xpertrat | 0b3ee4059f431e5bfd85d8bfcce4bb5d2a33b40baca82a36dbca89ea5e4a14b3

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"	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.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"	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe

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

XpertRAT Core payload 1 IoCs

resource	yara_rule
behavioral2/memory/4692-19-0x0000000000400000-0x0000000000443000-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\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4 = "C:\\Users\\Admin\\AppData\\Roaming\\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4.exe"	iexplore.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"	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.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-1-5-21-1574508946-349927670-1185736483-1000\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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 824	2916	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	90
PID 824 set thread context of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4692	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
4692	iexplore.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 824	2916	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	90
PID 2916 wrote to memory of 824	2916	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	90
PID 2916 wrote to memory of 824	2916	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	90
PID 2916 wrote to memory of 824	2916	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	90
PID 2916 wrote to memory of 824	2916	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	90
PID 2916 wrote to memory of 824	2916	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	90
PID 2916 wrote to memory of 824	2916	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	90
PID 824 wrote to memory of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91
PID 824 wrote to memory of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91
PID 824 wrote to memory of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91
PID 824 wrote to memory of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91
PID 824 wrote to memory of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91
PID 824 wrote to memory of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91
PID 824 wrote to memory of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91
PID 824 wrote to memory of 4692	824	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	91

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"	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe

C:\Users\Admin\AppData\Local\Temp\27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
"C:\Users\Admin\AppData\Local\Temp\27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Users\Admin\AppData\Local\Temp\27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
  "C:\Users\Admin\AppData\Local\Temp\27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.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:824
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
    3⤵
    - Adds policy Run key to start application
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4692

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