Analysis
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max time kernel
141s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
05/09/2024, 19:51
Static task
static1
Behavioral task
behavioral1
Sample
STEM after scholl program 2024.pdf
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
STEM after scholl program 2024.pdf
Resource
win10v2004-20240802-en
General
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Target
STEM after scholl program 2024.pdf
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Size
1.3MB
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MD5
27ff22bc79b670730f117398e44fea1d
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SHA1
e693afdf0d4cbf5cde488c79b43c8744b4623a1e
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SHA256
4d66f34d693315d8c6eebb868c0d99ec2ed57f2d8269e42c60b1f9afeb4167d9
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SHA512
a9d83cd54865313da64dca53ab53c2ba82c69ee4ac9b56f8314771bc8de95638bb800d3545ed4bd68cda364becf3eb7ad0083d24b9e18d99982346219d8c16f5
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SSDEEP
24576:PLOUy9d1pkO8lObR3F0ztJWUf/j+nML252tNdtt/6petxb1VC2K4OsM:JkdrkO8QbR3qhcDn32tNdtMI585sM
Malware Config
Signatures
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System Location Discovery: System Language Discovery 1 TTPs 8 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 RdrCEF.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language AcroRd32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RdrCEF.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RdrCEF.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RdrCEF.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RdrCEF.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RdrCEF.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RdrCEF.exe -
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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION AcroRd32.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
pid Process 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4868 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
pid Process 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe 4868 AcroRd32.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 4868 wrote to memory of 1572 4868 AcroRd32.exe 91 PID 4868 wrote to memory of 1572 4868 AcroRd32.exe 91 PID 4868 wrote to memory of 1572 4868 AcroRd32.exe 91 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 2736 1572 RdrCEF.exe 92 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93 PID 1572 wrote to memory of 4456 1572 RdrCEF.exe 93
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\STEM after scholl program 2024.pdf"1⤵
- System Location Discovery: System Language Discovery
- 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:4868 -
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⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1572 -
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=7A339315FD3BA768B7D7945038E5DA76 --mojo-platform-channel-handle=1740 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
- System Location Discovery: System Language Discovery
PID:2736
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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=99234EE6DA96E51AE306855B1C11077C --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=99234EE6DA96E51AE306855B1C11077C --renderer-client-id=2 --mojo-platform-channel-handle=1752 --allow-no-sandbox-job /prefetch:13⤵
- System Location Discovery: System Language Discovery
PID:4456
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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=34A875314437469E66829452C7AE28C7 --mojo-platform-channel-handle=2416 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
- System Location Discovery: System Language Discovery
PID:3868
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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=B59B09E82CF17D3DC04899F2C4A9EFAE --mojo-platform-channel-handle=1864 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
- System Location Discovery: System Language Discovery
PID:4220
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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=266DA63707774C13E20F1F009955AF1B --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=266DA63707774C13E20F1F009955AF1B --renderer-client-id=6 --mojo-platform-channel-handle=1852 --allow-no-sandbox-job /prefetch:13⤵
- System Location Discovery: System Language Discovery
PID:2728
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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=93B760DEC25943B1E7D6C2440DA08404 --mojo-platform-channel-handle=2916 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
- System Location Discovery: System Language Discovery
PID:4176
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C:\Windows\System32\CompPkgSrv.exeC:\Windows\System32\CompPkgSrv.exe -Embedding1⤵PID:1612
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
64KB
MD5e857539ae996960225258ccdec8b8143
SHA1f4a35bfda0980960ea27856c79a31b6fe4433fc8
SHA256fb4996b5df24a98a96f0f16b9456e9b5dda12879c836efc98fa22773175226db
SHA512f421b2db57c37e734fbfa3020bb9665727c1e9e616e678f1b1f956bc6f532d73a42e8b5181dc7b5c726f26404507e474ecb0f1b7d6d74eedeb69b31f6b678c7f
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Filesize
36KB
MD5b30d3becc8731792523d599d949e63f5
SHA119350257e42d7aee17fb3bf139a9d3adb330fad4
SHA256b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
SHA512523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e
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Filesize
56KB
MD5752a1f26b18748311b691c7d8fc20633
SHA1c1f8e83eebc1cc1e9b88c773338eb09ff82ab862
SHA256111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
SHA512a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5