Malware Analysis Report

2024-10-19 07:37

Sample ID 211006-lkfqlaahh2
Target 533fe2e3602ede540e261fef7e04b711.exe
SHA256 1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215
Tags
xpertrat test evasion persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215

Threat Level: Known bad

The file 533fe2e3602ede540e261fef7e04b711.exe was found to be: Known bad.

Malicious Activity Summary

xpertrat test evasion persistence rat trojan

UAC bypass

XpertRAT Core Payload

Windows security bypass

XpertRAT

Adds policy Run key to start application

Deletes itself

Windows security modification

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Program crash

Suspicious use of WriteProcessMemory

Modifies system certificate store

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

System policy modification

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-10-06 09:35

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-10-06 09:35

Reported

2021-10-06 09:38

Platform

win7v20210408

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe"

Signatures

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe

"C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1828 -s 1536

Network

Country Destination Domain Proto
US 8.8.8.8:53 store2.gofile.io udp
FR 31.14.69.10:443 store2.gofile.io tcp
US 8.8.8.8:53 apps.identrust.com udp
US 52.217.38.179:80 apps.identrust.com tcp

Files

memory/1828-60-0x00000000008F0000-0x00000000008F1000-memory.dmp

memory/1828-62-0x00000000762C1000-0x00000000762C3000-memory.dmp

memory/1828-63-0x00000000006A0000-0x00000000006A1000-memory.dmp

memory/1176-64-0x0000000000000000-mapping.dmp

memory/1176-65-0x0000000000280000-0x0000000000281000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-10-06 09:35

Reported

2021-10-06 09:37

Platform

win10-en-20210920

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe"

Signatures

UAC bypass

evasion trojan

Windows security bypass

evasion trojan

XpertRAT

rat xpertrat

XpertRAT Core Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\notepad.exe N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0" C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe N/A
N/A N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2160 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe
PID 2160 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe
PID 2160 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe
PID 2160 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe
PID 2160 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe
PID 2160 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe
PID 2160 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe
PID 3808 wrote to memory of 3844 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3808 wrote to memory of 3844 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3808 wrote to memory of 3844 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3808 wrote to memory of 3844 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3808 wrote to memory of 3844 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3808 wrote to memory of 3844 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3808 wrote to memory of 3844 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3808 wrote to memory of 3844 N/A C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3844 wrote to memory of 2220 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 3844 wrote to memory of 2220 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 3844 wrote to memory of 2220 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 3844 wrote to memory of 2220 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe

"C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe"

C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe

C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe

C:\Program Files (x86)\Internet Explorer\iexplore.exe

C:\Users\Admin\AppData\Local\Temp\533fe2e3602ede540e261fef7e04b711.exe

C:\Windows\SysWOW64\notepad.exe

notepad.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 store2.gofile.io udp
FR 31.14.69.10:443 store2.gofile.io tcp
US 8.8.8.8:53 kapasky-antivirus.firewall-gateway.net udp
FR 91.121.250.249:4000 kapasky-antivirus.firewall-gateway.net tcp
FR 91.121.250.249:4000 kapasky-antivirus.firewall-gateway.net tcp
US 52.182.143.208:443 tcp
FR 91.121.250.249:4000 kapasky-antivirus.firewall-gateway.net tcp
US 8.8.8.8:53 kapasky-antivirus.firewall-gateway.net udp
FR 91.121.250.249:4000 kapasky-antivirus.firewall-gateway.net tcp
FR 91.121.250.249:4000 kapasky-antivirus.firewall-gateway.net tcp
FR 91.121.250.249:4000 kapasky-antivirus.firewall-gateway.net tcp

Files

memory/2160-115-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

memory/2160-117-0x0000000005400000-0x0000000005401000-memory.dmp

memory/2160-118-0x0000000006300000-0x00000000063DF000-memory.dmp

memory/2160-119-0x0000000006550000-0x0000000006580000-memory.dmp

memory/3808-120-0x0000000000400000-0x000000000042C000-memory.dmp

memory/3808-121-0x00000000004010B8-mapping.dmp

memory/3844-124-0x0000000000400000-0x0000000000443000-memory.dmp

memory/3844-125-0x0000000000401364-mapping.dmp

memory/3808-126-0x0000000000400000-0x000000000042C000-memory.dmp

memory/3844-129-0x00000000031C0000-0x0000000003313000-memory.dmp

memory/3844-130-0x00000000031C1000-0x00000000032BD000-memory.dmp

memory/2220-133-0x0000000000000000-mapping.dmp