Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
08-12-2024 20:11
Static task
static1
Behavioral task
behavioral1
Sample
1857c1dd7942a15d31b1d9b8eaa72749f296221402aa659bab6a1b48e37f4122.dll
Resource
win7-20240903-en
General
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Target
1857c1dd7942a15d31b1d9b8eaa72749f296221402aa659bab6a1b48e37f4122.dll
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Size
500KB
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MD5
d274670f913543a1596c9ca564938ff0
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SHA1
67e4bcf0912dea8125833f7aba776fba90d4186e
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SHA256
1857c1dd7942a15d31b1d9b8eaa72749f296221402aa659bab6a1b48e37f4122
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SHA512
8a384d715b7afb48be50ffa1cc4ea833417f051702515757b8cd8e945785ef1a5f919b3dc789da84f7ea740ee3127f87c189989959ef82f0f38ba6bf2c8ef58c
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SSDEEP
12288:Ph8fZLyb9PzVMBC/HVMOp4PkxHLCYwZckMQMNoMlYXN:P8F+Pzr/Hfp4MIYwZckMQmblsN
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 2 IoCs
pid Process 2520 rundll32mgr.exe 4136 WaterMark.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
resource yara_rule behavioral2/memory/2520-6-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4136-14-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4136-23-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4136-25-0x0000000000400000-0x0000000000421000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\Microsoft\WaterMark.exe rundll32mgr.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe rundll32mgr.exe File opened for modification C:\Program Files (x86)\Microsoft\pxB556.tmp rundll32mgr.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 2136 392 WerFault.exe 86 -
System Location Discovery: System Language Discovery 1 TTPs 5 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 IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WaterMark.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\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 (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1726941440" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "440453647" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{92641C42-B5A0-11EF-91C3-7ECF469E42CC} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31148461" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31148461" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1724441361" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31148461" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31148461" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1724441361" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1726941440" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{9261BAEB-B5A0-11EF-91C3-7ECF469E42CC} = "0" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe 4136 WaterMark.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4136 WaterMark.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 3028 iexplore.exe 2644 iexplore.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 2644 iexplore.exe 2644 iexplore.exe 3028 iexplore.exe 3028 iexplore.exe 1428 IEXPLORE.EXE 1428 IEXPLORE.EXE 3132 IEXPLORE.EXE 3132 IEXPLORE.EXE 1428 IEXPLORE.EXE 1428 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 4476 wrote to memory of 4504 4476 rundll32.exe 83 PID 4476 wrote to memory of 4504 4476 rundll32.exe 83 PID 4476 wrote to memory of 4504 4476 rundll32.exe 83 PID 4504 wrote to memory of 2520 4504 rundll32.exe 84 PID 4504 wrote to memory of 2520 4504 rundll32.exe 84 PID 4504 wrote to memory of 2520 4504 rundll32.exe 84 PID 2520 wrote to memory of 4136 2520 rundll32mgr.exe 85 PID 2520 wrote to memory of 4136 2520 rundll32mgr.exe 85 PID 2520 wrote to memory of 4136 2520 rundll32mgr.exe 85 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 392 4136 WaterMark.exe 86 PID 4136 wrote to memory of 2644 4136 WaterMark.exe 91 PID 4136 wrote to memory of 2644 4136 WaterMark.exe 91 PID 4136 wrote to memory of 3028 4136 WaterMark.exe 92 PID 4136 wrote to memory of 3028 4136 WaterMark.exe 92 PID 2644 wrote to memory of 3132 2644 iexplore.exe 94 PID 2644 wrote to memory of 3132 2644 iexplore.exe 94 PID 2644 wrote to memory of 3132 2644 iexplore.exe 94 PID 3028 wrote to memory of 1428 3028 iexplore.exe 95 PID 3028 wrote to memory of 1428 3028 iexplore.exe 95 PID 3028 wrote to memory of 1428 3028 iexplore.exe 95
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\1857c1dd7942a15d31b1d9b8eaa72749f296221402aa659bab6a1b48e37f4122.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4476 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\1857c1dd7942a15d31b1d9b8eaa72749f296221402aa659bab6a1b48e37f4122.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4504 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520 -
C:\Program Files (x86)\Microsoft\WaterMark.exe"C:\Program Files (x86)\Microsoft\WaterMark.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4136 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe5⤵PID:392
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 392 -s 2046⤵
- Program crash
PID:2136
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2644 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2644 CREDAT:17410 /prefetch:26⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3132
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3028 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3028 CREDAT:17410 /prefetch:26⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1428
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 392 -ip 3921⤵PID:4528
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD51f183ce23aead67e14c3472b43109763
SHA192e55d3557a1fdd6c2eab6282dee7d13134ae9db
SHA256657a1895a158bfb57dce6059274bd063c0273a2421c903bc8978fd3250be3964
SHA5125be76dbf70581a4a703d68ebe460875ef60373f52f39eaf4d65acd3b743d2f382b341dde170349f7001453041f8470091752c80f627633667344b4859848d2c5
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD50d44522d1b8732018efef869f1975293
SHA1c2876c5584c94b0e177bf1d8d53fda7ada728f46
SHA256a52889faff32d052d534fc4f001829c6df03bc2b1ca70f9da10d2e245083ef3d
SHA512f7251c35c58b2dc21a9ae81b9229755a9c23a6c217c01a938117487ba0cc4aeb7b02d12330e13a36187e50aaf9dc0e4efad8c2255667256f700980ecc8addc8e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD56df8ebab2adebd4f2ceb76218f769623
SHA11f0107b4ae3561ae86317afef53d8b4abaf87507
SHA256ef349df8860911a9629d1a48c0fa386c82d39fe74d662bd650787ccc51004cd5
SHA51219e207384d649ee37b7d83d49f8f90d2a0b10f5ad1fea95956f4365d81858217440aa775cba0aef187d16a0feef3d19f5abc26643ad7c8a6e8466c6ece55328c
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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{9261BAEB-B5A0-11EF-91C3-7ECF469E42CC}.dat
Filesize3KB
MD5ba3fd044c3fe46c7aac89cd4c191bfa7
SHA1d0461dfad538a7668151bcc228b21f6d8ad03fb1
SHA25662a190feaf61952bc5111267e780945d125a6df9e0265176e8e892b6381ec105
SHA51234a7d0988fb6b16dd273d2582d98cea0a043b75df7b619c60a4f9e2244418e726026968f0c7bb71bfd4b676f4db24883ea67324bdc7bfd44213d92a77b84bb88
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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{92641C42-B5A0-11EF-91C3-7ECF469E42CC}.dat
Filesize5KB
MD5a477a4f2eb3526550acbf56729f3d9ec
SHA1399e799782453e8ab939cc60aa326d6decbbeb85
SHA256244cc218d81b93424ea5f2abc16f654e3fbd2e439bcfc3ea1ce76f792f44f08a
SHA51207a29cbd1f091f836f7eb725b525f99d18052100a64e3e4495434fe542f9642439e954c40098c5a18196874dc66826b0b781d60b3c9d2fbac39087763cc6e461
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Filesize
15KB
MD51a545d0052b581fbb2ab4c52133846bc
SHA162f3266a9b9925cd6d98658b92adec673cbe3dd3
SHA256557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
SHA512bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
65KB
MD5a9ea94ee4a3bb43d4057823b2072dc54
SHA194ade3c34ec08613daba8a1240586c24f8169794
SHA2567edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789
SHA5120ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5