Analysis
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max time kernel
150s -
max time network
156s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-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 17 IoCs
resource yara_rule behavioral2/memory/2864-2-0x0000000002E30000-0x000000000371B000-memory.dmp family_glupteba behavioral2/memory/2864-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2864-74-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2864-89-0x0000000002E30000-0x000000000371B000-memory.dmp family_glupteba behavioral2/memory/4276-126-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-201-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-205-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-208-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-210-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-213-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-217-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-220-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-222-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-226-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-229-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-232-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2472-234-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4408 netsh.exe -
Executes dropped EXE 2 IoCs
pid Process 2472 csrss.exe 3420 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\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 opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe 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 created C:\Windows\rss\csrss.exe 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe File opened for modification C:\Windows\rss 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe -
pid Process 1524 powershell.exe 3740 powershell.exe 4772 powershell.exe 1276 powershell.exe 1448 powershell.exe 3732 powershell.exe 4092 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 2816 schtasks.exe 3096 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,-171 = "Central Daylight Time (Mexico)" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed 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\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs 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,-2611 = "Bougainville Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.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 Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates 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,-1472 = "Magadan Standard 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\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba 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\Microsoft\SystemCertificates\Root 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\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.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\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3740 powershell.exe 3740 powershell.exe 2864 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 2864 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4772 powershell.exe 4772 powershell.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 1276 powershell.exe 1276 powershell.exe 1448 powershell.exe 1448 powershell.exe 3732 powershell.exe 3732 powershell.exe 4092 powershell.exe 4092 powershell.exe 1524 powershell.exe 1524 powershell.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 2472 csrss.exe 2472 csrss.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 2472 csrss.exe 2472 csrss.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe 3420 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeDebugPrivilege 3740 powershell.exe Token: SeDebugPrivilege 2864 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Token: SeImpersonatePrivilege 2864 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe Token: SeDebugPrivilege 4772 powershell.exe Token: SeDebugPrivilege 1276 powershell.exe Token: SeDebugPrivilege 1448 powershell.exe Token: SeDebugPrivilege 3732 powershell.exe Token: SeDebugPrivilege 4092 powershell.exe Token: SeDebugPrivilege 1524 powershell.exe Token: SeSystemEnvironmentPrivilege 2472 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2864 wrote to memory of 3740 2864 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 81 PID 2864 wrote to memory of 3740 2864 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 81 PID 2864 wrote to memory of 3740 2864 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 81 PID 4276 wrote to memory of 4772 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 86 PID 4276 wrote to memory of 4772 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 86 PID 4276 wrote to memory of 4772 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 86 PID 4276 wrote to memory of 3636 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 88 PID 4276 wrote to memory of 3636 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 88 PID 3636 wrote to memory of 4408 3636 cmd.exe 90 PID 3636 wrote to memory of 4408 3636 cmd.exe 90 PID 4276 wrote to memory of 1276 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 91 PID 4276 wrote to memory of 1276 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 91 PID 4276 wrote to memory of 1276 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 91 PID 4276 wrote to memory of 1448 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 93 PID 4276 wrote to memory of 1448 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 93 PID 4276 wrote to memory of 1448 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 93 PID 4276 wrote to memory of 2472 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 95 PID 4276 wrote to memory of 2472 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 95 PID 4276 wrote to memory of 2472 4276 66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe 95 PID 2472 wrote to memory of 3732 2472 csrss.exe 96 PID 2472 wrote to memory of 3732 2472 csrss.exe 96 PID 2472 wrote to memory of 3732 2472 csrss.exe 96 PID 2472 wrote to memory of 4092 2472 csrss.exe 101 PID 2472 wrote to memory of 4092 2472 csrss.exe 101 PID 2472 wrote to memory of 4092 2472 csrss.exe 101 PID 2472 wrote to memory of 1524 2472 csrss.exe 104 PID 2472 wrote to memory of 1524 2472 csrss.exe 104 PID 2472 wrote to memory of 1524 2472 csrss.exe 104 PID 2472 wrote to memory of 3420 2472 csrss.exe 106 PID 2472 wrote to memory of 3420 2472 csrss.exe 106 -
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:2864 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3740
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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:4276 -
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:4772
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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:3636 -
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:4408
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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:1276
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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:1448
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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:2472 -
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:3732
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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:2816
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:2800
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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:4092
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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:1524
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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:3420
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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:3096
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD5d0c46cad6c0778401e21910bd6b56b70
SHA17be418951ea96326aca445b8dfe449b2bfa0dca6
SHA2569600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
SHA512057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD57a39d6711dff4d9e78fedb5c3d1cf941
SHA1aa95df82a11f1b0986e3b79516e6b629b4861ed3
SHA25684efef7541870e19adc505ed561a4d3673343082ec78c84abccd74b8b93da842
SHA51237e83372295383921aacf15ae990525125f527fe204d6c314e304adf135b5cb74e440598c7dcb8e0903d858c6edd17cb310dd2916bd7534062aa53453b7764fc
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD58fc875fcbe54e786fc42890f49063455
SHA1efea617f5f83aef365270fb3b1e7ed2f752ad5ef
SHA256af0319c9fd9e1bc3da711c5d4ec0dc6854e3600942c0c2541f47174cddadb09d
SHA512eef2cd4ffa3106948247ad48c5825535d126b3d8c25c2b2bac2d2660320d6aed88067b8f2fbbce0b3f0ab6b5effa359be9f22656b6eedb21f588d4cdea58be27
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD59fbb7ca13f00c7cf834af14ead112aea
SHA185f90b0bc74f0b8f83d7bc3306baa8a19589202d
SHA256df0f347a65ef332182c97393408f4e0ac64ff2e4c42d1b703eaec93d530b83e7
SHA512b2b1766b65611c9449ca6196893df41ed02de7dc6ef3bd579b5afd789c49667138dd489859a9cdbb648938f8222f2bc412b744474eef373d8ea10d45e1c7e38a
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5a57c6a1164ab82280671bb8b00df5534
SHA1276ff3106d6456873fbbff6f2596cdbd7132a2c5
SHA256f1eea7ea73157615a9b20a6b38aa44447ae83278e2a2afec89d6fbe91a2279a6
SHA512001bb89e4958313317e725fec37d0f56b8823f2413e8c3c1549f70b7d9e7211144f652a5e82768720732e8be9814af50d63debbefc5ec8ab0a224eb73c578cbc
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5d4b44d2e7192826bf5fe66af104043b8
SHA1f542191ce9bdfa28eafc113503539cc29c6e02cb
SHA256d8a5042812c8fa19b76cf4b6905f4f67d36140624ec5931649307bf03f1ee32e
SHA512e6fef08b002fc880734a906d3543484ea621e36bba6b220ea9f7bf12053636f1d53a64a34abde2a8f6c0268088d844f04ee9abc64c036f371b8fa2a14fbb2483
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Filesize
4.1MB
MD539d996857eeacf39c33ec907b00aefaf
SHA1618d7b7b56b3bc806b8e8e65dfdf82d66a216cb7
SHA25666d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882
SHA512136d3e5ce2e441d3716a93b0e196ff28c1e12c2406a025219fd6af9507509c74784173807557ec1f3a3e17ad6281c4389093ec424cc0ad9f1da1cfeddb304b31