Malware Analysis Report

2025-04-03 09:39

Sample ID 230505-bref1ahg7y
Target f1e0f3ea8ffc3723feefa7d7f1037098.bin
SHA256 859ad779718a6f32b24f77fead92a93f447b72a0d2448680352e35803758038d
Tags
systembc
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

859ad779718a6f32b24f77fead92a93f447b72a0d2448680352e35803758038d

Threat Level: Known bad

The file f1e0f3ea8ffc3723feefa7d7f1037098.bin was found to be: Known bad.

Malicious Activity Summary

systembc

Systembc family

Blocklisted process makes network request

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-05-05 01:22

Signatures

Systembc family

systembc

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-05-05 01:22

Reported

2023-05-05 01:24

Platform

win7-20230220-en

Max time kernel

31s

Max time network

135s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f1e0f3ea8ffc3723feefa7d7f1037098.dll,#1

Signatures

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 2044 wrote to memory of 1204 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2044 wrote to memory of 1204 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2044 wrote to memory of 1204 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2044 wrote to memory of 1204 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2044 wrote to memory of 1204 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2044 wrote to memory of 1204 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2044 wrote to memory of 1204 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\f1e0f3ea8ffc3723feefa7d7f1037098.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f1e0f3ea8ffc3723feefa7d7f1037098.dll,#1

Network

Country Destination Domain Proto
US 45.77.115.67:443 tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-05-05 01:22

Reported

2023-05-05 01:24

Platform

win10v2004-20230220-en

Max time kernel

137s

Max time network

148s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f1e0f3ea8ffc3723feefa7d7f1037098.dll,#1

Signatures

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 1220 wrote to memory of 1412 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1220 wrote to memory of 1412 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1220 wrote to memory of 1412 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\f1e0f3ea8ffc3723feefa7d7f1037098.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f1e0f3ea8ffc3723feefa7d7f1037098.dll,#1

Network

Country Destination Domain Proto
NL 8.238.177.126:80 tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 45.77.115.67:443 tcp
US 8.8.8.8:53 67.115.77.45.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 52.152.110.14:443 tcp
US 52.168.112.66:443 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 52.152.110.14:443 tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
NL 8.238.177.126:80 tcp
NL 8.238.177.126:80 tcp
NL 8.238.177.126:80 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp

Files

N/A