 2580 svchost.exe 2580 svchost.exe 2580 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1856 2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe Token: SeDebugPrivilege 2580 svchost.exe Token: SeBackupPrivilege 320 vssvc.exe Token: SeRestorePrivilege 320 vssvc.exe Token: SeAuditPrivilege 320 vssvc.exe Token: SeIncreaseQuotaPrivilege 3024 WMIC.exe Token: SeSecurityPrivilege 3024 WMIC.exe Token: SeTakeOwnershipPrivilege 3024 WMIC.exe Token: SeLoadDriverPrivilege 3024 WMIC.exe Token: SeSystemProfilePrivilege 3024 WMIC.exe Token: SeSystemtimePrivilege 3024 WMIC.exe Token: SeProfSingleProcessPrivilege 3024 WMIC.exe Token: SeIncBasePriorityPrivilege 3024 WMIC.exe Token: SeCreatePagefilePrivilege 3024 WMIC.exe Token: SeBackupPrivilege 3024 WMIC.exe Token: SeRestorePrivilege 3024 WMIC.exe Token: SeShutdownPrivilege 3024 WMIC.exe Token: SeDebugPrivilege 3024 WMIC.exe Token: SeSystemEnvironmentPrivilege 3024 WMIC.exe Token: SeRemoteShutdownPrivilege 3024 WMIC.exe Token: SeUndockPrivilege 3024 WMIC.exe Token: SeManageVolumePrivilege 3024 WMIC.exe Token: 33 3024 WMIC.exe Token: 34 3024 WMIC.exe Token: 35 3024 WMIC.exe Token: SeIncreaseQuotaPrivilege 3024 WMIC.exe Token: SeSecurityPrivilege 3024 WMIC.exe Token: SeTakeOwnershipPrivilege 3024 WMIC.exe Token: SeLoadDriverPrivilege 3024 WMIC.exe Token: SeSystemProfilePrivilege 3024 WMIC.exe Token: SeSystemtimePrivilege 3024 WMIC.exe Token: SeProfSingleProcessPrivilege 3024 WMIC.exe Token: SeIncBasePriorityPrivilege 3024 WMIC.exe Token: SeCreatePagefilePrivilege 3024 WMIC.exe Token: SeBackupPrivilege 3024 WMIC.exe Token: SeRestorePrivilege 3024 WMIC.exe Token: SeShutdownPrivilege 3024 WMIC.exe Token: SeDebugPrivilege 3024 WMIC.exe Token: SeSystemEnvironmentPrivilege 3024 WMIC.exe Token: SeRemoteShutdownPrivilege 3024 WMIC.exe Token: SeUndockPrivilege 3024 WMIC.exe Token: SeManageVolumePrivilege 3024 WMIC.exe Token: 33 3024 WMIC.exe Token: 34 3024 WMIC.exe Token: 35 3024 WMIC.exe Token: SeBackupPrivilege 864 wbengine.exe Token: SeRestorePrivilege 864 wbengine.exe Token: SeSecurityPrivilege 864 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1856 wrote to memory of 2580 1856 2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe 30 PID 1856 wrote to memory of 2580 1856 2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe 30 PID 1856 wrote to memory of 2580 1856 2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe 30 PID 2580 wrote to memory of 2204 2580 svchost.exe 31 PID 2580 wrote to memory of 2204 2580 svchost.exe 31 PID 2580 wrote to memory of 2204 2580 svchost.exe 31 PID 2204 wrote to memory of 2800 2204 cmd.exe 33 PID 2204 wrote to memory of 2800 2204 cmd.exe 33 PID 2204 wrote to memory of 2800 2204 cmd.exe 33 PID 2204 wrote to memory of 3024 2204 cmd.exe 36 PID 2204 wrote to memory of 3024 2204 cmd.exe 36 PID 2204 wrote to memory of 3024 2204 cmd.exe 36 PID 2580 wrote to memory of 2640 2580 svchost.exe 38 PID 2580 wrote to memory of 2640 2580 svchost.exe 38 PID 2580 wrote to memory of 2640 2580 svchost.exe 38 PID 2640 wrote to memory of 2556 2640 cmd.exe 40 PID 2640 wrote to memory of 2556 2640 cmd.exe 40 PID 2640 wrote to memory of 2556 2640 cmd.exe 40 PID 2640 wrote to memory of 3012 2640 cmd.exe 41 PID 2640 wrote to memory of 3012 2640 cmd.exe 41 PID 2640 wrote to memory of 3012 2640 cmd.exe 41 PID 2580 wrote to memory of 2652 2580 svchost.exe 42 PID 2580 wrote to memory of 2652 2580 svchost.exe 42 PID 2580 wrote to memory of 2652 2580 svchost.exe 42 PID 2652 wrote to memory of 3020 2652 cmd.exe 44 PID 2652 wrote to memory of 3020 2652 cmd.exe 44 PID 2652 wrote to memory of 3020 2652 cmd.exe 44 PID 2580 wrote to memory of 448 2580 svchost.exe 50 PID 2580 wrote to memory of 448 2580 svchost.exe 50 PID 2580 wrote to memory of 448 2580 svchost.exe 50 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1856 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops desktop.ini file(s)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2580 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2204 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2800
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3024
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:2640 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2556
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3012
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2652 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3020
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:448
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:320
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:864
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1796
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1712
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
540B
MD5fc06ea746145b09425708a2ec123519d
SHA13502166afc532c492f43beefa97e9c07b2cbbc8e
SHA2563774aab168bf8ea634f247d49fbaafdf9707c60652be2a0617f4d3a5160e5c69
SHA512f8870567b45f5632e422169a2f93105deda551ab1ee77d6286495313f938dcd6cf7d5226fc9a42abe929ecb75d19b2090cc8166d5d974462cce2f39fcf9634fe
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Filesize
27KB
MD5b91edc9a88f5594fefc736db0269eb72
SHA13be3378fb44541dafb1771184ef65339c0406b83
SHA256b77060ede73003ffba13c286c44dd0ef8c5b1bb7437df6c9544cc435fe3aa4d4
SHA512ade74383b26a9636ab405cf7e46a1680dc163b9d85345fdfd939816b0044b1cf98aa9fc59925fba9a48f3601e7b82276b0c401dcb7066a8ff87f12f8157c882a
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0