Analysis
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max time kernel
147s -
max time network
147s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
02-02-2023 13:52
Static task
static1
General
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Target
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe
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Size
4.1MB
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MD5
a8f59c9814b70f8ee0ca2c30c0112afb
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SHA1
24f1618d466d601b3d0c7ab1b41411d100a0e3bd
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SHA256
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f
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SHA512
414b8138a08189a4e8552e5e52a36b005cd4dbdefffbb267568106080a857a5f8e502302f2a9dfaa111d701e521d3b09ca15457f4e8ecd483187feaedc9dd3d5
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SSDEEP
98304:v8+tOgQNJoxnPTtSIZTCNfXKCvPF8rRb7pumT7qb7g:0+tcNJoRPT1ZTCldHWnpumTsg
Malware Config
Signatures
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Processes:
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe -
Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 4728 csrss.exe 2252 injector.exe 4944 f801950a962ddba14caaa44bf084b55c.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe upx C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe upx behavioral1/memory/4944-423-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/4944-466-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/4944-468-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Processes:
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe = "0" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\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:
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exedescription ioc process File opened for modification C:\Windows\rss 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe File created C:\Windows\rss\csrss.exe 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.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:
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exenetsh.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.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" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1842 = "Russia TZ 4 Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.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" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet netsh.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.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" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2841 = "Saratov Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exeinjector.execsrss.exepid process 4936 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4936 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 4728 csrss.exe 4728 csrss.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 4728 csrss.exe 4728 csrss.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.execsrss.exedescription pid process Token: SeDebugPrivilege 4936 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Token: SeImpersonatePrivilege 4936 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe Token: SeSystemEnvironmentPrivilege 4728 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.execmd.execsrss.exedescription pid process target process PID 4212 wrote to memory of 3152 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe cmd.exe PID 4212 wrote to memory of 3152 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe cmd.exe PID 3152 wrote to memory of 4684 3152 cmd.exe netsh.exe PID 3152 wrote to memory of 4684 3152 cmd.exe netsh.exe PID 4212 wrote to memory of 4728 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe csrss.exe PID 4212 wrote to memory of 4728 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe csrss.exe PID 4212 wrote to memory of 4728 4212 221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe csrss.exe PID 4728 wrote to memory of 2252 4728 csrss.exe injector.exe PID 4728 wrote to memory of 2252 4728 csrss.exe injector.exe PID 4728 wrote to memory of 4944 4728 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4728 wrote to memory of 4944 4728 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4728 wrote to memory of 4944 4728 csrss.exe f801950a962ddba14caaa44bf084b55c.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe"C:\Users\Admin\AppData\Local\Temp\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe"C:\Users\Admin\AppData\Local\Temp\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.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
- Modifies data under HKEY_USERS
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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)
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "csrss" /f5⤵
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "ScheduledUpdate" /f5⤵
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\f801950a962ddba14caaa44bf084b55c.exeFilesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeFilesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dllFilesize
99KB
MD509031a062610d77d685c9934318b4170
SHA1880f744184e7774f3d14c1bb857e21cc7fe89a6d
SHA256778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd
SHA5129a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27
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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
MD5a8f59c9814b70f8ee0ca2c30c0112afb
SHA124f1618d466d601b3d0c7ab1b41411d100a0e3bd
SHA256221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f
SHA512414b8138a08189a4e8552e5e52a36b005cd4dbdefffbb267568106080a857a5f8e502302f2a9dfaa111d701e521d3b09ca15457f4e8ecd483187feaedc9dd3d5
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5a8f59c9814b70f8ee0ca2c30c0112afb
SHA124f1618d466d601b3d0c7ab1b41411d100a0e3bd
SHA256221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f
SHA512414b8138a08189a4e8552e5e52a36b005cd4dbdefffbb267568106080a857a5f8e502302f2a9dfaa111d701e521d3b09ca15457f4e8ecd483187feaedc9dd3d5
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memory/2252-374-0x0000000000000000-mapping.dmp
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memory/3152-294-0x0000000000000000-mapping.dmp
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memory/4212-301-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4212-265-0x00000000029A0000-0x0000000002D8B000-memory.dmpFilesize
3.9MB
-
memory/4212-296-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4684-295-0x0000000000000000-mapping.dmp
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memory/4728-367-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4728-366-0x0000000003000000-0x00000000033EA000-memory.dmpFilesize
3.9MB
-
memory/4728-448-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4728-380-0x0000000003000000-0x00000000033EA000-memory.dmpFilesize
3.9MB
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memory/4728-298-0x0000000000000000-mapping.dmp
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memory/4728-381-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4936-131-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-173-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-139-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-137-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-116-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-141-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-143-0x0000000002AA0000-0x0000000002E92000-memory.dmpFilesize
3.9MB
-
memory/4936-142-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-145-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-144-0x0000000002EA0000-0x0000000003717000-memory.dmpFilesize
8.5MB
-
memory/4936-146-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-147-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-148-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-149-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-150-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-151-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4936-152-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-153-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-154-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-155-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-156-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-157-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-158-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-159-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-160-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-161-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-162-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-163-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-164-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-165-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-166-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-167-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-168-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-169-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-170-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-171-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-172-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-138-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-174-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-175-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-176-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-177-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-178-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-179-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-180-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-181-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-182-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-183-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-243-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4936-246-0x0000000002EA0000-0x0000000003717000-memory.dmpFilesize
8.5MB
-
memory/4936-136-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-135-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-134-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-133-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-132-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-130-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-129-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-128-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-127-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-126-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-125-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-124-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-123-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-122-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-121-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-120-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-117-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-119-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4936-118-0x0000000077520000-0x00000000776AE000-memory.dmpFilesize
1.6MB
-
memory/4944-423-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
-
memory/4944-466-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4944-408-0x0000000000000000-mapping.dmp
-
memory/4944-468-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB