Malware Analysis Report

2024-10-23 20:10

Sample ID 210701-c6lyh6xdfn
Target 173e540463300babea87380df68d79c2.exe
SHA256 51297f05449c2fe207a4635e0d1123c137bfdfd97157e09b00af119733952197
Tags
xpertrat special x 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

51297f05449c2fe207a4635e0d1123c137bfdfd97157e09b00af119733952197

Threat Level: Known bad

The file 173e540463300babea87380df68d79c2.exe was found to be: Known bad.

Malicious Activity Summary

xpertrat special x evasion persistence rat trojan

XpertRAT Core Payload

XpertRAT

UAC bypass

Windows security bypass

Adds policy Run key to start application

Windows security modification

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System policy modification

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-07-22 15:37

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-07-01 06:32

Reported

2021-07-01 06:35

Platform

win7v20210410

Max time kernel

135s

Max time network

183s

Command Line

"C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.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\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7 = "C:\\Users\\Admin\\AppData\\Roaming\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7.exe" C:\Program Files (x86)\Internet Explorer\iexplore.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\173e540463300babea87380df68d79c2.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7 = "C:\\Users\\Admin\\AppData\\Roaming\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7.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\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7 = "C:\\Users\\Admin\\AppData\\Roaming\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7.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\173e540463300babea87380df68d79c2.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
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\173e540463300babea87380df68d79c2.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 1836 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 1836 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 1836 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 1836 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 1836 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 1836 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 1836 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 1836 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 268 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.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\173e540463300babea87380df68d79c2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe

"C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe"

C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe

"{path}"

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

C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 mertrerfeyy.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp
N/A 8.8.8.8:53 gwtruwhgw.duckdns.org udp
N/A 8.8.8.8:53 dfgrttuutii.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp
N/A 8.8.8.8:53 mertrerfeyy.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp
N/A 8.8.8.8:53 mertrerfeyy.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp

Files

memory/1836-0-0x0000000000990000-0x0000000000991000-memory.dmp

memory/1836-2-0x0000000004D70000-0x0000000004D71000-memory.dmp

memory/1836-3-0x0000000000380000-0x0000000000382000-memory.dmp

memory/1836-64-0x00000000080F0000-0x00000000081A1000-memory.dmp

memory/1836-65-0x0000000005230000-0x0000000005295000-memory.dmp

memory/268-67-0x00000000004010B8-mapping.dmp

memory/268-66-0x0000000000400000-0x000000000042C000-memory.dmp

memory/1460-70-0x0000000000400000-0x0000000000443000-memory.dmp

memory/1460-71-0x0000000000401364-mapping.dmp

memory/1460-72-0x0000000000160000-0x00000000002B3000-memory.dmp

memory/1460-76-0x00000000757D1000-0x00000000757D3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-07-01 06:32

Reported

2021-07-01 06:34

Platform

win10v20210410

Max time kernel

145s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.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\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7 = "C:\\Users\\Admin\\AppData\\Roaming\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7.exe" C:\Program Files (x86)\Internet Explorer\iexplore.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\173e540463300babea87380df68d79c2.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7 = "C:\\Users\\Admin\\AppData\\Roaming\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7.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\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7 = "C:\\Users\\Admin\\AppData\\Roaming\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7\\M2P7W1K1-J110-W5Y5-F7Y0-B2B7A0M6B1K7.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\173e540463300babea87380df68d79c2.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
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\173e540463300babea87380df68d79c2.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 4048 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 4048 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 4048 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 4048 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 4048 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 4048 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 4048 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe
PID 2932 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2932 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2932 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2932 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2932 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2932 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2932 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2932 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe C:\Program Files (x86)\Internet Explorer\iexplore.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\173e540463300babea87380df68d79c2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe

"C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe"

C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe

"{path}"

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

C:\Users\Admin\AppData\Local\Temp\173e540463300babea87380df68d79c2.exe

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 mertrerfeyy.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp
N/A 8.8.8.8:53 gwtruwhgw.duckdns.org udp
N/A 8.8.8.8:53 dfgrttuutii.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp
N/A 8.8.8.8:53 gwtruwhgw.duckdns.org udp
N/A 8.8.8.8:53 dfgrttuutii.duckdns.org udp
N/A 8.8.8.8:53 mertrerfeyy.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp
N/A 8.8.8.8:53 gwtruwhgw.duckdns.org udp
N/A 8.8.8.8:53 dfgrttuutii.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp
N/A 8.8.8.8:53 gwtruwhgw.duckdns.org udp
N/A 8.8.8.8:53 dfgrttuutii.duckdns.org udp
N/A 195.133.40.193:8494 mertrerfeyy.duckdns.org tcp

Files

memory/4048-114-0x0000000000810000-0x0000000000811000-memory.dmp

memory/4048-116-0x0000000005640000-0x0000000005641000-memory.dmp

memory/4048-117-0x0000000005140000-0x0000000005141000-memory.dmp

memory/4048-118-0x0000000005280000-0x0000000005281000-memory.dmp

memory/4048-119-0x00000000051F0000-0x00000000051F1000-memory.dmp

memory/4048-120-0x0000000005140000-0x000000000563E000-memory.dmp

memory/4048-121-0x00000000055D0000-0x00000000055D2000-memory.dmp

memory/4048-122-0x0000000008B40000-0x0000000008BF1000-memory.dmp

memory/4048-123-0x000000000B370000-0x000000000B3D5000-memory.dmp

memory/2932-124-0x0000000000400000-0x000000000042C000-memory.dmp

memory/2932-125-0x00000000004010B8-mapping.dmp

memory/2932-128-0x0000000000400000-0x000000000042C000-memory.dmp

memory/4068-129-0x0000000000400000-0x0000000000443000-memory.dmp

memory/4068-130-0x0000000000401364-mapping.dmp

memory/4068-133-0x0000000000EA0000-0x0000000000FF3000-memory.dmp

memory/4068-134-0x0000000000EA1000-0x0000000000F9D000-memory.dmp