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
behavioral2/memory/2892-19-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2496-34-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1892-35-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral2/memory/2496-34-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/1892-35-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/4620-43-0x0000000000400000-0x0000000000415000-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
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

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4528-33-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/4464-41-0x0000000000400000-0x0000000000416000-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-1-5-21-2890696111-2332180956-3312704074-1000\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-1-5-21-2890696111-2332180956-3312704074-1000\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 1 IoCs

pid	pid_target	Process	procid_target
1976	968	WerFault.exe	100

Suspicious use of SetThreadContext 8 IoCs

description	pid	Process	procid_target
PID 2092 set thread context of 3188	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	94
PID 3188 set thread context of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 2892 set thread context of 4528	2892	iexplore.exe	96
PID 2892 set thread context of 2496	2892	iexplore.exe	97
PID 2892 set thread context of 1892	2892	iexplore.exe	98
PID 2892 set thread context of 4464	2892	iexplore.exe	99
PID 2892 set thread context of 968	2892	iexplore.exe	100
PID 2892 set thread context of 4620	2892	iexplore.exe	104

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
4528	iexplore.exe
4528	iexplore.exe
1892	iexplore.exe
1892	iexplore.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
Token: SeDebugPrivilege	2892	iexplore.exe
Token: SeDebugPrivilege	4528	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
2892	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 4972	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	93
PID 2092 wrote to memory of 4972	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	93
PID 2092 wrote to memory of 4972	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	93
PID 2092 wrote to memory of 3188	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	94
PID 2092 wrote to memory of 3188	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	94
PID 2092 wrote to memory of 3188	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	94
PID 2092 wrote to memory of 3188	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	94
PID 2092 wrote to memory of 3188	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	94
PID 2092 wrote to memory of 3188	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	94
PID 2092 wrote to memory of 3188	2092	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	94
PID 3188 wrote to memory of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 3188 wrote to memory of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 3188 wrote to memory of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 3188 wrote to memory of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 3188 wrote to memory of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 3188 wrote to memory of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 3188 wrote to memory of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 3188 wrote to memory of 2892	3188	be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe	95
PID 2892 wrote to memory of 4528	2892	iexplore.exe	96
PID 2892 wrote to memory of 4528	2892	iexplore.exe	96
PID 2892 wrote to memory of 4528	2892	iexplore.exe	96
PID 2892 wrote to memory of 4528	2892	iexplore.exe	96
PID 2892 wrote to memory of 4528	2892	iexplore.exe	96
PID 2892 wrote to memory of 4528	2892	iexplore.exe	96
PID 2892 wrote to memory of 4528	2892	iexplore.exe	96
PID 2892 wrote to memory of 4528	2892	iexplore.exe	96
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 2496	2892	iexplore.exe	97
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 1892	2892	iexplore.exe	98
PID 2892 wrote to memory of 4464	2892	iexplore.exe	99
PID 2892 wrote to memory of 4464	2892	iexplore.exe	99
PID 2892 wrote to memory of 4464	2892	iexplore.exe	99
PID 2892 wrote to memory of 4464	2892	iexplore.exe	99
PID 2892 wrote to memory of 4464	2892	iexplore.exe	99
PID 2892 wrote to memory of 4464	2892	iexplore.exe	99
PID 2892 wrote to memory of 4464	2892	iexplore.exe	99
PID 2892 wrote to memory of 4464	2892	iexplore.exe	99
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 968	2892	iexplore.exe	100
PID 2892 wrote to memory of 4620	2892	iexplore.exe	104
PID 2892 wrote to memory of 4620	2892	iexplore.exe	104
PID 2892 wrote to memory of 4620	2892	iexplore.exe	104

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Local\Temp\be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe
  "C:\Users\Admin\AppData\Local\Temp\be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c.exe"
  2⤵
  PID:4972
- 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:3188
- - 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:2892
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\aufcvkprz0.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4528
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\aufcvkprz1.txt"
      4⤵
      Accesses Microsoft Outlook accounts
      PID:2496
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\aufcvkprz2.txt"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1892
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\aufcvkprz3.txt"
      4⤵
      PID:4464
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\aufcvkprz4.txt"
      4⤵
      PID:968
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 84
        5⤵
        Program crash
        
        PID:1976
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\aufcvkprz4.txt"
      4⤵
      PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 968 -ip 968
1⤵
PID:3868

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