Malware Analysis Report

2024-11-15 09:21

Sample ID 231120-qgndgsgb44
Target config.zip
SHA256 7107780930bf2cf64102e18ed81d74e244eaff05ae14341ac8b7818b9190be4c
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

7107780930bf2cf64102e18ed81d74e244eaff05ae14341ac8b7818b9190be4c

Threat Level: Known bad

The file config.zip 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

2023-11-20 13:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-20 13:14

Reported

2023-11-20 13:16

Platform

win7-20231023-en

Max time kernel

119s

Max time network

135s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\config.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 1932 wrote to memory of 1972 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1932 wrote to memory of 1972 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1932 wrote to memory of 1972 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1932 wrote to memory of 1972 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1932 wrote to memory of 1972 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1932 wrote to memory of 1972 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1932 wrote to memory of 1972 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\config.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

Network

Country Destination Domain Proto
RU 62.173.140.37:4001 tcp

Files

memory/1972-0-0x0000000000940000-0x0000000000A49000-memory.dmp

memory/1972-1-0x0000000000230000-0x0000000000237000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-20 13:14

Reported

2023-11-20 13:16

Platform

win10v2004-20231020-en

Max time kernel

143s

Max time network

153s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\config.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 5000 wrote to memory of 4000 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5000 wrote to memory of 4000 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5000 wrote to memory of 4000 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\config.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 254.177.238.8.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 58.252.72.23.in-addr.arpa udp
US 8.8.8.8:53 137.78.101.95.in-addr.arpa udp
RU 62.173.140.37:4001 tcp
US 8.8.8.8:53 37.140.173.62.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 152.78.101.95.in-addr.arpa udp
US 8.8.8.8:53 195.201.50.20.in-addr.arpa udp

Files

memory/4000-0-0x0000000002DE0000-0x0000000002EE9000-memory.dmp

memory/4000-1-0x00000000014E0000-0x00000000014E7000-memory.dmp