Analysis
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max time kernel
150s -
max time network
132s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
19-04-2024 14:02
Static task
static1
Behavioral task
behavioral1
Sample
21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe
Resource
win10v2004-20240412-en
General
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Target
21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe
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Size
4.2MB
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MD5
5ad0fb4cba53537bd47e9b5fdc77cc62
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SHA1
fde04bd35efc95772b636c5b271bc57b62347e09
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SHA256
21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e
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SHA512
92bf0e5eb92395851a7f0eecdd3484dd053e391eb098b66ac8839f74851c9737f21c1d33e4d9f173b9fe963e7e4578228c91a9cbd56033d35fc3bf1703c84622
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SSDEEP
98304:Du15A1GiNRFuKfVvdEh8/k6ld6teGU//blllQO5EUt0+BFZRUpdVYt:DaARFuKJWhQkavn//blllQdNaFDGXC
Malware Config
Signatures
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Glupteba payload 20 IoCs
Processes:
resource yara_rule behavioral2/memory/5016-2-0x0000000004040000-0x000000000492B000-memory.dmp family_glupteba behavioral2/memory/5016-3-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/4324-52-0x0000000003FB0000-0x000000000489B000-memory.dmp family_glupteba behavioral2/memory/4324-53-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/5016-67-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/4324-137-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/4324-146-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-223-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-244-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-254-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-257-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-260-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-263-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-266-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-269-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-272-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-275-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-278-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-281-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba behavioral2/memory/1836-284-0x0000000000400000-0x0000000001DFD000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 2156 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid process 1836 csrss.exe 1988 injector.exe 4876 windefender.exe 3884 windefender.exe -
Processes:
resource yara_rule C:\Windows\windefender.exe upx behavioral2/memory/4876-252-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3884-255-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3884-261-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2718508534-2116753757-2794822388-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\S-1-5-21-2718508534-2116753757-2794822388-1000\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 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 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 -
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:
21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe -
Drops file in Windows directory 4 IoCs
Processes:
csrss.exe21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exedescription ioc process File opened for modification C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\rss 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe File created C:\Windows\rss\csrss.exe 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.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 4196 sc.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 4872 schtasks.exe 4868 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
windefender.exe21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2792 = "Novosibirsk Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-121 = "SA Pacific Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-42 = "E. South America Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-252 = "Dateline Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs 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\26\52C64B7E\@tzres.dll,-435 = "Georgian Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-141 = "Canada Central Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2872 = "Magallanes Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-71 = "Newfoundland Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-912 = "Mauritius Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-12 = "Azores Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-891 = "Morocco Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-361 = "GTB Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-211 = "Pacific Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-631 = "Tokyo Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exepowershell.exe21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 3944 powershell.exe 3944 powershell.exe 5016 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 5016 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 956 powershell.exe 956 powershell.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe 3660 powershell.exe 3660 powershell.exe 1904 powershell.exe 1904 powershell.exe 640 powershell.exe 640 powershell.exe 3816 powershell.exe 3816 powershell.exe 956 powershell.exe 956 powershell.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1836 csrss.exe 1836 csrss.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1836 csrss.exe 1836 csrss.exe 1988 injector.exe 1988 injector.exe 1836 csrss.exe 1836 csrss.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe 1988 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exe21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid process Token: SeDebugPrivilege 3944 powershell.exe Token: SeDebugPrivilege 5016 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Token: SeImpersonatePrivilege 5016 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe Token: SeDebugPrivilege 956 powershell.exe Token: SeDebugPrivilege 3660 powershell.exe Token: SeDebugPrivilege 1904 powershell.exe Token: SeDebugPrivilege 640 powershell.exe Token: SeDebugPrivilege 3816 powershell.exe Token: SeDebugPrivilege 956 powershell.exe Token: SeSystemEnvironmentPrivilege 1836 csrss.exe Token: SeSecurityPrivilege 4196 sc.exe Token: SeSecurityPrivilege 4196 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.execmd.execsrss.exewindefender.execmd.exedescription pid process target process PID 5016 wrote to memory of 3944 5016 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 5016 wrote to memory of 3944 5016 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 5016 wrote to memory of 3944 5016 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 956 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 956 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 956 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 4208 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe cmd.exe PID 4324 wrote to memory of 4208 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe cmd.exe PID 4208 wrote to memory of 2156 4208 cmd.exe netsh.exe PID 4208 wrote to memory of 2156 4208 cmd.exe netsh.exe PID 4324 wrote to memory of 3660 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 3660 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 3660 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 1904 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 1904 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 1904 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe powershell.exe PID 4324 wrote to memory of 1836 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe csrss.exe PID 4324 wrote to memory of 1836 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe csrss.exe PID 4324 wrote to memory of 1836 4324 21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe csrss.exe PID 1836 wrote to memory of 640 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 640 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 640 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 3816 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 3816 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 3816 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 956 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 956 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 956 1836 csrss.exe powershell.exe PID 1836 wrote to memory of 1988 1836 csrss.exe injector.exe PID 1836 wrote to memory of 1988 1836 csrss.exe injector.exe PID 4876 wrote to memory of 4416 4876 windefender.exe cmd.exe PID 4876 wrote to memory of 4416 4876 windefender.exe cmd.exe PID 4876 wrote to memory of 4416 4876 windefender.exe cmd.exe PID 4416 wrote to memory of 4196 4416 cmd.exe sc.exe PID 4416 wrote to memory of 4196 4416 cmd.exe sc.exe PID 4416 wrote to memory of 4196 4416 cmd.exe sc.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\21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe"C:\Users\Admin\AppData\Local\Temp\21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5016 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3944
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C:\Users\Admin\AppData\Local\Temp\21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.exe"C:\Users\Admin\AppData\Local\Temp\21cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e.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:4324 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:956
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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:4208 -
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:2156
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3660
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1904
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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:1836 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:640
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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:4872
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:4504
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3816
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:956
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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:1988
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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:4868
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4876 -
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:4416 -
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:4196
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3884
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
MD5ac4917a885cf6050b1a483e4bc4d2ea5
SHA1b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA256e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
SHA512092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5612119695d153291407efa7fbc727d8c
SHA135387ea29b9e135297ad33c6127138c89b5f6c82
SHA256df7cc9951c574d077fa80e4b699e4cbb034932c7f50aa484fe58ea2032e56fab
SHA5121a2d65b9409058a73086d87673b1e7beec136b09dd4a68111e68250d2169d213c7fcf3800e336af4a985de98ea67ce05d9c01809e9dd80d12b8427107054b251
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5070aa17af2297f9185f85718cee0f685
SHA110a9faabf9908e4505b8a481b1c02eb76acb455c
SHA2565c44a7885b62862cbf897b0549e32a51f5296a6b451e53162253d39afa078336
SHA5123df5eda3ca00b6468e34915a37638f7223313308ab8875dda272c774c70fa282c6ec30dd9f4de75a2be57a8b9a04ce9a659f7893a2268c5db3c6e857be1d265f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5069262a1ad64dd8f22355f53e68d1be4
SHA13e8fa46cbc4e9f69e0e99b62ff4c5a82eb346e46
SHA256ad7a37523ccb76d1be3e0978de2ca130417ac777d09c5b28d658f6f306430ef2
SHA512bd36e97bb3ee16ae44bf6bc79b9582c1c8e36749e40e41e0e5d659e347a927ebb971d926d6a0c1fed14c1358c118326c12aac61db54003a6e61b90d517fab0c1
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD575ab5273ac99c4fa9e4718249a757b54
SHA1ab977d9c60008e9a8424fe70c3239221954a181b
SHA2560da0c70198365dbaf379db99d54d307d71eeb342b05e83b75135763d50d77057
SHA512bcf086cb01f130fe0120853fbfed0cd92d9be933724c8c9e4f5c346ee08229eeb367e57db3e4db39382a2e6d266671f2367cfc24c80f0bc732cc31e2c95fc0f0
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD537aaa0c1c706af2f9d42803092e02bfd
SHA1175bc5bebf8dfa2d23e17e6d7b9953ebeb89779f
SHA2563a22e2da1e4e222ef05a371e9d5f8c249810c161c3e03203e1d526861375fde8
SHA512f5c7973bff147c4d20ee7bf6a1c81bcb3968ac6ed86115bfeeba5143ad2370b51e7435da093ff158274581c8bb8a6a57dba37950b2d5b7d1c6d73fb592bb274c
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Filesize
4.2MB
MD55ad0fb4cba53537bd47e9b5fdc77cc62
SHA1fde04bd35efc95772b636c5b271bc57b62347e09
SHA25621cb1875f4071f277658fc6b8bd7b5dcc41b64a33bf8910822a048e9886a137e
SHA51292bf0e5eb92395851a7f0eecdd3484dd053e391eb098b66ac8839f74851c9737f21c1d33e4d9f173b9fe963e7e4578228c91a9cbd56033d35fc3bf1703c84622
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec