Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
16/05/2024, 12:25
Static task
static1
Behavioral task
behavioral1
Sample
66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe
Resource
win10v2004-20240508-en
General
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Target
66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe
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Size
4.1MB
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MD5
39d996857eeacf39c33ec907b00aefaf
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SHA1
618d7b7b56b3bc806b8e8e65dfdf82d66a216cb7
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SHA256
66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882
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SHA512
136d3e5ce2e441d3716a93b0e196ff28c1e12c2406a025219fd6af9507509c74784173807557ec1f3a3e17ad6281c4389093ec424cc0ad9f1da1cfeddb304b31
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SSDEEP
98304:l/lx2VB4FLDQS1OmkYbRsTncIxTvyO2P5x7YbDUU8K:VlgkYS1OmbburVLyO2P5x7Yb40
Malware Config
Signatures
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Glupteba payload 19 IoCs
resource yara_rule behavioral1/memory/2460-2-0x0000000002D40000-0x000000000362B000-memory.dmp family_glupteba behavioral1/memory/2460-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3456-56-0x0000000002D30000-0x000000000361B000-memory.dmp family_glupteba behavioral1/memory/2460-81-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2460-108-0x0000000002D40000-0x000000000362B000-memory.dmp family_glupteba behavioral1/memory/3456-133-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3456-135-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-213-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-219-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-221-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-223-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-226-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-227-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-229-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-231-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-234-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-235-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-237-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4856-239-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4516 netsh.exe -
Executes dropped EXE 2 IoCs
pid Process 4856 csrss.exe 3088 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\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.
description ioc Process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
description ioc Process File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
description ioc Process File opened (read-only) \??\VBoxMiniRdrDN 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\rss 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe File created C:\Windows\rss\csrss.exe 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe -
pid Process 4312 powershell.exe 1724 powershell.exe 4512 powershell.exe 2336 powershell.exe 624 powershell.exe 3820 powershell.exe 2628 powershell.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 392 schtasks.exe 3116 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.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\ProxyBypass = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.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\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates 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\ProxyBypass = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.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\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs 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\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4512 powershell.exe 4512 powershell.exe 2460 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 2460 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 2336 powershell.exe 2336 powershell.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 624 powershell.exe 624 powershell.exe 3820 powershell.exe 3820 powershell.exe 2628 powershell.exe 2628 powershell.exe 4312 powershell.exe 4312 powershell.exe 1724 powershell.exe 1724 powershell.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 4856 csrss.exe 4856 csrss.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 4856 csrss.exe 4856 csrss.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe 3088 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeDebugPrivilege 4512 powershell.exe Token: SeDebugPrivilege 2460 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Token: SeImpersonatePrivilege 2460 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Token: SeDebugPrivilege 2336 powershell.exe Token: SeDebugPrivilege 624 powershell.exe Token: SeDebugPrivilege 3820 powershell.exe Token: SeDebugPrivilege 2628 powershell.exe Token: SeDebugPrivilege 4312 powershell.exe Token: SeDebugPrivilege 1724 powershell.exe Token: SeSystemEnvironmentPrivilege 4856 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2460 wrote to memory of 4512 2460 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 87 PID 2460 wrote to memory of 4512 2460 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 87 PID 2460 wrote to memory of 4512 2460 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 87 PID 3456 wrote to memory of 2336 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 96 PID 3456 wrote to memory of 2336 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 96 PID 3456 wrote to memory of 2336 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 96 PID 3456 wrote to memory of 3684 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 99 PID 3456 wrote to memory of 3684 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 99 PID 3684 wrote to memory of 4516 3684 cmd.exe 101 PID 3684 wrote to memory of 4516 3684 cmd.exe 101 PID 3456 wrote to memory of 624 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 102 PID 3456 wrote to memory of 624 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 102 PID 3456 wrote to memory of 624 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 102 PID 3456 wrote to memory of 3820 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 104 PID 3456 wrote to memory of 3820 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 104 PID 3456 wrote to memory of 3820 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 104 PID 3456 wrote to memory of 4856 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 106 PID 3456 wrote to memory of 4856 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 106 PID 3456 wrote to memory of 4856 3456 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 106 PID 4856 wrote to memory of 2628 4856 csrss.exe 107 PID 4856 wrote to memory of 2628 4856 csrss.exe 107 PID 4856 wrote to memory of 2628 4856 csrss.exe 107 PID 4856 wrote to memory of 4312 4856 csrss.exe 113 PID 4856 wrote to memory of 4312 4856 csrss.exe 113 PID 4856 wrote to memory of 4312 4856 csrss.exe 113 PID 4856 wrote to memory of 1724 4856 csrss.exe 115 PID 4856 wrote to memory of 1724 4856 csrss.exe 115 PID 4856 wrote to memory of 1724 4856 csrss.exe 115 PID 4856 wrote to memory of 3088 4856 csrss.exe 118 PID 4856 wrote to memory of 3088 4856 csrss.exe 118 -
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\66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe"C:\Users\Admin\AppData\Local\Temp\66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2460 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4512
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C:\Users\Admin\AppData\Local\Temp\66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe"C:\Users\Admin\AppData\Local\Temp\66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.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:3456 -
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:2336
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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:3684 -
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:4516
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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:624
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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:3820
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4856 -
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:2628
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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:392
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1368
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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:4312
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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:1724
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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:3088
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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:3116
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD54a603392beda3563df2a5945245555fe
SHA12fc3e55c1187abbf72eee5e8d09fbddc7427fb47
SHA256143b8e8029685ecb0fd97042dcc5913272373d6b095e1581c103b266146561ba
SHA512f67399f87c7afd3ab0e7b28dff10a2bb2a0a47bfda4e11b3c303dc5d30efe9eae69f57c52c410028c2767d65baf035ab7eb7af52df56c42affd81aed1905fb8a
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD51debe6f0b8a6dc9dae7aff49c1b79c98
SHA177b67a675f75e3b45abe3080870f7cd930c26ad5
SHA2569761503aa48d693c39ed9aa7cd807862ae5b0758d62c5d0dc460b9f087a1be56
SHA5129db40b70bbcb6fe176dcd93a32c2cf725d764d579f2e59ab2f90008a958c5fc51636ca05efbb469659decdb7dee2e47946ff1a869881fe1b431f9710a807854e
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD50b5cf515dd767c3e36e577e4b53846f8
SHA1e47a58e3d15f1eaeae9e2c7b282d9d72b0b00eb7
SHA256d8125ce02cab33469e9a333e1faa849821d73348dacd0e69ae37fea260e161e3
SHA5129da2648dd7d282f81be6ebb5eed86ec708887b7a2e777c345677d8ec8b534952c706e16cd8d04e25dad28ef0fb15b3cf6fdcb03b0015c4ec894259815048d6ee
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD56e1d1ee48d5e7a1792fea280593ddd7b
SHA15014824a6aff0f400cc5cbfb316492c5dc107653
SHA2567254db2b50f304436ae2d255d98823ad7d01bdc2dce3575b06e8ba7918b83f63
SHA5124c31dcd01f3379d499b11448058071f3dc668089955b2fa9dbaadb33ad91ccdf497c30cac76d78827328fbd1e3dc73122fb341e8e94ef63b87e45af7582d52ce
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD541cdeff337396b2ef45f0c89f7c5067a
SHA118d5e11973cee4a708cb53835b0a33de6b0749e3
SHA256af7d6eb62a086c1224b15e2796b81541c9f14c5109d41b887ac3539c079e641f
SHA512d21635893569fcfa0c2c8abcb8a5c6e7f98f8e02b726292efe82b1f6f2b0d8adfb3726af8a99ef3cabb47c4bacbfc0ad4b7269b0903886324370453f7507ee25
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Filesize
4.1MB
MD539d996857eeacf39c33ec907b00aefaf
SHA1618d7b7b56b3bc806b8e8e65dfdf82d66a216cb7
SHA25666d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882
SHA512136d3e5ce2e441d3716a93b0e196ff28c1e12c2406a025219fd6af9507509c74784173807557ec1f3a3e17ad6281c4389093ec424cc0ad9f1da1cfeddb304b31