Malware Analysis Report

2025-04-03 09:44

Sample ID 230424-gsagbsaa83
Target 6c04ea279fe9be8143546f933cfc62b4.dll
SHA256 d6a1e00751999d2e03f717c83d28a17e57be56ac076e0a65f37b4c7c54558182
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

d6a1e00751999d2e03f717c83d28a17e57be56ac076e0a65f37b4c7c54558182

Threat Level: Known bad

The file 6c04ea279fe9be8143546f933cfc62b4.dll was found to be: Known bad.

Malicious Activity Summary

systembc trojan

SystemBC

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-04-24 06:03

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-04-24 06:03

Reported

2023-04-24 06:06

Platform

win7-20230220-en

Max time kernel

31s

Max time network

34s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c04ea279fe9be8143546f933cfc62b4.dll,#1

Signatures

SystemBC

trojan systembc

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1544 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1544 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1544 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1544 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1544 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1544 wrote to memory of 1568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1544 wrote to memory of 1568 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\6c04ea279fe9be8143546f933cfc62b4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c04ea279fe9be8143546f933cfc62b4.dll,#1

Network

N/A

Files

memory/1568-54-0x0000000010000000-0x000000001013E000-memory.dmp

memory/1568-55-0x0000000000A20000-0x0000000000B46000-memory.dmp

memory/1568-56-0x0000000000130000-0x0000000000134000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-04-24 06:03

Reported

2023-04-24 06:06

Platform

win10v2004-20230220-en

Max time kernel

92s

Max time network

146s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c04ea279fe9be8143546f933cfc62b4.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 2488 wrote to memory of 4860 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 4860 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 4860 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\6c04ea279fe9be8143546f933cfc62b4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c04ea279fe9be8143546f933cfc62b4.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 608

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
IE 13.69.239.73:443 tcp
US 8.8.8.8:53 64.13.109.52.in-addr.arpa udp
NL 8.238.20.126:80 tcp
NL 8.238.20.126:80 tcp
NL 8.238.20.126:80 tcp
NL 173.223.113.164:443 tcp

Files

memory/4860-133-0x0000000010000000-0x000000001013E000-memory.dmp

memory/4860-134-0x0000000002530000-0x0000000002656000-memory.dmp

memory/4860-135-0x0000000000D40000-0x0000000000D44000-memory.dmp