remcos | 82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe = "0"	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.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

4920 powershell.exe

pid	process
4920	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

Processes:

82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe = "0"	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

Processes:

82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

description	pid	process	target process
PID 2272 set thread context of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe

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

Processes:

aspnet_wp.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language aspnet_wp.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

4920 powershell.exe
4920 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4920 powershell.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_wp.exe

pid	process
4920	powershell.exe
4920	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4920	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

description	pid	process	target process
PID 2272 wrote to memory of 4920	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	powershell.exe
PID 2272 wrote to memory of 4920	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	powershell.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 2124	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 5084	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 5084	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe
PID 2272 wrote to memory of 5084	2272	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe	aspnet_wp.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe

C:\Users\Admin\AppData\Local\Temp\82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe
"C:\Users\Admin\AppData\Local\Temp\82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.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:2272
- 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\82c624e0eac90e956572497c9fd01879245a3c03b546d2d48eb5ef9e67a3e3f7.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4920
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2124
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  PID:5084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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