glupteba | 86ecb8b5574be57317ec6d0c55c8a9fd0e0fef39fa834f8db975fad036248288

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
06-06-2023 15:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

04340599.exe
Size

4.2MB
MD5

fafe5940c836109d46ce5b914d18e497
SHA1

f89b94a92ae0d2936112afd8e995c669f93261cc
SHA256

86ecb8b5574be57317ec6d0c55c8a9fd0e0fef39fa834f8db975fad036248288
SHA512

20d6033dce25b3762267628af1ca5240e5f6ccc67a387782f6d64f3695daf1887f0dad3d694fa99b2dd2d9b33a4c9855526e2cb7a7f3f4b98bb65bfca5463fb7
SSDEEP

98304:KwPHzJGsSBKd2SXXNMk8lMY/ndSjzYudYViNA+e49:K+TDj6tfAjsuTVeU

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 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5024-134-0x0000000005230000-0x0000000005B1B000-memory.dmp	family_glupteba
behavioral2/memory/5024-157-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/5024-193-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4328-220-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4328-267-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-332-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-355-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-357-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-359-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-361-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-363-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-365-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-367-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-369-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-371-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba
behavioral2/memory/4744-373-0x0000000000400000-0x00000000030D0000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4720 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

4744 csrss.exe
4304 injector.exe

pid	process
4720	netsh.exe

pid	process
4744	csrss.exe
4304	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

04340599.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	04340599.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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 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.

System Information Discovery
T1082

Processes:

04340599.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 04340599.exe
Drops file in Windows directory 2 IoCs

Processes:

04340599.exe

description ioc process

File opened for modification C:\Windows\rss 04340599.exe
File created C:\Windows\rss\csrss.exe 04340599.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
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1332 schtasks.exe
3352 schtasks.exe

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	04340599.exe

description	ioc	process
File opened for modification	C:\Windows\rss	04340599.exe
File created	C:\Windows\rss\csrss.exe	04340599.exe

pid	process
1332	schtasks.exe
3352	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

04340599.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	04340599.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	04340599.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time"	04340599.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	04340599.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	04340599.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\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	04340599.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	04340599.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	04340599.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\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time"	04340599.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time"	04340599.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	04340599.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	04340599.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time"	04340599.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\CA\Certificates	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

powershell.exe04340599.exepowershell.exe04340599.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exe

pid	process
1580	powershell.exe
1580	powershell.exe
5024	04340599.exe
5024	04340599.exe
2212	powershell.exe
2212	powershell.exe
4328	04340599.exe
4328	04340599.exe
4328	04340599.exe
4328	04340599.exe
4328	04340599.exe
4328	04340599.exe
4328	04340599.exe
4328	04340599.exe
4328	04340599.exe
4328	04340599.exe
4936	powershell.exe
4936	powershell.exe
3528	powershell.exe
3528	powershell.exe
2304	powershell.exe
2304	powershell.exe
1308	powershell.exe
1308	powershell.exe
4924	powershell.exe
4924	powershell.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4744	csrss.exe
4744	csrss.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4744	csrss.exe
4744	csrss.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe
4304	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

powershell.exe04340599.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	1580	powershell.exe
Token: SeDebugPrivilege	5024	04340599.exe
Token: SeImpersonatePrivilege	5024	04340599.exe
Token: SeDebugPrivilege	2212	powershell.exe
Token: SeDebugPrivilege	4936	powershell.exe
Token: SeDebugPrivilege	3528	powershell.exe
Token: SeDebugPrivilege	2304	powershell.exe
Token: SeDebugPrivilege	1308	powershell.exe
Token: SeDebugPrivilege	4924	powershell.exe
Token: SeSystemEnvironmentPrivilege	4744	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

04340599.exe04340599.execmd.execsrss.exe

description	pid	process	target process
PID 5024 wrote to memory of 1580	5024	04340599.exe	powershell.exe
PID 5024 wrote to memory of 1580	5024	04340599.exe	powershell.exe
PID 5024 wrote to memory of 1580	5024	04340599.exe	powershell.exe
PID 4328 wrote to memory of 2212	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 2212	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 2212	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 2288	4328	04340599.exe	cmd.exe
PID 4328 wrote to memory of 2288	4328	04340599.exe	cmd.exe
PID 2288 wrote to memory of 4720	2288	cmd.exe	netsh.exe
PID 2288 wrote to memory of 4720	2288	cmd.exe	netsh.exe
PID 4328 wrote to memory of 4936	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 4936	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 4936	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 3528	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 3528	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 3528	4328	04340599.exe	powershell.exe
PID 4328 wrote to memory of 4744	4328	04340599.exe	csrss.exe
PID 4328 wrote to memory of 4744	4328	04340599.exe	csrss.exe
PID 4328 wrote to memory of 4744	4328	04340599.exe	csrss.exe
PID 4744 wrote to memory of 2304	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 2304	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 2304	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 1308	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 1308	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 1308	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 4924	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 4924	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 4924	4744	csrss.exe	powershell.exe
PID 4744 wrote to memory of 4304	4744	csrss.exe	injector.exe
PID 4744 wrote to memory of 4304	4744	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\04340599.exe
"C:\Users\Admin\AppData\Local\Temp\04340599.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5024

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1580

C:\Users\Admin\AppData\Local\Temp\04340599.exe
"C:\Users\Admin\AppData\Local\Temp\04340599.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:4328

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:2212

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:2288

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:4720

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:4936

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:3528

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:4744

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:2304

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:1332

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:1736

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:1308

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:4924

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:4304

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:3352

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3izcd4a5.3ce.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:\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
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

MD5
da5027906f66d3fb6af8163566cbca4c

SHA1
1ab86b44364a539b526f23623dfb2b5949df74e7

SHA256
275ee492a611e982da342782ced00362bafcf73bbf483c8c4be98303d841d663

SHA512
a8dd30a4fbc689138a015bd4303edc4ab13ed59f4304df840d01defaef85be7308e5e3b5c4fa01fda4047f34025706cce4b6827d8e0552cdce4c5d051803bfe4

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

MD5
6aa69bd843e5fdfd7fa68853070a89d1

SHA1
2ba07848fe46aaaf0b738ecfb0a6a99ddda85f62

SHA256
3162ade9b39634194676464a5b00839157892f6e99c9293a174f9d429afbfc95

SHA512
b1c6151cfff20527954d25d192c331f15755a95b5ff2c4d817eb7c57de95879dfd9f7a72c17ec7bcc388af27fffb5add46309b0ca950d11797ec94e007b53946

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

MD5
86109175682c21db01c47eb9dee61c4c

SHA1
c11e393a0a53b8098fd6870e0d1c1b79828dc9f0

SHA256
31b2fa7d5d244788aa7d4d804b0f7728276fdeb087a68afe79c10b9ff0f47cbd

SHA512
39d32f1f87c661eed14ddde1e0e4d987ea490b21996b54a92d923d022268ff920552f66aa893ceb4f7ed04a0e931ed31041eba9d6d05de9d14270c7d100cb9c4

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

MD5
44674771982a176633fb96927a033595

SHA1
c4f986ef3ab353078eaa54637ac7649288897d41

SHA256
7fea641c09d296eb4c2361dd03ea8a6d1c8e1f8329067d2e0b494a4730dbab13

SHA512
d0e52996f568f40aa6ff44c74d57569c95def0ec0f4143ed50770956a4b861b32017afcb038e29d87d9c69ecc9ff969cc8541852d30e4869957312130b5d18a6

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

MD5
ec1e0831587dffca8a21ff5e92695107

SHA1
0a58bb84d7adbca2d8963cfa857ad13096a05e82

SHA256
ff85e6e9325340f864f85199335c8d5568db9e377024e2bfda02c7e4c3b4beb3

SHA512
e400dbfcfedc1e13c14add7cc95e4e1b24ccb62eec7836c0f2ccb84cd68eda2e937ee8b8cf17eec17c634c33ca9ef414ca77cbc816b66930f45f3d55f913fb6d

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

MD5
fafe5940c836109d46ce5b914d18e497

SHA1
f89b94a92ae0d2936112afd8e995c669f93261cc

SHA256
86ecb8b5574be57317ec6d0c55c8a9fd0e0fef39fa834f8db975fad036248288

SHA512
20d6033dce25b3762267628af1ca5240e5f6ccc67a387782f6d64f3695daf1887f0dad3d694fa99b2dd2d9b33a4c9855526e2cb7a7f3f4b98bb65bfca5463fb7

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

MD5
fafe5940c836109d46ce5b914d18e497

SHA1
f89b94a92ae0d2936112afd8e995c669f93261cc

SHA256
86ecb8b5574be57317ec6d0c55c8a9fd0e0fef39fa834f8db975fad036248288

SHA512
20d6033dce25b3762267628af1ca5240e5f6ccc67a387782f6d64f3695daf1887f0dad3d694fa99b2dd2d9b33a4c9855526e2cb7a7f3f4b98bb65bfca5463fb7

Download Submit
memory/1308-307-0x0000000002F00000-0x0000000002F10000-memory.dmp

Filesize
64KB

Download
memory/1308-308-0x0000000002F00000-0x0000000002F10000-memory.dmp

Filesize
64KB

Download
memory/1308-309-0x00000000701E0000-0x000000007022C000-memory.dmp

Filesize
304KB

Download
memory/1308-310-0x0000000070990000-0x0000000070CE4000-memory.dmp

Filesize
3.3MB

Download
memory/1308-320-0x000000007F5E0000-0x000000007F5F0000-memory.dmp

Filesize
64KB

Download
memory/1580-172-0x000000007FC00000-0x000000007FC10000-memory.dmp

Filesize
64KB

Download
memory/1580-156-0x0000000007150000-0x000000000716A000-memory.dmp

Filesize
104KB

Download
memory/1580-160-0x0000000070440000-0x0000000070794000-memory.dmp

Filesize
3.3MB

Download
memory/1580-170-0x00000000072F0000-0x000000000730E000-memory.dmp

Filesize
120KB

Download
memory/1580-171-0x0000000007440000-0x000000000744A000-memory.dmp

Filesize
40KB

Download
memory/1580-135-0x00000000027B0000-0x00000000027E6000-memory.dmp

Filesize
216KB

Download
memory/1580-173-0x0000000007550000-0x00000000075E6000-memory.dmp

Filesize
600KB

Download
memory/1580-174-0x00000000074B0000-0x00000000074BE000-memory.dmp

Filesize
56KB

Download
memory/1580-175-0x0000000007500000-0x000000000751A000-memory.dmp

Filesize
104KB

Download
memory/1580-176-0x00000000074F0000-0x00000000074F8000-memory.dmp

Filesize
32KB

Download
memory/1580-177-0x00000000027F0000-0x0000000002800000-memory.dmp

Filesize
64KB

Download
memory/1580-178-0x00000000027F0000-0x0000000002800000-memory.dmp

Filesize
64KB

Download
memory/1580-136-0x0000000004EC0000-0x00000000054E8000-memory.dmp

Filesize
6.2MB

Download
memory/1580-137-0x00000000027F0000-0x0000000002800000-memory.dmp

Filesize
64KB

Download
memory/1580-138-0x00000000027F0000-0x0000000002800000-memory.dmp

Filesize
64KB

Download
memory/1580-139-0x0000000004DC0000-0x0000000004DE2000-memory.dmp

Filesize
136KB

Download
memory/1580-140-0x00000000055F0000-0x0000000005656000-memory.dmp

Filesize
408KB

Download
memory/1580-159-0x00000000702C0000-0x000000007030C000-memory.dmp

Filesize
304KB

Download
memory/1580-141-0x0000000005660000-0x00000000056C6000-memory.dmp

Filesize
408KB

Download
memory/1580-158-0x0000000007310000-0x0000000007342000-memory.dmp

Filesize
200KB

Download
memory/1580-151-0x0000000005DA0000-0x0000000005DBE000-memory.dmp

Filesize
120KB

Download
memory/1580-152-0x0000000006F00000-0x0000000006F44000-memory.dmp

Filesize
272KB

Download
memory/1580-153-0x00000000070B0000-0x0000000007126000-memory.dmp

Filesize
472KB

Download
memory/1580-154-0x00000000027F0000-0x0000000002800000-memory.dmp

Filesize
64KB

Download
memory/1580-155-0x00000000077B0000-0x0000000007E2A000-memory.dmp

Filesize
6.5MB

Download
memory/2212-196-0x0000000070A60000-0x0000000070DB4000-memory.dmp

Filesize
3.3MB

Download
memory/2212-191-0x0000000004480000-0x0000000004490000-memory.dmp

Filesize
64KB

Download
memory/2212-192-0x0000000004480000-0x0000000004490000-memory.dmp

Filesize
64KB

Download
memory/2212-194-0x0000000004480000-0x0000000004490000-memory.dmp

Filesize
64KB

Download
memory/2212-195-0x00000000702C0000-0x000000007030C000-memory.dmp

Filesize
304KB

Download
memory/2212-206-0x000000007F5F0000-0x000000007F600000-memory.dmp

Filesize
64KB

Download
memory/2304-270-0x0000000002580000-0x0000000002590000-memory.dmp

Filesize
64KB

Download
memory/2304-295-0x000000007F3E0000-0x000000007F3F0000-memory.dmp

Filesize
64KB

Download
memory/2304-284-0x0000000070A40000-0x0000000070D94000-memory.dmp

Filesize
3.3MB

Download
memory/2304-283-0x00000000702C0000-0x000000007030C000-memory.dmp

Filesize
304KB

Download
memory/2304-282-0x0000000002580000-0x0000000002590000-memory.dmp

Filesize
64KB

Download
memory/2304-271-0x0000000002580000-0x0000000002590000-memory.dmp

Filesize
64KB

Download
memory/3528-249-0x00000000047C0000-0x00000000047D0000-memory.dmp

Filesize
64KB

Download
memory/3528-248-0x00000000047C0000-0x00000000047D0000-memory.dmp

Filesize
64KB

Download
memory/3528-250-0x00000000702C0000-0x000000007030C000-memory.dmp

Filesize
304KB

Download
memory/3528-262-0x000000007F130000-0x000000007F140000-memory.dmp

Filesize
64KB

Download
memory/3528-261-0x00000000047C0000-0x00000000047D0000-memory.dmp

Filesize
64KB

Download
memory/3528-251-0x0000000070A40000-0x0000000070D94000-memory.dmp

Filesize
3.3MB

Download
memory/4328-267-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4328-220-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-355-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-361-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-373-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-371-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-369-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-367-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-365-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-332-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-363-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-359-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4744-357-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/4924-333-0x00000000046E0000-0x00000000046F0000-memory.dmp

Filesize
64KB

Download
memory/4924-346-0x00000000046E0000-0x00000000046F0000-memory.dmp

Filesize
64KB

Download
memory/4924-334-0x00000000046E0000-0x00000000046F0000-memory.dmp

Filesize
64KB

Download
memory/4924-347-0x000000007F350000-0x000000007F360000-memory.dmp

Filesize
64KB

Download
memory/4924-335-0x00000000701E0000-0x000000007022C000-memory.dmp

Filesize
304KB

Download
memory/4924-336-0x0000000070970000-0x0000000070CC4000-memory.dmp

Filesize
3.3MB

Download
memory/4936-224-0x00000000702C0000-0x000000007030C000-memory.dmp

Filesize
304KB

Download
memory/4936-225-0x0000000070440000-0x0000000070794000-memory.dmp

Filesize
3.3MB

Download
memory/4936-223-0x0000000002850000-0x0000000002860000-memory.dmp

Filesize
64KB

Download
memory/4936-222-0x0000000002850000-0x0000000002860000-memory.dmp

Filesize
64KB

Download
memory/4936-235-0x000000007F820000-0x000000007F830000-memory.dmp

Filesize
64KB

Download
memory/4936-221-0x0000000002850000-0x0000000002860000-memory.dmp

Filesize
64KB

Download
memory/5024-134-0x0000000005230000-0x0000000005B1B000-memory.dmp

Filesize
8.9MB

Download
memory/5024-193-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download
memory/5024-157-0x0000000000400000-0x00000000030D0000-memory.dmp

Filesize
44.8MB

Download