Malware Analysis Report

2024-11-13 17:16

Sample ID 231205-s6lbjace38
Target 4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558
SHA256 4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558
Tags
systembc trojan
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

4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558

Threat Level: Known bad

The file 4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558 was found to be: Known bad.

Malicious Activity Summary

systembc trojan

SystemBC

Blocklisted process makes network request

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-05 15:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-05 15:44

Reported

2023-12-05 15:49

Platform

win7-20231025-en

Max time kernel

122s

Max time network

252s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558.dll,#1

Signatures

SystemBC

trojan systembc

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2940 wrote to memory of 2956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2940 wrote to memory of 2956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2940 wrote to memory of 2956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2940 wrote to memory of 2956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2940 wrote to memory of 2956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2940 wrote to memory of 2956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2940 wrote to memory of 2956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558.dll,#1

Network

Country Destination Domain Proto
RU 62.173.140.37:4001 tcp

Files

memory/2956-0-0x0000000000480000-0x0000000000589000-memory.dmp

memory/2956-1-0x0000000000180000-0x0000000000187000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-05 15:44

Reported

2023-12-05 15:49

Platform

win10v2004-20231130-en

Max time kernel

252s

Max time network

260s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558.dll,#1

Signatures

SystemBC

trojan systembc

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3112 wrote to memory of 3672 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3112 wrote to memory of 3672 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3112 wrote to memory of 3672 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4dae3b84eeb5e36c144f9fad2f2b06d9e82381cda6b1f043033cf3644f339558.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
RU 62.173.140.37:4001 tcp
RU 62.173.140.37:4001 tcp

Files

memory/3672-0-0x00000000023F0000-0x00000000024F9000-memory.dmp

memory/3672-1-0x0000000000E40000-0x0000000000E47000-memory.dmp