Malware Analysis Report

2025-05-05 23:58

Sample ID 230207-mzhn6sed5w
Target 940-56-0x0000000010000000-0x0000000010177000-memory.dmp
SHA256 821818e91d3203811e03830420c58065c6e2ef5d1b8f71f25bfb4be671540da5
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

821818e91d3203811e03830420c58065c6e2ef5d1b8f71f25bfb4be671540da5

Threat Level: Known bad

The file 940-56-0x0000000010000000-0x0000000010177000-memory.dmp was found to be: Known bad.

Malicious Activity Summary

systembc trojan

Systembc family

SystemBC

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-02-07 10:54

Signatures

Systembc family

systembc

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-07 10:54

Reported

2023-02-07 10:56

Platform

win7-20221111-en

Max time kernel

28s

Max time network

30s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\940-56-0x0000000010000000-0x0000000010177000-memory.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1508 wrote to memory of 1504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1508 wrote to memory of 1504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1508 wrote to memory of 1504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1508 wrote to memory of 1504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1508 wrote to memory of 1504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1508 wrote to memory of 1504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1508 wrote to memory of 1504 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\940-56-0x0000000010000000-0x0000000010177000-memory.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\940-56-0x0000000010000000-0x0000000010177000-memory.dll,#1

Network

N/A

Files

memory/1504-54-0x0000000000000000-mapping.dmp

memory/1504-55-0x00000000757E1000-0x00000000757E3000-memory.dmp

memory/1504-56-0x0000000010000000-0x0000000010177000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-02-07 10:54

Reported

2023-02-07 10:56

Platform

win10v2004-20220812-en

Max time kernel

150s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\940-56-0x0000000010000000-0x0000000010177000-memory.dll,#1

Signatures

SystemBC

trojan systembc

Program crash

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2096 wrote to memory of 3036 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2096 wrote to memory of 3036 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2096 wrote to memory of 3036 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\940-56-0x0000000010000000-0x0000000010177000-memory.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\940-56-0x0000000010000000-0x0000000010177000-memory.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3036 -ip 3036

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 552

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
NL 104.110.191.140:80 tcp
FR 40.79.150.121:443 tcp
NL 178.79.208.1:80 tcp
NL 178.79.208.1:80 tcp
NL 178.79.208.1:80 tcp

Files

memory/3036-132-0x0000000000000000-mapping.dmp

memory/3036-133-0x0000000010000000-0x0000000010177000-memory.dmp