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Analysis
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max time kernel
135s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
30/10/2022, 02:39
Static task
static1
Behavioral task
behavioral1
Sample
b201033f28361af6fd7baeaa5f1e90635198cda68a27f81d7c2baa9f667842bf.dll
Resource
win7-20220812-en
General
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Target
b201033f28361af6fd7baeaa5f1e90635198cda68a27f81d7c2baa9f667842bf.dll
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Size
691KB
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MD5
a2fb9029d34ba7ab009c79f11b519580
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SHA1
67534234e28e24857c9f622e20a2f41b311e4cac
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SHA256
b201033f28361af6fd7baeaa5f1e90635198cda68a27f81d7c2baa9f667842bf
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SHA512
df87748ef041414f88ff705fb7faa794dbaa04d90e324a093f8d68223560b82f7a9c43d099fe3ef42637ccddbc694ea7027ff19ffde4a3984b85b28f9efed8f5
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SSDEEP
12288:rNIyZN4+Wv4PLq6Okrh9ZN/hs9DsdSx+R0:r9TPmirh9Zdh6/i0
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 3616 rundll32mgr.exe 632 WaterMark.exe -
resource yara_rule behavioral2/memory/3616-139-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3616-138-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3616-143-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/632-147-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/632-149-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/632-150-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/632-154-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/632-157-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/632-158-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/632-159-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/632-160-0x0000000000400000-0x0000000000421000-memory.dmp upx -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxC095.tmp rundll32mgr.exe File created C:\Program Files (x86)\Microsoft\WaterMark.exe rundll32mgr.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe rundll32mgr.exe -
Program crash 2 IoCs
pid pid_target Process procid_target 2356 2976 WerFault.exe 82 1564 1752 WerFault.exe 87 -
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2855229510" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30993504" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30993504" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2852417011" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30993504" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373900236" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{D5476FD6-5853-11ED-A0EE-E2272FE8D9C1} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{D5404AA8-5853-11ED-A0EE-E2272FE8D9C1} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3e0000003e000000c4040000a3020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2855229510" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2852417011" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30993504" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE -
Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe 632 WaterMark.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 308 iexplore.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 632 WaterMark.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 308 iexplore.exe 220 iexplore.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 220 iexplore.exe 220 iexplore.exe 308 iexplore.exe 308 iexplore.exe 3464 IEXPLORE.EXE 3464 IEXPLORE.EXE 4256 IEXPLORE.EXE 4256 IEXPLORE.EXE 3464 IEXPLORE.EXE 3464 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 3616 rundll32mgr.exe 632 WaterMark.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 2168 wrote to memory of 2976 2168 rundll32.exe 82 PID 2168 wrote to memory of 2976 2168 rundll32.exe 82 PID 2168 wrote to memory of 2976 2168 rundll32.exe 82 PID 2976 wrote to memory of 3616 2976 rundll32.exe 84 PID 2976 wrote to memory of 3616 2976 rundll32.exe 84 PID 2976 wrote to memory of 3616 2976 rundll32.exe 84 PID 3616 wrote to memory of 632 3616 rundll32mgr.exe 86 PID 3616 wrote to memory of 632 3616 rundll32mgr.exe 86 PID 3616 wrote to memory of 632 3616 rundll32mgr.exe 86 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 1752 632 WaterMark.exe 87 PID 632 wrote to memory of 308 632 WaterMark.exe 91 PID 632 wrote to memory of 308 632 WaterMark.exe 91 PID 632 wrote to memory of 220 632 WaterMark.exe 92 PID 632 wrote to memory of 220 632 WaterMark.exe 92 PID 308 wrote to memory of 3464 308 iexplore.exe 94 PID 308 wrote to memory of 3464 308 iexplore.exe 94 PID 308 wrote to memory of 3464 308 iexplore.exe 94 PID 220 wrote to memory of 4256 220 iexplore.exe 93 PID 220 wrote to memory of 4256 220 iexplore.exe 93 PID 220 wrote to memory of 4256 220 iexplore.exe 93
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b201033f28361af6fd7baeaa5f1e90635198cda68a27f81d7c2baa9f667842bf.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b201033f28361af6fd7baeaa5f1e90635198cda68a27f81d7c2baa9f667842bf.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2976 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3616 -
C:\Program Files (x86)\Microsoft\WaterMark.exe"C:\Program Files (x86)\Microsoft\WaterMark.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:632 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe5⤵PID:1752
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1752 -s 2086⤵
- Program crash
PID:1564
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:308 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:308 CREDAT:17410 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3464
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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:220 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:220 CREDAT:17410 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4256
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2976 -s 6083⤵
- Program crash
PID:2356
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2976 -ip 29761⤵PID:4760
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1752 -ip 17521⤵PID:4412
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
106KB
MD589ec15b65572ad461a12bf515c8e59cf
SHA1bebc445ba7d5bd55bf1a64df2d99e470299b24ab
SHA25652b43a62647a170a90d7f62ba5fabb66529e6b9b958367c202d5d9edab5efbd0
SHA512030217c03de5b34d7a3cf84007e322174f3475c426f7ab922815af4e9910c8a84566a811a97a9f18e2ec1f71b0a495c94b149cc168935b76d9a559908a8db872
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Filesize
106KB
MD589ec15b65572ad461a12bf515c8e59cf
SHA1bebc445ba7d5bd55bf1a64df2d99e470299b24ab
SHA25652b43a62647a170a90d7f62ba5fabb66529e6b9b958367c202d5d9edab5efbd0
SHA512030217c03de5b34d7a3cf84007e322174f3475c426f7ab922815af4e9910c8a84566a811a97a9f18e2ec1f71b0a495c94b149cc168935b76d9a559908a8db872
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD55ddb1febcd291eb59d3d67d24a05bfd0
SHA1fe957affe27cb991f332e7f5c86d3a15359bd3b9
SHA256ec45a385c906b3d925ebbe6532d10adec9a14c1733c756c64db5133bd9d88dcb
SHA51262d00893402fae125ae3428da2495b0eb864b125f975cd887f894f7298a4a86f361cf50aaa7c9b69f3dcb734a950c43472778ea4062b3146c3de5623d08dcd21
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize434B
MD5914d942ec69a3a63d810babf31f3f485
SHA1c79a07d276436f28002dc43c5a86749b7586a79b
SHA25684d5011f7851a82e204a9940b30ad708b0372a87b92ae04506d127ae3303d7d3
SHA51204321de072745cc06c5a28741c390aaf6feefd7a9f66c25ec46e2c093d005bdc434a0399e9be607f6e664cd5750db27cc142b51a7ab2a7de8a4fef3df2281c6c
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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{D5404AA8-5853-11ED-A0EE-E2272FE8D9C1}.dat
Filesize5KB
MD550514e6cf50204a52d3bc38518050660
SHA18217833145259673648f5b6b597bbdecbe73448c
SHA256a45414d8f8091f9fdaf993d0a1c51c0fee118d33434f44ebeb7e7ba02360d2fb
SHA512e858ee5fef51b0ed9c27161e82e03549ae933f02501877e60df06767c79cde62ea22a7b589dbbc45677e58ac5006833e7adc813ddbde645ed5a26975eac6d662
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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{D5476FD6-5853-11ED-A0EE-E2272FE8D9C1}.dat
Filesize3KB
MD5c74be811c62f5306360e909088c2a9d7
SHA1d0708517894bb588e5a550cd5aaf63412dd393be
SHA2562d7279c9dd7335208d8aa622f2936fc52eb4f2d6483846dab7fcbe8ac866ac11
SHA512cb6ccea51580fa11408a714846d4b449f480d4b7afacc422a3d59d5725f85de62f6506f7898167b5fac7e63f82f448b74f641e12fa4861c48b98ba4a3186715e
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Filesize
106KB
MD589ec15b65572ad461a12bf515c8e59cf
SHA1bebc445ba7d5bd55bf1a64df2d99e470299b24ab
SHA25652b43a62647a170a90d7f62ba5fabb66529e6b9b958367c202d5d9edab5efbd0
SHA512030217c03de5b34d7a3cf84007e322174f3475c426f7ab922815af4e9910c8a84566a811a97a9f18e2ec1f71b0a495c94b149cc168935b76d9a559908a8db872
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Filesize
106KB
MD589ec15b65572ad461a12bf515c8e59cf
SHA1bebc445ba7d5bd55bf1a64df2d99e470299b24ab
SHA25652b43a62647a170a90d7f62ba5fabb66529e6b9b958367c202d5d9edab5efbd0
SHA512030217c03de5b34d7a3cf84007e322174f3475c426f7ab922815af4e9910c8a84566a811a97a9f18e2ec1f71b0a495c94b149cc168935b76d9a559908a8db872