Analysis
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max time kernel
133s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
02-02-2023 14:04
Static task
static1
General
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Target
f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe
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Size
4.0MB
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MD5
da9f8f49854878c38e95f93006bc7c19
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SHA1
8ae980378bd2c42a24f2a6b4be2f0695a97860d6
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SHA256
f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41
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SHA512
357ff9810a8f66ebe301daf160072a5ea11a2e579b79d0a34d1b66106facb9b7e9cd045dcf4dd41dd6302e39c31c094438c2c447911504e2d274e65963a7835f
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SSDEEP
98304:/ReGuQ8kHOnYvSKhKNLwCErpijireyuBRmsazK:/0GemSkKNLFnj2wBcm
Malware Config
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 6 IoCs
Processes:
svchost.exedescription pid process target process PID 4400 created 1780 4400 svchost.exe f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe PID 4400 created 4584 4400 svchost.exe csrss.exe PID 4400 created 4584 4400 svchost.exe csrss.exe PID 4400 created 4584 4400 svchost.exe csrss.exe PID 4400 created 5016 4400 svchost.exe f801950a962ddba14caaa44bf084b55c.exe PID 4400 created 5016 4400 svchost.exe f801950a962ddba14caaa44bf084b55c.exe -
Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 4584 csrss.exe 2644 injector.exe 5016 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/5016-157-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/5016-161-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/5016-163-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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:
f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exedescription ioc process File opened for modification C:\Windows\rss f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe File created C:\Windows\rss\csrss.exe f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.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 1792 schtasks.exe 3560 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.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" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.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" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.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" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.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,-2181 = "Astrakhan Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.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" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.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" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust 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" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exef5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exeinjector.execsrss.exepid process 1780 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 1780 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 4584 csrss.exe 4584 csrss.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 4584 csrss.exe 4584 csrss.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe 2644 injector.exe -
Suspicious use of AdjustPrivilegeToken 25 IoCs
Processes:
f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exesvchost.execsrss.exedescription pid process Token: SeDebugPrivilege 1780 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Token: SeImpersonatePrivilege 1780 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe Token: SeTcbPrivilege 4400 svchost.exe Token: SeTcbPrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeSystemEnvironmentPrivilege 4584 csrss.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe Token: SeBackupPrivilege 4400 svchost.exe Token: SeRestorePrivilege 4400 svchost.exe -
Suspicious use of WriteProcessMemory 25 IoCs
Processes:
svchost.exef5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.execmd.execsrss.exedescription pid process target process PID 4400 wrote to memory of 952 4400 svchost.exe f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe PID 4400 wrote to memory of 952 4400 svchost.exe f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe PID 4400 wrote to memory of 952 4400 svchost.exe f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe PID 952 wrote to memory of 4632 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe cmd.exe PID 952 wrote to memory of 4632 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe cmd.exe PID 4632 wrote to memory of 2780 4632 cmd.exe netsh.exe PID 4632 wrote to memory of 2780 4632 cmd.exe netsh.exe PID 952 wrote to memory of 4584 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe csrss.exe PID 952 wrote to memory of 4584 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe csrss.exe PID 952 wrote to memory of 4584 952 f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe csrss.exe PID 4400 wrote to memory of 1792 4400 svchost.exe schtasks.exe PID 4400 wrote to memory of 1792 4400 svchost.exe schtasks.exe PID 4400 wrote to memory of 3624 4400 svchost.exe schtasks.exe PID 4400 wrote to memory of 3624 4400 svchost.exe schtasks.exe PID 4584 wrote to memory of 2644 4584 csrss.exe injector.exe PID 4584 wrote to memory of 2644 4584 csrss.exe injector.exe PID 4400 wrote to memory of 3560 4400 svchost.exe schtasks.exe PID 4400 wrote to memory of 3560 4400 svchost.exe schtasks.exe PID 4584 wrote to memory of 5016 4584 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4584 wrote to memory of 5016 4584 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4584 wrote to memory of 5016 4584 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4400 wrote to memory of 572 4400 svchost.exe schtasks.exe PID 4400 wrote to memory of 572 4400 svchost.exe schtasks.exe PID 4400 wrote to memory of 4280 4400 svchost.exe schtasks.exe PID 4400 wrote to memory of 4280 4400 svchost.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe"C:\Users\Admin\AppData\Local\Temp\f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe"C:\Users\Admin\AppData\Local\Temp\f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41.exe"2⤵
- 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
- 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
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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⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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
4.0MB
MD5da9f8f49854878c38e95f93006bc7c19
SHA18ae980378bd2c42a24f2a6b4be2f0695a97860d6
SHA256f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41
SHA512357ff9810a8f66ebe301daf160072a5ea11a2e579b79d0a34d1b66106facb9b7e9cd045dcf4dd41dd6302e39c31c094438c2c447911504e2d274e65963a7835f
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C:\Windows\rss\csrss.exeFilesize
4.0MB
MD5da9f8f49854878c38e95f93006bc7c19
SHA18ae980378bd2c42a24f2a6b4be2f0695a97860d6
SHA256f5080fc8269a3c8dd919e8d1dbd2ff9d6bc562c70c6429a01482236d5f29dc41
SHA512357ff9810a8f66ebe301daf160072a5ea11a2e579b79d0a34d1b66106facb9b7e9cd045dcf4dd41dd6302e39c31c094438c2c447911504e2d274e65963a7835f
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memory/572-159-0x0000000000000000-mapping.dmp
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memory/952-140-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/952-144-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/952-135-0x0000000000000000-mapping.dmp
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memory/952-138-0x0000000002B18000-0x0000000002F01000-memory.dmpFilesize
3.9MB
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memory/1780-133-0x0000000002D00000-0x0000000003577000-memory.dmpFilesize
8.5MB
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memory/1780-132-0x0000000002912000-0x0000000002CFB000-memory.dmpFilesize
3.9MB
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memory/1780-134-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1780-136-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1792-145-0x0000000000000000-mapping.dmp
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memory/2644-149-0x0000000000000000-mapping.dmp
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memory/2780-139-0x0000000000000000-mapping.dmp
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memory/3560-152-0x0000000000000000-mapping.dmp
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memory/3624-146-0x0000000000000000-mapping.dmp
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memory/4280-160-0x0000000000000000-mapping.dmp
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memory/4584-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4584-148-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4584-158-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4584-147-0x0000000002E00000-0x00000000031E9000-memory.dmpFilesize
3.9MB
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memory/4584-141-0x0000000000000000-mapping.dmp
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memory/4632-137-0x0000000000000000-mapping.dmp
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memory/5016-154-0x0000000000000000-mapping.dmp
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memory/5016-157-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/5016-161-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/5016-163-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB