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Analysis
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max time kernel
118s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
30/06/2024, 11:43
Behavioral task
behavioral1
Sample
2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe
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Size
4.3MB
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MD5
9419d434db629f523344716672cd4187
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SHA1
3cdab65847e493d1bed982debbd9497561c4a3c0
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SHA256
390db2712380d32479d8f0b61397e9cfba7eb084677cd46fc1e72555f5166420
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SHA512
f12e761105a5c38d5916bad504713c6f1c87a3ca8f0654d9e920e28eb0b2f7d26c23cd90ebdc79660fcad0267b42d6f21ee0d39090da3956c364a5ce786395e3
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SSDEEP
49152:9bV9T1iQXYMP39qD3nB9kbIImcF7vTZJnP:
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_mt.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/2644-1-0x0000000000840000-0x0000000000C8A000-memory.dmp family_chaos behavioral1/files/0x000500000000b309-5.dat family_chaos behavioral1/memory/1896-7-0x0000000000FE0000-0x000000000142A000-memory.dmp family_chaos -
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 2080 bcdedit.exe 1828 bcdedit.exe -
Renames multiple (168) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 1632 wbadmin.exe -
Disables Task Manager via registry modification
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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\read_mt.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1896 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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\YB3GTTZL\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\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\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\Startup\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\J5F35Y14\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\Programs\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Windows\Temporary Internet Files\Content.IE5\Y0ZJQLW6\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\Favorites\Links for United States\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\2P2F3L3Q\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\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\Desktop\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\Recorded TV\Sample Media\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 F:\$RECYCLE.BIN\S-1-5-21-2812790648-3157963462-487717889-1000\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\Temporary Internet Files\Content.IE5\3RE14TN8\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\Downloads\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\Public\Music\Sample Music\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\Admin\Links\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\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\Admin\AppData\Local\Microsoft\Feeds Cache\DCO0772Q\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\Contacts\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\Internet Explorer\Quick Launch\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\\wo1x5xrqr.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 2664 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 772 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1896 svchost.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2644 2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe 2644 2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe 1896 svchost.exe 1896 svchost.exe 1896 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2644 2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe Token: SeDebugPrivilege 1896 svchost.exe Token: SeBackupPrivilege 2784 vssvc.exe Token: SeRestorePrivilege 2784 vssvc.exe Token: SeAuditPrivilege 2784 vssvc.exe Token: SeIncreaseQuotaPrivilege 2592 WMIC.exe Token: SeSecurityPrivilege 2592 WMIC.exe Token: SeTakeOwnershipPrivilege 2592 WMIC.exe Token: SeLoadDriverPrivilege 2592 WMIC.exe Token: SeSystemProfilePrivilege 2592 WMIC.exe Token: SeSystemtimePrivilege 2592 WMIC.exe Token: SeProfSingleProcessPrivilege 2592 WMIC.exe Token: SeIncBasePriorityPrivilege 2592 WMIC.exe Token: SeCreatePagefilePrivilege 2592 WMIC.exe Token: SeBackupPrivilege 2592 WMIC.exe Token: SeRestorePrivilege 2592 WMIC.exe Token: SeShutdownPrivilege 2592 WMIC.exe Token: SeDebugPrivilege 2592 WMIC.exe Token: SeSystemEnvironmentPrivilege 2592 WMIC.exe Token: SeRemoteShutdownPrivilege 2592 WMIC.exe Token: SeUndockPrivilege 2592 WMIC.exe Token: SeManageVolumePrivilege 2592 WMIC.exe Token: 33 2592 WMIC.exe Token: 34 2592 WMIC.exe Token: 35 2592 WMIC.exe Token: SeIncreaseQuotaPrivilege 2592 WMIC.exe Token: SeSecurityPrivilege 2592 WMIC.exe Token: SeTakeOwnershipPrivilege 2592 WMIC.exe Token: SeLoadDriverPrivilege 2592 WMIC.exe Token: SeSystemProfilePrivilege 2592 WMIC.exe Token: SeSystemtimePrivilege 2592 WMIC.exe Token: SeProfSingleProcessPrivilege 2592 WMIC.exe Token: SeIncBasePriorityPrivilege 2592 WMIC.exe Token: SeCreatePagefilePrivilege 2592 WMIC.exe Token: SeBackupPrivilege 2592 WMIC.exe Token: SeRestorePrivilege 2592 WMIC.exe Token: SeShutdownPrivilege 2592 WMIC.exe Token: SeDebugPrivilege 2592 WMIC.exe Token: SeSystemEnvironmentPrivilege 2592 WMIC.exe Token: SeRemoteShutdownPrivilege 2592 WMIC.exe Token: SeUndockPrivilege 2592 WMIC.exe Token: SeManageVolumePrivilege 2592 WMIC.exe Token: 33 2592 WMIC.exe Token: 34 2592 WMIC.exe Token: 35 2592 WMIC.exe Token: SeBackupPrivilege 2964 wbengine.exe Token: SeRestorePrivilege 2964 wbengine.exe Token: SeSecurityPrivilege 2964 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2644 wrote to memory of 1896 2644 2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe 28 PID 2644 wrote to memory of 1896 2644 2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe 28 PID 2644 wrote to memory of 1896 2644 2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe 28 PID 1896 wrote to memory of 3056 1896 svchost.exe 29 PID 1896 wrote to memory of 3056 1896 svchost.exe 29 PID 1896 wrote to memory of 3056 1896 svchost.exe 29 PID 3056 wrote to memory of 2664 3056 cmd.exe 31 PID 3056 wrote to memory of 2664 3056 cmd.exe 31 PID 3056 wrote to memory of 2664 3056 cmd.exe 31 PID 3056 wrote to memory of 2592 3056 cmd.exe 34 PID 3056 wrote to memory of 2592 3056 cmd.exe 34 PID 3056 wrote to memory of 2592 3056 cmd.exe 34 PID 1896 wrote to memory of 1912 1896 svchost.exe 36 PID 1896 wrote to memory of 1912 1896 svchost.exe 36 PID 1896 wrote to memory of 1912 1896 svchost.exe 36 PID 1912 wrote to memory of 2080 1912 cmd.exe 38 PID 1912 wrote to memory of 2080 1912 cmd.exe 38 PID 1912 wrote to memory of 2080 1912 cmd.exe 38 PID 1912 wrote to memory of 1828 1912 cmd.exe 39 PID 1912 wrote to memory of 1828 1912 cmd.exe 39 PID 1912 wrote to memory of 1828 1912 cmd.exe 39 PID 1896 wrote to memory of 1524 1896 svchost.exe 40 PID 1896 wrote to memory of 1524 1896 svchost.exe 40 PID 1896 wrote to memory of 1524 1896 svchost.exe 40 PID 1524 wrote to memory of 1632 1524 cmd.exe 42 PID 1524 wrote to memory of 1632 1524 cmd.exe 42 PID 1524 wrote to memory of 1632 1524 cmd.exe 42 PID 1896 wrote to memory of 772 1896 svchost.exe 48 PID 1896 wrote to memory of 772 1896 svchost.exe 48 PID 1896 wrote to memory of 772 1896 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\2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-30_9419d434db629f523344716672cd4187_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2644 -
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:1896 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3056 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2664
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2592
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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:1912 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2080
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1828
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1524 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1632
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_mt.txt3⤵
- Opens file in notepad (likely ransom note)
PID:772
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2784
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2964
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2980
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2132
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
825B
MD5d1a40c1a9e994460cc528cc5f0724055
SHA13ed510dabc7e8eb32f8cbf4849c11e4aa9c27652
SHA256122cf2d3b1c660f96f1ab855dca9646239c75558930ab6656ff5083d66009d91
SHA51297bf83c61d9a228058d7936a007c4e8503b4a390655551b5709025b45ad18434c6a18916bef605f85cef48736f3fff762d250f5ae6fb5e03bd6d49865417f2c8
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
4.3MB
MD59419d434db629f523344716672cd4187
SHA13cdab65847e493d1bed982debbd9497561c4a3c0
SHA256390db2712380d32479d8f0b61397e9cfba7eb084677cd46fc1e72555f5166420
SHA512f12e761105a5c38d5916bad504713c6f1c87a3ca8f0654d9e920e28eb0b2f7d26c23cd90ebdc79660fcad0267b42d6f21ee0d39090da3956c364a5ce786395e3