Analysis
- max time kernel
18s - max time network
33s - platform
windows10-2004_x64 - resource
win10v2004-20240319-en - resource tags
- submitted
04/04/2024, 11:03
General
- Target 2024-04-04_768c13817af3052eab69d57c33a14c26_ryuk.exe
- Size 3.2MB
- Sample240404-m5pdxadb2t
- SHA256 d942df91def152aea8fe59b064f7799feec123bd5275066c93d69811244a88c2
Malware Config
Signatures
- Executes dropped EXE 22 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Drops file in System32 directory 24 IoCs
- Drops file in Program Files directory 64 IoCs
- Drops file in Windows directory 2 IoCs
- Checks SCSI registry key(s) 3 TTPs 64 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Modifies data under HKEY_USERS 7 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious behavior: LoadsDriver 2 IoCs
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of FindShellTrayWindow 3 IoCs
- Suspicious use of WriteProcessMemory 64 IoCs
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-04_768c13817af3052eab69d57c33a14c26_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-04_768c13817af3052eab69d57c33a14c26_ryuk.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\2024-04-04_768c13817af3052eab69d57c33a14c26_ryuk.exeC:\Users\Admin\AppData\Local\Temp\2024-04-04_768c13817af3052eab69d57c33a14c26_ryuk.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=92.0.4515.131 --initial-client-data=0x2d4,0x2d8,0x2e4,0x2e0,0x2e8,0x140221ee0,0x140221ef0,0x140221f002⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --force-first-run2⤵
- Enumerates system info in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xfc,0x100,0x104,0xbc,0x108,0x7ff9b6f19758,0x7ff9b6f19768,0x7ff9b6f197783⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1664 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:23⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2052 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:83⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2128 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:83⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2912 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:13⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2920 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:13⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4544 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:13⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4948 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:83⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5296 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:83⤵
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C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe"C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe" --configure-user-settings --verbose-logging --system-level --force-configure-user-settings3⤵
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C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe"C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\Crashpad --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0x238,0x23c,0x240,0x214,0x244,0x7ff694977688,0x7ff694977698,0x7ff6949776a84⤵
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C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe"C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe" --system-level --verbose-logging --installerdata="C:\Program Files\Google\Chrome\Application\master_preferences" --create-shortcuts=1 --install-level=04⤵
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C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe"C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\Crashpad --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0x238,0x23c,0x240,0x214,0x244,0x7ff694977688,0x7ff694977698,0x7ff6949776a85⤵
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3684 --field-trial-handle=1932,i,13866309475090300383,8901973833545295732,131072 /prefetch:83⤵
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C:\Windows\System32\alg.exeC:\Windows\System32\alg.exe1⤵
- Executes dropped EXE
- Drops file in System32 directory
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C:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exeC:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exe1⤵
- Executes dropped EXE
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv1⤵
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C:\Windows\system32\fxssvc.exeC:\Windows\system32\fxssvc.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
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C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"1⤵
- Executes dropped EXE
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C:\Program Files (x86)\Microsoft\Edge\Application\122.0.2365.92\elevation_service.exe"C:\Program Files (x86)\Microsoft\Edge\Application\122.0.2365.92\elevation_service.exe"1⤵
- Executes dropped EXE
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C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"1⤵
- Executes dropped EXE
- Drops file in Program Files directory
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C:\Windows\System32\msdtc.exeC:\Windows\System32\msdtc.exe1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
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\??\c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE"c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE"1⤵
- Executes dropped EXE
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C:\Windows\system32\PerceptionSimulation\PerceptionSimulationService.exeC:\Windows\system32\PerceptionSimulation\PerceptionSimulationService.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWow64\perfhost.exeC:\Windows\SysWow64\perfhost.exe1⤵
- Executes dropped EXE
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C:\Windows\system32\locator.exeC:\Windows\system32\locator.exe1⤵
- Executes dropped EXE
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C:\Windows\System32\SensorDataService.exeC:\Windows\System32\SensorDataService.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
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C:\Windows\System32\snmptrap.exeC:\Windows\System32\snmptrap.exe1⤵
- Executes dropped EXE
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C:\Windows\system32\spectrum.exeC:\Windows\system32\spectrum.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
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C:\Windows\System32\OpenSSH\ssh-agent.exeC:\Windows\System32\OpenSSH\ssh-agent.exe1⤵
- Executes dropped EXE
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s SharedRealitySvc1⤵
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C:\Windows\system32\TieringEngineService.exeC:\Windows\system32\TieringEngineService.exe1⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\AgentService.exeC:\Windows\system32\AgentService.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Executes dropped EXE
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵
- Executes dropped EXE
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C:\Windows\system32\SearchIndexer.exeC:\Windows\system32\SearchIndexer.exe /Embedding1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\SearchProtocolHost.exe"C:\Windows\system32\SearchProtocolHost.exe" Global\UsGthrFltPipeMssGthrPipe1_ Global\UsGthrCtrlFltPipeMssGthrPipe1 1 -2147483646 "Software\Microsoft\Windows Search" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT; MS Search 4.0 Robot)" "C:\ProgramData\Microsoft\Search\Data\Temp\usgthrsvc" "DownLevelDaemon"2⤵
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C:\Windows\system32\SearchFilterHost.exe"C:\Windows\system32\SearchFilterHost.exe" 0 912 916 924 8192 920 8962⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
elevation_service.exe
maintenanceservice.exe
OSE.EXE
elevation_service.exe
c6b8681f-41ff-464e-8701-e91c6eeb611c.tmp
settings.dat
Google Profile.ico
TransportSecurity
Preferences
Preferences~RFe5798d5.TMP
Secure Preferences
Local State
Local State
persisted_first_party_sets.json
chrome_installer.log
chrome_installer.log
a16b89a24ab059c5.bin
perfhost.exe
AgentService.exe
DiagnosticsHub.StandardCollector.Service.exe
FXSSVC.exe
Locator.exe
ssh-agent.exe
PerceptionSimulationService.exe
SearchIndexer.exe
SensorDataService.exe
Spectrum.exe
TieringEngineService.exe
VSSVC.exe
alg.exe
msdtc.exe
snmptrap.exe
vds.exe
WmiApSrv.exe
wbengine.exe
settings.dat
memory/1284-182-0x0000000140000000-0x0000000140245000-memory.dmp
memory/1284-107-0x0000000000890000-0x00000000008F0000-memory.dmp
memory/1284-119-0x0000000000890000-0x00000000008F0000-memory.dmp
memory/1284-108-0x0000000140000000-0x0000000140245000-memory.dmp
memory/1284-117-0x0000000000890000-0x00000000008F0000-memory.dmp
memory/1376-72-0x0000000140000000-0x0000000140237000-memory.dmp
memory/1376-118-0x0000000140000000-0x0000000140237000-memory.dmp
memory/1376-96-0x0000000000D40000-0x0000000000DA0000-memory.dmp
memory/1376-73-0x0000000000D40000-0x0000000000DA0000-memory.dmp
memory/1376-111-0x0000000000D40000-0x0000000000DA0000-memory.dmp
memory/2400-47-0x0000000140000000-0x00000001400A9000-memory.dmp
memory/2400-141-0x0000000140000000-0x00000001400A9000-memory.dmp
memory/2400-46-0x00000000006B0000-0x0000000000710000-memory.dmp
memory/2400-54-0x00000000006B0000-0x0000000000710000-memory.dmp
memory/2860-34-0x0000000000740000-0x00000000007A0000-memory.dmp
memory/2860-123-0x0000000140000000-0x00000001400AA000-memory.dmp
memory/2860-25-0x0000000140000000-0x00000001400AA000-memory.dmp
memory/2860-22-0x0000000000740000-0x00000000007A0000-memory.dmp
memory/3020-13-0x00000000008D0000-0x0000000000930000-memory.dmp
memory/3020-12-0x0000000140000000-0x000000014033D000-memory.dmp
memory/3020-21-0x00000000008D0000-0x0000000000930000-memory.dmp
memory/3020-116-0x0000000140000000-0x000000014033D000-memory.dmp
memory/3932-39-0x0000000140000000-0x000000014033D000-memory.dmp
memory/3932-0-0x00000000020A0000-0x0000000002100000-memory.dmp
memory/3932-8-0x00000000020A0000-0x0000000002100000-memory.dmp
memory/3932-31-0x00000000020A0000-0x0000000002100000-memory.dmp
memory/3932-4-0x0000000140000000-0x000000014033D000-memory.dmp
memory/4140-201-0x0000000140000000-0x00000001401D7000-memory.dmp
memory/4140-296-0x0000000140000000-0x00000001401D7000-memory.dmp
memory/4140-216-0x0000000000770000-0x00000000007D0000-memory.dmp
memory/4828-59-0x0000000140000000-0x0000000140135000-memory.dmp
memory/4828-68-0x0000000000DA0000-0x0000000000E00000-memory.dmp
memory/4828-75-0x0000000000DA0000-0x0000000000E00000-memory.dmp
memory/4828-78-0x0000000140000000-0x0000000140135000-memory.dmp
memory/4828-60-0x0000000000DA0000-0x0000000000E00000-memory.dmp
memory/5224-124-0x0000000140000000-0x00000001400CA000-memory.dmp
memory/5224-125-0x0000000002270000-0x00000000022D0000-memory.dmp
memory/5224-132-0x0000000002270000-0x00000000022D0000-memory.dmp
memory/5224-138-0x0000000140000000-0x00000001400CA000-memory.dmp
memory/5224-139-0x0000000002270000-0x00000000022D0000-memory.dmp
memory/5284-255-0x0000000140000000-0x0000000140102000-memory.dmp
memory/5284-270-0x0000000000D50000-0x0000000000DB0000-memory.dmp
memory/5284-355-0x0000000140000000-0x0000000140102000-memory.dmp
memory/5452-215-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/5452-143-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/5452-151-0x0000000000CD0000-0x0000000000D30000-memory.dmp
memory/5476-221-0x0000000140000000-0x0000000140096000-memory.dmp
memory/5476-330-0x0000000140000000-0x0000000140096000-memory.dmp
memory/5476-231-0x0000000000730000-0x0000000000790000-memory.dmp
memory/5568-156-0x0000000140000000-0x00000001400CF000-memory.dmp
memory/5568-166-0x0000000000440000-0x00000000004A0000-memory.dmp
memory/5568-230-0x0000000140000000-0x00000001400CF000-memory.dmp
memory/5616-309-0x0000000000BD0000-0x0000000000C30000-memory.dmp
memory/5616-297-0x0000000140000000-0x00000001401C0000-memory.dmp
memory/5616-308-0x0000000140000000-0x00000001401C0000-memory.dmp
memory/5616-302-0x0000000000BD0000-0x0000000000C30000-memory.dmp
memory/5644-332-0x0000000140000000-0x0000000140147000-memory.dmp
memory/5644-338-0x0000000000BA0000-0x0000000000C00000-memory.dmp
memory/5664-342-0x0000000140000000-0x0000000140169000-memory.dmp
memory/5664-235-0x0000000140000000-0x0000000140169000-memory.dmp
memory/5664-244-0x0000000000740000-0x00000000007A0000-memory.dmp
memory/5700-351-0x0000000000780000-0x00000000007E0000-memory.dmp
memory/5700-343-0x0000000140000000-0x00000001401FC000-memory.dmp
memory/5732-170-0x0000000140000000-0x00000001400AB000-memory.dmp
memory/5732-242-0x0000000140000000-0x00000001400AB000-memory.dmp
memory/5732-179-0x0000000000500000-0x0000000000560000-memory.dmp
memory/5848-267-0x0000000000400000-0x0000000000497000-memory.dmp
memory/5848-184-0x0000000000400000-0x0000000000497000-memory.dmp
memory/5944-282-0x0000000140000000-0x0000000140095000-memory.dmp
memory/5944-189-0x0000000140000000-0x0000000140095000-memory.dmp
memory/5944-196-0x0000000000550000-0x00000000005B0000-memory.dmp
memory/6044-369-0x0000000140000000-0x00000001400E2000-memory.dmp
memory/6044-284-0x0000000140000000-0x00000001400E2000-memory.dmp
memory/6044-289-0x0000000000630000-0x0000000000690000-memory.dmp
memory/6236-358-0x0000000140000000-0x0000000140216000-memory.dmp
memory/6236-364-0x0000000000BF0000-0x0000000000C50000-memory.dmp