Analysis
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max time kernel
150s -
max time network
115s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-04-2024 22:27
Static task
static1
Behavioral task
behavioral1
Sample
42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe
Resource
win10v2004-20240419-en
General
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Target
42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe
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Size
4.2MB
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MD5
bd20d333b6629f29d517085fbc4b3c11
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SHA1
dc6cda1698101f26bb7d2668137113834198d7b4
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SHA256
42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343
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SHA512
cd391b75546b22e06dc2085048285f70364a7439362b19c96f2e369844a57819f37f49493a45a33ce0c9442567defd40ef45536c135bd42e81b0a46ef780dfef
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SSDEEP
98304:3amOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG1t:3Ty8Jy4o9ecZxQhwo8IinPG1t
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral2/memory/2924-2-0x0000000003F10000-0x00000000047FB000-memory.dmp family_glupteba behavioral2/memory/2924-3-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2924-99-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2924-148-0x0000000003F10000-0x00000000047FB000-memory.dmp family_glupteba behavioral2/memory/1896-147-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-151-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-205-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-208-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-211-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-214-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-217-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-220-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-223-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-226-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-229-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-232-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-235-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/804-238-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 2000 netsh.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 804 csrss.exe 2252 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-734199974-1358367239-436541239-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\S-1-5-21-734199974-1358367239-436541239-1000\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:
42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe -
Drops file in Windows directory 2 IoCs
Processes:
42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exedescription ioc process File opened for modification C:\Windows\rss 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe File created C:\Windows\rss\csrss.exe 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.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 4296 schtasks.exe 440 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exepowershell.exepowershell.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,-2322 = "Sakhalin Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 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\TrustedPeople\Certificates powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs 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,-452 = "Caucasus Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.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" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates 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,-731 = "Fiji Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.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" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.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,-842 = "Argentina Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.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\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exepowershell.exe42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 3304 powershell.exe 3304 powershell.exe 2924 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 2924 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 2680 powershell.exe 2680 powershell.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe 4372 powershell.exe 4372 powershell.exe 4436 powershell.exe 4436 powershell.exe 1192 powershell.exe 1192 powershell.exe 2624 powershell.exe 2624 powershell.exe 3860 powershell.exe 3860 powershell.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 804 csrss.exe 804 csrss.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 804 csrss.exe 804 csrss.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
powershell.exe42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exedescription pid process Token: SeDebugPrivilege 3304 powershell.exe Token: SeDebugPrivilege 2924 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Token: SeImpersonatePrivilege 2924 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe Token: SeDebugPrivilege 2680 powershell.exe Token: SeDebugPrivilege 4372 powershell.exe Token: SeDebugPrivilege 4436 powershell.exe Token: SeDebugPrivilege 1192 powershell.exe Token: SeDebugPrivilege 2624 powershell.exe Token: SeDebugPrivilege 3860 powershell.exe Token: SeSystemEnvironmentPrivilege 804 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.execmd.execsrss.exedescription pid process target process PID 2924 wrote to memory of 3304 2924 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 2924 wrote to memory of 3304 2924 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 2924 wrote to memory of 3304 2924 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 2680 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 2680 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 2680 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 1664 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe cmd.exe PID 1896 wrote to memory of 1664 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe cmd.exe PID 1664 wrote to memory of 2000 1664 cmd.exe netsh.exe PID 1664 wrote to memory of 2000 1664 cmd.exe netsh.exe PID 1896 wrote to memory of 4372 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 4372 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 4372 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 4436 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 4436 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 4436 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe powershell.exe PID 1896 wrote to memory of 804 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe csrss.exe PID 1896 wrote to memory of 804 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe csrss.exe PID 1896 wrote to memory of 804 1896 42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe csrss.exe PID 804 wrote to memory of 1192 804 csrss.exe powershell.exe PID 804 wrote to memory of 1192 804 csrss.exe powershell.exe PID 804 wrote to memory of 1192 804 csrss.exe powershell.exe PID 804 wrote to memory of 2624 804 csrss.exe powershell.exe PID 804 wrote to memory of 2624 804 csrss.exe powershell.exe PID 804 wrote to memory of 2624 804 csrss.exe powershell.exe PID 804 wrote to memory of 3860 804 csrss.exe powershell.exe PID 804 wrote to memory of 3860 804 csrss.exe powershell.exe PID 804 wrote to memory of 3860 804 csrss.exe powershell.exe PID 804 wrote to memory of 2252 804 csrss.exe injector.exe PID 804 wrote to memory of 2252 804 csrss.exe injector.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\42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe"C:\Users\Admin\AppData\Local\Temp\42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3304
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C:\Users\Admin\AppData\Local\Temp\42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.exe"C:\Users\Admin\AppData\Local\Temp\42c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343.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:1896 -
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:2680
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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:1664 -
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:2000
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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:4372
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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:4436
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:804 -
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:1192
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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:4296
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1916
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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:2624
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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:3860
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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:2252
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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:440
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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
MD5104346ed2aa5e32bd14cebe15cb6c802
SHA1c3ea9a7d7109d1977049364e1d31cb03b60e1317
SHA256f2e6ab1fe6a95882c764c358025b4d55fcfd2ef2803e73fc1e8fcd24ce1d3aa3
SHA512b5b252aa45a39e983bf416b2346400576e1bb1d40c8c5990cbf66db854a58dbe59a6c6509518f4fa929a66798397cc792743c054b9b08501f718a3ee4819201b
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD55d65c6ab98a380fe15962dd989da4a94
SHA1b8dc12f68a3d9ae7656a1e288a2cce576730db9b
SHA256e50e5c9c2538b88d011d6c501cab4d79dc85b78aa68ba2dbcd570fa62f84e986
SHA5127e1dd702a7970586d56bcda14f1f21e13ae1437c4074f39e027b6dafa5d0c9979c153e770bb9b12144fe1b74f3f0db2ac915aee1612a854301766f82ca1988e4
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b3f3b9ee6b732dd18dea5f2b45b3afea
SHA19e65f7becdf906e64e0cc838f995c0a3d48ef8c8
SHA2562adf857487cd748431feaf09a73c49be5de59f1ee48e3ef307c1db45c5503a97
SHA51274f0e192dff7a4f94e167e009e256550317662b7300da7091cbb02ac97a6a1865bc6ca9b00d71e468ee107d58cbc8e940475427ff8f149b26a1fe4af3a71d2d3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD58dff70ba210cba1512af69c306f27611
SHA130b90cba40a5fe2701a776680ca7a21e64191286
SHA256248dd378e0a7d1feef96f0e1e4f794e84f05a1215c3946a51b4dd05896a82652
SHA5129efac23857aacb0484a984edbf056163f0451c035f095f2a9e876bcc260e367a3e5c37bf00af367037969f625ffffd9b7d081c8af3249d773ae232b560aed413
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5f62d0f4d802633e5147fb53bc11e2008
SHA142dce88872af80dc2238bf138826772b5322f85c
SHA256dcb15467d678d24eb1dd478641fd18073ef33f2cc404c982763b90f664d7b54e
SHA5128680bc725ab39eb055a78cc4ab01df9f7de17819ea69851714bc599bfb34a5aa7bb3ed07c8c24fd56ff795ae09c6d6d4246c4e12d3eb0fae66b2e4af3b065908
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Filesize
4.2MB
MD5bd20d333b6629f29d517085fbc4b3c11
SHA1dc6cda1698101f26bb7d2668137113834198d7b4
SHA25642c71d5b6cfb50d5ac1ee6d78bd27ddaa24a35111887729eb8839e53ac88e343
SHA512cd391b75546b22e06dc2085048285f70364a7439362b19c96f2e369844a57819f37f49493a45a33ce0c9442567defd40ef45536c135bd42e81b0a46ef780dfef