qakbot | 97b3adc60bbdc0cb7a3399f3e7a394397543d7e39fdcee4275b69362503c96b4

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\Service	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\DeviceDesc	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Service	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\DeviceDesc	rundll32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

Processes:

WerFault.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe

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

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3580 schtasks.exe

pid	process
3580	schtasks.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

WerFault.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

rundll32.exeWerFault.exe

pid process

3388 rundll32.exe
3388 rundll32.exe
3388 rundll32.exe
3388 rundll32.exe
2052 WerFault.exe
2052 WerFault.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

rundll32.exe

pid process

3388 rundll32.exe

pid	process
3388	rundll32.exe
3388	rundll32.exe
3388	rundll32.exe
3388	rundll32.exe
2052	WerFault.exe
2052	WerFault.exe

pid	process
3388	rundll32.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

Processes:

svchost.exeWerFault.exeTiWorker.exe

description	pid	process
Token: SeShutdownPrivilege	2920	svchost.exe
Token: SeCreatePagefilePrivilege	2920	svchost.exe
Token: SeShutdownPrivilege	2920	svchost.exe
Token: SeCreatePagefilePrivilege	2920	svchost.exe
Token: SeShutdownPrivilege	2920	svchost.exe
Token: SeCreatePagefilePrivilege	2920	svchost.exe
Token: SeRestorePrivilege	2052	WerFault.exe
Token: SeBackupPrivilege	2052	WerFault.exe
Token: SeSecurityPrivilege	460	TiWorker.exe
Token: SeRestorePrivilege	460	TiWorker.exe
Token: SeBackupPrivilege	460	TiWorker.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

rundll32.exerundll32.exeWerFault.exeexplorer.exe

description	pid	process	target process
PID 4140 wrote to memory of 3388	4140	rundll32.exe	rundll32.exe
PID 4140 wrote to memory of 3388	4140	rundll32.exe	rundll32.exe
PID 4140 wrote to memory of 3388	4140	rundll32.exe	rundll32.exe
PID 3388 wrote to memory of 3116	3388	rundll32.exe	explorer.exe
PID 3388 wrote to memory of 3116	3388	rundll32.exe	explorer.exe
PID 3388 wrote to memory of 3116	3388	rundll32.exe	explorer.exe
PID 3388 wrote to memory of 3116	3388	rundll32.exe	explorer.exe
PID 3388 wrote to memory of 3116	3388	rundll32.exe	explorer.exe
PID 3496 wrote to memory of 3388	3496	WerFault.exe	rundll32.exe
PID 3496 wrote to memory of 3388	3496	WerFault.exe	rundll32.exe
PID 3116 wrote to memory of 3580	3116	explorer.exe	schtasks.exe
PID 3116 wrote to memory of 3580	3116	explorer.exe	schtasks.exe
PID 3116 wrote to memory of 3580	3116	explorer.exe	schtasks.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\97b3adc60bbdc0cb7a3399f3e7a394397543d7e39fdcee4275b69362503c96b4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4140

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\97b3adc60bbdc0cb7a3399f3e7a394397543d7e39fdcee4275b69362503c96b4.dll,#1
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3388

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
3⤵
- Suspicious use of WriteProcessMemory
PID:3116

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn nstcsztt /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\97b3adc60bbdc0cb7a3399f3e7a394397543d7e39fdcee4275b69362503c96b4.dll\"" /SC ONCE /Z /ST 11:13 /ET 11:25
4⤵
- Creates scheduled task(s)
PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3388 -s 640
3⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2052

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3388 -ip 3388
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3496

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:460

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

3

Peripheral Device Discovery

T1120

System Information Discovery

3