Malware Analysis Report

2024-12-07 21:20

Sample ID 240206-krvbwscde4
Target 944c4321621208f37c0c640b4238e0aa
SHA256 cea65cb029c531318d7196e5e5a6f1dc6ef805cdb54c576c7a59878c34702ca7
Tags
xtremerat persistence rat spyware upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

cea65cb029c531318d7196e5e5a6f1dc6ef805cdb54c576c7a59878c34702ca7

Threat Level: Known bad

The file 944c4321621208f37c0c640b4238e0aa was found to be: Known bad.

Malicious Activity Summary

xtremerat persistence rat spyware upx

Detect XtremeRAT payload

XtremeRAT

UPX packed file

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-02-06 08:50

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-06 08:50

Reported

2024-02-06 08:53

Platform

win7-20231215-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe"

Signatures

Detect XtremeRAT payload

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

XtremeRAT

persistence spyware rat xtremerat

UPX packed file

upx
Description Indicator Process Target
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 1676 set thread context of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 1676 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 2880 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Windows\SysWOW64\WerFault.exe
PID 2880 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Windows\SysWOW64\WerFault.exe
PID 2880 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Windows\SysWOW64\WerFault.exe
PID 2880 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

"C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe"

C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 36

Network

N/A

Files

memory/1676-0-0x0000000000400000-0x000000000041E000-memory.dmp

memory/1676-1-0x0000000000020000-0x0000000000023000-memory.dmp

memory/1676-4-0x00000000001D0000-0x00000000001EE000-memory.dmp

memory/2880-5-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/1676-9-0x0000000000020000-0x0000000000023000-memory.dmp

memory/1676-7-0x0000000000400000-0x000000000041E000-memory.dmp

memory/2880-10-0x0000000000C80000-0x0000000000C96000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-06 08:50

Reported

2024-02-06 08:53

Platform

win10v2004-20231222-en

Max time kernel

145s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe"

Signatures

Detect XtremeRAT payload

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

XtremeRAT

persistence spyware rat xtremerat

UPX packed file

upx
Description Indicator Process Target
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 4692 set thread context of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe
PID 4692 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

Processes

C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

"C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe"

C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

C:\Users\Admin\AppData\Local\Temp\944c4321621208f37c0c640b4238e0aa.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3940 -ip 3940

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3940 -s 192

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 104.116.69.13.in-addr.arpa udp

Files

memory/4692-1-0x00000000001C0000-0x00000000001C3000-memory.dmp

memory/4692-0-0x0000000000400000-0x000000000041E000-memory.dmp

memory/4692-7-0x0000000000400000-0x000000000041E000-memory.dmp

memory/3940-4-0x0000000000C80000-0x0000000000C96000-memory.dmp

memory/4692-8-0x00000000001C0000-0x00000000001C3000-memory.dmp

memory/3940-9-0x0000000000C80000-0x0000000000C96000-memory.dmp