Analysis
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max time kernel
20s -
max time network
18s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
02-02-2025 04:56
Behavioral task
behavioral1
Sample
2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe
Resource
win10v2004-20250129-en
General
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Target
2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe
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Size
26KB
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MD5
d7e806ec2b0a3ac59cbfde830cfa5cec
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SHA1
dbb0554a1f7b99fbe2d7754a5fa5cc8167ea9b63
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SHA256
f0dc37bda70caa023d17f3858612d5fa922aeb27b3f151ea5ebcf83045fa52b2
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SHA512
bcdbf01c63b056ccfa9ca8596df339640e088f5c9e3c6ed85ed576e6fec57807dbce38c7d290767edd230bc86b1c85471da877abb3ad9d1313d159acdf7ee414
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SSDEEP
384:3YenjLLAI0bFiN5EP5cIvOVp91mNKJ+b5NxDGK:+I0bFi+c9wNw+bXxDV
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt
chaos
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/2540-1-0x0000000000E40000-0x0000000000E4C000-memory.dmp family_chaos behavioral1/files/0x000b000000012263-5.dat family_chaos behavioral1/memory/2568-7-0x0000000000070000-0x000000000007C000-memory.dmp family_chaos -
Chaos family
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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 1348 bcdedit.exe 2616 bcdedit.exe -
pid Process 2936 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_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2568 svchost.exe -
Reads user/profile data of web browsers 3 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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\ADWO43R6\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4TDQSVWU\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\Accessories\Accessibility\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\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\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\Pictures\Sample Pictures\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\Favorites\Links\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\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\Public\Downloads\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\System Tools\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\SEGJVAZC\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\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\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\4KNYJNXZ\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Maintenance\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\Windows\History\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\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\Admin\AppData\Roaming\Microsoft\Windows\Recent\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\All Users\Microsoft\Windows\Start Menu\Programs\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\Temporary Internet Files\Content.IE5\BBWU148F\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3692679935-4019334568-335155002-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\5O2ZS8DL\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\Saved Games\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\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\G0UQMQ1C\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\All Users\Microsoft\Windows\Start Menu\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 -
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 2356 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1700 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2568 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2540 2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe 2540 2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe 2540 2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe 2568 svchost.exe 2568 svchost.exe 2568 svchost.exe 2568 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2540 2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2568 svchost.exe Token: SeBackupPrivilege 2868 vssvc.exe Token: SeRestorePrivilege 2868 vssvc.exe Token: SeAuditPrivilege 2868 vssvc.exe Token: SeIncreaseQuotaPrivilege 2636 WMIC.exe Token: SeSecurityPrivilege 2636 WMIC.exe Token: SeTakeOwnershipPrivilege 2636 WMIC.exe Token: SeLoadDriverPrivilege 2636 WMIC.exe Token: SeSystemProfilePrivilege 2636 WMIC.exe Token: SeSystemtimePrivilege 2636 WMIC.exe Token: SeProfSingleProcessPrivilege 2636 WMIC.exe Token: SeIncBasePriorityPrivilege 2636 WMIC.exe Token: SeCreatePagefilePrivilege 2636 WMIC.exe Token: SeBackupPrivilege 2636 WMIC.exe Token: SeRestorePrivilege 2636 WMIC.exe Token: SeShutdownPrivilege 2636 WMIC.exe Token: SeDebugPrivilege 2636 WMIC.exe Token: SeSystemEnvironmentPrivilege 2636 WMIC.exe Token: SeRemoteShutdownPrivilege 2636 WMIC.exe Token: SeUndockPrivilege 2636 WMIC.exe Token: SeManageVolumePrivilege 2636 WMIC.exe Token: 33 2636 WMIC.exe Token: 34 2636 WMIC.exe Token: 35 2636 WMIC.exe Token: SeIncreaseQuotaPrivilege 2636 WMIC.exe Token: SeSecurityPrivilege 2636 WMIC.exe Token: SeTakeOwnershipPrivilege 2636 WMIC.exe Token: SeLoadDriverPrivilege 2636 WMIC.exe Token: SeSystemProfilePrivilege 2636 WMIC.exe Token: SeSystemtimePrivilege 2636 WMIC.exe Token: SeProfSingleProcessPrivilege 2636 WMIC.exe Token: SeIncBasePriorityPrivilege 2636 WMIC.exe Token: SeCreatePagefilePrivilege 2636 WMIC.exe Token: SeBackupPrivilege 2636 WMIC.exe Token: SeRestorePrivilege 2636 WMIC.exe Token: SeShutdownPrivilege 2636 WMIC.exe Token: SeDebugPrivilege 2636 WMIC.exe Token: SeSystemEnvironmentPrivilege 2636 WMIC.exe Token: SeRemoteShutdownPrivilege 2636 WMIC.exe Token: SeUndockPrivilege 2636 WMIC.exe Token: SeManageVolumePrivilege 2636 WMIC.exe Token: 33 2636 WMIC.exe Token: 34 2636 WMIC.exe Token: 35 2636 WMIC.exe Token: SeBackupPrivilege 2972 wbengine.exe Token: SeRestorePrivilege 2972 wbengine.exe Token: SeSecurityPrivilege 2972 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2540 wrote to memory of 2568 2540 2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe 29 PID 2540 wrote to memory of 2568 2540 2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe 29 PID 2540 wrote to memory of 2568 2540 2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe 29 PID 2568 wrote to memory of 3012 2568 svchost.exe 30 PID 2568 wrote to memory of 3012 2568 svchost.exe 30 PID 2568 wrote to memory of 3012 2568 svchost.exe 30 PID 3012 wrote to memory of 2356 3012 cmd.exe 32 PID 3012 wrote to memory of 2356 3012 cmd.exe 32 PID 3012 wrote to memory of 2356 3012 cmd.exe 32 PID 3012 wrote to memory of 2636 3012 cmd.exe 35 PID 3012 wrote to memory of 2636 3012 cmd.exe 35 PID 3012 wrote to memory of 2636 3012 cmd.exe 35 PID 2568 wrote to memory of 2912 2568 svchost.exe 37 PID 2568 wrote to memory of 2912 2568 svchost.exe 37 PID 2568 wrote to memory of 2912 2568 svchost.exe 37 PID 2912 wrote to memory of 1348 2912 cmd.exe 39 PID 2912 wrote to memory of 1348 2912 cmd.exe 39 PID 2912 wrote to memory of 1348 2912 cmd.exe 39 PID 2912 wrote to memory of 2616 2912 cmd.exe 40 PID 2912 wrote to memory of 2616 2912 cmd.exe 40 PID 2912 wrote to memory of 2616 2912 cmd.exe 40 PID 2568 wrote to memory of 1864 2568 svchost.exe 41 PID 2568 wrote to memory of 1864 2568 svchost.exe 41 PID 2568 wrote to memory of 1864 2568 svchost.exe 41 PID 1864 wrote to memory of 2936 1864 cmd.exe 43 PID 1864 wrote to memory of 2936 1864 cmd.exe 43 PID 1864 wrote to memory of 2936 1864 cmd.exe 43 PID 2568 wrote to memory of 1700 2568 svchost.exe 48 PID 2568 wrote to memory of 1700 2568 svchost.exe 48 PID 2568 wrote to memory of 1700 2568 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\2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-02-02_d7e806ec2b0a3ac59cbfde830cfa5cec_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2540 -
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: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2568 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3012 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2356
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2636
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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:2912 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1348
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2616
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1864 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2936
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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:1700
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2868
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2972
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1152
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:316
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
962B
MD51a31305937bebce0ccfb0e6142831452
SHA174d6e8aed55286c66b2dd15cf16c5ee53056b1c9
SHA25662d5d9737197180da1404755041db64f82667b9bb4ae6ff6619b252ab5cb1695
SHA51267d2155954a133e395084a5fe38adbe923a99603ffffcf1981c942f4f87d1b914808a210c33c10e59eef06873d73de62e2ccaabccd88a8e1055e90a6985be3c5
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
26KB
MD5d7e806ec2b0a3ac59cbfde830cfa5cec
SHA1dbb0554a1f7b99fbe2d7754a5fa5cc8167ea9b63
SHA256f0dc37bda70caa023d17f3858612d5fa922aeb27b3f151ea5ebcf83045fa52b2
SHA512bcdbf01c63b056ccfa9ca8596df339640e088f5c9e3c6ed85ed576e6fec57807dbce38c7d290767edd230bc86b1c85471da877abb3ad9d1313d159acdf7ee414