Analysis
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max time kernel
150s -
max time network
148s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
22-09-2022 22:39
Static task
static1
General
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Target
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe
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Size
4.1MB
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MD5
80e11618e06af3bc5174504d88697964
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SHA1
dd2579f0dd96db100bd63846de65f1127c4ce64b
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SHA256
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15
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SHA512
a06bf05ba5eefb60bf915e14a11c8572dc3e52a4e7c968699d481d75e477b3e87f6a5161e1a040cdc5a2c202a215e96782ddef1bf4c5a1dc5d28a1a026106234
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SSDEEP
98304:qvs7ybjG+jwFrjytQ7wr9WTtAISMAsYDLM5Sv:Is7ypMEtbrO2TnsGLM5W
Malware Config
Signatures
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Processes:
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 4696 csrss.exe 1800 injector.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Processes:
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Windows directory 2 IoCs
Processes:
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exedescription ioc process File opened for modification C:\Windows\rss a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe File created C:\Windows\rss\csrss.exe a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies data under HKEY_USERS 64 IoCs
Processes:
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exea5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exeinjector.execsrss.exepid process 2664 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 2664 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 4696 csrss.exe 4696 csrss.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 4696 csrss.exe 4696 csrss.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe 1800 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.execsrss.exedescription pid process Token: SeDebugPrivilege 2664 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Token: SeImpersonatePrivilege 2664 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe Token: SeSystemEnvironmentPrivilege 4696 csrss.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.execmd.execsrss.exedescription pid process target process PID 4548 wrote to memory of 4308 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe cmd.exe PID 4548 wrote to memory of 4308 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe cmd.exe PID 4308 wrote to memory of 4748 4308 cmd.exe netsh.exe PID 4308 wrote to memory of 4748 4308 cmd.exe netsh.exe PID 4548 wrote to memory of 4696 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe csrss.exe PID 4548 wrote to memory of 4696 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe csrss.exe PID 4548 wrote to memory of 4696 4548 a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe csrss.exe PID 4696 wrote to memory of 1800 4696 csrss.exe injector.exe PID 4696 wrote to memory of 1800 4696 csrss.exe injector.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe"C:\Users\Admin\AppData\Local\Temp\a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe"C:\Users\Admin\AppData\Local\Temp\a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15.exe"2⤵
- Windows security bypass
- Windows security modification
- Adds Run key to start application
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD580e11618e06af3bc5174504d88697964
SHA1dd2579f0dd96db100bd63846de65f1127c4ce64b
SHA256a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15
SHA512a06bf05ba5eefb60bf915e14a11c8572dc3e52a4e7c968699d481d75e477b3e87f6a5161e1a040cdc5a2c202a215e96782ddef1bf4c5a1dc5d28a1a026106234
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD580e11618e06af3bc5174504d88697964
SHA1dd2579f0dd96db100bd63846de65f1127c4ce64b
SHA256a5b42fb7e1e407aee76790eb28e690ccd2d8855cb359941bed0581a235e52d15
SHA512a06bf05ba5eefb60bf915e14a11c8572dc3e52a4e7c968699d481d75e477b3e87f6a5161e1a040cdc5a2c202a215e96782ddef1bf4c5a1dc5d28a1a026106234
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memory/1800-380-0x0000000000000000-mapping.dmp
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memory/2664-159-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
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memory/2664-157-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
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memory/2664-124-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
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memory/2664-125-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-126-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-127-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-128-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-129-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-130-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-131-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-132-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-133-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-134-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-135-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-136-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-137-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-138-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-139-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-140-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-141-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-142-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-143-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-144-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-146-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-147-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-148-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-149-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-151-0x0000000002920000-0x0000000002D15000-memory.dmpFilesize
4.0MB
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memory/2664-150-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-161-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-152-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-154-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/2664-156-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-155-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-163-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-122-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-160-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-158-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-153-0x0000000002D20000-0x0000000003596000-memory.dmpFilesize
8.5MB
-
memory/2664-120-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-123-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-164-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-165-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-166-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-167-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-168-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-169-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-170-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-171-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-172-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-173-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-175-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-177-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-180-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-181-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-183-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-185-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-187-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-186-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-184-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-182-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-179-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-178-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-176-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-174-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-249-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/2664-162-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/2664-121-0x0000000077730000-0x00000000778BE000-memory.dmpFilesize
1.6MB
-
memory/4308-297-0x0000000000000000-mapping.dmp
-
memory/4548-298-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4548-310-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4548-296-0x00000000029B0000-0x0000000002DA6000-memory.dmpFilesize
4.0MB
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memory/4696-301-0x0000000000000000-mapping.dmp
-
memory/4696-332-0x0000000003000000-0x00000000033EA000-memory.dmpFilesize
3.9MB
-
memory/4696-335-0x00000000033F0000-0x0000000003C66000-memory.dmpFilesize
8.5MB
-
memory/4696-357-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4696-384-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4748-299-0x0000000000000000-mapping.dmp