Analysis
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max time kernel
125s -
max time network
145s -
platform
windows10_x64 -
resource
win10-en-20210920 -
submitted
14-10-2021 05:07
Static task
static1
Behavioral task
behavioral1
Sample
BRIEF.pdf
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
BRIEF.pdf
Resource
win10-en-20210920
windows10_x64
0 signatures
0 seconds
General
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Target
BRIEF.pdf
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Size
238KB
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MD5
d9eb117180673e30f6e56350ec72de59
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SHA1
78392960cc53f8df04ffe856b271662ad2a89e00
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SHA256
8a5fb3b82134ca2b6e924355ff8673dca2d15cbc765fd5744a9a99df7b0a9b79
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SHA512
26723e50cf346d4e0ed45b9b38df143a75754122c1c04eaeb690117cd78d61b041f475a3b2e8f95364d107b5485212027cc19612ab58df5fe2c61289466f4d4e
Score
1/10
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 opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 AcroRd32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz AcroRd32.exe -
Processes:
AcroRd32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION AcroRd32.exe -
Suspicious behavior: EnumeratesProcesses 18 IoCs
Processes:
AcroRd32.exepid process 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
AcroRd32.exepid process 3572 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
AcroRd32.exepid process 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe 3572 AcroRd32.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
AcroRd32.exeRdrCEF.exedescription pid process target process PID 3572 wrote to memory of 4432 3572 AcroRd32.exe RdrCEF.exe PID 3572 wrote to memory of 4432 3572 AcroRd32.exe RdrCEF.exe PID 3572 wrote to memory of 4432 3572 AcroRd32.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3204 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 RdrCEF.exe RdrCEF.exe PID 4432 wrote to memory of 3900 4432 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\BRIEF.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
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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
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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=22DE5848B80AC708AAF2EA2F991BE240 --mojo-platform-channel-handle=1624 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
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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=1912E1D70D379F0CF3C187433523DE6F --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=1 --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=1912E1D70D379F0CF3C187433523DE6F --renderer-client-id=2 --mojo-platform-channel-handle=1636 --allow-no-sandbox-job /prefetch:13⤵
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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=58D202E1618FDF7D0547872C90BC1783 --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=1 --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=58D202E1618FDF7D0547872C90BC1783 --renderer-client-id=4 --mojo-platform-channel-handle=1948 --allow-no-sandbox-job /prefetch:13⤵
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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=55AE6E88F6C8C9509505D936B0E394F9 --mojo-platform-channel-handle=2584 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
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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=06996B129D2814B7E0039812BBEE3543 --mojo-platform-channel-handle=1608 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
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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=57BF9CDD7A749B837555088884D0704A --mojo-platform-channel-handle=1876 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/640-126-0x0000000077C52000-0x0000000077C53000-memory.dmpFilesize
4KB
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memory/640-128-0x0000000000000000-mapping.dmp
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memory/640-127-0x0000000001409000-0x000000000140A000-memory.dmpFilesize
4KB
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memory/1400-134-0x0000000000000000-mapping.dmp
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memory/1400-132-0x0000000077C52000-0x0000000077C53000-memory.dmpFilesize
4KB
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memory/1400-133-0x0000000000633000-0x0000000000634000-memory.dmpFilesize
4KB
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memory/1888-136-0x0000000077C52000-0x0000000077C53000-memory.dmpFilesize
4KB
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memory/1888-138-0x0000000000000000-mapping.dmp
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memory/1888-137-0x00000000015A0000-0x00000000015A1000-memory.dmpFilesize
4KB
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memory/2784-142-0x0000000000000000-mapping.dmp
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memory/2784-141-0x00000000011E2000-0x00000000011E3000-memory.dmpFilesize
4KB
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memory/2784-140-0x0000000077C52000-0x0000000077C53000-memory.dmpFilesize
4KB
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memory/3204-118-0x0000000000000000-mapping.dmp
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memory/3204-117-0x00000000007E9000-0x00000000007EA000-memory.dmpFilesize
4KB
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memory/3204-116-0x0000000077C52000-0x0000000077C53000-memory.dmpFilesize
4KB
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memory/3204-121-0x0000000000610000-0x0000000000611000-memory.dmpFilesize
4KB
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memory/3900-124-0x00000000001A0000-0x00000000001A1000-memory.dmpFilesize
4KB
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memory/3900-119-0x0000000077C52000-0x0000000077C53000-memory.dmpFilesize
4KB
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memory/3900-122-0x0000000000000000-mapping.dmp
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memory/3900-120-0x0000000000862000-0x0000000000863000-memory.dmpFilesize
4KB
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memory/3900-125-0x00000000001B0000-0x00000000001B1000-memory.dmpFilesize
4KB
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memory/4432-115-0x0000000000000000-mapping.dmp