xpertrat | be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe

Windows security bypass 2 TTPs 1 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe

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

XpertRAT Core payload 1 IoCs

resource	yara_rule
behavioral1/memory/812-19-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1664-35-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2432-38-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/1664-35-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral1/memory/2432-38-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral1/memory/4768-46-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

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

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2908-34-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/856-45-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	iexplore.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-1-5-21-1141987721-3945596982-3297311814-1000\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"	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe

Program crash 4 IoCs

pid	pid_target	Process	procid_target
4076	2752	WerFault.exe	88
1424	4936	WerFault.exe	94
2388	4088	WerFault.exe	97
4752	3528	WerFault.exe	101

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 2796 set thread context of 1876	2796	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	85
PID 1876 set thread context of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 812 set thread context of 2752	812	iexplore.exe	88
PID 812 set thread context of 2908	812	iexplore.exe	92
PID 812 set thread context of 1664	812	iexplore.exe	93
PID 812 set thread context of 4936	812	iexplore.exe	94
PID 812 set thread context of 4088	812	iexplore.exe	97
PID 812 set thread context of 2432	812	iexplore.exe	100
PID 812 set thread context of 3528	812	iexplore.exe	101
PID 812 set thread context of 856	812	iexplore.exe	104
PID 812 set thread context of 4768	812	iexplore.exe	105

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
2908	iexplore.exe
2908	iexplore.exe
2432	iexplore.exe
2432	iexplore.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	iexplore.exe
Token: SeDebugPrivilege	2908	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
812	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 1876	2796	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	85
PID 2796 wrote to memory of 1876	2796	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	85
PID 2796 wrote to memory of 1876	2796	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	85
PID 2796 wrote to memory of 1876	2796	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	85
PID 2796 wrote to memory of 1876	2796	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	85
PID 2796 wrote to memory of 1876	2796	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	85
PID 2796 wrote to memory of 1876	2796	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	85
PID 1876 wrote to memory of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 1876 wrote to memory of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 1876 wrote to memory of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 1876 wrote to memory of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 1876 wrote to memory of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 1876 wrote to memory of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 1876 wrote to memory of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 1876 wrote to memory of 812	1876	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	86
PID 812 wrote to memory of 2752	812	iexplore.exe	88
PID 812 wrote to memory of 2752	812	iexplore.exe	88
PID 812 wrote to memory of 2752	812	iexplore.exe	88
PID 812 wrote to memory of 2752	812	iexplore.exe	88
PID 812 wrote to memory of 2752	812	iexplore.exe	88
PID 812 wrote to memory of 2752	812	iexplore.exe	88
PID 812 wrote to memory of 2752	812	iexplore.exe	88
PID 812 wrote to memory of 2752	812	iexplore.exe	88
PID 812 wrote to memory of 2908	812	iexplore.exe	92
PID 812 wrote to memory of 2908	812	iexplore.exe	92
PID 812 wrote to memory of 2908	812	iexplore.exe	92
PID 812 wrote to memory of 2908	812	iexplore.exe	92
PID 812 wrote to memory of 2908	812	iexplore.exe	92
PID 812 wrote to memory of 2908	812	iexplore.exe	92
PID 812 wrote to memory of 2908	812	iexplore.exe	92
PID 812 wrote to memory of 2908	812	iexplore.exe	92
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 1664	812	iexplore.exe	93
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4936	812	iexplore.exe	94
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 4088	812	iexplore.exe	97
PID 812 wrote to memory of 2432	812	iexplore.exe	100
PID 812 wrote to memory of 2432	812	iexplore.exe	100
PID 812 wrote to memory of 2432	812	iexplore.exe	100
PID 812 wrote to memory of 2432	812	iexplore.exe	100
PID 812 wrote to memory of 2432	812	iexplore.exe	100
PID 812 wrote to memory of 2432	812	iexplore.exe	100

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"	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe

C:\Users\Admin\AppData\Local\Temp\be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
"C:\Users\Admin\AppData\Local\Temp\be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Users\Admin\AppData\Local\Temp\be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
  "C:\Users\Admin\AppData\Local\Temp\be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.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:1876
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
    3⤵
    - Adds policy Run key to start application
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:812
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm0.txt"
      4⤵
      PID:2752
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2752 -s 84
        5⤵
        Program crash
        
        PID:4076
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm0.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2908
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm1.txt"
      4⤵
      Accesses Microsoft Outlook accounts
      PID:1664
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm2.txt"
      4⤵
      PID:4936
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 84
        5⤵
        Program crash
        
        PID:1424
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm2.txt"
      4⤵
      PID:4088
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4088 -s 84
        5⤵
        Program crash
        
        PID:2388
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm2.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2432
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm3.txt"
      4⤵
      PID:3528
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3528 -s 84
        5⤵
        Program crash
        
        PID:4752
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm3.txt"
      4⤵
      PID:856
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\gjtunvtwm4.txt"
      4⤵
      PID:4768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2752 -ip 2752
1⤵
PID:1544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4936 -ip 4936
1⤵
PID:1612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4088 -ip 4088
1⤵
PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3528 -ip 3528
1⤵
PID:3116

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

T1562

Disable or Modify Tools

Modify Registry