xpertrat | be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

Windows security bypass 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

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

XpertRAT Core payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2216-21-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/344-35-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

Nirsoft 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/344-35-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

iexplore.exe

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 1 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/740-34-0x0000000000400000-0x0000000000426000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

iexplore.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\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

Processes:

iexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\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

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

Suspicious use of SetThreadContext 5 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.execb1ccbc5c88657e1f63a2cd3b1c240b6.exeiexplore.exe

description	pid	process	target process
PID 2020 set thread context of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2976 set thread context of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 set thread context of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2216 set thread context of 740	2216	iexplore.exe	iexplore.exe
PID 2216 set thread context of 344	2216	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

pid process

2976 cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
2976 cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
2976 cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

iexplore.exeiexplore.exe

description pid process

Token: SeDebugPrivilege 2216 iexplore.exe
Token: SeDebugPrivilege 740 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.exeiexplore.exe

pid process

2976 cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
2216 iexplore.exe

pid	process
2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

description	pid	process
Token: SeDebugPrivilege	2216	iexplore.exe
Token: SeDebugPrivilege	740	iexplore.exe

pid	process
2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
2216	iexplore.exe

Suspicious use of WriteProcessMemory 45 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.execb1ccbc5c88657e1f63a2cd3b1c240b6.exeiexplore.exe

description	pid	process	target process
PID 2020 wrote to memory of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2020 wrote to memory of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2020 wrote to memory of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2020 wrote to memory of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2020 wrote to memory of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2020 wrote to memory of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2020 wrote to memory of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2020 wrote to memory of 2976	2020	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2224	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2976 wrote to memory of 2216	2976	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 740	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe
PID 2216 wrote to memory of 344	2216	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6.exe

C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
"C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2020

C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
"C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6.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:2976

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6.exe
3⤵
PID:2224

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6.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:2216

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\pmwbdwxta0.txt"
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:740

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\pmwbdwxta1.txt"
4⤵
- Accesses Microsoft Outlook accounts
PID:344

Network

MITRE ATT&CK Matrix ATT&CK v13

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

T1082

Lateral Movement

Collection

Email Collection