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Analysis
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max time kernel
142s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
04/10/2023, 14:58
Behavioral task
behavioral1
Sample
China-Linked Cyber Actors Hide in Router Firmware.pdf
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
China-Linked Cyber Actors Hide in Router Firmware.pdf
Resource
win10v2004-20230915-en
General
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Target
China-Linked Cyber Actors Hide in Router Firmware.pdf
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Size
651KB
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MD5
25a175cc62c22b8246f2c7f7f2230757
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SHA1
e2c8bde5a7ba2ea24174ff309e0647525bea1605
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SHA256
c98a3d79bda15c171adfc6d364937f9d64bde017df5282e7f99bc56ba93fcbfe
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SHA512
a31aa76d35af21d3429bd3042037fdc7991568ce887e133f66397ee949a5fabfa426e4192a74b4b2fceafc5c55a220b642d05a059217860b8a76cdfdc1a96824
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SSDEEP
12288:HOvoQ/p22rj2Oh6z+U6Rlr9pr45X7COVjNI8Ld05y0NuIMiRoqmZW3dw/wn+5VOZ:HOvJBF2OEyDjydtdq2qmENl+nOojCBfJ
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.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 AcroRd32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz AcroRd32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION AcroRd32.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
pid Process 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeManageVolumePrivilege 3588 svchost.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2424 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe 2424 AcroRd32.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2424 wrote to memory of 3320 2424 AcroRd32.exe 90 PID 2424 wrote to memory of 3320 2424 AcroRd32.exe 90 PID 2424 wrote to memory of 3320 2424 AcroRd32.exe 90 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2264 3320 RdrCEF.exe 91 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92 PID 3320 wrote to memory of 2828 3320 RdrCEF.exe 92
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\China-Linked Cyber Actors Hide in Router Firmware.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:2424 -
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:3320 -
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=DEEEB5211C9F491E32FBB07C24F9B35A --mojo-platform-channel-handle=1740 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:2264
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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=49389E08F543D31E5E17DFD7B06D355B --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=49389E08F543D31E5E17DFD7B06D355B --renderer-client-id=2 --mojo-platform-channel-handle=1752 --allow-no-sandbox-job /prefetch:13⤵PID:2828
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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=18169CF0411B74B0B8570B930DDF225C --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=18169CF0411B74B0B8570B930DDF225C --renderer-client-id=4 --mojo-platform-channel-handle=2312 --allow-no-sandbox-job /prefetch:13⤵PID:1364
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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=73B57347B31FD2448905662C5AD5BBD4 --mojo-platform-channel-handle=2320 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:3552
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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=34CD34DB0A03624ECB72FFA160C1BC36 --mojo-platform-channel-handle=2508 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:2684
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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=40D66CB3015839FED5C434E63C7A625B --mojo-platform-channel-handle=1856 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:4860
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C:\Windows\System32\CompPkgSrv.exeC:\Windows\System32\CompPkgSrv.exe -Embedding1⤵PID:4836
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵PID:4784
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3588
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD59ffefea2320a2f88af3dbc8add824ef1
SHA106a25e4147db1ddb73751d479633b13f1f6b984e
SHA2560ace6386d414f9383fc273bb20340fb47aae951164f585b4c03a330516112e6a
SHA5124e2570051f00c48fad10a932da3057bab1c76ee28757f12d406be2bc11e7ff5ac7b96b03e18967ae3b635a3d316f16858f04ee2519ea5c71c22e748feb934503
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Filesize
36KB
MD5b30d3becc8731792523d599d949e63f5
SHA119350257e42d7aee17fb3bf139a9d3adb330fad4
SHA256b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
SHA512523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e
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Filesize
56KB
MD5752a1f26b18748311b691c7d8fc20633
SHA1c1f8e83eebc1cc1e9b88c773338eb09ff82ab862
SHA256111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
SHA512a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5
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Filesize
16KB
MD58cbb9d3fb641e1bec8a6ef66e2fc3a42
SHA183f10fd51637bf219e11ee9d6a637a3fd7597d0e
SHA25636d0595859557920ba9336e28fb9164a3d043ee75dc83d2eaddab0851b8b37c6
SHA512ff92ffba02f6bed0022dfc21287334128251c718ea4868e5c5401a5f88e285054f5ddad018ae9caf52d5d49f5fdf3c95a57af5b3780ca13b1bc0c6efe942bdad