formbook | 5114955491d5400511f2c6d6efdc4338d0f7ef7b85f4f3b1d66ffa78f796b81a

Processes:

cmstp.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\VXLTUFW83DB = "C:\\Program Files (x86)\\Indj8z\\jrudc2ecrrxgl.exe"	cmstp.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmstp.exe

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

Demand.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Demand.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Demand.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

Demand.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	Demand.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	Demand.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Demand.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Demand.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Demand.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Demand.exeDemand.execmstp.exe

description	pid	process	target process
PID 3396 set thread context of 1464	3396	Demand.exe	Demand.exe
PID 1464 set thread context of 3292	1464	Demand.exe	Explorer.EXE
PID 684 set thread context of 3292	684	cmstp.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmstp.exe

description ioc process

File opened for modification C:\Program Files (x86)\Indj8z\jrudc2ecrrxgl.exe cmstp.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Indj8z\jrudc2ecrrxgl.exe	cmstp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

powershell.exeDemand.execmstp.exe

pid	process
4320	powershell.exe
4320	powershell.exe
1464	Demand.exe
1464	Demand.exe
1464	Demand.exe
1464	Demand.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe
684	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3292 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Demand.execmstp.exe

pid process

1464 Demand.exe
1464 Demand.exe
1464 Demand.exe
684 cmstp.exe
684 cmstp.exe

pid	process
3292	Explorer.EXE

pid	process
1464	Demand.exe
1464	Demand.exe
1464	Demand.exe
684	cmstp.exe
684	cmstp.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

powershell.exeDemand.execmstp.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4320	powershell.exe
Token: SeDebugPrivilege	1464	Demand.exe
Token: SeDebugPrivilege	684	cmstp.exe
Token: SeShutdownPrivilege	3292	Explorer.EXE
Token: SeCreatePagefilePrivilege	3292	Explorer.EXE
Token: SeShutdownPrivilege	3292	Explorer.EXE
Token: SeCreatePagefilePrivilege	3292	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Demand.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 3396 wrote to memory of 4320	3396	Demand.exe	powershell.exe
PID 3396 wrote to memory of 4320	3396	Demand.exe	powershell.exe
PID 3396 wrote to memory of 4320	3396	Demand.exe	powershell.exe
PID 3396 wrote to memory of 1464	3396	Demand.exe	Demand.exe
PID 3396 wrote to memory of 1464	3396	Demand.exe	Demand.exe
PID 3396 wrote to memory of 1464	3396	Demand.exe	Demand.exe
PID 3396 wrote to memory of 1464	3396	Demand.exe	Demand.exe
PID 3396 wrote to memory of 1464	3396	Demand.exe	Demand.exe
PID 3396 wrote to memory of 1464	3396	Demand.exe	Demand.exe
PID 3292 wrote to memory of 684	3292	Explorer.EXE	cmstp.exe
PID 3292 wrote to memory of 684	3292	Explorer.EXE	cmstp.exe
PID 3292 wrote to memory of 684	3292	Explorer.EXE	cmstp.exe
PID 684 wrote to memory of 3160	684	cmstp.exe	cmd.exe
PID 684 wrote to memory of 3160	684	cmstp.exe	cmd.exe
PID 684 wrote to memory of 3160	684	cmstp.exe	cmd.exe
PID 684 wrote to memory of 396	684	cmstp.exe	cmd.exe
PID 684 wrote to memory of 396	684	cmstp.exe	cmd.exe
PID 684 wrote to memory of 396	684	cmstp.exe	cmd.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cmstp.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cmstp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cmstp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3292

C:\Users\Admin\AppData\Local\Temp\Demand.exe
"C:\Users\Admin\AppData\Local\Temp\Demand.exe"
2⤵
- Checks BIOS information in registry
- Windows security modification
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3396

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell" Get-MpPreference -verbose
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4320

C:\Users\Admin\AppData\Local\Temp\Demand.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1464

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:684

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Demand.exe"
3⤵
PID:3160

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:396

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

5

Disabling Security Tools

T1089

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Peripheral Device Discovery

T1120

Lateral Movement

Collection

Data from Local System