Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
31-01-2023 20:34
Static task
static1
General
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Target
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe
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Size
4.1MB
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MD5
c05b97286ff837534731f8b6146311fe
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SHA1
0a40d3cd32790948ae523339b2c9351d909fc78b
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SHA256
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158
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SHA512
58183a83cfc06083ed631a40511dea6dea5ff6206fbc31c56a316828bd55868d2ed67cf48e18aca64366455cc224cf72a6967622ca1d642f0f34060f76075118
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SSDEEP
98304:40GP4TOarwWUQlPxYjIYoNuaXzNeEGaHLoxfgoz:pGP4TOarwlQl5Yj7aXzNeEGKoFd
Malware Config
Signatures
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Processes:
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe -
Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 4900 csrss.exe 312 injector.exe 3808 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/3808-426-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Processes:
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe = "0" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.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\"" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.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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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Drops file in Windows directory 2 IoCs
Processes:
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exedescription ioc process File opened for modification C:\Windows\rss f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe File created C:\Windows\rss\csrss.exe f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 1432 schtasks.exe 1224 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.execsrss.exenetsh.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.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" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control\NetTrace netsh.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.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" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.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" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control netsh.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exef3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exeinjector.execsrss.exepid process 3468 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3468 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 4900 csrss.exe 4900 csrss.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 4900 csrss.exe 4900 csrss.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe 312 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.execsrss.exedescription pid process Token: SeDebugPrivilege 3468 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Token: SeImpersonatePrivilege 3468 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe Token: SeSystemEnvironmentPrivilege 4900 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.execmd.execsrss.exedescription pid process target process PID 3036 wrote to memory of 3208 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe cmd.exe PID 3036 wrote to memory of 3208 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe cmd.exe PID 3208 wrote to memory of 5024 3208 cmd.exe netsh.exe PID 3208 wrote to memory of 5024 3208 cmd.exe netsh.exe PID 3036 wrote to memory of 4900 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe csrss.exe PID 3036 wrote to memory of 4900 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe csrss.exe PID 3036 wrote to memory of 4900 3036 f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe csrss.exe PID 4900 wrote to memory of 312 4900 csrss.exe injector.exe PID 4900 wrote to memory of 312 4900 csrss.exe injector.exe PID 4900 wrote to memory of 3808 4900 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4900 wrote to memory of 3808 4900 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4900 wrote to memory of 3808 4900 csrss.exe f801950a962ddba14caaa44bf084b55c.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe"C:\Users\Admin\AppData\Local\Temp\f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.exe"C:\Users\Admin\AppData\Local\Temp\f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158.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
- Modifies data under HKEY_USERS
- 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
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\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
MD5c05b97286ff837534731f8b6146311fe
SHA10a40d3cd32790948ae523339b2c9351d909fc78b
SHA256f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158
SHA51258183a83cfc06083ed631a40511dea6dea5ff6206fbc31c56a316828bd55868d2ed67cf48e18aca64366455cc224cf72a6967622ca1d642f0f34060f76075118
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5c05b97286ff837534731f8b6146311fe
SHA10a40d3cd32790948ae523339b2c9351d909fc78b
SHA256f3edae379d1bcd3c9a61b57904b8c12c6d5c20c7e70e099afba620c9d7cba158
SHA51258183a83cfc06083ed631a40511dea6dea5ff6206fbc31c56a316828bd55868d2ed67cf48e18aca64366455cc224cf72a6967622ca1d642f0f34060f76075118
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memory/312-379-0x0000000000000000-mapping.dmp
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memory/3036-299-0x0000000002900000-0x0000000002CF4000-memory.dmpFilesize
4.0MB
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memory/3036-300-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3036-306-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3208-297-0x0000000000000000-mapping.dmp
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memory/3468-157-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-163-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-126-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-128-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-129-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-130-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-131-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-132-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-133-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-134-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-135-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-136-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-138-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-139-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-137-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-141-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-142-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-143-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-144-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-145-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-146-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-147-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-148-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-149-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-150-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-151-0x0000000002BD0000-0x0000000002FBF000-memory.dmpFilesize
3.9MB
-
memory/3468-152-0x0000000002FC0000-0x0000000003837000-memory.dmpFilesize
8.5MB
-
memory/3468-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/3468-154-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-155-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-156-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-125-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-158-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-159-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-160-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-161-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-162-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-127-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-164-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-165-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-166-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-167-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-168-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-169-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-170-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-171-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-172-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-173-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-174-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-175-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-176-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-177-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-178-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-179-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-181-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-180-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-182-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-183-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-185-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-184-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
-
memory/3468-186-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
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memory/3468-124-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
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memory/3468-245-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3468-119-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
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memory/3468-120-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
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memory/3468-121-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
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memory/3468-123-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
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memory/3468-122-0x0000000077740000-0x00000000778CE000-memory.dmpFilesize
1.6MB
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memory/3808-416-0x0000000000000000-mapping.dmp
-
memory/3808-426-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4900-363-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4900-385-0x0000000002F00000-0x00000000032EA000-memory.dmpFilesize
3.9MB
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memory/4900-386-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4900-358-0x0000000002F00000-0x00000000032EA000-memory.dmpFilesize
3.9MB
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memory/4900-302-0x0000000000000000-mapping.dmp
-
memory/5024-298-0x0000000000000000-mapping.dmp