Analysis
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max time kernel
359s -
max time network
359s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
18/06/2024, 12:59
Static task
static1
Behavioral task
behavioral1
Sample
4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe
Resource
win10v2004-20240226-en
General
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Target
4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe
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Size
700KB
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MD5
4f6dd08aeb0beca7061a2121e2f89f32
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SHA1
370de5096d1b9e9ccc2e18e6145dc8170e454d2e
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SHA256
4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176
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SHA512
47a73721cdab4f15ef65172bd110f82cc9e887e2d1f333e09b11ddf1213215bcc6f8c04144a8bc7ead53f66572812f5017157dc783df275680ce45a793949c1f
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SSDEEP
6144:Er+LuDj/chQaT1ptXl7ml2JcT0RQTPA7b/OQi5J:6+iDjkhQ8NRJcToQTui
Malware Config
Extracted
C:\Users\Admin\AppData\Local\instruction.txt
Signatures
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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 2256 bcdedit.exe 2264 bcdedit.exe -
Renames multiple (167) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 1312 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\instruction.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2680 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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\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\Y0ZJQLW6\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\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Temporary Internet Files\Content.IE5\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\Favorites\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\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\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\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\Feeds Cache\J5F35Y14\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\Pictures\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\DCO0772Q\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 F:\$RECYCLE.BIN\S-1-5-21-2812790648-3157963462-487717889-1000\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\OKTCIO2K\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\Public\Videos\Sample Videos\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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\AKYHOTOC\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\Pictures\Sample Pictures\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\Feeds Cache\2P2F3L3Q\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\3RE14TN8\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\Videos\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\Programs\Accessories\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\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\Internet Explorer\Quick Launch\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\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\Public\Libraries\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\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\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\qmlqso9s7.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 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2688 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 600 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2412 4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe 2680 svchost.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2412 4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe 2412 4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe 2680 svchost.exe 2680 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2412 4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe Token: SeDebugPrivilege 2680 svchost.exe Token: SeBackupPrivilege 2932 vssvc.exe Token: SeRestorePrivilege 2932 vssvc.exe Token: SeAuditPrivilege 2932 vssvc.exe Token: SeIncreaseQuotaPrivilege 1968 WMIC.exe Token: SeSecurityPrivilege 1968 WMIC.exe Token: SeTakeOwnershipPrivilege 1968 WMIC.exe Token: SeLoadDriverPrivilege 1968 WMIC.exe Token: SeSystemProfilePrivilege 1968 WMIC.exe Token: SeSystemtimePrivilege 1968 WMIC.exe Token: SeProfSingleProcessPrivilege 1968 WMIC.exe Token: SeIncBasePriorityPrivilege 1968 WMIC.exe Token: SeCreatePagefilePrivilege 1968 WMIC.exe Token: SeBackupPrivilege 1968 WMIC.exe Token: SeRestorePrivilege 1968 WMIC.exe Token: SeShutdownPrivilege 1968 WMIC.exe Token: SeDebugPrivilege 1968 WMIC.exe Token: SeSystemEnvironmentPrivilege 1968 WMIC.exe Token: SeRemoteShutdownPrivilege 1968 WMIC.exe Token: SeUndockPrivilege 1968 WMIC.exe Token: SeManageVolumePrivilege 1968 WMIC.exe Token: 33 1968 WMIC.exe Token: 34 1968 WMIC.exe Token: 35 1968 WMIC.exe Token: SeIncreaseQuotaPrivilege 1968 WMIC.exe Token: SeSecurityPrivilege 1968 WMIC.exe Token: SeTakeOwnershipPrivilege 1968 WMIC.exe Token: SeLoadDriverPrivilege 1968 WMIC.exe Token: SeSystemProfilePrivilege 1968 WMIC.exe Token: SeSystemtimePrivilege 1968 WMIC.exe Token: SeProfSingleProcessPrivilege 1968 WMIC.exe Token: SeIncBasePriorityPrivilege 1968 WMIC.exe Token: SeCreatePagefilePrivilege 1968 WMIC.exe Token: SeBackupPrivilege 1968 WMIC.exe Token: SeRestorePrivilege 1968 WMIC.exe Token: SeShutdownPrivilege 1968 WMIC.exe Token: SeDebugPrivilege 1968 WMIC.exe Token: SeSystemEnvironmentPrivilege 1968 WMIC.exe Token: SeRemoteShutdownPrivilege 1968 WMIC.exe Token: SeUndockPrivilege 1968 WMIC.exe Token: SeManageVolumePrivilege 1968 WMIC.exe Token: 33 1968 WMIC.exe Token: 34 1968 WMIC.exe Token: 35 1968 WMIC.exe Token: SeBackupPrivilege 2820 wbengine.exe Token: SeRestorePrivilege 2820 wbengine.exe Token: SeSecurityPrivilege 2820 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2412 wrote to memory of 2680 2412 4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe 28 PID 2412 wrote to memory of 2680 2412 4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe 28 PID 2412 wrote to memory of 2680 2412 4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe 28 PID 2680 wrote to memory of 2880 2680 svchost.exe 29 PID 2680 wrote to memory of 2880 2680 svchost.exe 29 PID 2680 wrote to memory of 2880 2680 svchost.exe 29 PID 2880 wrote to memory of 2688 2880 cmd.exe 31 PID 2880 wrote to memory of 2688 2880 cmd.exe 31 PID 2880 wrote to memory of 2688 2880 cmd.exe 31 PID 2880 wrote to memory of 1968 2880 cmd.exe 34 PID 2880 wrote to memory of 1968 2880 cmd.exe 34 PID 2880 wrote to memory of 1968 2880 cmd.exe 34 PID 2680 wrote to memory of 2312 2680 svchost.exe 36 PID 2680 wrote to memory of 2312 2680 svchost.exe 36 PID 2680 wrote to memory of 2312 2680 svchost.exe 36 PID 2312 wrote to memory of 2256 2312 cmd.exe 38 PID 2312 wrote to memory of 2256 2312 cmd.exe 38 PID 2312 wrote to memory of 2256 2312 cmd.exe 38 PID 2312 wrote to memory of 2264 2312 cmd.exe 39 PID 2312 wrote to memory of 2264 2312 cmd.exe 39 PID 2312 wrote to memory of 2264 2312 cmd.exe 39 PID 2680 wrote to memory of 2524 2680 svchost.exe 40 PID 2680 wrote to memory of 2524 2680 svchost.exe 40 PID 2680 wrote to memory of 2524 2680 svchost.exe 40 PID 2524 wrote to memory of 1312 2524 cmd.exe 42 PID 2524 wrote to memory of 1312 2524 cmd.exe 42 PID 2524 wrote to memory of 1312 2524 cmd.exe 42 PID 2680 wrote to memory of 600 2680 svchost.exe 48 PID 2680 wrote to memory of 600 2680 svchost.exe 48 PID 2680 wrote to memory of 600 2680 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\4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe"C:\Users\Admin\AppData\Local\Temp\4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2412 -
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)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2680 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2880 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2688
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1968
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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:2312 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2256
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2264
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2524 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1312
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\instruction.txt3⤵
- Opens file in notepad (likely ransom note)
PID:600
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2932
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2820
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2916
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2016
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5f13ded4fcd58941a41ae202bdb335caa
SHA1f49bf43765d44ab7925a26e79df4b854c46404c0
SHA256a8ee4ee9f1144077af252f2cfec7cdb048d00988402fb0a1c35629a9a52b8980
SHA512cbb1bd405890509651035ba924cdc8ff0c17420e35cae23760ad6ed4e201d64c1bfa8360d0312dfa948a81a4ac7f43aa779d1f78d6e5d2e4c7c3850447a0b09d
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Filesize
700KB
MD54f6dd08aeb0beca7061a2121e2f89f32
SHA1370de5096d1b9e9ccc2e18e6145dc8170e454d2e
SHA2564c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176
SHA51247a73721cdab4f15ef65172bd110f82cc9e887e2d1f333e09b11ddf1213215bcc6f8c04144a8bc7ead53f66572812f5017157dc783df275680ce45a793949c1f
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0