Analysis
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max time kernel
137s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 01:14
Behavioral task
behavioral1
Sample
524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe
Resource
win10v2004-20240508-en
General
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Target
524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe
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Size
3.2MB
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MD5
db5c28ec647afd894c01422584d551a5
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SHA1
fa0b5ebcb983509eebc7222725792976fad2aca8
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SHA256
524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4
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SHA512
730054505deddeeefce4b1cc3b8ea362946e9e12ea289bc64285c0ce417d8964a767d03ccdf69ab4dd184d9888b9f3c1b51134cfb9c067861b5c1f4c06a3f67a
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SSDEEP
24576:s0JR6V45PL2ybTlBpPcmtR9tArJms0dIU1wuKav4WgNFlLKKDGyMgl+ICHusEd:5iylZ9tAcBSGgJtAZu
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/2800-1-0x0000000000590000-0x00000000008CC000-memory.dmp family_chaos behavioral2/files/0x000800000002353b-7.dat family_chaos -
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 2 IoCs
resource yara_rule behavioral2/memory/2800-1-0x0000000000590000-0x00000000008CC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x000800000002353b-7.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1696 bcdedit.exe 1800 bcdedit.exe -
pid Process 4556 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe 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\Leggimi.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 748 svchost.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1181767204-2009306918-3718769404-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\Searches\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\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Public\Music\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\y7skcvkmv.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4232 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1728 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 748 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe 748 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe Token: SeDebugPrivilege 748 svchost.exe Token: SeBackupPrivilege 676 vssvc.exe Token: SeRestorePrivilege 676 vssvc.exe Token: SeAuditPrivilege 676 vssvc.exe Token: SeIncreaseQuotaPrivilege 4560 WMIC.exe Token: SeSecurityPrivilege 4560 WMIC.exe Token: SeTakeOwnershipPrivilege 4560 WMIC.exe Token: SeLoadDriverPrivilege 4560 WMIC.exe Token: SeSystemProfilePrivilege 4560 WMIC.exe Token: SeSystemtimePrivilege 4560 WMIC.exe Token: SeProfSingleProcessPrivilege 4560 WMIC.exe Token: SeIncBasePriorityPrivilege 4560 WMIC.exe Token: SeCreatePagefilePrivilege 4560 WMIC.exe Token: SeBackupPrivilege 4560 WMIC.exe Token: SeRestorePrivilege 4560 WMIC.exe Token: SeShutdownPrivilege 4560 WMIC.exe Token: SeDebugPrivilege 4560 WMIC.exe Token: SeSystemEnvironmentPrivilege 4560 WMIC.exe Token: SeRemoteShutdownPrivilege 4560 WMIC.exe Token: SeUndockPrivilege 4560 WMIC.exe Token: SeManageVolumePrivilege 4560 WMIC.exe Token: 33 4560 WMIC.exe Token: 34 4560 WMIC.exe Token: 35 4560 WMIC.exe Token: 36 4560 WMIC.exe Token: SeIncreaseQuotaPrivilege 4560 WMIC.exe Token: SeSecurityPrivilege 4560 WMIC.exe Token: SeTakeOwnershipPrivilege 4560 WMIC.exe Token: SeLoadDriverPrivilege 4560 WMIC.exe Token: SeSystemProfilePrivilege 4560 WMIC.exe Token: SeSystemtimePrivilege 4560 WMIC.exe Token: SeProfSingleProcessPrivilege 4560 WMIC.exe Token: SeIncBasePriorityPrivilege 4560 WMIC.exe Token: SeCreatePagefilePrivilege 4560 WMIC.exe Token: SeBackupPrivilege 4560 WMIC.exe Token: SeRestorePrivilege 4560 WMIC.exe Token: SeShutdownPrivilege 4560 WMIC.exe Token: SeDebugPrivilege 4560 WMIC.exe Token: SeSystemEnvironmentPrivilege 4560 WMIC.exe Token: SeRemoteShutdownPrivilege 4560 WMIC.exe Token: SeUndockPrivilege 4560 WMIC.exe Token: SeManageVolumePrivilege 4560 WMIC.exe Token: 33 4560 WMIC.exe Token: 34 4560 WMIC.exe Token: 35 4560 WMIC.exe Token: 36 4560 WMIC.exe Token: SeBackupPrivilege 3076 wbengine.exe Token: SeRestorePrivilege 3076 wbengine.exe Token: SeSecurityPrivilege 3076 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2800 wrote to memory of 748 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 105 PID 2800 wrote to memory of 748 2800 524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe 105 PID 748 wrote to memory of 3752 748 svchost.exe 108 PID 748 wrote to memory of 3752 748 svchost.exe 108 PID 3752 wrote to memory of 4232 3752 cmd.exe 110 PID 3752 wrote to memory of 4232 3752 cmd.exe 110 PID 3752 wrote to memory of 4560 3752 cmd.exe 113 PID 3752 wrote to memory of 4560 3752 cmd.exe 113 PID 748 wrote to memory of 4508 748 svchost.exe 114 PID 748 wrote to memory of 4508 748 svchost.exe 114 PID 4508 wrote to memory of 1696 4508 cmd.exe 116 PID 4508 wrote to memory of 1696 4508 cmd.exe 116 PID 4508 wrote to memory of 1800 4508 cmd.exe 117 PID 4508 wrote to memory of 1800 4508 cmd.exe 117 PID 748 wrote to memory of 3988 748 svchost.exe 118 PID 748 wrote to memory of 3988 748 svchost.exe 118 PID 3988 wrote to memory of 4556 3988 cmd.exe 120 PID 3988 wrote to memory of 4556 3988 cmd.exe 120 PID 748 wrote to memory of 1728 748 svchost.exe 124 PID 748 wrote to memory of 1728 748 svchost.exe 124 -
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\524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe"C:\Users\Admin\AppData\Local\Temp\524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2800 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:748 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3752 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4232
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4560
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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:4508 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1696
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1800
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3988 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4556
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Leggimi.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1728
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3744,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=3148 /prefetch:81⤵PID:3456
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:676
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3076
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4460
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3680
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.2MB
MD5db5c28ec647afd894c01422584d551a5
SHA1fa0b5ebcb983509eebc7222725792976fad2aca8
SHA256524a898e18999ceac864dbac5b85fa2f14392e389b3c32f77d58e2a89cdf01c4
SHA512730054505deddeeefce4b1cc3b8ea362946e9e12ea289bc64285c0ce417d8964a767d03ccdf69ab4dd184d9888b9f3c1b51134cfb9c067861b5c1f4c06a3f67a
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Filesize
437B
MD59c5d9fd5db486b31324ad8eef0558c1b
SHA14d6e0b43ae59b8420730294d371118d6e429157f
SHA2561f2154533308355548ad3694f03cc1582bc0aa549173a5d11920ac38469d6f3b
SHA512b5c27756cbf8756dcfea07c6134e8711b61fcaa87360056609d65354e845adf2f00bc05140bf40044675b7c6cc7ef0b546bad3886a4cf34d12251570b49e80f7