Analysis
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max time kernel
149s -
max time network
145s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
16-05-2024 04:28
Static task
static1
Behavioral task
behavioral1
Sample
8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe
Resource
win10v2004-20240426-en
General
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Target
8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe
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Size
4.1MB
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MD5
c99d47cc28fd0b0551b8be3165ca6e86
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SHA1
d59c2d1046e7086afd9ee9dceba8630668e6d317
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SHA256
8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1
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SHA512
c7c46507ad23b2262b222fab91d88d56c63b82dc754d87bc42a93170e7b2809f1bf751b580d18fbf448d0639a74c270bb76712abb2fdec640279696191eb06f2
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SSDEEP
98304:p96GAmuNBigEkoqfZTwC6uGlBZNljS4jcu:pI9hoq9wC6uGlB/xgu
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral2/memory/3148-2-0x0000000002E30000-0x000000000371B000-memory.dmp family_glupteba behavioral2/memory/3148-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3148-119-0x0000000002E30000-0x000000000371B000-memory.dmp family_glupteba behavioral2/memory/3148-117-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4968-192-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-199-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-212-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-216-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-220-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-224-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-228-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-232-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-236-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-240-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-244-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-248-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-252-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3312-256-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 2560 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 3312 csrss.exe 1064 injector.exe 4220 windefender.exe 768 windefender.exe -
Processes:
resource yara_rule behavioral2/files/0x000200000002a9e2-202.dat upx behavioral2/memory/4220-204-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/768-207-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4220-209-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/768-214-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/768-222-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
csrss.exe8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe Set value (str) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.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 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 -
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:
8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe -
Drops file in Windows directory 4 IoCs
Processes:
8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.execsrss.exedescription ioc Process File opened for modification C:\Windows\rss 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe File created C:\Windows\rss\csrss.exe 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe File created C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\windefender.exe csrss.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exepid Process 4684 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 4932 powershell.exe 3664 powershell.exe 1456 powershell.exe 3048 powershell.exe 1752 powershell.exe 904 powershell.exe 2016 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 1000 schtasks.exe 4868 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exepowershell.exepowershell.exewindefender.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.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\@tzres.dll,-2751 = "Tomsk Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-841 = "Argentina Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-871 = "Pakistan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-961 = "Paraguay Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs 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,-2141 = "Transbaikal Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.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\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-391 = "Arab Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-411 = "E. Africa Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2842 = "Saratov Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-671 = "AUS Eastern Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-532 = "Sri Lanka Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-131 = "US Eastern Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.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,-722 = "Central Pacific Standard Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-221 = "Alaskan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-451 = "Caucasus Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-282 = "Central Europe Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1822 = "Russia TZ 1 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-3142 = "South Sudan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-3141 = "South Sudan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.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\AutoDetect = "0" 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\@tzres.dll,-251 = "Dateline Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-301 = "Romance Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-362 = "GTB Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-121 = "SA Pacific Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2942 = "Sao Tome Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-892 = "Morocco Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.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\@tzres.dll,-1661 = "Bahia Daylight Time" windefender.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exepowershell.exe8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 2016 powershell.exe 2016 powershell.exe 3148 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 3148 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4932 powershell.exe 4932 powershell.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 3664 powershell.exe 3664 powershell.exe 1456 powershell.exe 1456 powershell.exe 3048 powershell.exe 3048 powershell.exe 1752 powershell.exe 1752 powershell.exe 904 powershell.exe 904 powershell.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 3312 csrss.exe 3312 csrss.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 3312 csrss.exe 3312 csrss.exe 1064 injector.exe 1064 injector.exe 3312 csrss.exe 3312 csrss.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe 1064 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exe8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 2016 powershell.exe Token: SeDebugPrivilege 3148 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Token: SeImpersonatePrivilege 3148 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe Token: SeDebugPrivilege 4932 powershell.exe Token: SeDebugPrivilege 3664 powershell.exe Token: SeDebugPrivilege 1456 powershell.exe Token: SeDebugPrivilege 3048 powershell.exe Token: SeDebugPrivilege 1752 powershell.exe Token: SeDebugPrivilege 904 powershell.exe Token: SeSystemEnvironmentPrivilege 3312 csrss.exe Token: SeSecurityPrivilege 4684 sc.exe Token: SeSecurityPrivilege 4684 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 3148 wrote to memory of 2016 3148 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 81 PID 3148 wrote to memory of 2016 3148 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 81 PID 3148 wrote to memory of 2016 3148 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 81 PID 4968 wrote to memory of 4932 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 86 PID 4968 wrote to memory of 4932 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 86 PID 4968 wrote to memory of 4932 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 86 PID 4968 wrote to memory of 992 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 88 PID 4968 wrote to memory of 992 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 88 PID 992 wrote to memory of 2560 992 cmd.exe 90 PID 992 wrote to memory of 2560 992 cmd.exe 90 PID 4968 wrote to memory of 3664 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 91 PID 4968 wrote to memory of 3664 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 91 PID 4968 wrote to memory of 3664 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 91 PID 4968 wrote to memory of 1456 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 93 PID 4968 wrote to memory of 1456 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 93 PID 4968 wrote to memory of 1456 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 93 PID 4968 wrote to memory of 3312 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 95 PID 4968 wrote to memory of 3312 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 95 PID 4968 wrote to memory of 3312 4968 8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe 95 PID 3312 wrote to memory of 3048 3312 csrss.exe 96 PID 3312 wrote to memory of 3048 3312 csrss.exe 96 PID 3312 wrote to memory of 3048 3312 csrss.exe 96 PID 3312 wrote to memory of 1752 3312 csrss.exe 102 PID 3312 wrote to memory of 1752 3312 csrss.exe 102 PID 3312 wrote to memory of 1752 3312 csrss.exe 102 PID 3312 wrote to memory of 904 3312 csrss.exe 104 PID 3312 wrote to memory of 904 3312 csrss.exe 104 PID 3312 wrote to memory of 904 3312 csrss.exe 104 PID 3312 wrote to memory of 1064 3312 csrss.exe 106 PID 3312 wrote to memory of 1064 3312 csrss.exe 106 PID 4220 wrote to memory of 4552 4220 windefender.exe 112 PID 4220 wrote to memory of 4552 4220 windefender.exe 112 PID 4220 wrote to memory of 4552 4220 windefender.exe 112 PID 4552 wrote to memory of 4684 4552 cmd.exe 113 PID 4552 wrote to memory of 4684 4552 cmd.exe 113 PID 4552 wrote to memory of 4684 4552 cmd.exe 113 -
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\8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe"C:\Users\Admin\AppData\Local\Temp\8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3148 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2016
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C:\Users\Admin\AppData\Local\Temp\8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.exe"C:\Users\Admin\AppData\Local\Temp\8f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1.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:4968 -
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:4932
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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:992 -
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:2560
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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:3664
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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:1456
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3312 -
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:3048
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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:1000
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:2832
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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:1752
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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:904
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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:1064
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4868
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4220 -
C:\Windows\SysWOW64\cmd.execmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)5⤵
- Suspicious use of WriteProcessMemory
PID:4552 -
C:\Windows\SysWOW64\sc.exesc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)6⤵
- Launches sc.exe
- Suspicious use of AdjustPrivilegeToken
PID:4684
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:768
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
MD5c599d43e51403871d5ffc97a58cd8e28
SHA12160f0f77858667f6a68e314d210b84165573532
SHA256c809146344316f58643c36e600eaaff9db31fb89eaa886e2a250912b05f937f7
SHA51219c6cf68d734a4fb9776c1a438f63430c64812566b60179aae2bdd5baf976282f5b9de2cddad244e912f1eaeeb7b240d06924d359ff60a19837dd66168946353
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5a5572e6aa684839951bb3c513b573da3
SHA15415a2bd11833e40315ccbd2e6d9e27b07e84211
SHA25644cabe14ac5fece787d5a146496b44218d97dfbd48801ff941a75b0175401636
SHA5122c14a568c3e6fd554542113822ed0e8e7dfa58345db5723dcabc7d50f0386b23ced0a3e5344cbe3927cfbfabe02f8a3111e44ca15c1a765f6fd293b34b024e2c
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5f1101e488bbf31332a88e66e6abb29c6
SHA1a1990020585a377f422effa936b58da6d873e763
SHA25638b6212ebe11d7a1fa108ca4e3140920bc06ed530628d1cff138b27832d61e90
SHA5120d58659930c468dc6b27f082510e80fc19786e1028f3f68387ad08699b65d0375bf3450372e30ffd5dc406c190b50cef2e09acc9cc3530930d5333acc420a758
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5bfb476f3ad9b57817404e5fd8684d610
SHA1be9761ae584700fa8cb767f0c093d90716c78b5c
SHA2567b053dfebc003e7c1487e32e7e4aaa0d3058ac1da57322a3593ada09249b5f94
SHA51236092943ca785e061d701b88129de7bc66bcf72292dab9a14d771459216405444d638784c347894e6200166c33784c0e43255d5972108fe89d7e0ea2cbe4bf05
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5a9a9a44f7ed2c473e8c70d428514f4b5
SHA183901016a34c03a2348672d8b087d834f36017af
SHA25690d62d559b804a63359d5a02264e89b55719693291e05d1db6a449b071ceb131
SHA512c1ff662fec45577ffd82920fd104c6efdb59a8e918e30c7003ddd939f38d1a31b3344f808b9301f8d2a40f929f61c01f9662bba6cf5a55356dca064f6fa189c1
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Filesize
4.1MB
MD5c99d47cc28fd0b0551b8be3165ca6e86
SHA1d59c2d1046e7086afd9ee9dceba8630668e6d317
SHA2568f33621dd9de316295b7d7bde8c334aa0f513d844f2ab5fb2ce86b44297ec5b1
SHA512c7c46507ad23b2262b222fab91d88d56c63b82dc754d87bc42a93170e7b2809f1bf751b580d18fbf448d0639a74c270bb76712abb2fdec640279696191eb06f2
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec