Resubmissions
22-09-2023 08:27
230922-kck5nsgg63 1022-09-2023 07:10
230922-hztdfsed7s 1022-09-2023 06:41
230922-hfy5lagb37 10Analysis
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max time kernel
142s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
22-09-2023 06:41
Static task
static1
Behavioral task
behavioral1
Sample
WannaCryptor v1.0.exe
Resource
win10v2004-20230915-en
General
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Target
WannaCryptor v1.0.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\AppData\Local\Temp\!Please Read Me!.txt
wannacry
15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Drops startup file 2 IoCs
Processes:
WannaCryptor v1.0.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDD044.tmp WannaCryptor v1.0.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDD05B.tmp WannaCryptor v1.0.exe -
Executes dropped EXE 4 IoCs
Processes:
!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exepid process 1304 !WannaDecryptor!.exe 1796 !WannaDecryptor!.exe 408 !WannaDecryptor!.exe 2312 !WannaDecryptor!.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
Processes:
WannaCryptor v1.0.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Update Task Scheduler = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WannaCryptor v1.0.exe\" /r" WannaCryptor v1.0.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
!WannaDecryptor!.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-919254492-3979293997-764407192-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\!WannaCryptor!.bmp" !WannaDecryptor!.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Kills process with taskkill 4 IoCs
Processes:
taskkill.exetaskkill.exetaskkill.exetaskkill.exepid process 5040 taskkill.exe 4132 taskkill.exe 3080 taskkill.exe 2460 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 49 IoCs
Processes:
taskkill.exetaskkill.exetaskkill.exetaskkill.exeWMIC.exevssvc.exedescription pid process Token: SeDebugPrivilege 4132 taskkill.exe Token: SeDebugPrivilege 2460 taskkill.exe Token: SeDebugPrivilege 3080 taskkill.exe Token: SeDebugPrivilege 5040 taskkill.exe Token: SeIncreaseQuotaPrivilege 2844 WMIC.exe Token: SeSecurityPrivilege 2844 WMIC.exe Token: SeTakeOwnershipPrivilege 2844 WMIC.exe Token: SeLoadDriverPrivilege 2844 WMIC.exe Token: SeSystemProfilePrivilege 2844 WMIC.exe Token: SeSystemtimePrivilege 2844 WMIC.exe Token: SeProfSingleProcessPrivilege 2844 WMIC.exe Token: SeIncBasePriorityPrivilege 2844 WMIC.exe Token: SeCreatePagefilePrivilege 2844 WMIC.exe Token: SeBackupPrivilege 2844 WMIC.exe Token: SeRestorePrivilege 2844 WMIC.exe Token: SeShutdownPrivilege 2844 WMIC.exe Token: SeDebugPrivilege 2844 WMIC.exe Token: SeSystemEnvironmentPrivilege 2844 WMIC.exe Token: SeRemoteShutdownPrivilege 2844 WMIC.exe Token: SeUndockPrivilege 2844 WMIC.exe Token: SeManageVolumePrivilege 2844 WMIC.exe Token: 33 2844 WMIC.exe Token: 34 2844 WMIC.exe Token: 35 2844 WMIC.exe Token: 36 2844 WMIC.exe Token: SeIncreaseQuotaPrivilege 2844 WMIC.exe Token: SeSecurityPrivilege 2844 WMIC.exe Token: SeTakeOwnershipPrivilege 2844 WMIC.exe Token: SeLoadDriverPrivilege 2844 WMIC.exe Token: SeSystemProfilePrivilege 2844 WMIC.exe Token: SeSystemtimePrivilege 2844 WMIC.exe Token: SeProfSingleProcessPrivilege 2844 WMIC.exe Token: SeIncBasePriorityPrivilege 2844 WMIC.exe Token: SeCreatePagefilePrivilege 2844 WMIC.exe Token: SeBackupPrivilege 2844 WMIC.exe Token: SeRestorePrivilege 2844 WMIC.exe Token: SeShutdownPrivilege 2844 WMIC.exe Token: SeDebugPrivilege 2844 WMIC.exe Token: SeSystemEnvironmentPrivilege 2844 WMIC.exe Token: SeRemoteShutdownPrivilege 2844 WMIC.exe Token: SeUndockPrivilege 2844 WMIC.exe Token: SeManageVolumePrivilege 2844 WMIC.exe Token: 33 2844 WMIC.exe Token: 34 2844 WMIC.exe Token: 35 2844 WMIC.exe Token: 36 2844 WMIC.exe Token: SeBackupPrivilege 1208 vssvc.exe Token: SeRestorePrivilege 1208 vssvc.exe Token: SeAuditPrivilege 1208 vssvc.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
Processes:
!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exepid process 1304 !WannaDecryptor!.exe 1304 !WannaDecryptor!.exe 1796 !WannaDecryptor!.exe 1796 !WannaDecryptor!.exe 408 !WannaDecryptor!.exe 408 !WannaDecryptor!.exe 2312 !WannaDecryptor!.exe 2312 !WannaDecryptor!.exe -
Suspicious use of WriteProcessMemory 39 IoCs
Processes:
WannaCryptor v1.0.execmd.execmd.exe!WannaDecryptor!.execmd.exedescription pid process target process PID 1532 wrote to memory of 3892 1532 WannaCryptor v1.0.exe cmd.exe PID 1532 wrote to memory of 3892 1532 WannaCryptor v1.0.exe cmd.exe PID 1532 wrote to memory of 3892 1532 WannaCryptor v1.0.exe cmd.exe PID 3892 wrote to memory of 560 3892 cmd.exe cscript.exe PID 3892 wrote to memory of 560 3892 cmd.exe cscript.exe PID 3892 wrote to memory of 560 3892 cmd.exe cscript.exe PID 1532 wrote to memory of 1304 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 1304 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 1304 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 3080 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 3080 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 3080 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 2460 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 2460 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 2460 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 5040 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 5040 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 5040 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 4132 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 4132 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 4132 1532 WannaCryptor v1.0.exe taskkill.exe PID 1532 wrote to memory of 1796 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 1796 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 1796 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 1984 1532 WannaCryptor v1.0.exe cmd.exe PID 1532 wrote to memory of 1984 1532 WannaCryptor v1.0.exe cmd.exe PID 1532 wrote to memory of 1984 1532 WannaCryptor v1.0.exe cmd.exe PID 1984 wrote to memory of 408 1984 cmd.exe !WannaDecryptor!.exe PID 1984 wrote to memory of 408 1984 cmd.exe !WannaDecryptor!.exe PID 1984 wrote to memory of 408 1984 cmd.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 2312 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 2312 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 1532 wrote to memory of 2312 1532 WannaCryptor v1.0.exe !WannaDecryptor!.exe PID 408 wrote to memory of 2976 408 !WannaDecryptor!.exe cmd.exe PID 408 wrote to memory of 2976 408 !WannaDecryptor!.exe cmd.exe PID 408 wrote to memory of 2976 408 !WannaDecryptor!.exe cmd.exe PID 2976 wrote to memory of 2844 2976 cmd.exe WMIC.exe PID 2976 wrote to memory of 2844 2976 cmd.exe WMIC.exe PID 2976 wrote to memory of 2844 2976 cmd.exe WMIC.exe -
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\WannaCryptor v1.0.exe"C:\Users\Admin\AppData\Local\Temp\WannaCryptor v1.0.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1532 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c 310631695364905.bat2⤵
- Suspicious use of WriteProcessMemory
PID:3892 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵PID:560
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe f2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1304 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im MSExchange*2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3080 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im Microsoft.Exchange.*2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2460 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlserver.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:5040 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlwriter.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4132 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe c2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1796 -
C:\Windows\SysWOW64\cmd.execmd.exe /c start /b !WannaDecryptor!.exe v2⤵
- Suspicious use of WriteProcessMemory
PID:1984 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe v3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:408 -
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⤵
- Suspicious use of WriteProcessMemory
PID:2976 -
C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- Suspicious use of AdjustPrivilegeToken
PID:2844 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- Suspicious use of SetWindowsHookEx
PID:2312
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1208
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5d4b5f1619363f70d0f35afa7e0710485
SHA150e3a7a67ab98892a21089c789178977fd50a211
SHA2565f5a46761ff4bd909ac0fe31b8c553d831bb42d67baf99cafa898c961ead746d
SHA512d52225abcfa63ee9afabd533a21d472c69ff778486a14e03ed3f667f87c299b2a0a047244cd4a20582486e6d040e1d59cefcc4b116fb904842adf16be44e17ad
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Filesize
797B
MD5afa18cf4aa2660392111763fb93a8c3d
SHA1c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA256227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
SHA5124161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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Filesize
1KB
MD5d4b5f1619363f70d0f35afa7e0710485
SHA150e3a7a67ab98892a21089c789178977fd50a211
SHA2565f5a46761ff4bd909ac0fe31b8c553d831bb42d67baf99cafa898c961ead746d
SHA512d52225abcfa63ee9afabd533a21d472c69ff778486a14e03ed3f667f87c299b2a0a047244cd4a20582486e6d040e1d59cefcc4b116fb904842adf16be44e17ad
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Filesize
136B
MD5df56d1a9fcb275ab053af00ad52034a4
SHA122b3029671bd23c65f2ba0f47ee4996c160f8cdc
SHA2565ef2937d12bcfdb70c035e0853ec6869ce89d2c86d18699b6d1a298307757991
SHA5126edbb56cb5732935ae4c5a237558f3808d6cdb3a4a5172b5115c6833695413779ff4e025f67819b15adfeb8c303cb842a168a5208dddd6588d48bf80f944990e
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Filesize
136B
MD551b70c87bcda899d8a8006e8d5d299bd
SHA1fe9230e955e2704a7b6a4683c45864585af97bd0
SHA25620e6ed969f853c57fd0efedf3b22f1f1e8b920f7fb5c5505d26f9eee9fb0dfab
SHA5127c828d258f6151bef1eaeafafaeda3a775b16c53108ead7bb77e0ce1285505327457f878919b7b829822d3f0e3fdb50336b4653b7f7ffc5fb56427645940bb31
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Filesize
136B
MD5a05b6e2c95a2fa659181f30fe4d4945c
SHA1ce3d291dd40f04a1711282082c675865fc9274e2
SHA256bc98479472a438b76b3bb2d3e01e14d4415c120c4c7490d26ff6cf1e9ee0cc28
SHA5124047c9bd1b84d9ef1240ef9f8d2a75d784afb4fa1159111c76deed297b908dabb5f7b1f63b3bff3ab3655f55ff244145f5ef5a6687737662eb4cb4859b29704a
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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
MD5d692e9c7fd727cd61b621b135b6fc78c
SHA1ed5947f7e1b0307a090a3c4ba07cc22dec7f36c1
SHA25653b599a784b84be450e6e603a3ba59da954d62161c9d0547d2da7e196a1f3cea
SHA512df9eab5a1f402fbd50d27ec55d4c38aedd51c94f0999adcdf6ed9d57e995e008172fc8595d6606a88570c5d23e1a2f8b2e3d80ce1dd54603d033f0de47a3f138
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Filesize
628B
MD5d692e9c7fd727cd61b621b135b6fc78c
SHA1ed5947f7e1b0307a090a3c4ba07cc22dec7f36c1
SHA25653b599a784b84be450e6e603a3ba59da954d62161c9d0547d2da7e196a1f3cea
SHA512df9eab5a1f402fbd50d27ec55d4c38aedd51c94f0999adcdf6ed9d57e995e008172fc8595d6606a88570c5d23e1a2f8b2e3d80ce1dd54603d033f0de47a3f138
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Filesize
42KB
MD5980b08bac152aff3f9b0136b616affa5
SHA12a9c9601ea038f790cc29379c79407356a3d25a3
SHA256402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
SHA512100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5