Analysis
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max time kernel
150s -
max time network
153s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
20-05-2024 04:06
Static task
static1
Behavioral task
behavioral1
Sample
05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe
Resource
win10v2004-20240508-en
General
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Target
05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe
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Size
4.1MB
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MD5
838f1358940dbba9f4505d0c24bca4c7
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SHA1
c49efbe9a26a8b0865c5bad29a84794e5e4705f2
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SHA256
05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1
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SHA512
fd546b1d240fcfcea49f943b6ad7860d0714df6e1b1aba1bf1e2218461f02e6318b6817818d9233af41aef10a5b3106dadc2412cde8b6330ea325067b34ebea8
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SSDEEP
98304:eQAQcsa3GhfWYEvpb4LdECaqY+VYhFzXw/u5g9cAd9nz:eQAQcDPYxuCJe7X5ghfz
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral2/memory/4880-2-0x00000000049B0000-0x000000000529B000-memory.dmp family_glupteba behavioral2/memory/4880-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4880-53-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4880-54-0x00000000049B0000-0x000000000529B000-memory.dmp family_glupteba behavioral2/memory/4880-51-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/2852-138-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-205-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-207-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-209-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-211-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-213-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-215-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-217-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-219-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-221-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-223-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-225-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1092-227-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 4776 netsh.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid Process 1092 csrss.exe 2824 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.execsrss.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
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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 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 -
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:
05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe -
Drops file in Windows directory 2 IoCs
Processes:
05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exedescription ioc Process File opened for modification C:\Windows\rss 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe File created C:\Windows\rss\csrss.exe 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 4016 powershell.exe 2044 powershell.exe 132 powershell.exe 3728 powershell.exe 2080 powershell.exe 3312 powershell.exe 888 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 564 schtasks.exe 1028 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
csrss.exe05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.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 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates 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\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot 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\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time" 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exepowershell.exe05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 2080 powershell.exe 2080 powershell.exe 4880 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 4880 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 3312 powershell.exe 3312 powershell.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 888 powershell.exe 888 powershell.exe 4016 powershell.exe 4016 powershell.exe 2044 powershell.exe 2044 powershell.exe 132 powershell.exe 132 powershell.exe 3728 powershell.exe 3728 powershell.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 1092 csrss.exe 1092 csrss.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 1092 csrss.exe 1092 csrss.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe 2824 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
powershell.exe05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exedescription pid Process Token: SeDebugPrivilege 2080 powershell.exe Token: SeDebugPrivilege 4880 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Token: SeImpersonatePrivilege 4880 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe Token: SeDebugPrivilege 3312 powershell.exe Token: SeDebugPrivilege 888 powershell.exe Token: SeDebugPrivilege 4016 powershell.exe Token: SeDebugPrivilege 2044 powershell.exe Token: SeDebugPrivilege 132 powershell.exe Token: SeDebugPrivilege 3728 powershell.exe Token: SeSystemEnvironmentPrivilege 1092 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.execmd.execsrss.exedescription pid Process procid_target PID 4880 wrote to memory of 2080 4880 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 81 PID 4880 wrote to memory of 2080 4880 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 81 PID 4880 wrote to memory of 2080 4880 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 81 PID 2852 wrote to memory of 3312 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 86 PID 2852 wrote to memory of 3312 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 86 PID 2852 wrote to memory of 3312 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 86 PID 2852 wrote to memory of 2584 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 88 PID 2852 wrote to memory of 2584 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 88 PID 2584 wrote to memory of 4776 2584 cmd.exe 90 PID 2584 wrote to memory of 4776 2584 cmd.exe 90 PID 2852 wrote to memory of 888 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 91 PID 2852 wrote to memory of 888 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 91 PID 2852 wrote to memory of 888 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 91 PID 2852 wrote to memory of 4016 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 93 PID 2852 wrote to memory of 4016 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 93 PID 2852 wrote to memory of 4016 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 93 PID 2852 wrote to memory of 1092 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 95 PID 2852 wrote to memory of 1092 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 95 PID 2852 wrote to memory of 1092 2852 05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe 95 PID 1092 wrote to memory of 2044 1092 csrss.exe 96 PID 1092 wrote to memory of 2044 1092 csrss.exe 96 PID 1092 wrote to memory of 2044 1092 csrss.exe 96 PID 1092 wrote to memory of 132 1092 csrss.exe 101 PID 1092 wrote to memory of 132 1092 csrss.exe 101 PID 1092 wrote to memory of 132 1092 csrss.exe 101 PID 1092 wrote to memory of 3728 1092 csrss.exe 104 PID 1092 wrote to memory of 3728 1092 csrss.exe 104 PID 1092 wrote to memory of 3728 1092 csrss.exe 104 PID 1092 wrote to memory of 2824 1092 csrss.exe 106 PID 1092 wrote to memory of 2824 1092 csrss.exe 106 -
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\05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe"C:\Users\Admin\AppData\Local\Temp\05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4880 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2080
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C:\Users\Admin\AppData\Local\Temp\05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.exe"C:\Users\Admin\AppData\Local\Temp\05f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1.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:2852 -
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:3312
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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:2584 -
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:4776
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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:888
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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:4016
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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.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1092 -
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:2044
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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:564
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:4884
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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:132
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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:3728
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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:2824
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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:1028
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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
MD5d0c46cad6c0778401e21910bd6b56b70
SHA17be418951ea96326aca445b8dfe449b2bfa0dca6
SHA2569600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
SHA512057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5a0ec091e0ea0474a2ed1f0ddde67fa1c
SHA18eac74197c9a033004941e71defc5c1c5454226a
SHA256890828dd0ec5ae9664024cac960208eaeea09850c0041f462b93218fb3aa8eb6
SHA512006133ef41dbdb5400ef6553e1468d6ea5d06ffe48b870a217f58ac35598aa008fe0496b80837b3240f3751cfb8a989d0cce2b0421edd47c170076b5d650a34f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b2964001920f7614aab4c50153319641
SHA142445ea0e7d9be81d64c20e7f47373f383ec67cf
SHA25648435836d93cd758e320ccff7e143b9c3715ab327e618f842da67c9b9b2aa1f3
SHA512a39ca6f7bacc0ba06ba79a09a7bf3be4880adfe5332468e2b5d48281c482033bb528de00da1d4c6d8bad40c23193a7a44137c6edf02f1fa6a8b68eec878d4fe2
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5169dbbfdac015bb3343ab58373839a0f
SHA1520f964002506d6132da7df009268d2e874d5765
SHA25603aa8fd90961b165093495e559409b540d925bce56275073c4beeaa58b3e778a
SHA51240bcd1b91f1926e6c7bde73357e1e7563849d1aa7c3b19a9211b64e707da724306fcc029f7f55d60233e97f0c9372687070432a04a850ffc9b7ed9f62abe8c06
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5a70d45bb37feeacd43dfc73dd91c9645
SHA1b7e3bf2f4b71915c9d3b662a8b6763dfc27bceaf
SHA25627838a28866b9b535d790966539adc85678fc60726df4fe122430cc6fc0fbcba
SHA5127be74151ac32ed8c1695d691a55198a7284ee133feda0769846097af7bfb2534eaa0d246af691dd119f760a08d25e0200e28bff3ba75000e146c6bb9d91b8d7f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5e39ffc227753154ca9c4b7286792db49
SHA132fe7a85a253971fb3b9f4e54be2cee6eb3ea43c
SHA256ab2d1c952566fb49ca3398e8bd9967dfa622a9560bddbee3abe44ace64b8e123
SHA5128a7688291ad0f81522f92d2959c224cf96ca1cebd123e2011d499dd0a760abe5dc21400618dd0af2952eacadeb73685ede064531e7b72e4b1e3b3b7d473ae248
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Filesize
4.1MB
MD5838f1358940dbba9f4505d0c24bca4c7
SHA1c49efbe9a26a8b0865c5bad29a84794e5e4705f2
SHA25605f8794377178b61486f3266c074b1e464f6d3d3c102c256a542414e50f1e3c1
SHA512fd546b1d240fcfcea49f943b6ad7860d0714df6e1b1aba1bf1e2218461f02e6318b6817818d9233af41aef10a5b3106dadc2412cde8b6330ea325067b34ebea8