xpertrat | f74ab1efa874c19f32108d0719951e9b2a6ab0bb9f9b66c53145e75efec1684b

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	09fefe8f2d0e20847f08ebd26e29741f.exe

Windows security bypass 2 TTPs 1 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	09fefe8f2d0e20847f08ebd26e29741f.exe

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

XpertRAT Core payload 1 IoCs

resource	yara_rule
behavioral1/memory/1508-77-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1248-96-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1028-97-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/1248-96-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral1/memory/1028-97-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral1/memory/1972-101-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

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\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6 = "C:\\Users\\Admin\\AppData\\Roaming\\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6.exe"	iexplore.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1944-94-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2032-100-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	09fefe8f2d0e20847f08ebd26e29741f.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	iexplore.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows\CurrentVersion\Run\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6 = "C:\\Users\\Admin\\AppData\\Roaming\\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6 = "C:\\Users\\Admin\\AppData\\Roaming\\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6.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"	09fefe8f2d0e20847f08ebd26e29741f.exe

Suspicious use of SetThreadContext 8 IoCs

description	pid	Process	procid_target
PID 932 set thread context of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 912 set thread context of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 1508 set thread context of 1944	1508	iexplore.exe	33
PID 1508 set thread context of 1084	1508	iexplore.exe	34
PID 1508 set thread context of 1248	1508	iexplore.exe	35
PID 1508 set thread context of 1028	1508	iexplore.exe	36
PID 1508 set thread context of 2032	1508	iexplore.exe	38
PID 1508 set thread context of 1972	1508	iexplore.exe	39

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

pid	Process
1744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
932	09fefe8f2d0e20847f08ebd26e29741f.exe
932	09fefe8f2d0e20847f08ebd26e29741f.exe
912	09fefe8f2d0e20847f08ebd26e29741f.exe
540	powershell.exe
912	09fefe8f2d0e20847f08ebd26e29741f.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	932	09fefe8f2d0e20847f08ebd26e29741f.exe
Token: SeDebugPrivilege	1508	iexplore.exe
Token: SeDebugPrivilege	540	powershell.exe
Token: SeDebugPrivilege	1944	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
912	09fefe8f2d0e20847f08ebd26e29741f.exe
1508	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 932 wrote to memory of 540	932	09fefe8f2d0e20847f08ebd26e29741f.exe	27
PID 932 wrote to memory of 540	932	09fefe8f2d0e20847f08ebd26e29741f.exe	27
PID 932 wrote to memory of 540	932	09fefe8f2d0e20847f08ebd26e29741f.exe	27
PID 932 wrote to memory of 540	932	09fefe8f2d0e20847f08ebd26e29741f.exe	27
PID 932 wrote to memory of 1744	932	09fefe8f2d0e20847f08ebd26e29741f.exe	29
PID 932 wrote to memory of 1744	932	09fefe8f2d0e20847f08ebd26e29741f.exe	29
PID 932 wrote to memory of 1744	932	09fefe8f2d0e20847f08ebd26e29741f.exe	29
PID 932 wrote to memory of 1744	932	09fefe8f2d0e20847f08ebd26e29741f.exe	29
PID 932 wrote to memory of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 932 wrote to memory of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 932 wrote to memory of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 932 wrote to memory of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 932 wrote to memory of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 932 wrote to memory of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 932 wrote to memory of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 932 wrote to memory of 912	932	09fefe8f2d0e20847f08ebd26e29741f.exe	31
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 912 wrote to memory of 1508	912	09fefe8f2d0e20847f08ebd26e29741f.exe	32
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1944	1508	iexplore.exe	33
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1084	1508	iexplore.exe	34
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1248	1508	iexplore.exe	35
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	iexplore.exe	36
PID 1508 wrote to memory of 1028	1508	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"	09fefe8f2d0e20847f08ebd26e29741f.exe

C:\Users\Admin\AppData\Local\Temp\09fefe8f2d0e20847f08ebd26e29741f.exe
"C:\Users\Admin\AppData\Local\Temp\09fefe8f2d0e20847f08ebd26e29741f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:932
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tQcdUx.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:540
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tQcdUx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE11C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1744
- C:\Users\Admin\AppData\Local\Temp\09fefe8f2d0e20847f08ebd26e29741f.exe
  "C:\Users\Admin\AppData\Local\Temp\09fefe8f2d0e20847f08ebd26e29741f.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:912
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\09fefe8f2d0e20847f08ebd26e29741f.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:1508
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\gtmatokgg0.txt"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1944
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\gtmatokgg1.txt"
      4⤵
      PID:1084
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\gtmatokgg1.txt"
      4⤵
      Accesses Microsoft Outlook accounts
      PID:1248
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\gtmatokgg2.txt"
      4⤵
      PID:1028
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\gtmatokgg3.txt"
      4⤵
      PID:2032
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\P0U4N118-N5L3-W331-B1K0-Y2V3O6B8B2Q6\gtmatokgg4.txt"
      4⤵
      PID:1972

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

Privilege Escalation

Bypass User Account Control

T1088

Scheduled Task

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry