xpertrat | ace7357cb47c8f0c23ee7e1f6fe9ca94c7c1d25bd39ad7965174d3e7dedec70f

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"	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe

Windows security bypass 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe

XpertRAT
XpertRAT is a remote access trojan with various capabilities.
rat xpertrat

XpertRAT Core payload 1 IoCs

resource	yara_rule
behavioral2/memory/3692-14-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe"	iexplore.exe

Deletes itself 1 IoCs

pid	Process
5076	notepad.exe

Windows security modification 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3420 set thread context of 2300	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	96
PID 2300 set thread context of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
Token: SeDebugPrivilege	3692	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
3692	iexplore.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 2300	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	96
PID 3420 wrote to memory of 2300	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	96
PID 3420 wrote to memory of 2300	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	96
PID 3420 wrote to memory of 2300	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	96
PID 3420 wrote to memory of 2300	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	96
PID 3420 wrote to memory of 2300	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	96
PID 3420 wrote to memory of 2300	3420	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	96
PID 2300 wrote to memory of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97
PID 2300 wrote to memory of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97
PID 2300 wrote to memory of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97
PID 2300 wrote to memory of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97
PID 2300 wrote to memory of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97
PID 2300 wrote to memory of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97
PID 2300 wrote to memory of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97
PID 2300 wrote to memory of 3692	2300	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe	97
PID 3692 wrote to memory of 5076	3692	iexplore.exe	98
PID 3692 wrote to memory of 5076	3692	iexplore.exe	98
PID 3692 wrote to memory of 5076	3692	iexplore.exe	98
PID 3692 wrote to memory of 5076	3692	iexplore.exe	98

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"	ef2d0d45bafd7c1f5cf4564c1307ea7d.exe

C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
"C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
  C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
  2⤵
  - UAC bypass
  - Windows security bypass
  - Windows security modification
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:2300
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
    3⤵
    - Adds policy Run key to start application
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3692
  - - C:\Windows\SysWOW64\notepad.exe
      notepad.exe
      4⤵
      Deletes itself
      PID:5076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

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

System Information Discovery