Analysis
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max time kernel
122s -
max time network
131s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
30/03/2024, 00:28
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe
Resource
win7-20240221-en
General
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Target
2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe
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Size
240KB
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MD5
4ac5f59bf52689d7e4049c58976073c0
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SHA1
29de74bf95deedb2a8880494c0b0e1ac710cc57f
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SHA256
d1ae2bf536d98cd937e819a098bb6eb7ba2af009dd5724563a6c03233e22885e
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SHA512
a81bd7f818a974b8b405d0e4d7c95111461400d53e8820cc5ba4a2b80519be4514635255bf819660c931810d0e4c26e81f2fadae7a63aae91d1547e519d68d36
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SSDEEP
6144:TY6Aw1tj3vHMeC6uZy1RfzNf69UGC5p76KXxGj6:2w1FRC5y1RfzNGU9B6KB
Malware Config
Signatures
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UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/files/0x000b000000012265-2.dat UPX behavioral1/memory/2096-12-0x0000000000400000-0x000000000042E000-memory.dmp UPX behavioral1/memory/3036-15-0x0000000000400000-0x000000000042E000-memory.dmp UPX behavioral1/memory/3036-19-0x0000000000400000-0x000000000042E000-memory.dmp UPX behavioral1/memory/2356-496-0x0000000001130000-0x0000000001173000-memory.dmp UPX behavioral1/memory/2096-498-0x00000000003C0000-0x00000000003CF000-memory.dmp UPX -
Executes dropped EXE 2 IoCs
pid Process 2096 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe 3036 DesktopLayer.exe -
Loads dropped DLL 2 IoCs
pid Process 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 2096 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe -
resource yara_rule behavioral1/files/0x000b000000012265-2.dat upx behavioral1/memory/2096-12-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/3036-15-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/3036-19-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2096-498-0x00000000003C0000-0x00000000003CF000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px4B43.tmp 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 2572 2356 WerFault.exe 27 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "417920383" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{71829111-EE2C-11EE-ACBC-CAFA5A0A62FD} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\SearchScopes iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "3" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3036 DesktopLayer.exe 3036 DesktopLayer.exe 3036 DesktopLayer.exe 3036 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2624 iexplore.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 2624 iexplore.exe 2624 iexplore.exe 2656 IEXPLORE.EXE 2656 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2356 wrote to memory of 2096 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 28 PID 2356 wrote to memory of 2096 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 28 PID 2356 wrote to memory of 2096 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 28 PID 2356 wrote to memory of 2096 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 28 PID 2096 wrote to memory of 3036 2096 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe 29 PID 2096 wrote to memory of 3036 2096 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe 29 PID 2096 wrote to memory of 3036 2096 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe 29 PID 2096 wrote to memory of 3036 2096 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe 29 PID 3036 wrote to memory of 2624 3036 DesktopLayer.exe 30 PID 3036 wrote to memory of 2624 3036 DesktopLayer.exe 30 PID 3036 wrote to memory of 2624 3036 DesktopLayer.exe 30 PID 3036 wrote to memory of 2624 3036 DesktopLayer.exe 30 PID 2356 wrote to memory of 2572 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 31 PID 2356 wrote to memory of 2572 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 31 PID 2356 wrote to memory of 2572 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 31 PID 2356 wrote to memory of 2572 2356 2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe 31 PID 2624 wrote to memory of 2656 2624 iexplore.exe 32 PID 2624 wrote to memory of 2656 2624 iexplore.exe 32 PID 2624 wrote to memory of 2656 2624 iexplore.exe 32 PID 2624 wrote to memory of 2656 2624 iexplore.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnit.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2356 -
C:\Users\Admin\AppData\Local\Temp\2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exeC:\Users\Admin\AppData\Local\Temp\2024-03-30_4ac5f59bf52689d7e4049c58976073c0_mafia_ramnitSrv.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2096 -
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:3036 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2624 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2624 CREDAT:275457 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2656
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2356 -s 1882⤵
- Program crash
PID:2572
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD56833edd309ffb29474acef998fc95064
SHA147ec918332e79358758ee179f5a1641d73765b58
SHA2568db87ecf929e1f590e1d591a89214aa90ef42c1747008f43bfd45f3c9bffa097
SHA5126744c61e26cc2239d46f538c03a4d01e3a275ede9a7edca657e776560a153757e0c17a3d6af648887ca033bf8026dd88ce5784257ebfbfc2810651bb69818635
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5d202b3fcab2271cb345dff2f5da3cadd
SHA17239077e87ba4788cefa965286d8d6d316429414
SHA256c6060ffd7bda3f3757523da0fddf1b5da63c40627e2d170562b27a2b095288f5
SHA512d1c23eb3534552cde94756e05b11c76e716b59cf2c73cb058979d7207ff20294c504a04a99d9452d2dda0fdc4c9cef7ed234ec48638c7ad1f02453f95b5f560a
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5772fc4f32e41f53e064bd3b80a708459
SHA1b691c4c3b8740480c637af6002353b61cf41d812
SHA2569895d10097357b50493f865e96468a9a6ef9626ea18d3fb872627042afcb5b31
SHA512b768ef6da86f7c7ea77c24433f4f59b8a9a7426aef26b131622d63a419d2219facbac4c3c4447080c6c510ba1284fbe20527c02d8dfdeaa7ea56b9aead4be8ef
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5e005ccec425d8b212ba56245548bef51
SHA10cfced8c4eadec314ca40dc32bf170092a5a329c
SHA256011f5bba120b4a8168797a0a3d3a0933f13bf7e7f22fe29736d53f4754e422be
SHA5121a3bcb24b3f937fefe30b69193b46ccf7086828be53fd0e72b35761823dccc7cdb9cf23f607e5f8c8cb09195a11cd9d0211d93fe5d9d8682a28f7084fe766474
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5ecd8472c51bd65c1c130f8a388bd0a96
SHA177d298c0dedb8db42f1491b2be012402826df208
SHA2567e1c3a3de82310f4466be7c329c27fe0872035e623ea9848c81b261ce060e5d5
SHA5129dca140f54cb6a2ff056e60aa7cbf9fc95abf7f56d4b29914c0c52cc3bdee6156cedaebac403b64d7e1d12c839c48c470280476ff71e035437c9ebd0ed7dbc57
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD503f8349f0f6ef490a8e82db44d8bd7c7
SHA120ed3cce67b193054272e8c535e76b83ae980b9b
SHA2569ffe0e33fb2cdbc5db5388ae2383cd492d3d772ca36aa46379e874b3d41af315
SHA512af87c75485f4677a79d2028f432423430203cfd850169e6f1be63ec1afa3095d007fec6153009f4211c75b639469e0b552324a60f1da9b6812bc12f9952bef0f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5c07cb75d5bfa87dce672a34b625fcc54
SHA1d91539a4d4470b633c18cbe73e00b84a42914870
SHA256a66423760279110685c2db7ff57db2f37f855feefa9bc8dec7a478abf75e5179
SHA512e4a2fbe10abd4723fbbe34c92df5d19ac143d6fadf6559db38cc1e82ccc163e6a92945814a72e131071a2a732335d5fd8fb7e2c9069a4105738dfef940c53614
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD573084660c553e96f1ec36068f7dcc5c8
SHA12da5be67b51e2c740ec454b1a990b2906f97d454
SHA256bb904303cbc660c4868889533e110cfa31e6f00d4d8fec5f73e41d5c5c938fa7
SHA51254c944df134608df83b23dc96fedf932e3032db246b55a9a088c68caa0a73cdedbb976ebc6e97a8045606eb2f35ca748decc756c98308cdf642f41e597fc3729
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD53d7365b2bcdf41d19c26a0cc524fc101
SHA18b530e5b018db3412e6df799cb24d2abbab101d8
SHA256e8c781106ad797c4de1c7f899f519ff003576dea0434ee30cc90a759e6513074
SHA51271fa70ef59eaedfd669247645879c48923a43ffe39b907b7a4739d6f316c9f18d8a75f3bb71346998e91e3a8fc3ca1dd4d4dd59df442141a8afb251dbfa03cc8
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5835939648508a16f9bcdefd61bd1c33e
SHA1a924f8927025731ab70cb094265a6876da664ce7
SHA256adbf403f1d60249e84657b15c394a7a1eb0f067cb5d1da8cd73742dc6b9ac39b
SHA512b80bcb8cdc5b5be6412b5d584c25aee06cb84fdea3de491737e1a85c031b90629fd9a7f6c41c891a6890868ca5dc4c4ec187af173f1862090d6dc97be98be760
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5bc4b99c5db0be56e15c33e42a1ebedc7
SHA1cb5f0c082afea55a53d2f802c08bfc163bb2bc3b
SHA2560dfaa6563b5ee42e45c0c44be6db16d491b5f32f6a5c55f15884be400cd5218a
SHA51271eca0a6e400716bfc186d92b788e78166e668b16164b6c8304b6032310228473c355895162883fd4499924d1e6b7b21224738017cb347b88c64f537a59e8297
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5aacc5a5b28684737d5d1bfbba8d045f2
SHA15990e64ca0bb64c3649591afb885bd05d04b564b
SHA25610f30a08da2cdcc655a1e5baf9f88da4c313e0db6347febb97666ec7aefaa1d6
SHA512beb42c248a577b80d51520ca899bae0e7fffb5cb8a63bec329f389d5cadde0a44ec7864c09894d850c135fa1164595615b1ef452d6e565a4835cd614de92b1b1
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5fc062a7544e0f10581dd8f00ee44696e
SHA1ebfd945607e5fde042bd62557c38d7891619b1f4
SHA256f57b35a01cafc42bf3ba96310e6d8a5290cf9b6ad0e23b50be235437158a313b
SHA5128cbe4cc3deb3526a7aa6563029cc6bca389e41249c439ff8ca6433eff1765d180cf80d3144447c46813ca9a7cac1a0d69fca7745e4c58244d9924c6af8581299
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD51d17ff2120582ef9b44e55d67227aa20
SHA1fe0e7a6de37b0b573c9f0597304864d8f94a375a
SHA256f5b7ff09bbeb9dfd4027d6c60f30d7c3412463eeaa2527b647ae583237d9fdb8
SHA512cc6712d85caae6ccfea2d9b26926e99c36a0e6558bb6f4c00136bca9baa4f4bd80131ef5d199f4d57a8c9e1e44b7c4799efa7432c412ac7068ca9795451bef7c
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Filesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
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Filesize
68KB
MD529f65ba8e88c063813cc50a4ea544e93
SHA105a7040d5c127e68c25d81cc51271ffb8bef3568
SHA2561ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa
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Filesize
177KB
MD5435a9ac180383f9fa094131b173a2f7b
SHA176944ea657a9db94f9a4bef38f88c46ed4166983
SHA25667dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
SHA5121a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a