Analysis
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max time kernel
149s -
max time network
143s -
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 16:41
Static task
static1
General
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Target
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe
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Size
4.1MB
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MD5
ffc0cdbdf33fcc19161c6e7b63e9abde
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SHA1
91fcd85a610a701f0d09e539a036603756308e09
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SHA256
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d
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SHA512
23ef81371126813fae2248a795b7c4679519abf77b53851b72ed609f583ca5854b1bbae7386a19f617c3d17450f54039449b883b2cca756eaddb449d85a88036
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SSDEEP
98304:zFkiC6Dxkh193M37JyWckqXzjOES7r9ojcGWjOKoj:RkiCcxkJM34WcfNSNSUsj
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral1/memory/2580-122-0x0000000005030000-0x00000000058A7000-memory.dmp family_glupteba behavioral1/memory/2580-123-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1392-128-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-131-0x00000000054F0000-0x0000000005D67000-memory.dmp family_glupteba behavioral1/memory/1304-137-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-138-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-139-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-140-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-141-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-142-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-143-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-144-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-145-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-146-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-147-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-148-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-154-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral1/memory/1304-156-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba -
Processes:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 1304 csrss.exe 4832 injector.exe 4916 f801950a962ddba14caaa44bf084b55c.exe -
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/4916-155-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/4916-157-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Processes:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-640001698-3754512395-3275565439-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\S-1-5-21-640001698-3754512395-3275565439-1000\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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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:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe -
Drops file in Windows directory 2 IoCs
Processes:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exedescription ioc process File opened for modification C:\Windows\rss 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe File created C:\Windows\rss\csrss.exe 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.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 3788 schtasks.exe 4768 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exenetsh.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.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" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.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" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.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" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet netsh.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.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" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time" 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exeinjector.execsrss.exepid process 2580 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 2580 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 1304 csrss.exe 1304 csrss.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 1304 csrss.exe 1304 csrss.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe 4832 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.execsrss.exedescription pid process Token: SeDebugPrivilege 2580 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Token: SeImpersonatePrivilege 2580 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe Token: SeSystemEnvironmentPrivilege 1304 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.execmd.execsrss.exedescription pid process target process PID 1392 wrote to memory of 2984 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe cmd.exe PID 1392 wrote to memory of 2984 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe cmd.exe PID 2984 wrote to memory of 1068 2984 cmd.exe netsh.exe PID 2984 wrote to memory of 1068 2984 cmd.exe netsh.exe PID 1392 wrote to memory of 1304 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe csrss.exe PID 1392 wrote to memory of 1304 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe csrss.exe PID 1392 wrote to memory of 1304 1392 922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe csrss.exe PID 1304 wrote to memory of 4832 1304 csrss.exe injector.exe PID 1304 wrote to memory of 4832 1304 csrss.exe injector.exe PID 1304 wrote to memory of 4916 1304 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 1304 wrote to memory of 4916 1304 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 1304 wrote to memory of 4916 1304 csrss.exe f801950a962ddba14caaa44bf084b55c.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\922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe"C:\Users\Admin\AppData\Local\Temp\922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.exe"C:\Users\Admin\AppData\Local\Temp\922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d.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
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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
- Manipulates WinMonFS driver.
- 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
MD5ffc0cdbdf33fcc19161c6e7b63e9abde
SHA191fcd85a610a701f0d09e539a036603756308e09
SHA256922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d
SHA51223ef81371126813fae2248a795b7c4679519abf77b53851b72ed609f583ca5854b1bbae7386a19f617c3d17450f54039449b883b2cca756eaddb449d85a88036
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5ffc0cdbdf33fcc19161c6e7b63e9abde
SHA191fcd85a610a701f0d09e539a036603756308e09
SHA256922e8909974e9e2357d3f281cb53fae57077acf1e2c1ca0c155b1e70f571db7d
SHA51223ef81371126813fae2248a795b7c4679519abf77b53851b72ed609f583ca5854b1bbae7386a19f617c3d17450f54039449b883b2cca756eaddb449d85a88036
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memory/1304-141-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-144-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-137-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-138-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-139-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-140-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-156-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-142-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-143-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-131-0x00000000054F0000-0x0000000005D67000-memory.dmpFilesize
8.5MB
-
memory/1304-145-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-146-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-147-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-148-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1304-154-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/1392-128-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/2580-123-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
-
memory/2580-122-0x0000000005030000-0x00000000058A7000-memory.dmpFilesize
8.5MB
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memory/4916-155-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4916-157-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB