xworm | b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe = "0"	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
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

3948 powershell.exe

pid	process
3948	powershell.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe = "0"	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

Processes:

b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

description	pid	process	target process
PID 3760 set thread context of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

3948 powershell.exe
3948 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exemsbuild.exe

description pid process

Token: SeDebugPrivilege 3948 powershell.exe
Token: SeDebugPrivilege 808 msbuild.exe

pid	process
3948	powershell.exe
3948	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3948	powershell.exe
Token: SeDebugPrivilege	808	msbuild.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

description	pid	process	target process
PID 3760 wrote to memory of 3948	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	powershell.exe
PID 3760 wrote to memory of 3948	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	powershell.exe
PID 3760 wrote to memory of 4312	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	CasPol.exe
PID 3760 wrote to memory of 4312	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	CasPol.exe
PID 3760 wrote to memory of 4312	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	CasPol.exe
PID 3760 wrote to memory of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 808	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 3416	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 3416	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe
PID 3760 wrote to memory of 3416	3760	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe	msbuild.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe

C:\Users\Admin\AppData\Local\Temp\b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe
"C:\Users\Admin\AppData\Local\Temp\b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe"
1⤵
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3760

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\b542502918e537abff66105f9432f29e6d8ba7d4169b7d2894dd9ed3261e0141.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3948

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
2⤵
PID:4312

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:808

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
2⤵
PID:3416

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