Analysis
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max time kernel
150s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
19-05-2024 16:27
Static task
static1
Behavioral task
behavioral1
Sample
91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe
Resource
win10v2004-20240426-en
General
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Target
91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe
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Size
4.1MB
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MD5
967200bfff751d0803ef6ffe638e50ad
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SHA1
b63159bd5a54bcf6c2a68039ac28fa2d70684a07
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SHA256
91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e
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SHA512
bd687792e6c279a131cd2a10c65ab27f57f0531ae8597a6e6ee09901a25b46d19e1bf2958a1f8b0797984808307533decd5b3aa3387f0036f5106a4f8da72e35
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SSDEEP
98304:BvHfbigA34ifkpJZQU0TgaIfW6UkFHwAhDtgwFW+18:BvHfb2IifudqhIuUHwAjW+u
Malware Config
Signatures
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Glupteba payload 12 IoCs
Processes:
resource yara_rule behavioral1/memory/5084-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4992-231-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-235-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-238-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-243-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-247-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-251-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-255-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-259-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-263-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-267-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral1/memory/4992-271-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 4480 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 4992 csrss.exe 3384 injector.exe 4100 windefender.exe 424 windefender.exe -
Processes:
resource yara_rule behavioral1/memory/4100-221-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/files/0x0008000000023441-222.dat upx behavioral1/memory/4100-225-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/424-223-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/files/0x0008000000023441-220.dat upx behavioral1/memory/424-229-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/424-237-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.execsrss.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\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 -
Drops file in System32 directory 7 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.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:
91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe -
Drops file in Windows directory 4 IoCs
Processes:
csrss.exe91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exedescription ioc Process File opened for modification C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\rss 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe File created C:\Windows\rss\csrss.exe 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe File created C:\Windows\windefender.exe csrss.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exepid Process 3256 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 4432 powershell.exe 3596 powershell.exe 2908 powershell.exe 4288 powershell.exe 1016 powershell.exe 424 powershell.exe 2908 powershell.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 2388 schtasks.exe 3120 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exepowershell.exepowershell.exewindefender.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2142 = "Transbaikal Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2532 = "Chatham Islands Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-572 = "China Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2452 = "Saint Pierre Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-104 = "Central Brazilian Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-652 = "AUS Central Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-502 = "Nepal Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-532 = "Sri Lanka Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-391 = "Arab Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1661 = "Bahia Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-272 = "Greenwich Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-842 = "Argentina Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-161 = "Central Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-302 = "Romance Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-132 = "US Eastern Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-632 = "Tokyo Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2391 = "Aleutian Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-441 = "Arabian Daylight Time" windefender.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exepowershell.exe91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 3596 powershell.exe 3596 powershell.exe 5084 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 5084 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 2908 powershell.exe 2908 powershell.exe 2908 powershell.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 4288 powershell.exe 4288 powershell.exe 4288 powershell.exe 1016 powershell.exe 1016 powershell.exe 1016 powershell.exe 424 powershell.exe 424 powershell.exe 424 powershell.exe 2908 powershell.exe 2908 powershell.exe 2908 powershell.exe 4432 powershell.exe 4432 powershell.exe 4432 powershell.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 4992 csrss.exe 4992 csrss.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 4992 csrss.exe 4992 csrss.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 4992 csrss.exe 4992 csrss.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe 3384 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exe91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 3596 powershell.exe Token: SeDebugPrivilege 5084 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Token: SeImpersonatePrivilege 5084 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe Token: SeDebugPrivilege 2908 powershell.exe Token: SeDebugPrivilege 4288 powershell.exe Token: SeDebugPrivilege 1016 powershell.exe Token: SeDebugPrivilege 424 powershell.exe Token: SeDebugPrivilege 2908 powershell.exe Token: SeDebugPrivilege 4432 powershell.exe Token: SeSystemEnvironmentPrivilege 4992 csrss.exe Token: SeSecurityPrivilege 3256 sc.exe Token: SeSecurityPrivilege 3256 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 5084 wrote to memory of 3596 5084 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 89 PID 5084 wrote to memory of 3596 5084 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 89 PID 5084 wrote to memory of 3596 5084 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 89 PID 1632 wrote to memory of 2908 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 116 PID 1632 wrote to memory of 2908 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 116 PID 1632 wrote to memory of 2908 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 116 PID 1632 wrote to memory of 4452 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 101 PID 1632 wrote to memory of 4452 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 101 PID 4452 wrote to memory of 4480 4452 cmd.exe 103 PID 4452 wrote to memory of 4480 4452 cmd.exe 103 PID 1632 wrote to memory of 4288 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 104 PID 1632 wrote to memory of 4288 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 104 PID 1632 wrote to memory of 4288 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 104 PID 1632 wrote to memory of 1016 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 108 PID 1632 wrote to memory of 1016 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 108 PID 1632 wrote to memory of 1016 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 108 PID 1632 wrote to memory of 4992 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 110 PID 1632 wrote to memory of 4992 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 110 PID 1632 wrote to memory of 4992 1632 91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe 110 PID 4992 wrote to memory of 424 4992 csrss.exe 129 PID 4992 wrote to memory of 424 4992 csrss.exe 129 PID 4992 wrote to memory of 424 4992 csrss.exe 129 PID 4992 wrote to memory of 2908 4992 csrss.exe 116 PID 4992 wrote to memory of 2908 4992 csrss.exe 116 PID 4992 wrote to memory of 2908 4992 csrss.exe 116 PID 4992 wrote to memory of 4432 4992 csrss.exe 119 PID 4992 wrote to memory of 4432 4992 csrss.exe 119 PID 4992 wrote to memory of 4432 4992 csrss.exe 119 PID 4992 wrote to memory of 3384 4992 csrss.exe 121 PID 4992 wrote to memory of 3384 4992 csrss.exe 121 PID 4100 wrote to memory of 3336 4100 windefender.exe 127 PID 4100 wrote to memory of 3336 4100 windefender.exe 127 PID 4100 wrote to memory of 3336 4100 windefender.exe 127 PID 3336 wrote to memory of 3256 3336 cmd.exe 128 PID 3336 wrote to memory of 3256 3336 cmd.exe 128 PID 3336 wrote to memory of 3256 3336 cmd.exe 128 -
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\91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe"C:\Users\Admin\AppData\Local\Temp\91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5084 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3596
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C:\Users\Admin\AppData\Local\Temp\91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe"C:\Users\Admin\AppData\Local\Temp\91546a0498d4320c8239ba82d97e648d5ae2bf8ff549659875541c82e06ad81e.exe"2⤵
- 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:1632 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2908
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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
PID:4452 -
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
PID:4480
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4288
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1016
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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.
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4992 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:424
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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)
PID:2388
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:4376
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2908
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4432
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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:3384
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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)
PID:3120
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4100 -
C:\Windows\SysWOW64\cmd.execmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)5⤵
- Suspicious use of WriteProcessMemory
PID:3336 -
C:\Windows\SysWOW64\sc.exesc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)6⤵
- Launches sc.exe
- Suspicious use of AdjustPrivilegeToken
PID:3256
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:424
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b1e92f99c8b3b14ef02ad44d73b7b168
SHA10060b025fa1d723f06b297778aaf9873a985f367
SHA256f7173a078aed66fdb1721f00eef8f27f371e5529768faf682a3a3d38d96aa1ed
SHA512c067ac497ca8b10c4cc86481fb17d5b4a722e88b9a7df400b302803700b58b4f1066531c1c2b481c3caeaf25bf6bdeca757c3e622cd981a700a8be7a868df729
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD54c39a492eccab0db7d9d8f87e010d68c
SHA1fb2601f9d238fbe1eda53d726b4c81c0b7ea69fb
SHA256e737ab3de6736c7b636fc6b0b5fab373951dd542eeda053708c106efd09d1b84
SHA512bf54c7acca296c77ae4cf875e9e7c73aaa6b664d71a363fd2b0c737632145b4f120e56cb4a774b7570d5d62f1a5c8fbe643bd2d8350e796ff6714505e3a26e3b
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD52200ddffa0de79597ee1312d9c3ce2cb
SHA11fb6b433d16ac635964fdae1e7c63e2ec47dfa68
SHA256033fccc42a9bdb27b206b27db88405eb2a192784f6448af5dafbb5e8cf30f070
SHA5127223589dbd79e836026e37426fecd37a31e31dbe70898c98eab77e7df5149c7aae7b4873d1ec8a2e105bca359a582e1a7abed1454cdd53e6200082ea623ba2de
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5894cb7fb9869e48b79582729a188b7ec
SHA1b4568a98f5e26fdeee506678d960a929c7e31cbe
SHA2563883fcc98802d112032bf4af8accff7fb64259a077b4b04abf8dd164b320d9a6
SHA51216e40b626bdb8fbbf96cb0018ad3f0d38c7e0df20a20ccd515257f15506e36f9760c348f5b16a4c239b9b86e700aad158ecb39ae0da53ae66d75180caade2035
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD586a5a6a82a4c531f1642af79d2557869
SHA11622569aa08a1ba72790e4a00176b3f61a03a12d
SHA2565892d57e4e614973e7072d0ad56a94d08e91f07fb8f8556505cc4db5ee3cac73
SHA512606d69c02d04b29ffdd6d19821011fefff09354c1db1d1577ff13b2f65320f6b59af78492af0b3919e9b02922279bbb0f19f68212853a0259ef63984559be8df
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Filesize
2.4MB
MD5eed2ca0d19e3e77fe73978b69d5a5f59
SHA12158abc6dc5e8dff1717d205470d3674a6586dc7
SHA25606645709b1c13432de447027f8e981a6772c08b9dce6eb470eb28ac5f99b950b
SHA5121c0a9356e9e1978517402fdf5a0f77a2165f8d750e747eea3257221a598edadd9c3d4acbb63a1a54aa23f5f6d8a794cca86bfc45abdf367ad6c32ce2ce88106c
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Filesize
2.2MB
MD5d96890fdd288a127c186d736426cf93f
SHA1a7dec591178d222337ad71dabc5089e611672bc4
SHA2564d9a779159b3484c3b7a785f5015633a9bb48f3559d602228637724ac52a420f
SHA512f712e7cc72efee39252e7f1d792810475c2088cf03ea471390938f2f7a0a7878e35d73b88c3246dad77c5678a4b638c1fc3a55937a97af26ee981772c6dfabf9
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec
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Filesize
1.2MB
MD5a43d1181c5c818d7d78e782ec1828903
SHA1ce87b6b09f2b30c85a2420d7e1471a0c2db55475
SHA25657b26db83b472d3aa74fdc739ae2a2aab69513a334cc9850d2adc81053093cf4
SHA5125985d550e97d5a383a3b121dd3c42ef032f3815afa7ac6ff35c0935fb143c51c5ac0406b0dd854c1936aff98d8da964ba1c390187b81380ee891ac8708cdd6d4