xpertrat | be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

Windows security bypass 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

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

XpertRAT Core payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5104-19-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/5076-32-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/4236-35-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5076-32-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/4236-35-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/4072-42-0x0000000000400000-0x0000000000415000-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 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1756-30-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/4652-41-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

iexplore.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\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

Processes:

iexplore.exe

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

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

Suspicious use of SetThreadContext 7 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.execb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exeiexplore.exe

description	pid	process	target process
PID 2256 set thread context of 2052	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2052 set thread context of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 5104 set thread context of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 set thread context of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 set thread context of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 set thread context of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 set thread context of 4072	5104	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.execb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exeiexplore.exeiexplore.exe

pid	process
2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
1756	iexplore.exe
1756	iexplore.exe
4236	iexplore.exe
4236	iexplore.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exeiexplore.exeiexplore.exe

description	pid	process
Token: SeDebugPrivilege	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
Token: SeDebugPrivilege	5104	iexplore.exe
Token: SeDebugPrivilege	1756	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exeiexplore.exe

pid process

2052 cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
5104 iexplore.exe

pid	process
2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
5104	iexplore.exe

Suspicious use of WriteProcessMemory 61 IoCs

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.execb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exeiexplore.exe

description	pid	process	target process
PID 2256 wrote to memory of 1184	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 1184	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 1184	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 2052	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 2052	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 2052	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 2052	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 2052	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 2052	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2256 wrote to memory of 2052	2256	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
PID 2052 wrote to memory of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2052 wrote to memory of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2052 wrote to memory of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2052 wrote to memory of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2052 wrote to memory of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2052 wrote to memory of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2052 wrote to memory of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 2052 wrote to memory of 5104	2052	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe	iexplore.exe
PID 5104 wrote to memory of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 1756	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 5076	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4236	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4652	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe
PID 5104 wrote to memory of 4072	5104	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe

C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
"C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2256

C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
"C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe"
2⤵
PID:1184

C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.exe
"C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.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:2052

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\cb1ccbc5c88657e1f63a2cd3b1c240b6_JC.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:5104

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\wrgylakfo0.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1756

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\wrgylakfo1.txt"
4⤵
- Accesses Microsoft Outlook accounts
PID:5076

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\wrgylakfo2.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4236

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\wrgylakfo3.txt"
4⤵
PID:4652

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\wrgylakfo4.txt"
4⤵
PID:4072

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