Malware Analysis Report

2024-10-19 07:37

Sample ID 211004-mdny3agbc3
Target 2cb032be3ffbf1a86e75669f6ff3e088.exe
SHA256 5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9
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

5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9

Threat Level: Known bad

The file 2cb032be3ffbf1a86e75669f6ff3e088.exe was found to be: Known bad.

Malicious Activity Summary

xpertrat test evasion persistence rat trojan

XpertRAT

XpertRAT Core Payload

UAC bypass

Windows security bypass

Adds policy Run key to start application

Deletes itself

Windows security modification

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of SetThreadContext

Program crash

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

System policy modification

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-10-04 10:21

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-10-04 10:21

Reported

2021-10-04 10:23

Platform

win7-en-20210920

Max time kernel

127s

Max time network

59s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe"

Signatures

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\2cb032be3ffbf1a86e75669f6ff3e088.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe

"C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 612 -s 1604

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 192.147.157.177:80 apps.identrust.com tcp

Files

memory/612-53-0x00000000002C0000-0x00000000002C1000-memory.dmp

memory/612-55-0x0000000004970000-0x0000000004971000-memory.dmp

memory/612-56-0x0000000075651000-0x0000000075653000-memory.dmp

memory/1776-57-0x0000000000000000-mapping.dmp

memory/1776-58-0x00000000004C0000-0x00000000004C1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-10-04 10:21

Reported

2021-10-04 10:23

Platform

win10v20210408

Max time kernel

148s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.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\2cb032be3ffbf1a86e75669f6ff3e088.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\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\2cb032be3ffbf1a86e75669f6ff3e088.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.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\2cb032be3ffbf1a86e75669f6ff3e088.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 4016 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 60 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 60 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 60 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 60 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 60 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 60 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 4016 wrote to memory of 60 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
PID 60 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 60 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 60 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 60 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 60 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 60 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 60 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 60 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 520 wrote to memory of 3184 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 520 wrote to memory of 3184 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 520 wrote to memory of 3184 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 520 wrote to memory of 3184 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\2cb032be3ffbf1a86e75669f6ff3e088.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe

"C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe"

C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe

C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe

C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe

C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe

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

C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.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
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
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
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
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
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
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/4016-114-0x00000000005E0000-0x00000000005E1000-memory.dmp

memory/4016-116-0x0000000005160000-0x0000000005161000-memory.dmp

memory/4016-117-0x0000000005AB0000-0x0000000005B66000-memory.dmp

memory/4016-118-0x0000000005F20000-0x0000000005F50000-memory.dmp

memory/60-119-0x0000000000400000-0x000000000042C000-memory.dmp

memory/60-120-0x00000000004010B8-mapping.dmp

memory/520-123-0x0000000000400000-0x0000000000443000-memory.dmp

memory/520-124-0x0000000000401364-mapping.dmp

memory/520-127-0x0000000003540000-0x0000000003693000-memory.dmp

memory/520-128-0x0000000003541000-0x000000000363D000-memory.dmp

memory/60-129-0x0000000000400000-0x000000000042C000-memory.dmp

memory/3184-132-0x0000000000000000-mapping.dmp