remcos | 6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f

Virtualization/Sandbox Evasion

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2720 powershell.exe

pid	process
2720	powershell.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	pid	process	target process
PID 1736 set thread context of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2720 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2720 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

wmplayer.exe

pid process

2668 wmplayer.exe

pid	process
2720	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2720	powershell.exe

pid	process
2668	wmplayer.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	pid	process	target process
PID 1736 wrote to memory of 2720	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	powershell.exe
PID 1736 wrote to memory of 2720	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	powershell.exe
PID 1736 wrote to memory of 2720	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	powershell.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2572	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	ngen.exe
PID 1736 wrote to memory of 2712	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	iexplore.exe
PID 1736 wrote to memory of 2712	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	iexplore.exe
PID 1736 wrote to memory of 2712	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	iexplore.exe
PID 1736 wrote to memory of 2712	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	iexplore.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2472	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	calc.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2668	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2964	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2964	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2964	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe
PID 1736 wrote to memory of 2964	1736	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wmplayer.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

C:\Users\Admin\AppData\Local\Temp\6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
"C:\Users\Admin\AppData\Local\Temp\6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe"
1⤵
- UAC bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1736

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2720

C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
2⤵
PID:2572

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
2⤵
PID:2712

C:\Windows\System32\calc.exe
"C:\Windows\System32\calc.exe"
2⤵
PID:2472

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:2668

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
2⤵
PID:2964

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

2

T1112

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Query Registry

4

Virtualization/Sandbox Evasion

2

System Information Discovery

4

Peripheral Device Discovery