xpertrat | 27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9

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"	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.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"	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe

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

XpertRAT Core payload 1 IoCs

resource	yara_rule
behavioral1/memory/2696-19-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2504-35-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2556-36-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/2504-35-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral1/memory/2556-36-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral1/memory/2316-41-0x0000000000400000-0x0000000000415000-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
behavioral1/memory/2788-34-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/3028-40-0x0000000000400000-0x0000000000416000-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"	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\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\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
Set value (str)	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\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

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 9 IoCs

description	pid	Process	procid_target
PID 3044 set thread context of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 2832 set thread context of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2696 set thread context of 2540	2696	iexplore.exe	32
PID 2696 set thread context of 2788	2696	iexplore.exe	33
PID 2696 set thread context of 2504	2696	iexplore.exe	34
PID 2696 set thread context of 2556	2696	iexplore.exe	35
PID 2696 set thread context of 2984	2696	iexplore.exe	36
PID 2696 set thread context of 3028	2696	iexplore.exe	37
PID 2696 set thread context of 2316	2696	iexplore.exe	38

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2696	iexplore.exe
Token: SeDebugPrivilege	2788	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe
2696	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 3044 wrote to memory of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 3044 wrote to memory of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 3044 wrote to memory of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 3044 wrote to memory of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 3044 wrote to memory of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 3044 wrote to memory of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 3044 wrote to memory of 2832	3044	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	30
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2832 wrote to memory of 2696	2832	27216219fbe93818c217c05b66b6586ab58bb000b1c9bc96da93561923f1fce9.exe	31
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2540	2696	iexplore.exe	32
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2788	2696	iexplore.exe	33
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2504	2696	iexplore.exe	34
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2556	2696	iexplore.exe	35
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36
PID 2696 wrote to memory of 2984	2696	iexplore.exe	36

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:3044
- 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:2832
- - 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 SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2696
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\rayvtirxx0.txt"
      4⤵
      PID:2540
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\rayvtirxx0.txt"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2788
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\rayvtirxx1.txt"
      4⤵
      Accesses Microsoft Outlook accounts
      PID:2504
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\rayvtirxx2.txt"
      4⤵
      PID:2556
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\rayvtirxx3.txt"
      4⤵
      PID:2984
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\rayvtirxx3.txt"
      4⤵
      PID:3028
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\rayvtirxx4.txt"
      4⤵
      PID:2316

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