tofsee | 2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c

Disable or Modify System Firewall

T1562.004

pid	Process
4688	netsh.exe

Sets service image path in registry 3 TTPs 1 IoCs

This determines the executable launched when a service starts. It can be used to establish persistence.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Windows Service

persistence privilege_escalation

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\nkkbaazh\ImagePath = "C:\\Windows\\SysWOW64\\nkkbaazh\\vmuscxes.exe"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
3552	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2840	vmuscxes.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2840 set thread context of 3552	2840	vmuscxes.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2520	sc.exe
2232	sc.exe
2320	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2624	cmd.exe
2284	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vmuscxes.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 2624	3764	2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe	88
PID 3764 wrote to memory of 2284	3764	2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe	90
PID 3764 wrote to memory of 2320	3764	2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe	92
PID 3764 wrote to memory of 2520	3764	2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe	95
PID 3764 wrote to memory of 2232	3764	2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe	97
PID 2840 wrote to memory of 3552	2840	vmuscxes.exe	100
PID 2840 wrote to memory of 3552	2840	vmuscxes.exe	100
PID 3764 wrote to memory of 4688	3764	2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe	101

C:\Users\Admin\AppData\Local\Temp\2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe
"C:\Users\Admin\AppData\Local\Temp\2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nkkbaazh\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vmuscxes.exe" C:\Windows\SysWOW64\nkkbaazh\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nkkbaazh binPath= "C:\Windows\SysWOW64\nkkbaazh\vmuscxes.exe /d\"C:\Users\Admin\AppData\Local\Temp\2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nkkbaazh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nkkbaazh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2232
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:4688

C:\Windows\SysWOW64\nkkbaazh\vmuscxes.exe
C:\Windows\SysWOW64\nkkbaazh\vmuscxes.exe /d"C:\Users\Admin\AppData\Local\Temp\2456e202c262d13f11d951cc7542a7a2247d0fa1773537598eab0109a9288c9c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2840
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3552

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Indicator Removal

T1070

File Deletion

Modify Registry

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery