Malware Analysis Report

2024-12-07 21:08

Sample ID 240204-k99vasgdcj
Target 8ec82ca83b465f1833f5df5a16bcdc4f
SHA256 24c71817c6727812a252651685ae359cd67cd59b32ba2500012d66680652211b
Tags
upx xtremerat persistence rat spyware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

24c71817c6727812a252651685ae359cd67cd59b32ba2500012d66680652211b

Threat Level: Known bad

The file 8ec82ca83b465f1833f5df5a16bcdc4f was found to be: Known bad.

Malicious Activity Summary

upx xtremerat persistence rat spyware

Xtremerat family

XtremeRAT

Detect XtremeRAT payload

Modifies Installed Components in the registry

UPX packed file

Adds Run key to start application

Drops file in System32 directory

Unsigned PE

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-04 09:19

Signatures

Detect XtremeRAT payload

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

Xtremerat family

xtremerat

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-04 09:19

Reported

2024-02-04 09:21

Platform

win7-20231215-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe"

Signatures

Detect XtremeRAT payload

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

XtremeRAT

persistence spyware rat xtremerat

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87} C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe restart" C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\Server.exe" C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\Server.exe" C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\InstallDir\Server.exe C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A
File created C:\Windows\SysWOW64\InstallDir\Server.exe C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

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

Processes

C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe

"C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe"

C:\Windows\SysWOW64\explorer.exe

explorer.exe

Network

Country Destination Domain Proto
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp
N/A 127.0.0.1:81 tcp

Files

memory/1896-0-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/1944-4-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/1944-6-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/1896-7-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/1944-9-0x0000000000C80000-0x0000000000C96000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-04 09:19

Reported

2024-02-04 09:21

Platform

win10v2004-20231215-en

Max time kernel

152s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe"

Signatures

Detect XtremeRAT payload

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

XtremeRAT

persistence spyware rat xtremerat

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87} C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe restart" C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\Server.exe" C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\Server.exe" C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\InstallDir\Server.exe C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A
File created C:\Windows\SysWOW64\InstallDir\Server.exe C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

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

Processes

C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe

"C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe"

C:\Windows\SysWOW64\explorer.exe

explorer.exe

Network

Country Destination Domain Proto
US 20.231.121.79:80 tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp
US 8.8.8.8:53 rivalvoy.no-ip.org udp
N/A 127.0.0.1:81 tcp

Files

memory/4580-0-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/4508-4-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/4580-5-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/4508-7-0x0000000000C80000-0x0000000000C96000-memory.dmp