Analysis
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max time kernel
18s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
06-02-2024 02:46
Behavioral task
behavioral1
Sample
2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe
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Size
279KB
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MD5
b339405d60e7219f6d2313c712a43b98
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SHA1
448869cec847c2348093340691ffbc91c43f9924
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SHA256
893415f77589706593c2ce3cd6f388b0fe035e32cb39d4e1e1a81cea167386a0
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SHA512
13dfb12dc92d361c3513452887a375f8ba5a73b65611501ac27936cdf6446c4bb9a2e259bfa6b576fc13ba72d57c755762586ec18631329f879fedd5c41cd461
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SSDEEP
6144:Oc95/KFl0f3OZ9JWAsPb6CvVNbGRUly3RPdIg:j/KFl0f3OZ9kAsD6CdNbGRU43RPdI
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 4 IoCs
resource yara_rule behavioral1/memory/2152-0-0x0000000000FE0000-0x000000000102C000-memory.dmp family_chaos behavioral1/files/0x0009000000012280-5.dat family_chaos behavioral1/memory/1688-7-0x00000000000B0000-0x00000000000FC000-memory.dmp family_chaos behavioral1/files/0x0009000000012280-6.dat 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 4 IoCs
resource yara_rule behavioral1/memory/2152-0-0x0000000000FE0000-0x000000000102C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/files/0x0009000000012280-5.dat INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/1688-7-0x00000000000B0000-0x00000000000FC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/files/0x0009000000012280-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2916 bcdedit.exe 2904 bcdedit.exe -
Renames multiple (175) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 3040 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\Open.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 1688 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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Maintenance\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Videos\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Start Menu\Programs\Administrative Tools\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\Documents\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\Local\Microsoft\Feeds Cache\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\Favorites\Links\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\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\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\Public\Pictures\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\Start Menu\Programs\Maintenance\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\Local\Microsoft\Feeds Cache\SDT7AN2B\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\DX2PCHYL\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\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\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Accessibility\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\Content.IE5\3WHZRIFG\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\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\3NCQH63G\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\AWY2QCJS\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\Pictures\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\G1JUHYHS\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\G55KAURN\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\Desktop\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\Libraries\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\Windows\Temporary Internet Files\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\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\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 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2960 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2940 NOTEPAD.EXE -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2152 2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe 2152 2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe 1688 svchost.exe 1688 svchost.exe 1688 svchost.exe 1688 svchost.exe 1688 svchost.exe 1688 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2152 2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe Token: SeDebugPrivilege 1688 svchost.exe Token: SeBackupPrivilege 2752 vssvc.exe Token: SeRestorePrivilege 2752 vssvc.exe Token: SeAuditPrivilege 2752 vssvc.exe Token: SeIncreaseQuotaPrivilege 2376 WMIC.exe Token: SeSecurityPrivilege 2376 WMIC.exe Token: SeTakeOwnershipPrivilege 2376 WMIC.exe Token: SeLoadDriverPrivilege 2376 WMIC.exe Token: SeSystemProfilePrivilege 2376 WMIC.exe Token: SeSystemtimePrivilege 2376 WMIC.exe Token: SeProfSingleProcessPrivilege 2376 WMIC.exe Token: SeIncBasePriorityPrivilege 2376 WMIC.exe Token: SeCreatePagefilePrivilege 2376 WMIC.exe Token: SeBackupPrivilege 2376 WMIC.exe Token: SeRestorePrivilege 2376 WMIC.exe Token: SeShutdownPrivilege 2376 WMIC.exe Token: SeDebugPrivilege 2376 WMIC.exe Token: SeSystemEnvironmentPrivilege 2376 WMIC.exe Token: SeRemoteShutdownPrivilege 2376 WMIC.exe Token: SeUndockPrivilege 2376 WMIC.exe Token: SeManageVolumePrivilege 2376 WMIC.exe Token: 33 2376 WMIC.exe Token: 34 2376 WMIC.exe Token: 35 2376 WMIC.exe Token: SeIncreaseQuotaPrivilege 2376 WMIC.exe Token: SeSecurityPrivilege 2376 WMIC.exe Token: SeTakeOwnershipPrivilege 2376 WMIC.exe Token: SeLoadDriverPrivilege 2376 WMIC.exe Token: SeSystemProfilePrivilege 2376 WMIC.exe Token: SeSystemtimePrivilege 2376 WMIC.exe Token: SeProfSingleProcessPrivilege 2376 WMIC.exe Token: SeIncBasePriorityPrivilege 2376 WMIC.exe Token: SeCreatePagefilePrivilege 2376 WMIC.exe Token: SeBackupPrivilege 2376 WMIC.exe Token: SeRestorePrivilege 2376 WMIC.exe Token: SeShutdownPrivilege 2376 WMIC.exe Token: SeDebugPrivilege 2376 WMIC.exe Token: SeSystemEnvironmentPrivilege 2376 WMIC.exe Token: SeRemoteShutdownPrivilege 2376 WMIC.exe Token: SeUndockPrivilege 2376 WMIC.exe Token: SeManageVolumePrivilege 2376 WMIC.exe Token: 33 2376 WMIC.exe Token: 34 2376 WMIC.exe Token: 35 2376 WMIC.exe Token: SeBackupPrivilege 2036 wbengine.exe Token: SeRestorePrivilege 2036 wbengine.exe Token: SeSecurityPrivilege 2036 wbengine.exe -
Suspicious use of WriteProcessMemory 27 IoCs
description pid Process procid_target PID 2152 wrote to memory of 1688 2152 2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe 30 PID 2152 wrote to memory of 1688 2152 2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe 30 PID 2152 wrote to memory of 1688 2152 2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe 30 PID 1688 wrote to memory of 2972 1688 svchost.exe 28 PID 1688 wrote to memory of 2972 1688 svchost.exe 28 PID 1688 wrote to memory of 2972 1688 svchost.exe 28 PID 2972 wrote to memory of 2960 2972 cmd.exe 31 PID 2972 wrote to memory of 2960 2972 cmd.exe 31 PID 2972 wrote to memory of 2960 2972 cmd.exe 31 PID 2972 wrote to memory of 2376 2972 cmd.exe 34 PID 2972 wrote to memory of 2376 2972 cmd.exe 34 PID 2972 wrote to memory of 2376 2972 cmd.exe 34 PID 1688 wrote to memory of 2900 1688 svchost.exe 42 PID 1688 wrote to memory of 2900 1688 svchost.exe 42 PID 1688 wrote to memory of 2900 1688 svchost.exe 42 PID 2900 wrote to memory of 2904 2900 cmd.exe 41 PID 2900 wrote to memory of 2904 2900 cmd.exe 41 PID 2900 wrote to memory of 2904 2900 cmd.exe 41 PID 2900 wrote to memory of 2916 2900 cmd.exe 40 PID 2900 wrote to memory of 2916 2900 cmd.exe 40 PID 2900 wrote to memory of 2916 2900 cmd.exe 40 PID 1688 wrote to memory of 2924 1688 svchost.exe 38 PID 1688 wrote to memory of 2924 1688 svchost.exe 38 PID 1688 wrote to memory of 2924 1688 svchost.exe 38 PID 2924 wrote to memory of 3040 2924 cmd.exe 39 PID 2924 wrote to memory of 3040 2924 cmd.exe 39 PID 2924 wrote to memory of 3040 2924 cmd.exe 39 -
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\2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-06_b339405d60e7219f6d2313c712a43b98_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2152 -
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)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1688 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2924 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3040
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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:2900
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Open.txt3⤵
- Opens file in notepad (likely ransom note)
PID:2940
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete1⤵
- Suspicious use of WriteProcessMemory
PID:2972 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:2960
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2376
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2752
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no1⤵
- Modifies boot configuration data using bcdedit
PID:2916
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures1⤵
- Modifies boot configuration data using bcdedit
PID:2904
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2036
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2232
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2508
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5a4e0df828e30dcdbffb01710a73949fb
SHA16db94686c50fde57e7c5cf188034883b95006770
SHA25656ce87b571f67cd9e21e4c0045a4b4bb2889dac8c05a5fed6f38f1fe3fcc12dc
SHA512b410941f284b4e2fde82a19edf3ca3dbd3ec5965c1cf7952bdacc6b5492a4913ea6eb257c7cbfbf6a7a9bee49b94204299fb0a350f6c6ef8ad5ea2025149c82c
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
154KB
MD5ee5eea609ea8c28ba06ceddf6aa54e81
SHA15bb892576745266e9a20128a7f5492e10501576f
SHA256fdd89ab74613941869b602197464944c0d294cfe611b56cae8dba6952cbe630d
SHA5124ab8e56c6fd65d3234db80384937bfb2bade63fcc33a1c3c63590df4e777f125070b506ea484aac4ff78ebe5ba2529e724d0d76c909bd25a8d87a52c1d7de715
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Filesize
231KB
MD53bc962f449d5a8dc67f322e6ff6aa99b
SHA1a38f7472892dbbfcd95f463ac1aac9f5c18ec446
SHA2564d665cbc7d64e542d35954bf2b379e5bf193d78d933f05ea7827988cfce93f56
SHA5128df22a77690c9b391bf192efe59e2fbe558c033d81f6e10f9f428cece204f11ae9b20e642c6f9deeed91d43599b70f8b44229e7d1fa03d955b52c7679c9bf672