Analysis
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max time kernel
300s -
max time network
299s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
24-05-2024 00:17
Static task
static1
Behavioral task
behavioral1
Sample
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe
Resource
win7-20231129-en
General
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Target
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe
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Size
4.1MB
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MD5
db9929fde15c1e2c903e87cda2c9f27d
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SHA1
ac75c268b2b7911c3ef9a556730561cec0c6f709
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SHA256
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8
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SHA512
cfb1e09d90c91f070cfe712dc9017816166f8e1bc10280d6a99c27b3c84f9f520924b3bc0209212943ceb88be42540c5b4c1c5b735b784ddbc9233bc11dccf1b
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SSDEEP
98304:ZqqJgO7W9SnF2QTYg7Hzo9TU2Df9e/pZ+O7BTR2yKUW:ZqqJgO7W9SnJ3gf8jHXKF
Malware Config
Signatures
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Glupteba payload 34 IoCs
Processes:
resource yara_rule behavioral2/memory/4180-2-0x0000000004B90000-0x000000000547B000-memory.dmp family_glupteba behavioral2/memory/4180-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4180-301-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4180-302-0x0000000004B90000-0x000000000547B000-memory.dmp family_glupteba behavioral2/memory/4180-299-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2160-1023-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1746-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1747-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1748-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1749-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1750-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1751-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1752-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1753-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1754-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1755-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1756-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1757-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1758-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1759-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1760-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1761-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1762-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1763-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1764-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1765-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1766-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1767-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1768-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1769-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1770-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1771-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1772-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba behavioral2/memory/2596-1773-0x0000000000400000-0x0000000002B08000-memory.dmp family_glupteba -
Processes:
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 4952 netsh.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid Process 2596 csrss.exe 500 injector.exe -
Processes:
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe = "0" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.execsrss.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
Processes:
csrss.exedescription ioc Process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File 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:
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe -
Drops file in Windows directory 2 IoCs
Processes:
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exedescription ioc Process File opened for modification C:\Windows\rss 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe File created C:\Windows\rss\csrss.exe 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 2208 powershell.exe 4708 powershell.exe 4332 powershell.exe 2540 powershell.exe 3096 powershell.exe 1944 powershell.exe 96 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 4364 schtasks.exe 1388 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
csrss.exepowershell.exepowershell.exepowershell.exe78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exepowershell.exepowershell.exepowershell.exenetsh.exedescription ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.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\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.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\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs 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\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.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\Disallowed\Certificates 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\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.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\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control netsh.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exepowershell.exe78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 1944 powershell.exe 1944 powershell.exe 1944 powershell.exe 4180 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 4180 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 96 powershell.exe 96 powershell.exe 96 powershell.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 2208 powershell.exe 2208 powershell.exe 2208 powershell.exe 4708 powershell.exe 4708 powershell.exe 4708 powershell.exe 4332 powershell.exe 4332 powershell.exe 4332 powershell.exe 2540 powershell.exe 2540 powershell.exe 2540 powershell.exe 3096 powershell.exe 3096 powershell.exe 3096 powershell.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 2596 csrss.exe 2596 csrss.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 2596 csrss.exe 2596 csrss.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe 500 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
powershell.exe78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exedescription pid Process Token: SeDebugPrivilege 1944 powershell.exe Token: SeDebugPrivilege 4180 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Token: SeImpersonatePrivilege 4180 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe Token: SeDebugPrivilege 96 powershell.exe Token: SeDebugPrivilege 2208 powershell.exe Token: SeDebugPrivilege 4708 powershell.exe Token: SeDebugPrivilege 4332 powershell.exe Token: SeDebugPrivilege 2540 powershell.exe Token: SeDebugPrivilege 3096 powershell.exe Token: SeSystemEnvironmentPrivilege 2596 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.execmd.execsrss.exedescription pid Process procid_target PID 4180 wrote to memory of 1944 4180 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 74 PID 4180 wrote to memory of 1944 4180 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 74 PID 4180 wrote to memory of 1944 4180 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 74 PID 2160 wrote to memory of 96 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 79 PID 2160 wrote to memory of 96 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 79 PID 2160 wrote to memory of 96 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 79 PID 2160 wrote to memory of 2264 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 81 PID 2160 wrote to memory of 2264 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 81 PID 2264 wrote to memory of 4952 2264 cmd.exe 83 PID 2264 wrote to memory of 4952 2264 cmd.exe 83 PID 2160 wrote to memory of 2208 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 84 PID 2160 wrote to memory of 2208 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 84 PID 2160 wrote to memory of 2208 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 84 PID 2160 wrote to memory of 4708 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 86 PID 2160 wrote to memory of 4708 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 86 PID 2160 wrote to memory of 4708 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 86 PID 2160 wrote to memory of 2596 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 88 PID 2160 wrote to memory of 2596 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 88 PID 2160 wrote to memory of 2596 2160 78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe 88 PID 2596 wrote to memory of 4332 2596 csrss.exe 89 PID 2596 wrote to memory of 4332 2596 csrss.exe 89 PID 2596 wrote to memory of 4332 2596 csrss.exe 89 PID 2596 wrote to memory of 2540 2596 csrss.exe 96 PID 2596 wrote to memory of 2540 2596 csrss.exe 96 PID 2596 wrote to memory of 2540 2596 csrss.exe 96 PID 2596 wrote to memory of 3096 2596 csrss.exe 98 PID 2596 wrote to memory of 3096 2596 csrss.exe 98 PID 2596 wrote to memory of 3096 2596 csrss.exe 98 PID 2596 wrote to memory of 500 2596 csrss.exe 100 PID 2596 wrote to memory of 500 2596 csrss.exe 100 -
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\78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe"C:\Users\Admin\AppData\Local\Temp\78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4180 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1944
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C:\Users\Admin\AppData\Local\Temp\78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe"C:\Users\Admin\AppData\Local\Temp\78c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8.exe"2⤵
- Windows security bypass
- Windows security modification
- 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:2160 -
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:96
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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:2264 -
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
- Modifies data under HKEY_USERS
PID:4952
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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:2208
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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:4708
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2596 -
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:4332
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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:4364
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1572
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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:2540
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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:3096
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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:500
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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:1388
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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
1B
MD5c4ca4238a0b923820dcc509a6f75849b
SHA1356a192b7913b04c54574d18c28d46e6395428ab
SHA2566b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
SHA5124dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a
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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
MD51c19c16e21c97ed42d5beabc93391fc5
SHA18ad83f8e0b3acf8dfbbf87931e41f0d664c4df68
SHA2561bcd97396c83babfe6c5068ba590d7a3f8b70e72955a9d1e4070648e404cbf05
SHA5127d18776d8f649b3d29c182ff03efc6cea8b527542ee55304980f24577aae8b64e37044407776e220984346c3998ace5f8853afa58c8b38407482a728e9495e0c
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize18KB
MD595dd93eb9531b6e63d21ee9259bce0df
SHA13c11fe54e9945bed1fa7cb3e76850dc69f2c018d
SHA25650aa8f586a55b825bd3dd35b25f2392e48bb4b82bebfe2ef93d714fb527714fa
SHA5126e11e05fdb527c3a86f6c681f9c79e7fcd9ebe0bf713df67771321c89fbd96bef73b1a0d43e3ba560fd4e617203afeb51f1da576af81c55f47de6edcb93961f4
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize18KB
MD5ea8b0c92f8864c41a3b872e5a1f1c076
SHA14fd7821962a3a138c9f569754b330dd5806f48fe
SHA256eb2e32f315706208703a546114446e253971a4b21c4ee1214bea882ea80a6b4a
SHA5125b45ec70f9b527c65b1928ba8288366580f42b34d9ed05312e342a370953ba3813d1a2fcfdc971f82cf0775a281ce124d310dad06b21aa6e7be4f67c312be4e0
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize18KB
MD529e5cab7fad76de257dbe9de310ac7e5
SHA1e59ab0513a1278f1527c46ca0ac6bc8dadaf782f
SHA2562928ce2f44f1c8c2803b3dc8da9daac8ed30c71b66c7ac6f874ee3ea0e25eb77
SHA5128d15601083dc894f7487044df3804e617d6927aa5b1763f800cf0ee9fbbe6424d8c18f1d917a468d8a5e4312865057781583f9f7f14160f5480ceff115980f56
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize18KB
MD53c399946f465c3c4cfb07e9101f8af7e
SHA19eb549464349a64435df6cf0b771b4e92338ffa8
SHA256bd2cd54d78bf9b7f76d965cc674d30dac9b6cf4cc50495a600e41bed0c8e8bb0
SHA51258d39b992d73faf36c4c320518da341e279dea1ffad1646715a700c94dc66f2a800308c677199cab8f8cc5d82dcd6e50c46b363d2ee77553f861d4c30d86fc6c
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize18KB
MD5b3c3e5d9caf3f1d4cfbc53f56d1ed90c
SHA1a5c9014db956c309fcb3da36df0b1b1c27a1cdee
SHA256440fddbf2de36d840a7ba713383d04cb0f1ec191ea99554a2e0255e2c0179147
SHA5126bf228bc387038f414e87cc1625d6bca9c00380a1ee11b0e1690d269c08df900b39bdbedf33b89495402ac3bb8b75f17db991f3cbfc5b267f316c19648da0909
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Filesize
4.1MB
MD5db9929fde15c1e2c903e87cda2c9f27d
SHA1ac75c268b2b7911c3ef9a556730561cec0c6f709
SHA25678c75105e63c0447bc9067bd4dab15d13b9a3a1b81a64814e49612e070cab2f8
SHA512cfb1e09d90c91f070cfe712dc9017816166f8e1bc10280d6a99c27b3c84f9f520924b3bc0209212943ceb88be42540c5b4c1c5b735b784ddbc9233bc11dccf1b