Resubmissions
06-08-2024 18:54
240806-xkfalsxckp 1006-08-2024 15:17
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240806-b88feazcka 10Analysis
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max time kernel
1790s -
max time network
1561s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
06-08-2024 15:16
Static task
static1
Behavioral task
behavioral1
Sample
WannaCry.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
WannaCry.exe
Resource
win10v2004-20240802-en
General
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Target
WannaCry.exe
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Size
224KB
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MD5
5c7fb0927db37372da25f270708103a2
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SHA1
120ed9279d85cbfa56e5b7779ffa7162074f7a29
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SHA256
be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844
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SHA512
a15f97fad744ccf5f620e5aabb81f48507327b898a9aa4287051464019e0f89224c484e9691812e166471af9beaddcfc3deb2ba878658761f4800663beef7206
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SSDEEP
3072:Y059femWRwTs/dbelj0X8/j84pcRXPlU3Upt3or4H84lK8PtpLzLsR/EfcZ:+5RwTs/dSXj84mRXPemxdBlPvLzLeZ
Malware Config
Extracted
C:\Users\Admin\Documents\!Please Read Me!.txt
wannacry
15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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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\~SD81A8.tmp WannaCry.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD81CC.tmp WannaCry.exe -
Executes dropped EXE 4 IoCs
pid Process 2648 !WannaDecryptor!.exe 1352 !WannaDecryptor!.exe 1044 !WannaDecryptor!.exe 2556 !WannaDecryptor!.exe -
Loads dropped DLL 9 IoCs
pid Process 2868 cscript.exe 1824 WannaCry.exe 1824 WannaCry.exe 1824 WannaCry.exe 1824 WannaCry.exe 1508 cmd.exe 1508 cmd.exe 1824 WannaCry.exe 1824 WannaCry.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Update Task Scheduler = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WannaCry.exe\" /r" WannaCry.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\!WannaCryptor!.bmp" !WannaDecryptor!.exe Set value (str) \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg" !WannaDecryptor!.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 15 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WannaCry.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WMIC.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cscript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vssadmin.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2464 vssadmin.exe -
Kills process with taskkill 4 IoCs
pid Process 2344 taskkill.exe 2160 taskkill.exe 2272 taskkill.exe 1044 taskkill.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2556 !WannaDecryptor!.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeDebugPrivilege 1044 taskkill.exe Token: SeDebugPrivilege 2272 taskkill.exe Token: SeDebugPrivilege 2344 taskkill.exe Token: SeDebugPrivilege 2160 taskkill.exe Token: SeBackupPrivilege 2944 vssvc.exe Token: SeRestorePrivilege 2944 vssvc.exe Token: SeAuditPrivilege 2944 vssvc.exe Token: SeIncreaseQuotaPrivilege 2832 WMIC.exe Token: SeSecurityPrivilege 2832 WMIC.exe Token: SeTakeOwnershipPrivilege 2832 WMIC.exe Token: SeLoadDriverPrivilege 2832 WMIC.exe Token: SeSystemProfilePrivilege 2832 WMIC.exe Token: SeSystemtimePrivilege 2832 WMIC.exe Token: SeProfSingleProcessPrivilege 2832 WMIC.exe Token: SeIncBasePriorityPrivilege 2832 WMIC.exe Token: SeCreatePagefilePrivilege 2832 WMIC.exe Token: SeBackupPrivilege 2832 WMIC.exe Token: SeRestorePrivilege 2832 WMIC.exe Token: SeShutdownPrivilege 2832 WMIC.exe Token: SeDebugPrivilege 2832 WMIC.exe Token: SeSystemEnvironmentPrivilege 2832 WMIC.exe Token: SeRemoteShutdownPrivilege 2832 WMIC.exe Token: SeUndockPrivilege 2832 WMIC.exe Token: SeManageVolumePrivilege 2832 WMIC.exe Token: 33 2832 WMIC.exe Token: 34 2832 WMIC.exe Token: 35 2832 WMIC.exe Token: SeIncreaseQuotaPrivilege 2832 WMIC.exe Token: SeSecurityPrivilege 2832 WMIC.exe Token: SeTakeOwnershipPrivilege 2832 WMIC.exe Token: SeLoadDriverPrivilege 2832 WMIC.exe Token: SeSystemProfilePrivilege 2832 WMIC.exe Token: SeSystemtimePrivilege 2832 WMIC.exe Token: SeProfSingleProcessPrivilege 2832 WMIC.exe Token: SeIncBasePriorityPrivilege 2832 WMIC.exe Token: SeCreatePagefilePrivilege 2832 WMIC.exe Token: SeBackupPrivilege 2832 WMIC.exe Token: SeRestorePrivilege 2832 WMIC.exe Token: SeShutdownPrivilege 2832 WMIC.exe Token: SeDebugPrivilege 2832 WMIC.exe Token: SeSystemEnvironmentPrivilege 2832 WMIC.exe Token: SeRemoteShutdownPrivilege 2832 WMIC.exe Token: SeUndockPrivilege 2832 WMIC.exe Token: SeManageVolumePrivilege 2832 WMIC.exe Token: 33 2832 WMIC.exe Token: 34 2832 WMIC.exe Token: 35 2832 WMIC.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 2648 !WannaDecryptor!.exe 2648 !WannaDecryptor!.exe 1352 !WannaDecryptor!.exe 1352 !WannaDecryptor!.exe 1044 !WannaDecryptor!.exe 1044 !WannaDecryptor!.exe 2556 !WannaDecryptor!.exe 2556 !WannaDecryptor!.exe -
Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 1824 wrote to memory of 2836 1824 WannaCry.exe 30 PID 1824 wrote to memory of 2836 1824 WannaCry.exe 30 PID 1824 wrote to memory of 2836 1824 WannaCry.exe 30 PID 1824 wrote to memory of 2836 1824 WannaCry.exe 30 PID 2836 wrote to memory of 2868 2836 cmd.exe 32 PID 2836 wrote to memory of 2868 2836 cmd.exe 32 PID 2836 wrote to memory of 2868 2836 cmd.exe 32 PID 2836 wrote to memory of 2868 2836 cmd.exe 32 PID 1824 wrote to memory of 2648 1824 WannaCry.exe 33 PID 1824 wrote to memory of 2648 1824 WannaCry.exe 33 PID 1824 wrote to memory of 2648 1824 WannaCry.exe 33 PID 1824 wrote to memory of 2648 1824 WannaCry.exe 33 PID 1824 wrote to memory of 2344 1824 WannaCry.exe 34 PID 1824 wrote to memory of 2344 1824 WannaCry.exe 34 PID 1824 wrote to memory of 2344 1824 WannaCry.exe 34 PID 1824 wrote to memory of 2344 1824 WannaCry.exe 34 PID 1824 wrote to memory of 2272 1824 WannaCry.exe 35 PID 1824 wrote to memory of 2272 1824 WannaCry.exe 35 PID 1824 wrote to memory of 2272 1824 WannaCry.exe 35 PID 1824 wrote to memory of 2272 1824 WannaCry.exe 35 PID 1824 wrote to memory of 2160 1824 WannaCry.exe 37 PID 1824 wrote to memory of 2160 1824 WannaCry.exe 37 PID 1824 wrote to memory of 2160 1824 WannaCry.exe 37 PID 1824 wrote to memory of 2160 1824 WannaCry.exe 37 PID 1824 wrote to memory of 1044 1824 WannaCry.exe 38 PID 1824 wrote to memory of 1044 1824 WannaCry.exe 38 PID 1824 wrote to memory of 1044 1824 WannaCry.exe 38 PID 1824 wrote to memory of 1044 1824 WannaCry.exe 38 PID 1824 wrote to memory of 1352 1824 WannaCry.exe 44 PID 1824 wrote to memory of 1352 1824 WannaCry.exe 44 PID 1824 wrote to memory of 1352 1824 WannaCry.exe 44 PID 1824 wrote to memory of 1352 1824 WannaCry.exe 44 PID 1824 wrote to memory of 1508 1824 WannaCry.exe 45 PID 1824 wrote to memory of 1508 1824 WannaCry.exe 45 PID 1824 wrote to memory of 1508 1824 WannaCry.exe 45 PID 1824 wrote to memory of 1508 1824 WannaCry.exe 45 PID 1508 wrote to memory of 1044 1508 cmd.exe 47 PID 1508 wrote to memory of 1044 1508 cmd.exe 47 PID 1508 wrote to memory of 1044 1508 cmd.exe 47 PID 1508 wrote to memory of 1044 1508 cmd.exe 47 PID 1824 wrote to memory of 2556 1824 WannaCry.exe 48 PID 1824 wrote to memory of 2556 1824 WannaCry.exe 48 PID 1824 wrote to memory of 2556 1824 WannaCry.exe 48 PID 1824 wrote to memory of 2556 1824 WannaCry.exe 48 PID 1044 wrote to memory of 2576 1044 !WannaDecryptor!.exe 49 PID 1044 wrote to memory of 2576 1044 !WannaDecryptor!.exe 49 PID 1044 wrote to memory of 2576 1044 !WannaDecryptor!.exe 49 PID 1044 wrote to memory of 2576 1044 !WannaDecryptor!.exe 49 PID 2576 wrote to memory of 2464 2576 cmd.exe 51 PID 2576 wrote to memory of 2464 2576 cmd.exe 51 PID 2576 wrote to memory of 2464 2576 cmd.exe 51 PID 2576 wrote to memory of 2464 2576 cmd.exe 51 PID 2576 wrote to memory of 2832 2576 cmd.exe 53 PID 2576 wrote to memory of 2832 2576 cmd.exe 53 PID 2576 wrote to memory of 2832 2576 cmd.exe 53 PID 2576 wrote to memory of 2832 2576 cmd.exe 53 -
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\WannaCry.exe"C:\Users\Admin\AppData\Local\Temp\WannaCry.exe"1⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1824 -
C:\Windows\SysWOW64\cmd.execmd /c 135131722960247.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2836 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2868
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe f2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2648
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im MSExchange*2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2344
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im Microsoft.Exchange.*2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2272
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlserver.exe2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2160
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlwriter.exe2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1044
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe c2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1352
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C:\Windows\SysWOW64\cmd.execmd.exe /c start /b !WannaDecryptor!.exe v2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1508 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe v3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1044 -
C:\Windows\SysWOW64\cmd.execmd.exe /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2576 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet5⤵
- System Location Discovery: System Language Discovery
- Interacts with shadow copies
PID:2464
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2832
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2556
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2944
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
2File Deletion
2Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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Filesize
921B
MD52b510cf5ca71480bfa0841867c6a30f9
SHA12b60f3165e6ba035e57a139baaaf0525f8a8497e
SHA25605840cc3467b1ec019b91aa0de086b4539a55a96709e16c731bcd2a42384fa65
SHA512916e8927cbc854946a7d81add6e95251b4b17eecfd7d1dcd3f04c3bd2fc3cd197734f44de373dee33e58b2bf6ba6f1a81dea6d8838d53602f994d445c97abc39
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Filesize
136B
MD5bc79d16750cd0ab73615a48c57333d62
SHA13173a93364aad4552482a0e66738c46852bdf4f1
SHA2568f6ee3272f3b79a70e85de7e6a76dc87c31f40e548f4d78068ae32a58ca18e95
SHA51264a1d18a9344b88229429ddd7e404d17bc716ffc0213db23729ac093c394745999a5816b161d7cb27ebb12cac7c7639ae9423c44f88c3393ceccc9685b19b492
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Filesize
136B
MD5964ede59b63905a5265bfb01b0a41355
SHA1fc56f1320bf2612b37f9bd4f907673e6e41ebe8d
SHA256e8bbd96637ecd252c7e260140460e41ff87fc0a7646b83a804b313b0b3286def
SHA512e9dea96e5ea0ed84ba97556bdc35a4ae8b368ed93754f43cfe1f218ca284411163e59902c8e2c088e92524343da1147aea94da8848dc9dba0925dbe856300109
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Filesize
136B
MD53131a8afd10885464b7336713dfb9f2d
SHA1aaaa9063db57a02b02ee6f7de966d673a5b81743
SHA256437bdac6e2f3072632003cf1f40e17c04ed70c02fcb871512f14aa2210abc9d0
SHA5121dd105752ecaa73ef2af0a9f2951c999e7d1ed98700e69f75dc4bc75fbecc7199cc758b565802578c1963ff017eabe25adf1636ee14df1cd1aa7fcbbf5ab47b1
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Filesize
336B
MD53540e056349c6972905dc9706cd49418
SHA1492c20442d34d45a6d6790c720349b11ec591cde
SHA25673872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc
SHA512c949d147100aef59e382c03abf7b162ae62a4d43456eebd730fbedcf5f95f5e1a24f6e349690d52d75331878a6ee8f6b88a7162ee9cf2a49e142196b12d0133c
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Filesize
219B
MD55f6d40ca3c34b470113ed04d06a88ff4
SHA150629e7211ae43e32060686d6be17ebd492fd7aa
SHA2560fb5039a2fe7e90cdf3f22140d7f2103f94689b15609efe0edcc8430dd772fc1
SHA5124d4aa1abd2c9183202fd3f0a65b37f07ee0166ba6561f094c13c8ea59752c7bdd960e37c49583746d4464bc3b1dc0b63a1fe36a37ce7e5709cd76ed433befe35
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Filesize
628B
MD5ed862c1528584c6492d800fab68531a6
SHA1500e581dddc7d38233f6384a1567842dae16c350
SHA256a498e7ee9946c8ffa9bbc9595fb3db961e0dba18060c3c1c86d73425141b1033
SHA51224c2bcc73e62f4905a51767a8ea911f6e22951ca9a9ad35f609f02a8b422e8a3223bc807f7c4a70fb75cf9c537d593da4d374201673b15366de6b9e4dc14ee1e
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Filesize
42KB
MD5980b08bac152aff3f9b0136b616affa5
SHA12a9c9601ea038f790cc29379c79407356a3d25a3
SHA256402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
SHA512100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
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Filesize
797B
MD5afa18cf4aa2660392111763fb93a8c3d
SHA1c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA256227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
SHA5124161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b