Analysis
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max time kernel
150s -
max time network
126s -
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 23:49
Static task
static1
General
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Target
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe
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Size
4.1MB
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MD5
f96acfb3472f8acb891789a2d78a362b
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SHA1
67d58b71e66958761b544d4fcd141d3f276c127a
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SHA256
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8
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SHA512
d9763a4a8f05a0d362114af0a45dc2dda76fed954937847c5e767ac3eb1c29064bb07ecaca839382344965246173e2bd9bdba3b935de2b82d3a716791e11a56d
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SSDEEP
98304:g9KBPP4wATZUdpDaBq3Icw1Qa4TR0EJxRxOJvMxxWLY:1TAVax4c2QaYR0EJ9OJvMx5
Malware Config
Signatures
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Glupteba payload 15 IoCs
Processes:
resource yara_rule behavioral1/memory/3152-118-0x0000000005230000-0x0000000005AA7000-memory.dmp family_glupteba behavioral1/memory/3152-119-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/4116-124-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-132-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-133-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-134-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-135-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-136-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-137-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-138-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-139-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-140-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-141-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-142-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba behavioral1/memory/1992-149-0x0000000000400000-0x0000000002F3D000-memory.dmp family_glupteba -
Processes:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 1992 csrss.exe 3144 injector.exe 3472 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/3472-148-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/3472-150-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Processes:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.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\"" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.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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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:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe -
Drops file in Windows directory 2 IoCs
Processes:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exedescription ioc process File opened for modification C:\Windows\rss 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe File created C:\Windows\rss\csrss.exe 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.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 1308 schtasks.exe 1112 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exenetsh.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.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" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.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,-491 = "India Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1842 = "Russia TZ 4 Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.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" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.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" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exeinjector.execsrss.exepid process 3152 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 3152 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 1992 csrss.exe 1992 csrss.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 1992 csrss.exe 1992 csrss.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe 3144 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.execsrss.exedescription pid process Token: SeDebugPrivilege 3152 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Token: SeImpersonatePrivilege 3152 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe Token: SeSystemEnvironmentPrivilege 1992 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.execmd.execsrss.exedescription pid process target process PID 4116 wrote to memory of 4788 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe cmd.exe PID 4116 wrote to memory of 4788 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe cmd.exe PID 4788 wrote to memory of 4916 4788 cmd.exe netsh.exe PID 4788 wrote to memory of 4916 4788 cmd.exe netsh.exe PID 4116 wrote to memory of 1992 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe csrss.exe PID 4116 wrote to memory of 1992 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe csrss.exe PID 4116 wrote to memory of 1992 4116 9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe csrss.exe PID 1992 wrote to memory of 3144 1992 csrss.exe injector.exe PID 1992 wrote to memory of 3144 1992 csrss.exe injector.exe PID 1992 wrote to memory of 3472 1992 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 1992 wrote to memory of 3472 1992 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 1992 wrote to memory of 3472 1992 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\9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe"C:\Users\Admin\AppData\Local\Temp\9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.exe"C:\Users\Admin\AppData\Local\Temp\9d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8.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
MD5f96acfb3472f8acb891789a2d78a362b
SHA167d58b71e66958761b544d4fcd141d3f276c127a
SHA2569d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8
SHA512d9763a4a8f05a0d362114af0a45dc2dda76fed954937847c5e767ac3eb1c29064bb07ecaca839382344965246173e2bd9bdba3b935de2b82d3a716791e11a56d
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5f96acfb3472f8acb891789a2d78a362b
SHA167d58b71e66958761b544d4fcd141d3f276c127a
SHA2569d75b3af5ee7ab0cd804cd184d7f16186176460ac137e0b68d400ddcbd1a40e8
SHA512d9763a4a8f05a0d362114af0a45dc2dda76fed954937847c5e767ac3eb1c29064bb07ecaca839382344965246173e2bd9bdba3b935de2b82d3a716791e11a56d
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memory/1992-135-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-140-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-133-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-134-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-149-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-136-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-137-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-138-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-139-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-132-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-141-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/1992-142-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/3152-119-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB
-
memory/3152-118-0x0000000005230000-0x0000000005AA7000-memory.dmpFilesize
8.5MB
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memory/3472-148-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/3472-150-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4116-124-0x0000000000400000-0x0000000002F3D000-memory.dmpFilesize
43.2MB