remcos | eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe = "0"	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.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

pid	Process
3108	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe = "0"	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4464 set thread context of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 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	vbc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3108	powershell.exe
3108	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3108	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4464 wrote to memory of 3108	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	84
PID 4464 wrote to memory of 3108	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	84
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 2880	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	85
PID 4464 wrote to memory of 4304	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	87
PID 4464 wrote to memory of 4304	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	87
PID 4464 wrote to memory of 4304	4464	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	87

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe

C:\Users\Admin\AppData\Local\Temp\eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe
"C:\Users\Admin\AppData\Local\Temp\eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe"
1⤵
- UAC bypass
- Windows security bypass
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4464
- 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\eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3108
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:4304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

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

3

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

3

T1082

System Location Discovery

T1614

System Language Discovery