remcos | 6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

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

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe = "0"	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

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

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/4028-47-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/940-45-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/940-45-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4028-47-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2404-44-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

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

3264 powershell.exe

pid	process
3264	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\SystemBiosVersion	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe = "0"	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

wab.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	wab.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exewab.exe

description	pid	process	target process
PID 1908 set thread context of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 2568 set thread context of 940	2568	wab.exe	wab.exe
PID 2568 set thread context of 4028	2568	wab.exe	wab.exe
PID 2568 set thread context of 2404	2568	wab.exe	wab.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exewab.exewab.exe

pid process

3264 powershell.exe
3264 powershell.exe
940 wab.exe
940 wab.exe
2404 wab.exe
2404 wab.exe
940 wab.exe
940 wab.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

wab.exe

pid process

2568 wab.exe
2568 wab.exe
2568 wab.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exewab.exe

description pid process

Token: SeDebugPrivilege 3264 powershell.exe
Token: SeDebugPrivilege 2404 wab.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

wab.exe

pid process

2568 wab.exe

pid	process
3264	powershell.exe
3264	powershell.exe
940	wab.exe
940	wab.exe
2404	wab.exe
2404	wab.exe
940	wab.exe
940	wab.exe

pid	process
2568	wab.exe
2568	wab.exe
2568	wab.exe

description	pid	process
Token: SeDebugPrivilege	3264	powershell.exe
Token: SeDebugPrivilege	2404	wab.exe

pid	process
2568	wab.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exewab.exe

description	pid	process	target process
PID 1908 wrote to memory of 3264	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	powershell.exe
PID 1908 wrote to memory of 3264	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	powershell.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 1908 wrote to memory of 2568	1908	6c7572f38ec5853112211eb940751b660538d61f67ae8097c8435991768af98f.exe	wab.exe
PID 2568 wrote to memory of 940	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 940	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 940	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 940	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 4028	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 4028	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 4028	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 4028	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 2404	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 2404	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 2404	2568	wab.exe	wab.exe
PID 2568 wrote to memory of 2404	2568	wab.exe	wab.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

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
- Windows security bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1908

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:3264

C:\Program Files (x86)\Windows Mail\wab.exe
"C:\Program Files (x86)\Windows Mail\wab.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2568

C:\Program Files (x86)\Windows Mail\wab.exe
"C:\Program Files (x86)\Windows Mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\zxwhnwmrm"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:940

C:\Program Files (x86)\Windows Mail\wab.exe
"C:\Program Files (x86)\Windows Mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\czjsopxsacyb"
3⤵
- Accesses Microsoft Outlook accounts
PID:4028

C:\Program Files (x86)\Windows Mail\wab.exe
"C:\Program Files (x86)\Windows Mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mtplpzimwkqgnip"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2404

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

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

Virtualization/Sandbox Evasion

System Information Discovery