Analysis
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max time kernel
26s -
max time network
23s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
24-06-2024 16:51
Behavioral task
behavioral1
Sample
Bonus Letter 2024 for Bander - 5173.pdf
Resource
win11-20240508-en
General
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Target
Bonus Letter 2024 for Bander - 5173.pdf
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Size
60KB
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MD5
d00bed831d690d16165fa1db86527e79
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SHA1
85ab192721d645ae275422c7b0ce4a8d5c7023bb
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SHA256
398498cbabedad9a6032a585339072bba9c773634342fa4bd19db89fbf4ed27d
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SHA512
0d98f6561dd06d478940d7ca323a8f81eed160123fb4ec4c0e3f3482496e1c1b2a90179292bb1e9b3795b84481965c55dfb2719f2c736131be38bd01335e3e37
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SSDEEP
1536:iimsI382PflE6hO5Sox1NtwXdqQe2LNEbW8IwU/RL:sf2v5S2NtwxLNECTZL
Malware Config
Signatures
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
AcroRd32.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz AcroRd32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 AcroRd32.exe -
Processes:
AcroRd32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION AcroRd32.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
Processes:
AcroRd32.exepid process 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
AcroRd32.exepid process 3760 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
AcroRd32.exepid process 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe 3760 AcroRd32.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
AcroRd32.exeRdrCEF.exedescription pid process target process PID 3760 wrote to memory of 2372 3760 AcroRd32.exe RdrCEF.exe PID 3760 wrote to memory of 2372 3760 AcroRd32.exe RdrCEF.exe PID 3760 wrote to memory of 2372 3760 AcroRd32.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2792 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe PID 2372 wrote to memory of 2100 2372 RdrCEF.exe RdrCEF.exe
Processes
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C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Bonus Letter 2024 for Bander - 5173.pdf"1⤵
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3760 -
C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=165140432⤵
- Suspicious use of WriteProcessMemory
PID:2372 -
C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=A4B4397F4D6AA933217B733335CB944A --mojo-platform-channel-handle=1756 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:2792
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C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=6368948B49CC3EA8AAEFC69A70438400 --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=6368948B49CC3EA8AAEFC69A70438400 --renderer-client-id=2 --mojo-platform-channel-handle=1768 --allow-no-sandbox-job /prefetch:13⤵PID:2100
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C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=D3CEC5CEE5F6357384C746EF994262ED --mojo-platform-channel-handle=2344 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:3728
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C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=DACB288401B2439D9BD475457491D358 --mojo-platform-channel-handle=2484 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:3232
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C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=7FC05FE3FC8E0F30C96D1A6A0CCAA4BE --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=7FC05FE3FC8E0F30C96D1A6A0CCAA4BE --renderer-client-id=6 --mojo-platform-channel-handle=2540 --allow-no-sandbox-job /prefetch:13⤵PID:1864
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C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=044654AF04AC64ED6936BC9B0C19CD6A --mojo-platform-channel-handle=1864 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:864
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
64KB
MD551e6456d66e1761d4c4d1559fb3fe252
SHA1d767dd0536d4bbcf8bcb19554d21b9bf074ee8e9
SHA256bd605707dc4aa47ce36243960e5f0ec0a9a33fa92e23a7823013ebbd8b57784e
SHA512e8663dedba78187cfb98a0e8c96fa73418fa636f41194e77b957e4b2abad066f5e65d8cbe0d2573ff5d4e7e22c123f2551cb7df671ed2c7dc8366b34c57641c4
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Filesize
36KB
MD5b30d3becc8731792523d599d949e63f5
SHA119350257e42d7aee17fb3bf139a9d3adb330fad4
SHA256b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
SHA512523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e
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Filesize
56KB
MD5752a1f26b18748311b691c7d8fc20633
SHA1c1f8e83eebc1cc1e9b88c773338eb09ff82ab862
SHA256111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
SHA512a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5