Malware Analysis Report

2024-11-30 23:24

Sample ID 231014-cxy82abh3y
Target a130a2c82983817cd8f4d4bf6685cc19.bin
SHA256 87de373056b9799bb232df3ff64099cc99c116c4c5ac730c9611f022f6ea22f1
Tags
systembc
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

87de373056b9799bb232df3ff64099cc99c116c4c5ac730c9611f022f6ea22f1

Threat Level: Known bad

The file a130a2c82983817cd8f4d4bf6685cc19.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

2023-10-14 02:28

Signatures

Systembc family

systembc

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-14 02:28

Reported

2023-10-14 16:48

Platform

win10v2004-20230915-en

Max time kernel

147s

Max time network

156s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\33626834ce190f58584d566022ca50ff38f6b34d0231944ef0d27bd7ab7ae6b7.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 3176 wrote to memory of 4196 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3176 wrote to memory of 4196 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3176 wrote to memory of 4196 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\33626834ce190f58584d566022ca50ff38f6b34d0231944ef0d27bd7ab7ae6b7.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\33626834ce190f58584d566022ca50ff38f6b34d0231944ef0d27bd7ab7ae6b7.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 126.20.238.8.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 45.61.136.241:4001 tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 38.148.119.40.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 126.22.238.8.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-14 02:28

Reported

2023-10-14 16:48

Platform

win7-20230831-en

Max time kernel

122s

Max time network

138s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\33626834ce190f58584d566022ca50ff38f6b34d0231944ef0d27bd7ab7ae6b7.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 2988 wrote to memory of 1492 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2988 wrote to memory of 1492 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2988 wrote to memory of 1492 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2988 wrote to memory of 1492 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2988 wrote to memory of 1492 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2988 wrote to memory of 1492 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2988 wrote to memory of 1492 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\33626834ce190f58584d566022ca50ff38f6b34d0231944ef0d27bd7ab7ae6b7.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\33626834ce190f58584d566022ca50ff38f6b34d0231944ef0d27bd7ab7ae6b7.dll,#1

Network

Country Destination Domain Proto
US 45.61.136.241:4001 tcp

Files

N/A