glupteba | 960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9

Analysis

max time kernel
29s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20-04-2024 21:23

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General

Target

960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Size

4.2MB
MD5

e30504e89f111a4003523547709abd18
SHA1

a7fbeeff802197a2544026e2718c8f7c211cfa01
SHA256

960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9
SHA512

30e3adf560fc74ef8b86c923c298223f146a601b60fec02071735f29d4ca7cb1ed51a44132bc664baf7e17edba0a9ce0a9291aa56ae11d3c7d40ded75344cf88
SSDEEP

98304:6B6TE4JDSTIitXqfSjBwF+v4rSSNjcdSqGUwT7RQU7O2:HTFmTI8qKjKFA4r+dAh7RQUf

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit

Malware Config

Signatures

Glupteba
Glupteba is a modular loader written in Golang with various components.
loader dropper glupteba

Glupteba payload 7 IoCs

Processes:

resource	yara_rule
behavioral1/memory/744-2-0x0000000003FF0000-0x00000000048DB000-memory.dmp	family_glupteba
behavioral1/memory/744-3-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral1/memory/1288-57-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral1/memory/744-58-0x0000000003FF0000-0x00000000048DB000-memory.dmp	family_glupteba
behavioral1/memory/744-72-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral1/memory/1288-185-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral1/memory/4396-254-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

4444 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

4396 csrss.exe
3144 injector.exe

pid	process
4444	netsh.exe

pid	process
4396	csrss.exe
3144	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\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.
discovery

Query Registry
T1012
Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
rootkit evasion

Processes:

csrss.exe

description ioc process

File opened for modification \??\WinMonFS csrss.exe

description	ioc	process
File opened for modification	\??\WinMonFS	csrss.exe

Drops file in System32 directory 7 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

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 opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery
T1082

Processes:

960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe

Drops file in Windows directory 2 IoCs

Processes:

960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe

description	ioc	process
File created	C:\Windows\rss\csrss.exe	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
File opened for modification	C:\Windows\rss	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

4336 schtasks.exe
4220 schtasks.exe

pid	process
4336	schtasks.exe
4220	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\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\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe

Suspicious behavior: EnumeratesProcesses 53 IoCs

Processes:

powershell.exe960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exepowershell.exe960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exe

pid	process
1444	powershell.exe
1444	powershell.exe
744	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
744	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
4232	powershell.exe
4232	powershell.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
4772	powershell.exe
4772	powershell.exe
4772	powershell.exe
4812	powershell.exe
4812	powershell.exe
4812	powershell.exe
3336	powershell.exe
3336	powershell.exe
3336	powershell.exe
3688	powershell.exe
3688	powershell.exe
3688	powershell.exe
3260	powershell.exe
3260	powershell.exe
3260	powershell.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
4396	csrss.exe
4396	csrss.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
4396	csrss.exe
4396	csrss.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe
3144	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

powershell.exe960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	1444	powershell.exe
Token: SeDebugPrivilege	744	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Token: SeImpersonatePrivilege	744	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
Token: SeDebugPrivilege	4232	powershell.exe
Token: SeDebugPrivilege	4772	powershell.exe
Token: SeDebugPrivilege	4812	powershell.exe
Token: SeDebugPrivilege	3336	powershell.exe
Token: SeDebugPrivilege	3688	powershell.exe
Token: SeDebugPrivilege	3260	powershell.exe
Token: SeSystemEnvironmentPrivilege	4396	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.execmd.execsrss.exe

description	pid	process	target process
PID 744 wrote to memory of 1444	744	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 744 wrote to memory of 1444	744	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 744 wrote to memory of 1444	744	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4232	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4232	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4232	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 1728	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	cmd.exe
PID 1288 wrote to memory of 1728	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	cmd.exe
PID 1728 wrote to memory of 4444	1728	cmd.exe	netsh.exe
PID 1728 wrote to memory of 4444	1728	cmd.exe	netsh.exe
PID 1288 wrote to memory of 4772	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4772	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4772	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4812	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4812	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4812	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	powershell.exe
PID 1288 wrote to memory of 4396	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	csrss.exe
PID 1288 wrote to memory of 4396	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	csrss.exe
PID 1288 wrote to memory of 4396	1288	960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe	csrss.exe
PID 4396 wrote to memory of 3336	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3336	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3336	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3688	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3688	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3688	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3260	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3260	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3260	4396	csrss.exe	powershell.exe
PID 4396 wrote to memory of 3144	4396	csrss.exe	injector.exe
PID 4396 wrote to memory of 3144	4396	csrss.exe	injector.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
"C:\Users\Admin\AppData\Local\Temp\960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1444

C:\Users\Admin\AppData\Local\Temp\960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.exe
"C:\Users\Admin\AppData\Local\Temp\960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9.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:1288

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4232

C:\Windows\system32\cmd.exe
C:\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:1728

C:\Windows\system32\netsh.exe
netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
4⤵
- Modifies Windows Firewall
PID:4444

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4772

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4812

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4396

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3336

C:\Windows\SYSTEM32\schtasks.exe
schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
4⤵
- Creates scheduled task(s)
PID:4336

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:5028

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3688

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3260

C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:3144

C:\Windows\SYSTEM32\schtasks.exe
schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
4⤵
- Creates scheduled task(s)
PID:4220

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i2tvzenc.epj.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
9c56df16650356dae6fac7468c9da1e5

SHA1
edf5ca6ba74db074dab035cfe3dfe3713f0b3be8

SHA256
eccc70fc19a49a39dac87f2e7f77ba808899d208f66bfb2774d32a8440367cc8

SHA512
9df30c89e63196dafa500f8ea81f7714053ed5912ebd4164dbb4dd19be1313ea20540b2959c6d80b6df81691a71432169a68a13818ab55b42e90cc857b7e0821

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
c08752375617edd8769f39881e8a08b0

SHA1
0be15de13087f988277a6a32b2931a7a226c775b

SHA256
c1d281c203a4e61dbdd4b14b189aa0abded11e426c348502c9ec8a18cc3cb3c6

SHA512
9cdb944359c3607221d03ae49252aa6e0c02e0e6a95e22a6c46b52d5cf370df72c7ab052f5ac718a697b140414fb94178d6363de7b4eb56fee83c832dd5044fd

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
93932f1495097490000fd1f0d86f7cee

SHA1
2eada8404c6370d4df83d4c09f40f15d644c72be

SHA256
12fe3d171ccdbb23b8a8c859e823878a914138e5996754fd8b0f70a0210d62d9

SHA512
663f0f0380f9a62e8220f9fa0119edc8433ec7dc6e3ddada491f1071bb3fd4f0ab7d8c2e42dc80244e2352d22d738a58049be699ceb0d9de2711175d224b138d

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
10b61e3a291721d160c28720fbbf682e

SHA1
d9f4ef7e002f1e3aa9c9da7af7aa44707f855adf

SHA256
92bf5c30746479a00ab88485e13df87db866b74afa72f6d0f347a51b52386e84

SHA512
688cf25563ba9961929d9223bcdd7be5a03e6a04bd494fe12268f9f94d3a68a8a3ac4b28a353f00b4cd7034b513d13b64f0c5a5cd45d2130489b626af02eeafc

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
d13bb5424710e2799e414ad8c7cbcc68

SHA1
7441acee40cbc082c6b0005cece63b357ec74702

SHA256
27bc405a5ecc952f78ef01b25204b09615a39dbc03a44a0690c4d56f888823f2

SHA512
971aca33add852586d9325e7313a272494ce1e788bf3dff5b793be6d814e62b82179eb864edf823ada69c748eaffed36a678a4ffc4b8d98a6b69670311f13c41

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.2MB

MD5
e30504e89f111a4003523547709abd18

SHA1
a7fbeeff802197a2544026e2718c8f7c211cfa01

SHA256
960ba0887cf5903bfc5d17e74447a1ddf4d65d7f0737e7152831893f9cf087b9

SHA512
30e3adf560fc74ef8b86c923c298223f146a601b60fec02071735f29d4ca7cb1ed51a44132bc664baf7e17edba0a9ce0a9291aa56ae11d3c7d40ded75344cf88

Download Submit
memory/744-3-0x0000000000400000-0x0000000001DF9000-memory.dmp

Filesize
26.0MB

Download
memory/744-2-0x0000000003FF0000-0x00000000048DB000-memory.dmp

Filesize
8.9MB

Download
memory/744-72-0x0000000000400000-0x0000000001DF9000-memory.dmp

Filesize
26.0MB

Download
memory/744-58-0x0000000003FF0000-0x00000000048DB000-memory.dmp

Filesize
8.9MB

Download
memory/744-56-0x0000000003BF0000-0x0000000003FED000-memory.dmp

Filesize
4.0MB

Download
memory/744-1-0x0000000003BF0000-0x0000000003FED000-memory.dmp

Filesize
4.0MB

Download
memory/1288-185-0x0000000000400000-0x0000000001DF9000-memory.dmp

Filesize
26.0MB

Download
memory/1288-55-0x0000000003B00000-0x0000000003F03000-memory.dmp

Filesize
4.0MB

Download
memory/1288-117-0x0000000003B00000-0x0000000003F03000-memory.dmp

Filesize
4.0MB

Download
memory/1288-57-0x0000000000400000-0x0000000001DF9000-memory.dmp

Filesize
26.0MB

Download
memory/1444-26-0x0000000008360000-0x00000000089DA000-memory.dmp

Filesize
6.5MB

Download
memory/1444-29-0x0000000007EC0000-0x0000000007EF2000-memory.dmp

Filesize
200KB

Download
memory/1444-42-0x0000000007F20000-0x0000000007FC3000-memory.dmp

Filesize
652KB

Download
memory/1444-43-0x0000000005500000-0x0000000005510000-memory.dmp

Filesize
64KB

Download
memory/1444-31-0x0000000070B60000-0x0000000070EB4000-memory.dmp

Filesize
3.3MB

Download
memory/1444-30-0x00000000709E0000-0x0000000070A2C000-memory.dmp

Filesize
304KB

Download
memory/1444-28-0x000000007F5D0000-0x000000007F5E0000-memory.dmp

Filesize
64KB

Download
memory/1444-44-0x0000000008010000-0x000000000801A000-memory.dmp

Filesize
40KB

Download
memory/1444-45-0x0000000008120000-0x00000000081B6000-memory.dmp

Filesize
600KB

Download
memory/1444-46-0x0000000008020000-0x0000000008031000-memory.dmp

Filesize
68KB

Download
memory/1444-47-0x0000000008060000-0x000000000806E000-memory.dmp

Filesize
56KB

Download
memory/1444-49-0x00000000080D0000-0x00000000080EA000-memory.dmp

Filesize
104KB

Download
memory/1444-50-0x00000000080C0000-0x00000000080C8000-memory.dmp

Filesize
32KB

Download
memory/1444-48-0x0000000008080000-0x0000000008094000-memory.dmp

Filesize
80KB

Download
memory/1444-53-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/1444-22-0x0000000006940000-0x000000000695E000-memory.dmp

Filesize
120KB

Download
memory/1444-27-0x0000000007D00000-0x0000000007D1A000-memory.dmp

Filesize
104KB

Download
memory/1444-25-0x0000000007C60000-0x0000000007CD6000-memory.dmp

Filesize
472KB

Download
memory/1444-24-0x0000000007AB0000-0x0000000007AF4000-memory.dmp

Filesize
272KB

Download
memory/1444-4-0x0000000005370000-0x00000000053A6000-memory.dmp

Filesize
216KB

Download
memory/1444-5-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/1444-7-0x0000000005500000-0x0000000005510000-memory.dmp

Filesize
64KB

Download
memory/1444-6-0x0000000005500000-0x0000000005510000-memory.dmp

Filesize
64KB

Download
memory/1444-23-0x0000000006980000-0x00000000069CC000-memory.dmp

Filesize
304KB

Download
memory/1444-8-0x0000000005B40000-0x0000000006168000-memory.dmp

Filesize
6.2MB

Download
memory/1444-9-0x0000000005A80000-0x0000000005AA2000-memory.dmp

Filesize
136KB

Download
memory/1444-10-0x0000000006170000-0x00000000061D6000-memory.dmp

Filesize
408KB

Download
memory/1444-41-0x0000000007F00000-0x0000000007F1E000-memory.dmp

Filesize
120KB

Download
memory/1444-11-0x00000000062D0000-0x0000000006336000-memory.dmp

Filesize
408KB

Download
memory/1444-21-0x0000000006340000-0x0000000006694000-memory.dmp

Filesize
3.3MB

Download
memory/4232-74-0x0000000071160000-0x00000000714B4000-memory.dmp

Filesize
3.3MB

Download
memory/4232-84-0x0000000007470000-0x0000000007513000-memory.dmp

Filesize
652KB

Download
memory/4232-60-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4232-71-0x0000000002D60000-0x0000000002D70000-memory.dmp

Filesize
64KB

Download
memory/4232-61-0x0000000002D60000-0x0000000002D70000-memory.dmp

Filesize
64KB

Download
memory/4232-87-0x00000000077F0000-0x0000000007804000-memory.dmp

Filesize
80KB

Download
memory/4232-90-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4232-59-0x0000000005C60000-0x0000000005FB4000-memory.dmp

Filesize
3.3MB

Download
memory/4232-73-0x00000000709E0000-0x0000000070A2C000-memory.dmp

Filesize
304KB

Download
memory/4232-86-0x00000000077A0000-0x00000000077B1000-memory.dmp

Filesize
68KB

Download
memory/4232-85-0x0000000002D60000-0x0000000002D70000-memory.dmp

Filesize
64KB

Download
memory/4396-254-0x0000000000400000-0x0000000001DF9000-memory.dmp

Filesize
26.0MB

Download
memory/4772-106-0x000000007F750000-0x000000007F760000-memory.dmp

Filesize
64KB

Download
memory/4772-104-0x0000000005970000-0x0000000005CC4000-memory.dmp

Filesize
3.3MB

Download
memory/4772-92-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4772-94-0x0000000004A40000-0x0000000004A50000-memory.dmp

Filesize
64KB

Download
memory/4772-93-0x0000000004A40000-0x0000000004A50000-memory.dmp

Filesize
64KB

Download
memory/4772-107-0x00000000709E0000-0x0000000070A2C000-memory.dmp

Filesize
304KB

Download
memory/4772-108-0x0000000070B80000-0x0000000070ED4000-memory.dmp

Filesize
3.3MB

Download
memory/4772-120-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4812-135-0x000000007EF00000-0x000000007EF10000-memory.dmp

Filesize
64KB

Download
memory/4812-137-0x0000000070B80000-0x0000000070ED4000-memory.dmp

Filesize
3.3MB

Download
memory/4812-134-0x00000000028C0000-0x00000000028D0000-memory.dmp

Filesize
64KB

Download
memory/4812-136-0x00000000709E0000-0x0000000070A2C000-memory.dmp

Filesize
304KB

Download
memory/4812-131-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4812-133-0x00000000028C0000-0x00000000028D0000-memory.dmp

Filesize
64KB

Download