Malware Analysis Report

2024-12-07 03:21

Sample ID 241112-3g5c8ataqh
Target Stub.exe
SHA256 0e19cefba973323c234322452dfd04e318f14809375090b4f6ab39282f6ba07e
Tags
rat asyncrat discovery
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

0e19cefba973323c234322452dfd04e318f14809375090b4f6ab39282f6ba07e

Threat Level: Known bad

The file Stub.exe was found to be: Known bad.

Malicious Activity Summary

rat asyncrat discovery

AsyncRat

Async RAT payload

Asyncrat family

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 23:30

Signatures

Async RAT payload

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

Asyncrat family

asyncrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 23:30

Reported

2024-11-12 23:32

Platform

win7-20241010-en

Max time kernel

121s

Max time network

122s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Asyncrat family

asyncrat

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\Stub.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Stub.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2372 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\Stub.exe C:\Windows\SysWOW64\WerFault.exe
PID 2372 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\Stub.exe C:\Windows\SysWOW64\WerFault.exe
PID 2372 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\Stub.exe C:\Windows\SysWOW64\WerFault.exe
PID 2372 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\Stub.exe C:\Windows\SysWOW64\WerFault.exe

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 516

Network

N/A

Files

memory/2372-0-0x0000000073F5E000-0x0000000073F5F000-memory.dmp

memory/2372-1-0x0000000000100000-0x0000000000110000-memory.dmp

memory/2372-2-0x0000000073F5E000-0x0000000073F5F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 23:30

Reported

2024-11-12 23:32

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

139s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Asyncrat family

asyncrat

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\Stub.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Stub.exe N/A

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1848 -ip 1848

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1848 -s 744

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/1848-0-0x000000007524E000-0x000000007524F000-memory.dmp

memory/1848-1-0x00000000007D0000-0x00000000007E0000-memory.dmp