Analysis
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max time kernel
121s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
14-10-2022 17:45
Static task
static1
Behavioral task
behavioral1
Sample
NisSrv.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
NisSrv.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral3
Sample
circular_29092022.pdf
Resource
win7-20220812-en
Behavioral task
behavioral4
Sample
circular_29092022.pdf
Resource
win10v2004-20220901-en
Behavioral task
behavioral5
Sample
circular_29092022.pdf.lnk
Resource
win7-20220901-en
General
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Target
circular_29092022.pdf
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Size
116KB
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MD5
c380b1ebfbfd0e56943e8ec8c152c6cb
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SHA1
7e4902014f9f120b3d0af38334373ce50a9f8aef
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SHA256
24d66e168fd7712944e3a9ddf9589299a7f85d079859fa61ad9cdd90e7ef1d80
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SHA512
5cd095b2a4d0bacf2a6327284d4cb8dc3e1349daa2bdadb9a189f19ded66e26fd7cfcd92a77df816cd8e34ed4b4d5280e77fc5e5779bc6270d09343cb7f01991
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SSDEEP
3072:eQoleWGZQ5lpmmeS5tBDbJbY35OiJ9Hq+rvbB:oo8heS5tZJbYJl4+J
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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION AcroRd32.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
Processes:
AcroRd32.exepid process 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
AcroRd32.exepid process 2056 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
AcroRd32.exepid process 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe 2056 AcroRd32.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
AcroRd32.exeRdrCEF.exedescription pid process target process PID 2056 wrote to memory of 3076 2056 AcroRd32.exe RdrCEF.exe PID 2056 wrote to memory of 3076 2056 AcroRd32.exe RdrCEF.exe PID 2056 wrote to memory of 3076 2056 AcroRd32.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 4892 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 RdrCEF.exe RdrCEF.exe PID 3076 wrote to memory of 1744 3076 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\circular_29092022.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=11F7A1A08BDB19DBB207EFE97B363F9E --mojo-platform-channel-handle=1752 --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=D18D6CCD9A4908FC4F1DA299CFEA3AF3 --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=D18D6CCD9A4908FC4F1DA299CFEA3AF3 --renderer-client-id=2 --mojo-platform-channel-handle=1768 --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=67620242BA5379C178D15127D6C070EF --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=67620242BA5379C178D15127D6C070EF --renderer-client-id=4 --mojo-platform-channel-handle=2176 --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=5E97950CBFA2298D05E518F2243F9E54 --mojo-platform-channel-handle=2428 --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=DEEE219439CAD380A5C7B0485A284CA5 --mojo-platform-channel-handle=2680 --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=EE7CBD24CE4C95C1BC5E6327A80E4CD6 --mojo-platform-channel-handle=2512 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
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C:\Windows\System32\CompPkgSrv.exeC:\Windows\System32\CompPkgSrv.exe -Embedding1⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1008-150-0x0000000000000000-mapping.dmp
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memory/1744-137-0x0000000000000000-mapping.dmp
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memory/2052-142-0x0000000000000000-mapping.dmp
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memory/2276-147-0x0000000000000000-mapping.dmp
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memory/3076-132-0x0000000000000000-mapping.dmp
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memory/4008-153-0x0000000000000000-mapping.dmp
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memory/4892-134-0x0000000000000000-mapping.dmp