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Analysis
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max time kernel
148s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
26/12/2023, 09:25
Behavioral task
behavioral1
Sample
638e1c28c6aa1dcced5a84f25fd3b9c1.pdf
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
638e1c28c6aa1dcced5a84f25fd3b9c1.pdf
Resource
win10v2004-20231215-en
General
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Target
638e1c28c6aa1dcced5a84f25fd3b9c1.pdf
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Size
83KB
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MD5
638e1c28c6aa1dcced5a84f25fd3b9c1
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SHA1
c301b019cdd4c7d536d6db4bf9909e23b8a11b17
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SHA256
7d433630b27ce247c6932d95ce9386be597f52e05ebd569a702f44b46041206e
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SHA512
890a5419f77a65c38dfa822336c5e8ecec23f115073aa37a6369f3ec5d52b8567dc5599ab6777b41ad501889954c9b7017cfaa1ef6d1f6eb04e9ff4b9a78418b
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SSDEEP
1536:fIkvLt3Z9wp4dfxoeVnsp28YkSxbmtJ5DOjvB2uwev1RU79MdW6pOu26WHGxzHX6:Ap4df2zp28YkwbmtOjZ2mAMuu28xzX6
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-1-5-21-2398549320-3657759451-817663969-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION AcroRd32.exe -
Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1616 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
pid Process 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe 1616 AcroRd32.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1616 wrote to memory of 1952 1616 AcroRd32.exe 92 PID 1616 wrote to memory of 1952 1616 AcroRd32.exe 92 PID 1616 wrote to memory of 1952 1616 AcroRd32.exe 92 PID 1616 wrote to memory of 5108 1616 AcroRd32.exe 93 PID 1616 wrote to memory of 5108 1616 AcroRd32.exe 93 PID 1616 wrote to memory of 5108 1616 AcroRd32.exe 93 PID 1616 wrote to memory of 2924 1616 AcroRd32.exe 94 PID 1616 wrote to memory of 2924 1616 AcroRd32.exe 94 PID 1616 wrote to memory of 2924 1616 AcroRd32.exe 94 PID 1616 wrote to memory of 4588 1616 AcroRd32.exe 97 PID 1616 wrote to memory of 4588 1616 AcroRd32.exe 97 PID 1616 wrote to memory of 4588 1616 AcroRd32.exe 97 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 4608 4588 RdrCEF.exe 100 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101 PID 4588 wrote to memory of 2292 4588 RdrCEF.exe 101
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\638e1c28c6aa1dcced5a84f25fd3b9c1.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:1616 -
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⤵PID:1952
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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" --backgroundcolor=165140432⤵PID:5108
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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" --backgroundcolor=165140432⤵PID:2924
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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" --backgroundcolor=165140432⤵
- Suspicious use of WriteProcessMemory
PID:4588 -
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=DD037A02F69D3069C03CD52A045E2B7F --mojo-platform-channel-handle=1748 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:4608
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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=E09BF40BDF465A9287A045CBF8B35C3D --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=E09BF40BDF465A9287A045CBF8B35C3D --renderer-client-id=2 --mojo-platform-channel-handle=1756 --allow-no-sandbox-job /prefetch:13⤵PID:2292
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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=DAD3358466B40918F84FB250DAB8C477 --mojo-platform-channel-handle=2324 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:4048
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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=CD97BC95BF74EC14F02E9C6F8D153A9D --mojo-platform-channel-handle=1736 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:3016
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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=A71F2AC0B85F765D57177C9E62A48935 --mojo-platform-channel-handle=1956 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:2608
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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=6F7540D2F81CE20C3A940AB5AF3FEE78 --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=6F7540D2F81CE20C3A940AB5AF3FEE78 --renderer-client-id=7 --mojo-platform-channel-handle=2360 --allow-no-sandbox-job /prefetch:13⤵PID:1168
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C:\Windows\System32\CompPkgSrv.exeC:\Windows\System32\CompPkgSrv.exe -Embedding1⤵PID:4584
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD5315a17b47cfc4b14dde21aaf62c05554
SHA14e1b3dd0c0f0d7dfbd2723051ecfb3706315fad8
SHA256b816672ba4d1d80f4e23fd9c1fa5ddfa45c119687149576ae6049e332446d5d4
SHA51276b77022404946550b033bd06f28d4e7b6028b3f2530ad841ff68670812957418a6dce990d932fe82d7d9cba87ce63eae762c74f75b2aaeca10bdefe610aaafc
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Filesize
56KB
MD5752a1f26b18748311b691c7d8fc20633
SHA1c1f8e83eebc1cc1e9b88c773338eb09ff82ab862
SHA256111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
SHA512a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5
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Filesize
36KB
MD5b30d3becc8731792523d599d949e63f5
SHA119350257e42d7aee17fb3bf139a9d3adb330fad4
SHA256b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
SHA512523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e