Malware Analysis Report

2025-04-03 09:42

Sample ID 230424-gr18nabg21
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 06:05

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 1716 wrote to memory of 1216 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 1216 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 1216 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 1216 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 1216 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 1216 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 1216 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/1216-54-0x0000000010000000-0x000000001013E000-memory.dmp

memory/1216-55-0x0000000000960000-0x0000000000A86000-memory.dmp

memory/1216-56-0x0000000000100000-0x0000000000104000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-04-24 06:03

Reported

2023-04-24 06:05

Platform

win10v2004-20230220-en

Max time kernel

68s

Max time network

132s

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 932 wrote to memory of 3740 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 932 wrote to memory of 3740 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 932 wrote to memory of 3740 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 424 -p 3740 -ip 3740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3740 -s 600

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 20.189.173.6:443 tcp
US 8.8.8.8:53 64.13.109.52.in-addr.arpa udp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp

Files

memory/3740-133-0x0000000010000000-0x000000001013E000-memory.dmp

memory/3740-134-0x0000000002700000-0x0000000002826000-memory.dmp

memory/3740-135-0x0000000000CD0000-0x0000000000CD4000-memory.dmp