Analysis
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max time kernel
117s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23-04-2024 09:32
Behavioral task
behavioral1
Sample
2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe
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Size
279KB
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MD5
fa2bc41c30b3a2941d80fc425fc2a77c
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SHA1
5691f15157cbc09cab0c8060fda383b10a5d08d4
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SHA256
7aa856f4de63761e009aab09314a53181fece93c83d683f34144cc5a5d3f5745
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SHA512
66cd14cdbeb7b112f7c976bae986c9cbe95bfc40a79233d6a6fe98bd2084ff43cdab9a3b0d02c2ad3b6ae0c24540c106e75f59805680c81a37858b0c34a8157b
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SSDEEP
3072:bN3/0c9VyUSG0jZ6Km+q9aYZBDn/wxCotkzHzvnOlo+lDLcRkchuJItSNVdWand:Bcc9kxjUlauIhoa4jpt
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\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/2168-0-0x00000000009C0000-0x0000000000A0C000-memory.dmp family_chaos behavioral1/files/0x000d00000001224d-4.dat family_chaos behavioral1/memory/2508-7-0x0000000000FA0000-0x0000000000FEC000-memory.dmp family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 3 IoCs
resource yara_rule behavioral1/memory/2168-0-0x00000000009C0000-0x0000000000A0C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/files/0x000d00000001224d-4.dat INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/2508-7-0x0000000000FA0000-0x0000000000FEC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2940 bcdedit.exe 2956 bcdedit.exe -
pid Process 2752 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 3 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 File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2508 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) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\PY5FLSJ8\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\Windows\Temporary Internet Files\Content.IE5\LGZQH3SP\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\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\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\CYTS71XD\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Favorites\Links for United States\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\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\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\Desktop\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\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\J3XTYXPF\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\History\History.IE5\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\AppData\Local\Microsoft\Windows\Temporary Internet Files\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\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\108YEMNS\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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\JYWEBS5E\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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 F:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Public\Documents\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\prglw9bsg.jpg" 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 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2632 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2136 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2508 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2168 2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe 2168 2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe 2508 svchost.exe 2508 svchost.exe 2508 svchost.exe 2508 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2168 2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe Token: SeDebugPrivilege 2508 svchost.exe Token: SeBackupPrivilege 2548 vssvc.exe Token: SeRestorePrivilege 2548 vssvc.exe Token: SeAuditPrivilege 2548 vssvc.exe Token: SeIncreaseQuotaPrivilege 3048 WMIC.exe Token: SeSecurityPrivilege 3048 WMIC.exe Token: SeTakeOwnershipPrivilege 3048 WMIC.exe Token: SeLoadDriverPrivilege 3048 WMIC.exe Token: SeSystemProfilePrivilege 3048 WMIC.exe Token: SeSystemtimePrivilege 3048 WMIC.exe Token: SeProfSingleProcessPrivilege 3048 WMIC.exe Token: SeIncBasePriorityPrivilege 3048 WMIC.exe Token: SeCreatePagefilePrivilege 3048 WMIC.exe Token: SeBackupPrivilege 3048 WMIC.exe Token: SeRestorePrivilege 3048 WMIC.exe Token: SeShutdownPrivilege 3048 WMIC.exe Token: SeDebugPrivilege 3048 WMIC.exe Token: SeSystemEnvironmentPrivilege 3048 WMIC.exe Token: SeRemoteShutdownPrivilege 3048 WMIC.exe Token: SeUndockPrivilege 3048 WMIC.exe Token: SeManageVolumePrivilege 3048 WMIC.exe Token: 33 3048 WMIC.exe Token: 34 3048 WMIC.exe Token: 35 3048 WMIC.exe Token: SeIncreaseQuotaPrivilege 3048 WMIC.exe Token: SeSecurityPrivilege 3048 WMIC.exe Token: SeTakeOwnershipPrivilege 3048 WMIC.exe Token: SeLoadDriverPrivilege 3048 WMIC.exe Token: SeSystemProfilePrivilege 3048 WMIC.exe Token: SeSystemtimePrivilege 3048 WMIC.exe Token: SeProfSingleProcessPrivilege 3048 WMIC.exe Token: SeIncBasePriorityPrivilege 3048 WMIC.exe Token: SeCreatePagefilePrivilege 3048 WMIC.exe Token: SeBackupPrivilege 3048 WMIC.exe Token: SeRestorePrivilege 3048 WMIC.exe Token: SeShutdownPrivilege 3048 WMIC.exe Token: SeDebugPrivilege 3048 WMIC.exe Token: SeSystemEnvironmentPrivilege 3048 WMIC.exe Token: SeRemoteShutdownPrivilege 3048 WMIC.exe Token: SeUndockPrivilege 3048 WMIC.exe Token: SeManageVolumePrivilege 3048 WMIC.exe Token: 33 3048 WMIC.exe Token: 34 3048 WMIC.exe Token: 35 3048 WMIC.exe Token: SeBackupPrivilege 1808 wbengine.exe Token: SeRestorePrivilege 1808 wbengine.exe Token: SeSecurityPrivilege 1808 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2168 wrote to memory of 2508 2168 2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe 28 PID 2168 wrote to memory of 2508 2168 2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe 28 PID 2168 wrote to memory of 2508 2168 2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe 28 PID 2508 wrote to memory of 2612 2508 svchost.exe 29 PID 2508 wrote to memory of 2612 2508 svchost.exe 29 PID 2508 wrote to memory of 2612 2508 svchost.exe 29 PID 2612 wrote to memory of 2632 2612 cmd.exe 31 PID 2612 wrote to memory of 2632 2612 cmd.exe 31 PID 2612 wrote to memory of 2632 2612 cmd.exe 31 PID 2612 wrote to memory of 3048 2612 cmd.exe 34 PID 2612 wrote to memory of 3048 2612 cmd.exe 34 PID 2612 wrote to memory of 3048 2612 cmd.exe 34 PID 2508 wrote to memory of 2840 2508 svchost.exe 36 PID 2508 wrote to memory of 2840 2508 svchost.exe 36 PID 2508 wrote to memory of 2840 2508 svchost.exe 36 PID 2840 wrote to memory of 2940 2840 cmd.exe 38 PID 2840 wrote to memory of 2940 2840 cmd.exe 38 PID 2840 wrote to memory of 2940 2840 cmd.exe 38 PID 2840 wrote to memory of 2956 2840 cmd.exe 39 PID 2840 wrote to memory of 2956 2840 cmd.exe 39 PID 2840 wrote to memory of 2956 2840 cmd.exe 39 PID 2508 wrote to memory of 2992 2508 svchost.exe 40 PID 2508 wrote to memory of 2992 2508 svchost.exe 40 PID 2508 wrote to memory of 2992 2508 svchost.exe 40 PID 2992 wrote to memory of 2752 2992 cmd.exe 42 PID 2992 wrote to memory of 2752 2992 cmd.exe 42 PID 2992 wrote to memory of 2752 2992 cmd.exe 42 PID 2508 wrote to memory of 2136 2508 svchost.exe 48 PID 2508 wrote to memory of 2136 2508 svchost.exe 48 PID 2508 wrote to memory of 2136 2508 svchost.exe 48 -
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\2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-23_fa2bc41c30b3a2941d80fc425fc2a77c_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2508 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2612 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2632
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3048
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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:2840 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2940
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2956
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2992 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2752
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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:2136
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2548
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1808
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2388
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2592
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD53c08014c9c865e808db93f81d9e99d42
SHA1c529887dc860f5f82868001e2736bc09291d0c9b
SHA256a3293c7c2918b1f33c63872f2322f2b057487739b68b5025ce8128986a06cfd1
SHA512af5bbb7c6e0efbe31838334397edced832df773859a5c273335973c3d0711d909f1717bfcbf981ae12f8f0b382db1671c28c600bad8cf38032b9e2895cdaf581
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
279KB
MD5fa2bc41c30b3a2941d80fc425fc2a77c
SHA15691f15157cbc09cab0c8060fda383b10a5d08d4
SHA2567aa856f4de63761e009aab09314a53181fece93c83d683f34144cc5a5d3f5745
SHA51266cd14cdbeb7b112f7c976bae986c9cbe95bfc40a79233d6a6fe98bd2084ff43cdab9a3b0d02c2ad3b6ae0c24540c106e75f59805680c81a37858b0c34a8157b