Analysis
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max time kernel
149s -
max time network
142s -
platform
windows10-1703_x64 -
resource
win10-20230220-en -
resource tags
arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system -
submitted
28-03-2023 19:39
Static task
static1
General
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Target
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe
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Size
4.1MB
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MD5
537e7b65d99664786a92f79df3ef9998
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SHA1
b5a654e245561788ee9400bb81681424a0be3690
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SHA256
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c
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SHA512
24bdb4905b1a6d95246963aa3a59faec0fef4f92c2318e2dae2e7b39a6618dfe87dcc97e3b270a32024d742b08cbcb594aecedb5bf8bd6d84b54af0de7436ea0
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SSDEEP
98304:m5WAcVPIJkEpWqzo2CYKTP49xfEJicYRmST5XhK2k70cm:MCweEp5zo2C3TP49cicYoGdU2A0cm
Malware Config
Signatures
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Glupteba payload 17 IoCs
Processes:
resource yara_rule behavioral1/memory/3076-121-0x0000000005070000-0x00000000058E7000-memory.dmp family_glupteba behavioral1/memory/3076-122-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4372-127-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-135-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-136-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-137-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-138-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-139-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-140-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-141-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-142-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-143-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-144-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-145-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-146-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-147-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2088-148-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba -
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 2088 csrss.exe 4660 injector.exe -
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\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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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
Processes:
csrss.exedescription ioc process File opened for modification \??\WinMonFS csrss.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe -
Drops file in Windows directory 2 IoCs
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exedescription ioc process File created C:\Windows\rss\csrss.exe 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe File opened for modification C:\Windows\rss 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.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 1960 schtasks.exe 4136 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exenetsh.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Key created \REGISTRY\USER\.DEFAULT\SYSTEM netsh.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.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" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.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" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.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" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.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" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Control\NetTrace netsh.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control\NetTrace\Session netsh.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exeinjector.execsrss.exepid process 3076 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 3076 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 2088 csrss.exe 2088 csrss.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 2088 csrss.exe 2088 csrss.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe 4660 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.execsrss.exedescription pid process Token: SeDebugPrivilege 3076 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Token: SeImpersonatePrivilege 3076 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe Token: SeSystemEnvironmentPrivilege 2088 csrss.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.execmd.execsrss.exedescription pid process target process PID 4372 wrote to memory of 8 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe cmd.exe PID 4372 wrote to memory of 8 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe cmd.exe PID 8 wrote to memory of 408 8 cmd.exe netsh.exe PID 8 wrote to memory of 408 8 cmd.exe netsh.exe PID 4372 wrote to memory of 2088 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe csrss.exe PID 4372 wrote to memory of 2088 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe csrss.exe PID 4372 wrote to memory of 2088 4372 6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe csrss.exe PID 2088 wrote to memory of 4660 2088 csrss.exe injector.exe PID 2088 wrote to memory of 4660 2088 csrss.exe injector.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe"C:\Users\Admin\AppData\Local\Temp\6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3076 -
C:\Users\Admin\AppData\Local\Temp\6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe"C:\Users\Admin\AppData\Local\Temp\6e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c.exe"2⤵
- Windows security bypass
- Windows security modification
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4372 -
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
PID:8 -
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
PID:408 -
C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2088 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:1960 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:2768
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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
PID:4660 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4136
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5537e7b65d99664786a92f79df3ef9998
SHA1b5a654e245561788ee9400bb81681424a0be3690
SHA2566e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c
SHA51224bdb4905b1a6d95246963aa3a59faec0fef4f92c2318e2dae2e7b39a6618dfe87dcc97e3b270a32024d742b08cbcb594aecedb5bf8bd6d84b54af0de7436ea0
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5537e7b65d99664786a92f79df3ef9998
SHA1b5a654e245561788ee9400bb81681424a0be3690
SHA2566e88c879b593368a166e415ae74bb518b381bff385c0b716033d8c676d7c4d3c
SHA51224bdb4905b1a6d95246963aa3a59faec0fef4f92c2318e2dae2e7b39a6618dfe87dcc97e3b270a32024d742b08cbcb594aecedb5bf8bd6d84b54af0de7436ea0
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memory/2088-138-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-141-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-148-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-135-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-136-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-137-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-147-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-139-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-140-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-146-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-142-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-143-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-144-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/2088-145-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/3076-121-0x0000000005070000-0x00000000058E7000-memory.dmpFilesize
8.5MB
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memory/3076-122-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/4372-127-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB