Malware Analysis Report

2024-10-19 07:36

Sample ID 211004-jw6p2sgahm
Target 5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9
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 Overview

score
10/10

SHA256

5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9

Threat Level: Known bad

The file 5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9 was found to be: Known bad.

Malicious Activity Summary

xpertrat test evasion persistence rat trojan

XpertRAT Core Payload

XpertRAT

UAC bypass

Windows security bypass

Adds policy Run key to start application

Windows security modification

Deletes itself

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

System policy modification

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-10-04 08:02

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-10-04 08:02

Reported

2021-10-04 08:04

Platform

win10v20210408

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.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\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
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
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

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\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1400 wrote to memory of 3224 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe
PID 1400 wrote to memory of 3224 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe
PID 1400 wrote to memory of 3224 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe
PID 1400 wrote to memory of 3224 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe
PID 1400 wrote to memory of 3224 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe
PID 1400 wrote to memory of 3224 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe
PID 1400 wrote to memory of 3224 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe
PID 3224 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3224 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3224 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3224 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3224 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3224 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3224 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3224 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 4092 wrote to memory of 4064 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 4092 wrote to memory of 4064 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 4092 wrote to memory of 4064 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe C:\Windows\SysWOW64\notepad.exe
PID 4092 wrote to memory of 4064 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\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe

"C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe"

C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe

C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.exe

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

C:\Users\Admin\AppData\Local\Temp\5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9.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
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/1400-114-0x0000000000B50000-0x0000000000B51000-memory.dmp

memory/1400-116-0x0000000005600000-0x0000000005601000-memory.dmp

memory/1400-117-0x0000000006250000-0x0000000006306000-memory.dmp

memory/1400-118-0x0000000006490000-0x00000000064C0000-memory.dmp

memory/3224-119-0x0000000000400000-0x000000000042C000-memory.dmp

memory/3224-120-0x00000000004010B8-mapping.dmp

memory/3224-123-0x0000000000400000-0x000000000042C000-memory.dmp

memory/4092-124-0x0000000000400000-0x0000000000443000-memory.dmp

memory/4092-125-0x0000000000401364-mapping.dmp

memory/4092-128-0x0000000003310000-0x0000000003463000-memory.dmp

memory/4092-129-0x0000000003311000-0x000000000340D000-memory.dmp

memory/4064-132-0x0000000000000000-mapping.dmp