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Analysis
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max time kernel
140s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
01/10/2023, 21:21
Static task
static1
Behavioral task
behavioral1
Sample
2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe
Resource
win7-20230831-en
General
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Target
2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe
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Size
3.5MB
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MD5
f44297f2034aff40dddd6ed8521d105c
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SHA1
7740082dec547abef66254f26acfff83cc89011d
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SHA256
79dfb888ef76df83ccc2ab9627cffa592127c11bafefd3d6c469fa2d609baefb
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SHA512
c3c64c84e89d03511d40654513ccdee1acaf70c8ad0e50a1818a05f203a27e394a9454b6f7ce561068724ae2389f7e025f29e9383d57240859d85198f300a940
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SSDEEP
98304:+1fX1YJdXWdlfmkfldqgVMgDnwo+kUNWvI3npO9Dz7vYzLEEvBZ0qwmy7mpmm9m4:+90dXwgSkpWfDz7vYzLEYBZ0qwmy7mpH
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 2024 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe 1768 DesktopLayer.exe -
resource yara_rule behavioral2/files/0x000400000001e5c6-3.dat upx behavioral2/memory/2024-4-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x000400000001e5c6-6.dat upx behavioral2/memory/2024-8-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x000b0000000231b8-11.dat upx behavioral2/files/0x000b0000000231b8-14.dat upx behavioral2/memory/1768-16-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe" 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px2C4B.tmp 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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description ioc Process Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\UpgradeTime = 042d5e82d5e7d901 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\NTTopResultURL = "http://www.bing.com/search?q={searchTerms}&src=IE-SearchBox&FORM=IENTTR" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\User Preferences iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A} iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\"" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\SuggestionsURL = "http://api.bing.com/qsml.aspx?query={searchTerms}&maxwidth={ie:maxWidth}&rowheight={ie:rowHeight}§ionHeight={ie:sectionHeight}&FORM=IESS02&market={language}" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\DefaultScope = "{0633EE93-D776-472f-A0FF-E1416B8B2E3A}" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{96592E4C-60A0-11EE-83FE-FEAC1AA35865} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\Version = "5" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\FaviconURLFallback = "http://www.bing.com/favicon.ico" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\FaviconPath = "C:\\Users\\Admin\\AppData\\LocalLow\\Microsoft\\Internet Explorer\\Services\\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "401529517" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\SuggestionsURLFallback = "http://api.bing.com/qsml.aspx?query={searchTerms}&maxwidth={ie:maxWidth}&rowheight={ie:rowHeight}§ionHeight={ie:sectionHeight}&FORM=IESS02&market={language}" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\URL = "http://www.bing.com/search?q={searchTerms}&src=IE-SearchBox&FORM=IESR02" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\NTLogoPath = "C:\\Users\\Admin\\AppData\\LocalLow\\Microsoft\\Internet Explorer\\Services\\" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\NTLogoURL = "http://go.microsoft.com/fwlink/?LinkID=403856&language={language}&scale={scalelevel}&contrast={contrast}" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\NTSuggestionsURL = "http://api.bing.com/qsml.aspx?query={searchTerms}&market={language}&maxwidth={ie:maxWidth}&rowheight={ie:rowHeight}§ionHeight={ie:sectionHeight}&FORM=IENTSS" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\FaviconURL = "http://www.bing.com/favicon.ico" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}\NTURL = "http://www.bing.com/search?q={searchTerms}&src=IE-SearchBox&FORM=IENTSR" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\User Preferences\3DB9590C4C4C26C4CCBDD94ECAD790359708C3267B = 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 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\User Preferences\2BB20B33B4171CDAAB6469225AE6A582ED33D7B488 = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000091f6bb296bed3f4ab6e1d050ca02d81f000000000200000000001066000000010000200000004b2ab8a7e5c5601bfdcf6af98f43c192551e1d85da337993e37f8346385357fc000000000e80000000020000200000001b40a258c77f4d81b5b6c4800f36ee2cb47df9ef59f8f2d9a0f8bb70cb8c8c0f10000000d94f6056f229b361d2f3198115b21701400000003634ac1a235ff962e66dfaa69841e5c377a29f00e372c903ba3f07eac29904dae0001afb6b1994136bca1524250e1f99b32b0adbce23414c63a6821feec2aacf iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Internet Explorer\SearchScopes iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1768 DesktopLayer.exe 1768 DesktopLayer.exe 1768 DesktopLayer.exe 1768 DesktopLayer.exe 1768 DesktopLayer.exe 1768 DesktopLayer.exe 1768 DesktopLayer.exe 1768 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2284 iexplore.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4380 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe 2284 iexplore.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 4380 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe -
Suspicious use of SetWindowsHookEx 7 IoCs
pid Process 4380 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe 2284 iexplore.exe 2284 iexplore.exe 5060 IEXPLORE.EXE 5060 IEXPLORE.EXE 5060 IEXPLORE.EXE 5060 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4380 wrote to memory of 2024 4380 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe 84 PID 4380 wrote to memory of 2024 4380 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe 84 PID 4380 wrote to memory of 2024 4380 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe 84 PID 2024 wrote to memory of 1768 2024 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe 85 PID 2024 wrote to memory of 1768 2024 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe 85 PID 2024 wrote to memory of 1768 2024 2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe 85 PID 1768 wrote to memory of 2284 1768 DesktopLayer.exe 86 PID 1768 wrote to memory of 2284 1768 DesktopLayer.exe 86 PID 2284 wrote to memory of 5060 2284 iexplore.exe 89 PID 2284 wrote to memory of 5060 2284 iexplore.exe 89 PID 2284 wrote to memory of 5060 2284 iexplore.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe"C:\Users\Admin\AppData\Local\Temp\2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JC.exe"1⤵
- Adds Run key to start application
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4380 -
C:\Users\Admin\AppData\Local\Temp\2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exeC:\Users\Admin\AppData\Local\Temp\2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1768 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2284 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2284 CREDAT:17410 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:5060
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico
Filesize4KB
MD5da597791be3b6e732f0bc8b20e38ee62
SHA11125c45d285c360542027d7554a5c442288974de
SHA2565b2c34b3c4e8dd898b664dba6c3786e2ff9869eff55d673aa48361f11325ed07
SHA512d8dc8358727590a1ed74dc70356aedc0499552c2dc0cd4f7a01853dd85ceb3aead5fbdc7c75d7da36db6af2448ce5abdff64cebdca3533ecad953c061a9b338e
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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C:\Users\Admin\AppData\Local\Temp\2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe
Filesize55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\2023-08-26_f44297f2034aff40dddd6ed8521d105c_mafia_ramnit_JCSrv.exe
Filesize55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a