0ee170eb92a1063c45512e55aa2c4c7e40e58e1cdc77ce13b5fe56163b871531

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

Processes:

svchost.execvtres.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cvtres.exe

Windows security bypass 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

Processes:

svchost.execvtres.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe = "0"	cvtres.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

2836 svchost.exe

pid	process
2836	svchost.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0"	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

Microsoft Windows.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2713497151-363818805-1301026598-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	Microsoft Windows.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

svchost.exe

description pid process target process

PID 2836 set thread context of 784 2836 svchost.exe cvtres.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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/Job
T1053

Processes:

schtasks.exe

pid process

4984 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3632 timeout.exe

description	pid	process	target process
PID 2836 set thread context of 784	2836	svchost.exe	cvtres.exe

pid	process
4984	schtasks.exe

pid	process
3632	timeout.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

Microsoft Windows.exesvchost.exepowershell.execvtres.exepowershell.exe

pid	process
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
424	Microsoft Windows.exe
2836	svchost.exe
2836	svchost.exe
4380	powershell.exe
784	cvtres.exe
784	cvtres.exe
3448	powershell.exe
4380	powershell.exe
3448	powershell.exe
3448	powershell.exe
4380	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Microsoft Windows.exesvchost.exepowershell.execvtres.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	424	Microsoft Windows.exe
Token: SeDebugPrivilege	2836	svchost.exe
Token: SeDebugPrivilege	4380	powershell.exe
Token: SeDebugPrivilege	784	cvtres.exe
Token: SeDebugPrivilege	3448	powershell.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

Microsoft Windows.execmd.execmd.exesvchost.execvtres.exe

description	pid	process	target process
PID 424 wrote to memory of 2300	424	Microsoft Windows.exe	cmd.exe
PID 424 wrote to memory of 2300	424	Microsoft Windows.exe	cmd.exe
PID 424 wrote to memory of 2300	424	Microsoft Windows.exe	cmd.exe
PID 424 wrote to memory of 2304	424	Microsoft Windows.exe	cmd.exe
PID 424 wrote to memory of 2304	424	Microsoft Windows.exe	cmd.exe
PID 424 wrote to memory of 2304	424	Microsoft Windows.exe	cmd.exe
PID 2304 wrote to memory of 3632	2304	cmd.exe	timeout.exe
PID 2304 wrote to memory of 3632	2304	cmd.exe	timeout.exe
PID 2304 wrote to memory of 3632	2304	cmd.exe	timeout.exe
PID 2300 wrote to memory of 4984	2300	cmd.exe	schtasks.exe
PID 2300 wrote to memory of 4984	2300	cmd.exe	schtasks.exe
PID 2300 wrote to memory of 4984	2300	cmd.exe	schtasks.exe
PID 2304 wrote to memory of 2836	2304	cmd.exe	svchost.exe
PID 2304 wrote to memory of 2836	2304	cmd.exe	svchost.exe
PID 2304 wrote to memory of 2836	2304	cmd.exe	svchost.exe
PID 2836 wrote to memory of 4380	2836	svchost.exe	powershell.exe
PID 2836 wrote to memory of 4380	2836	svchost.exe	powershell.exe
PID 2836 wrote to memory of 4380	2836	svchost.exe	powershell.exe
PID 2836 wrote to memory of 4500	2836	svchost.exe	AddInUtil.exe
PID 2836 wrote to memory of 4500	2836	svchost.exe	AddInUtil.exe
PID 2836 wrote to memory of 784	2836	svchost.exe	cvtres.exe
PID 2836 wrote to memory of 784	2836	svchost.exe	cvtres.exe
PID 2836 wrote to memory of 784	2836	svchost.exe	cvtres.exe
PID 2836 wrote to memory of 784	2836	svchost.exe	cvtres.exe
PID 2836 wrote to memory of 784	2836	svchost.exe	cvtres.exe
PID 2836 wrote to memory of 784	2836	svchost.exe	cvtres.exe
PID 2836 wrote to memory of 784	2836	svchost.exe	cvtres.exe
PID 2836 wrote to memory of 784	2836	svchost.exe	cvtres.exe
PID 784 wrote to memory of 3448	784	cvtres.exe	powershell.exe
PID 784 wrote to memory of 3448	784	cvtres.exe	powershell.exe
PID 784 wrote to memory of 3448	784	cvtres.exe	powershell.exe
PID 784 wrote to memory of 4404	784	cvtres.exe	CasPol.exe
PID 784 wrote to memory of 4404	784	cvtres.exe	CasPol.exe
PID 784 wrote to memory of 4404	784	cvtres.exe	CasPol.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe

C:\Users\Admin\AppData\Local\Temp\Microsoft Windows.exe
"C:\Users\Admin\AppData\Local\Temp\Microsoft Windows.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:424

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2300

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
3⤵
- Creates scheduled task(s)
PID:4984

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBEBC.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:2304

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:3632

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- UAC bypass
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2836

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svchost.exe" -Force
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4380

C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
4⤵
- UAC bypass
- Windows security bypass
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:784

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" -Force
5⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3448

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
5⤵
PID:4404

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInUtil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInUtil.exe"
4⤵
PID:4500

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry