xpertrat | be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

Windows security bypass 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

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

XpertRAT Core payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2652-22-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

iexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4 = "C:\\Users\\Admin\\AppData\\Roaming\\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe

Windows security modification 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

iexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3849525425-30183055-657688904-1000\Software\Microsoft\Windows\CurrentVersion\Run\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4 = "C:\\Users\\Admin\\AppData\\Roaming\\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4.exe"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4 = "C:\\Users\\Admin\\AppData\\Roaming\\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.execb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	pid	process	target process
PID 2976 set thread context of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2356 set thread context of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

pid process

2356 cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2356 cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

iexplore.exe

description pid process

Token: SeDebugPrivilege 2652 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exeiexplore.exe

pid process

2356 cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2652 iexplore.exe

pid	process
2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	pid	process
Token: SeDebugPrivilege	2652	iexplore.exe

pid	process
2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2652	iexplore.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.execb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	pid	process	target process
PID 2976 wrote to memory of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2976 wrote to memory of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2976 wrote to memory of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2976 wrote to memory of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2976 wrote to memory of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2976 wrote to memory of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2976 wrote to memory of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2976 wrote to memory of 2356	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2356 wrote to memory of 2652	2356	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
"C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
  "C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.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:2356
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
    3⤵
    - Adds policy Run key to start application
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2652

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