glupteba | c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab

Analysis

max time kernel
150s
max time network
125s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
19/04/2024, 17:52

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General

Target
c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Size 4.2MB
Sample240419-wf55ssbb89
SHA256 c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab
MD5 d8816ed8b56dae3d982af42125a864cb
SHA1 14f694bde2c90ab8ba9f3e5ad715ce17ded0fe3e
SHA512 fe265eff381f7cba0827497e7ccb8a224c1229f2a73fd6324eca8bcc9a5e1fdec898406afe74ded666fa7dbbc38c74348c245a86db762a699fc9c060a1e85654
SSDEEP 98304:lBy5JAu+Hk0Et5Mgg8VWlfA2+5+VVv7Fm6fCG:eAu+ENnjVyYiVNw4T
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 20 IoCs

resource	yara_rule
behavioral2/memory/3856-2-0x00000000040C0000-0x00000000049AB000-memory.dmp	family_glupteba
behavioral2/memory/3856-3-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/3280-44-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/3856-49-0x00000000040C0000-0x00000000049AB000-memory.dmp	family_glupteba
behavioral2/memory/3856-71-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/3280-135-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/3280-159-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-240-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-250-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-254-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-258-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-261-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-265-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-271-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-275-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-279-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-283-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-286-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-289-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral2/memory/2432-293-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4868	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2432	csrss.exe
1484	injector.exe
1328	windefender.exe
4940	windefender.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000200000002a9bf-244.dat	upx
behavioral2/memory/1328-248-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4940-253-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4940-262-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3777591257-2471171023-3629228286-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3777591257-2471171023-3629228286-1000\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

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 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

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

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
File created	C:\Windows\rss\csrss.exe	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4448	sc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2420	2724	WerFault.exe	78

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

pid	Process
1700	schtasks.exe
2364	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	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\@tzres.dll,-1801 = "Line Islands Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-361 = "GTB Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-791 = "SA Western Daylight Time"	windefender.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\26\52C64B7E\@tzres.dll,-651 = "AUS Central Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-962 = "Paraguay Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2322 = "Sakhalin Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-364 = "Middle East Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-392 = "Arab Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-731 = "Fiji Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-91 = "Pacific SA Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-201 = "US Mountain Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2611 = "Bougainville Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-365 = "Middle East Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.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\@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2412 = "Marquesas Standard Time"	windefender.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2871 = "Magallanes Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-191 = "Mountain Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1472 = "Magadan Standard Time"	windefender.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\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2162 = "Altai Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-401 = "Arabic Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-435 = "Georgian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2724	powershell.exe
2724	powershell.exe
3856	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3856	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3768	powershell.exe
3768	powershell.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
4636	powershell.exe
4636	powershell.exe
3320	powershell.exe
3320	powershell.exe
3252	powershell.exe
3252	powershell.exe
2012	powershell.exe
2012	powershell.exe
1668	powershell.exe
1668	powershell.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
2432	csrss.exe
2432	csrss.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
2432	csrss.exe
2432	csrss.exe
1484	injector.exe
1484	injector.exe
2432	csrss.exe
2432	csrss.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe
1484	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2724	powershell.exe
Token: SeDebugPrivilege	3856	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Token: SeImpersonatePrivilege	3856	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
Token: SeDebugPrivilege	3768	powershell.exe
Token: SeDebugPrivilege	4636	powershell.exe
Token: SeDebugPrivilege	3320	powershell.exe
Token: SeDebugPrivilege	3252	powershell.exe
Token: SeDebugPrivilege	2012	powershell.exe
Token: SeDebugPrivilege	1668	powershell.exe
Token: SeSystemEnvironmentPrivilege	2432	csrss.exe
Token: SeSecurityPrivilege	4448	sc.exe
Token: SeSecurityPrivilege	4448	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3856 wrote to memory of 2724	3856	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	78
PID 3856 wrote to memory of 2724	3856	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	78
PID 3856 wrote to memory of 2724	3856	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	78
PID 3280 wrote to memory of 3768	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	86
PID 3280 wrote to memory of 3768	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	86
PID 3280 wrote to memory of 3768	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	86
PID 3280 wrote to memory of 1368	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	88
PID 3280 wrote to memory of 1368	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	88
PID 1368 wrote to memory of 4868	1368	cmd.exe	90
PID 1368 wrote to memory of 4868	1368	cmd.exe	90
PID 3280 wrote to memory of 4636	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	91
PID 3280 wrote to memory of 4636	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	91
PID 3280 wrote to memory of 4636	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	91
PID 3280 wrote to memory of 3320	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	93
PID 3280 wrote to memory of 3320	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	93
PID 3280 wrote to memory of 3320	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	93
PID 3280 wrote to memory of 2432	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	95
PID 3280 wrote to memory of 2432	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	95
PID 3280 wrote to memory of 2432	3280	c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe	95
PID 2432 wrote to memory of 3252	2432	csrss.exe	96
PID 2432 wrote to memory of 3252	2432	csrss.exe	96
PID 2432 wrote to memory of 3252	2432	csrss.exe	96
PID 2432 wrote to memory of 2012	2432	csrss.exe	102
PID 2432 wrote to memory of 2012	2432	csrss.exe	102
PID 2432 wrote to memory of 2012	2432	csrss.exe	102
PID 2432 wrote to memory of 1668	2432	csrss.exe	104
PID 2432 wrote to memory of 1668	2432	csrss.exe	104
PID 2432 wrote to memory of 1668	2432	csrss.exe	104
PID 2432 wrote to memory of 1484	2432	csrss.exe	106
PID 2432 wrote to memory of 1484	2432	csrss.exe	106
PID 1328 wrote to memory of 1496	1328	windefender.exe	112
PID 1328 wrote to memory of 1496	1328	windefender.exe	112
PID 1328 wrote to memory of 1496	1328	windefender.exe	112
PID 1496 wrote to memory of 4448	1496	cmd.exe	113
PID 1496 wrote to memory of 4448	1496	cmd.exe	113
PID 1496 wrote to memory of 4448	1496	cmd.exe	113

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\c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
"C:\Users\Admin\AppData\Local\Temp\c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3856
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2724
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2724 -s 2428
    3⤵
    - Program crash
    PID:2420
- C:\Users\Admin\AppData\Local\Temp\c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.exe
  "C:\Users\Admin\AppData\Local\Temp\c16f62239a06fbbbf00415264823de4c8d11543f765e1b53ea08976e49a340ab.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:3280
- - 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:3768
- - 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:1368
  - - 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:4868
- - 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:4636
- - 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:3320
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2432
  - - 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:3252
  - - 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:1700
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1860
  - - 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:2012
  - - 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:1668
  - - 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:1484
  - - 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:2364
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1328
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1496
      - C:\Windows\SysWOW64\sc.exe
        
        sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        6⤵
        Launches sc.exe
        Suspicious use of AdjustPrivilegeToken
        
        PID:4448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2724 -ip 2724
1⤵
PID:436

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_g3z0jiac.fmf.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g3z0jiac.fmf.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

Path C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Size 281KB
SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
MD5 d98e33b66343e7c96158444127a117f6
SHA1 bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA512 705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
SSDEEP 3072:qbHszDaOJ8u2HHFIWr6e29kOnK7qFQ8wMii5I7kGvNjzMuszHshoY46bEydJ+dK9:SA3IlIA6e29vngqS8wMmuooh8z+8F
MD5 SHA1 SHA512 SSDEEP

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
MD5 SHA1 SHA512

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