Malware Analysis Report

2024-11-15 09:22

Sample ID 231120-qalw3sha2s
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 13:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-20 13:03

Reported

2023-11-20 13:06

Platform

win7-20231020-en

Max time kernel

118s

Max time network

131s

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 1116 wrote to memory of 1988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1116 wrote to memory of 1988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1116 wrote to memory of 1988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1116 wrote to memory of 1988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1116 wrote to memory of 1988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1116 wrote to memory of 1988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1116 wrote to memory of 1988 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/1988-0-0x0000000000970000-0x0000000000A79000-memory.dmp

memory/1988-1-0x0000000000170000-0x0000000000177000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-20 13:03

Reported

2023-11-20 13:06

Platform

win10v2004-20231023-en

Max time kernel

138s

Max time network

146s

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 3228 wrote to memory of 3492 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3228 wrote to memory of 3492 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3228 wrote to memory of 3492 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 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 39.142.81.104.in-addr.arpa udp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 138.175.53.84.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 34.175.53.84.in-addr.arpa udp
RU 62.173.140.37:4001 tcp
US 8.8.8.8:53 126.177.238.8.in-addr.arpa udp
US 8.8.8.8:53 37.140.173.62.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 210.143.182.52.in-addr.arpa udp

Files

memory/3492-0-0x0000000002860000-0x0000000002969000-memory.dmp

memory/3492-1-0x0000000002720000-0x0000000002727000-memory.dmp