Malware Analysis Report

2024-12-07 21:12

Sample ID 240203-vfd6msdhh8
Target 8cda651a2958930a5c233d841940c2d9
SHA256 4b2f8f49063ee9b973867f0d1e72923dd72df98c2c0b607ce619bf71a9810eb6
Tags
xtremerat persistence rat spyware upx
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

4b2f8f49063ee9b973867f0d1e72923dd72df98c2c0b607ce619bf71a9810eb6

Threat Level: Known bad

The file 8cda651a2958930a5c233d841940c2d9 was found to be: Known bad.

Malicious Activity Summary

xtremerat persistence rat spyware upx

Detect XtremeRAT payload

XtremeRAT

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

UPX packed file

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-03 16:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-03 16:55

Reported

2024-02-03 16:58

Platform

win7-20231129-en

Max time kernel

150s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.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
N/A N/A N/A N/A

XtremeRAT

persistence spyware rat xtremerat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fud.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fud.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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2624 set thread context of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

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

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fud.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2552 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2552 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2552 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2552 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2624 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Users\Admin\AppData\Local\Temp\fud.exe
PID 2612 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Windows\SysWOW64\svchost.exe
PID 2612 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Windows\SysWOW64\svchost.exe
PID 2612 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Windows\SysWOW64\svchost.exe
PID 2612 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Windows\SysWOW64\svchost.exe
PID 2612 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Windows\SysWOW64\svchost.exe
PID 2612 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Program Files\Internet Explorer\iexplore.exe
PID 2612 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Program Files\Internet Explorer\iexplore.exe
PID 2612 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Program Files\Internet Explorer\iexplore.exe
PID 2612 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Program Files\Internet Explorer\iexplore.exe
PID 2612 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\fud.exe C:\Program Files\Internet Explorer\iexplore.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe

"C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe"

C:\Windows\SysWOW64\DllHost.exe

C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}

C:\Users\Admin\AppData\Local\Temp\fud.exe

"C:\Users\Admin\AppData\Local\Temp\fud.exe"

C:\Users\Admin\AppData\Local\Temp\fud.exe

C:\Users\Admin\AppData\Local\Temp\fud.exe

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Program Files\Internet Explorer\iexplore.exe

"C:\Program Files\Internet Explorer\iexplore.exe"

Network

N/A

Files

memory/2552-3-0x00000000024F0000-0x00000000024F2000-memory.dmp

memory/3048-4-0x0000000000230000-0x0000000000232000-memory.dmp

memory/3048-6-0x0000000000630000-0x0000000000631000-memory.dmp

\Users\Admin\AppData\Local\Temp\fud.exe

MD5 1a54b5e4a7b905cf7c9831c1eaf5106a
SHA1 a342422b2823a81fa03cc277814e4c9b9dbbc52d
SHA256 229644c65d6c868140e9678122320c9df7db84e5fe74c715d61bd454f7bd7189
SHA512 85772b196917a97a0af2a2ab7c7438ac77bc1862a7ebbd0e5302adb54c8b2a003ac116b7d251d9eff53b0956522026492008d606b2e3be7f479fdcbfb02c449b

memory/2552-16-0x0000000000860000-0x0000000000871000-memory.dmp

memory/2552-14-0x0000000000860000-0x0000000000871000-memory.dmp

memory/2624-18-0x0000000000400000-0x0000000000411000-memory.dmp

memory/2612-22-0x0000000010000000-0x000000001004B000-memory.dmp

memory/2624-26-0x0000000000400000-0x0000000000411000-memory.dmp

memory/2612-28-0x0000000010000000-0x000000001004B000-memory.dmp

memory/2612-27-0x0000000000400000-0x0000000000411000-memory.dmp

memory/2624-23-0x0000000000230000-0x0000000000241000-memory.dmp

memory/2612-29-0x0000000010000000-0x000000001004B000-memory.dmp

memory/2612-30-0x0000000010000000-0x000000001004B000-memory.dmp

memory/2716-31-0x0000000010000000-0x000000001004B000-memory.dmp

memory/2716-33-0x0000000010000000-0x000000001004B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\genzo-wakabayashi_103049.jpg

MD5 89625e729b6bf38f1457a4dc86652f0a
SHA1 3754861a553de525932a86ef676b3d692584d94d
SHA256 94ac6e8646448e08f2d4ded91d45a3a7bfb87623ac0c3d2411f5df7a9ef40b0f
SHA512 0cc525d48bdac79d3c7e109d37e398b265d74977f2fc5161453ffc77ad8d1375d87ff4ec9bf291cf4e7db7db685fb9a7cd98edb60b633034e90671b892437dfe

memory/2612-35-0x0000000010000000-0x000000001004B000-memory.dmp

memory/3048-36-0x0000000000630000-0x0000000000631000-memory.dmp

memory/2716-37-0x0000000010000000-0x000000001004B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-03 16:55

Reported

2024-02-03 16:58

Platform

win10v2004-20231215-en

Max time kernel

92s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fud.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fud.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe

"C:\Users\Admin\AppData\Local\Temp\8cda651a2958930a5c233d841940c2d9.exe"

C:\Users\Admin\AppData\Local\Temp\fud.exe

"C:\Users\Admin\AppData\Local\Temp\fud.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 192.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 16.234.44.23.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 204.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\fud.exe

MD5 09a7c82b4f0d627a1d10fca9fba243cb
SHA1 356c293b36163af675f87509d9bc29307c9923ed
SHA256 571a13dcbf30aaf426558b92d677fc5a8105e10dca93f9137fcf519acc18154e
SHA512 24a04be1f26c7f88a8019e0cfc5a8753bbb1dea7684f37a243e2b7ae3384d023435309fccf9e4b544d272ddc53f93162068b5ed29bd8990f3aab865d7c90dfe6

C:\Users\Admin\AppData\Local\Temp\fud.exe

MD5 1a54b5e4a7b905cf7c9831c1eaf5106a
SHA1 a342422b2823a81fa03cc277814e4c9b9dbbc52d
SHA256 229644c65d6c868140e9678122320c9df7db84e5fe74c715d61bd454f7bd7189
SHA512 85772b196917a97a0af2a2ab7c7438ac77bc1862a7ebbd0e5302adb54c8b2a003ac116b7d251d9eff53b0956522026492008d606b2e3be7f479fdcbfb02c449b

memory/1944-14-0x0000000000400000-0x0000000000411000-memory.dmp

memory/1944-17-0x0000000000400000-0x0000000000411000-memory.dmp