Malware Analysis Report

2025-05-05 23:59

Sample ID 230208-w6ck6sdd9s
Target 4860-133-0x0000000010000000-0x000000001013B000-memory.dmp
SHA256 a5c9cf2ec9abeb644cbe33bcf1035f3efb1c5282cbd145abbd3c593eb8449a94
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

a5c9cf2ec9abeb644cbe33bcf1035f3efb1c5282cbd145abbd3c593eb8449a94

Threat Level: Known bad

The file 4860-133-0x0000000010000000-0x000000001013B000-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

2023-02-08 18:31

Signatures

Systembc family

systembc

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-08 18:31

Reported

2023-02-08 18:34

Platform

win7-20221111-en

Max time kernel

29s

Max time network

34s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4860-133-0x0000000010000000-0x000000001013B000-memory.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4860-133-0x0000000010000000-0x000000001013B000-memory.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4860-133-0x0000000010000000-0x000000001013B000-memory.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1304 -s 196

Network

N/A

Files

memory/1304-54-0x0000000000000000-mapping.dmp

memory/1304-55-0x0000000075831000-0x0000000075833000-memory.dmp

memory/1156-56-0x0000000000000000-mapping.dmp

memory/1304-57-0x0000000010000000-0x000000001013B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-02-08 18:31

Reported

2023-02-08 18:34

Platform

win10v2004-20221111-en

Max time kernel

152s

Max time network

163s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4860-133-0x0000000010000000-0x000000001013B000-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 2376 wrote to memory of 2120 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2376 wrote to memory of 2120 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2376 wrote to memory of 2120 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\4860-133-0x0000000010000000-0x000000001013B000-memory.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4860-133-0x0000000010000000-0x000000001013B000-memory.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2120 -ip 2120

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2120 -s 560

Network

Country Destination Domain Proto
US 93.184.221.240:80 tcp
US 93.184.220.29:80 tcp
US 93.184.221.240:80 tcp
US 20.189.173.12:443 tcp
US 8.8.8.8:53 164.2.77.40.in-addr.arpa udp
NL 104.80.225.205:443 tcp

Files

memory/2120-132-0x0000000000000000-mapping.dmp

memory/2120-133-0x0000000010000000-0x000000001013B000-memory.dmp