Analysis
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max time kernel
150s -
max time network
150s -
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 22:24
Static task
static1
Behavioral task
behavioral1
Sample
2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe
Resource
win10v2004-20240426-en
General
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Target
2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe
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Size
4.2MB
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MD5
25199d55c9d415c843faa9ad9f60f561
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SHA1
2a469e110012160fc397280729b7a5aa01a17f03
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SHA256
2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30
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SHA512
067a570ee6b5f62aa7560dc272152a7cbc28dec7c4cbe3061a6f006a4674a31ed2a0c656cf2afc6c2d0482011f9b4dd03efd27e67d3f253826c75e9380f2fdb9
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SSDEEP
98304:3amOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG1b:3Ty8Jy4o9ecZxQhwo8IinPG1b
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral2/memory/468-2-0x0000000003F10000-0x00000000047FB000-memory.dmp family_glupteba behavioral2/memory/468-3-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/468-98-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/468-120-0x0000000003F10000-0x00000000047FB000-memory.dmp family_glupteba behavioral2/memory/2240-147-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-150-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-203-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-206-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-209-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-212-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-215-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-218-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-221-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-224-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-227-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-230-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-233-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/1524-236-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 5064 netsh.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 1524 csrss.exe 4452 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2878097196-921257239-309638238-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\S-1-5-21-2878097196-921257239-309638238-1000\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 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:
2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe -
Drops file in Windows directory 2 IoCs
Processes:
2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exedescription ioc process File opened for modification C:\Windows\rss 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe File created C:\Windows\rss\csrss.exe 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.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 3928 schtasks.exe 3088 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.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,-2431 = "Cuba Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates 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,-1891 = "Russia TZ 3 Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust 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,-221 = "Alaskan Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs 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,-262 = "GMT Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.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,-1472 = "Magadan Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.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,-661 = "Cen. Australia Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.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" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs 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,-2371 = "Easter Island Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\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\Disallowed powershell.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,-542 = "Myanmar Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exepowershell.exe2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 1780 powershell.exe 1780 powershell.exe 468 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 468 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 4776 powershell.exe 4776 powershell.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe 688 powershell.exe 688 powershell.exe 2612 powershell.exe 2612 powershell.exe 1844 powershell.exe 1844 powershell.exe 4504 powershell.exe 4504 powershell.exe 496 powershell.exe 496 powershell.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 1524 csrss.exe 1524 csrss.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 1524 csrss.exe 1524 csrss.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe 4452 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
powershell.exe2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exedescription pid process Token: SeDebugPrivilege 1780 powershell.exe Token: SeDebugPrivilege 468 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Token: SeImpersonatePrivilege 468 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe Token: SeDebugPrivilege 4776 powershell.exe Token: SeDebugPrivilege 688 powershell.exe Token: SeDebugPrivilege 2612 powershell.exe Token: SeDebugPrivilege 1844 powershell.exe Token: SeDebugPrivilege 4504 powershell.exe Token: SeDebugPrivilege 496 powershell.exe Token: SeSystemEnvironmentPrivilege 1524 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.execmd.execsrss.exedescription pid process target process PID 468 wrote to memory of 1780 468 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 468 wrote to memory of 1780 468 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 468 wrote to memory of 1780 468 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 4776 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 4776 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 4776 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 800 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe cmd.exe PID 2240 wrote to memory of 800 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe cmd.exe PID 800 wrote to memory of 5064 800 cmd.exe netsh.exe PID 800 wrote to memory of 5064 800 cmd.exe netsh.exe PID 2240 wrote to memory of 688 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 688 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 688 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 2612 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 2612 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 2612 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe powershell.exe PID 2240 wrote to memory of 1524 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe csrss.exe PID 2240 wrote to memory of 1524 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe csrss.exe PID 2240 wrote to memory of 1524 2240 2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe csrss.exe PID 1524 wrote to memory of 1844 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 1844 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 1844 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 4504 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 4504 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 4504 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 496 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 496 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 496 1524 csrss.exe powershell.exe PID 1524 wrote to memory of 4452 1524 csrss.exe injector.exe PID 1524 wrote to memory of 4452 1524 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\2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe"C:\Users\Admin\AppData\Local\Temp\2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe"C:\Users\Admin\AppData\Local\Temp\2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.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
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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
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C:\Windows\system32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
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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
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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
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\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
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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C:\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
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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
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z0azt1zw.zeb.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.logFilesize
2KB
MD5d0c46cad6c0778401e21910bd6b56b70
SHA17be418951ea96326aca445b8dfe449b2bfa0dca6
SHA2569600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
SHA512057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD5cbfdec55655cd0b7471b95c03ae587e9
SHA1e4001a113f105790998226b9e84b082ab3a3b02a
SHA256dacba2f335ebd3d4b17fe1627b086995db5ec310e604783eb11faed8c255b552
SHA512c7686a81d0368a298bc8daa74876ce9e0c017059acccb33d927f92c8f470a45aefb0c377196721508264284a5bc20cafc47744af829f44ec58a8f8ff75792517
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD536faebe9b70f197f1e9ab3809ee34c6e
SHA1e0e0701c61bf762d7f78ba74f02696c9c5d0dc76
SHA25637ed36547d576f8e93554fc20e2d508051da487aee448f5f5dee27dac6b14c74
SHA5127f25b430b3de1673c11b1929716420bf56b4016a6558189d25d20bb252bba30784968365e3f125d56185623ac3b36ea3b620ab5bd972097b7dfc5c6e07a71a8f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD576cb0e5c7d94b0462b0dbfc68ac8e297
SHA1e6767564e22a737241db275ad734261d8c0aaf5b
SHA256b36b12f58560e381c2f1b0823e37be4741fbd92481261439b84daa418d73e57a
SHA5121dead8262ff41aabc950c4905e6f73ac116253ea014f37539a50fe6a25bb66f4b201beec3545362b4f6ebf0ab12a6399ecfebc353732b735f01eec30560a9656
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD578028c9bb90bd1ec49b543db0f577fac
SHA18c4af38b63d57208d2f11bfa364e3ae4fc4955d6
SHA256d8390e3742084ff24b6c3e1a9e4b670f720c9e340564465099e25db8c36633a2
SHA5125da4e0554184dc055b2eb88238d6547e1ba4eab6b1de4dfb230e2587a09c2871aafd7d419f3216117de6a7408b7e22ab6514655eed273ea0231ed9729bca4477
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD5483841a6ddafc3b34335d3fcb9271300
SHA16dd5652c3de9310494a60432c2745ee5e66f3c0b
SHA2563463a3ab4f8dd8500a854781a39d67d57767d76fd36a4261aaad7ec3a3bcefc4
SHA5124360e6e5e9a28dc489759057acc30e806ee67a1ac7820377cd5ed88c85bce43ff7c5a61dff27eafcd1876acf1ecfed72735f11613edca67ad233d7ce5482afe7
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C:\Windows\rss\csrss.exeFilesize
4.2MB
MD525199d55c9d415c843faa9ad9f60f561
SHA12a469e110012160fc397280729b7a5aa01a17f03
SHA2562490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30
SHA512067a570ee6b5f62aa7560dc272152a7cbc28dec7c4cbe3061a6f006a4674a31ed2a0c656cf2afc6c2d0482011f9b4dd03efd27e67d3f253826c75e9380f2fdb9
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memory/468-1-0x00000000020F0000-0x00000000024EC000-memory.dmpFilesize
4.0MB
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memory/468-2-0x0000000003F10000-0x00000000047FB000-memory.dmpFilesize
8.9MB
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memory/468-99-0x00000000020F0000-0x00000000024EC000-memory.dmpFilesize
4.0MB
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memory/468-98-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/468-3-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/468-120-0x0000000003F10000-0x00000000047FB000-memory.dmpFilesize
8.9MB
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memory/496-187-0x0000000070B40000-0x0000000070E97000-memory.dmpFilesize
3.3MB
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memory/496-186-0x00000000709C0000-0x0000000070A0C000-memory.dmpFilesize
304KB
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memory/688-86-0x0000000005AC0000-0x0000000005E17000-memory.dmpFilesize
3.3MB
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memory/688-88-0x0000000070AA0000-0x0000000070AEC000-memory.dmpFilesize
304KB
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memory/688-89-0x0000000070CB0000-0x0000000071007000-memory.dmpFilesize
3.3MB
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memory/1524-203-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-230-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-150-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-233-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-236-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-227-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-224-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-218-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-206-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-209-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-212-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-221-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1524-215-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/1780-30-0x0000000004BF0000-0x0000000004C00000-memory.dmpFilesize
64KB
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memory/1780-29-0x0000000004BF0000-0x0000000004C00000-memory.dmpFilesize
64KB
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memory/1780-4-0x0000000002A30000-0x0000000002A66000-memory.dmpFilesize
216KB
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memory/1780-5-0x0000000074830000-0x0000000074FE1000-memory.dmpFilesize
7.7MB
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memory/1780-6-0x0000000005230000-0x000000000585A000-memory.dmpFilesize
6.2MB
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memory/1780-8-0x0000000004BF0000-0x0000000004C00000-memory.dmpFilesize
64KB
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memory/1780-7-0x0000000004BF0000-0x0000000004C00000-memory.dmpFilesize
64KB
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memory/1780-49-0x00000000075F0000-0x00000000075F8000-memory.dmpFilesize
32KB
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memory/1780-48-0x00000000075D0000-0x00000000075EA000-memory.dmpFilesize
104KB
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memory/1780-47-0x0000000007580000-0x0000000007595000-memory.dmpFilesize
84KB
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memory/1780-46-0x0000000007570000-0x000000000757E000-memory.dmpFilesize
56KB
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memory/1780-45-0x0000000007520000-0x0000000007531000-memory.dmpFilesize
68KB
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memory/1780-44-0x0000000007610000-0x00000000076A6000-memory.dmpFilesize
600KB
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memory/1780-43-0x0000000007500000-0x000000000750A000-memory.dmpFilesize
40KB
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memory/1780-42-0x00000000074C0000-0x00000000074DA000-memory.dmpFilesize
104KB
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memory/1780-9-0x0000000005170000-0x0000000005192000-memory.dmpFilesize
136KB
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memory/1780-11-0x00000000059C0000-0x0000000005A26000-memory.dmpFilesize
408KB
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memory/1780-41-0x0000000007B00000-0x000000000817A000-memory.dmpFilesize
6.5MB
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memory/1780-40-0x0000000007390000-0x0000000007434000-memory.dmpFilesize
656KB
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memory/1780-28-0x0000000004BF0000-0x0000000004C00000-memory.dmpFilesize
64KB
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memory/1780-10-0x0000000005950000-0x00000000059B6000-memory.dmpFilesize
408KB
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memory/1780-20-0x0000000005A30000-0x0000000005D87000-memory.dmpFilesize
3.3MB
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memory/1780-21-0x0000000005F10000-0x0000000005F2E000-memory.dmpFilesize
120KB
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memory/1780-52-0x0000000074830000-0x0000000074FE1000-memory.dmpFilesize
7.7MB
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memory/1780-22-0x0000000005F60000-0x0000000005FAC000-memory.dmpFilesize
304KB
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memory/1780-39-0x0000000007370000-0x000000000738E000-memory.dmpFilesize
120KB
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memory/1780-23-0x0000000006460000-0x00000000064A6000-memory.dmpFilesize
280KB
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memory/1780-25-0x000000007F6B0000-0x000000007F6C0000-memory.dmpFilesize
64KB
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memory/1780-24-0x0000000007310000-0x0000000007344000-memory.dmpFilesize
208KB
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memory/1780-26-0x0000000070AA0000-0x0000000070AEC000-memory.dmpFilesize
304KB
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memory/1780-27-0x0000000070C20000-0x0000000070F77000-memory.dmpFilesize
3.3MB
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memory/1844-136-0x0000000070AA0000-0x0000000070AEC000-memory.dmpFilesize
304KB
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memory/1844-137-0x0000000070C20000-0x0000000070F77000-memory.dmpFilesize
3.3MB
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memory/2240-147-0x0000000000400000-0x0000000001DFB000-memory.dmpFilesize
26.0MB
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memory/2612-110-0x0000000070AA0000-0x0000000070AEC000-memory.dmpFilesize
304KB
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memory/2612-111-0x0000000070C20000-0x0000000070F77000-memory.dmpFilesize
3.3MB
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memory/4504-162-0x00000000709C0000-0x0000000070A0C000-memory.dmpFilesize
304KB
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memory/4504-159-0x0000000005C80000-0x0000000005FD7000-memory.dmpFilesize
3.3MB
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memory/4504-161-0x0000000006340000-0x000000000638C000-memory.dmpFilesize
304KB
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memory/4504-175-0x0000000006000000-0x0000000006015000-memory.dmpFilesize
84KB
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memory/4504-163-0x0000000070B40000-0x0000000070E97000-memory.dmpFilesize
3.3MB
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memory/4504-172-0x0000000007440000-0x00000000074E4000-memory.dmpFilesize
656KB
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memory/4504-174-0x00000000077E0000-0x00000000077F1000-memory.dmpFilesize
68KB
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memory/4776-74-0x00000000072E0000-0x00000000072F5000-memory.dmpFilesize
84KB
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memory/4776-73-0x0000000007290000-0x00000000072A1000-memory.dmpFilesize
68KB
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memory/4776-72-0x0000000006F90000-0x0000000007034000-memory.dmpFilesize
656KB
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memory/4776-62-0x0000000070AA0000-0x0000000070AEC000-memory.dmpFilesize
304KB
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memory/4776-63-0x0000000070C20000-0x0000000070F77000-memory.dmpFilesize
3.3MB