nanocore | e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a22d0177e9d6943719508b77ed4ac91f.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	a22d0177e9d6943719508b77ed4ac91f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\a22d0177e9d6943719508b77ed4ac91f.exe = "0"	a22d0177e9d6943719508b77ed4ac91f.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

1772 powershell.exe

pid	process
1772	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:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	a22d0177e9d6943719508b77ed4ac91f.exe

Unexpected DNS network traffic destination 7 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description	ioc
Destination IP	37.235.1.177
Destination IP	37.235.1.177
Destination IP	37.235.1.174
Destination IP	37.235.1.174
Destination IP	37.235.1.174
Destination IP	37.235.1.174
Destination IP	37.235.1.177

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	a22d0177e9d6943719508b77ed4ac91f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	a22d0177e9d6943719508b77ed4ac91f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\a22d0177e9d6943719508b77ed4ac91f.exe = "0"	a22d0177e9d6943719508b77ed4ac91f.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

AddInProcess32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DDP Host = "C:\\Program Files (x86)\\DDP Host\\ddphost.exe"	AddInProcess32.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a22d0177e9d6943719508b77ed4ac91f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a22d0177e9d6943719508b77ed4ac91f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description pid process target process

PID 2976 set thread context of 4024 2976 a22d0177e9d6943719508b77ed4ac91f.exe AddInProcess32.exe

description	pid	process	target process
PID 2976 set thread context of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe

Drops file in Program Files directory 2 IoCs

Processes:

AddInProcess32.exe

description	ioc	process
File created	C:\Program Files (x86)\DDP Host\ddphost.exe	AddInProcess32.exe
File opened for modification	C:\Program Files (x86)\DDP Host\ddphost.exe	AddInProcess32.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exeAddInProcess32.exe

pid process

1772 powershell.exe
1772 powershell.exe
4024 AddInProcess32.exe
4024 AddInProcess32.exe
4024 AddInProcess32.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AddInProcess32.exe

pid process

4024 AddInProcess32.exe

pid	process
1772	powershell.exe
1772	powershell.exe
4024	AddInProcess32.exe
4024	AddInProcess32.exe
4024	AddInProcess32.exe

pid	process
4024	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

a22d0177e9d6943719508b77ed4ac91f.exepowershell.exeAddInProcess32.exe

description	pid	process
Token: SeDebugPrivilege	2976	a22d0177e9d6943719508b77ed4ac91f.exe
Token: SeDebugPrivilege	1772	powershell.exe
Token: SeDebugPrivilege	4024	AddInProcess32.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	pid	process	target process
PID 2976 wrote to memory of 1772	2976	a22d0177e9d6943719508b77ed4ac91f.exe	powershell.exe
PID 2976 wrote to memory of 1772	2976	a22d0177e9d6943719508b77ed4ac91f.exe	powershell.exe
PID 2976 wrote to memory of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 4024	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 1796	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 1796	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe
PID 2976 wrote to memory of 1796	2976	a22d0177e9d6943719508b77ed4ac91f.exe	AddInProcess32.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

a22d0177e9d6943719508b77ed4ac91f.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a22d0177e9d6943719508b77ed4ac91f.exe

C:\Users\Admin\AppData\Local\Temp\a22d0177e9d6943719508b77ed4ac91f.exe
"C:\Users\Admin\AppData\Local\Temp\a22d0177e9d6943719508b77ed4ac91f.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 AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2976

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\a22d0177e9d6943719508b77ed4ac91f.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1772

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4024

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
2⤵
PID:1796

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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