Malware Analysis Report

2024-11-15 09:22

Sample ID 231117-t3kq9scb4v
Target NEAS.2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84.dll
SHA256 2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84
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

2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84

Threat Level: Known bad

The file NEAS.2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84.dll 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

2023-11-17 16:34

Signatures

Systembc family

systembc

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-17 16:34

Reported

2023-11-17 16:37

Platform

win10v2004-20231020-en

Max time kernel

128s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84.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 1884 wrote to memory of 3964 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1884 wrote to memory of 3964 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1884 wrote to memory of 3964 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\NEAS.2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 67.31.126.40.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 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 254.21.238.8.in-addr.arpa udp
US 8.8.8.8:53 198.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 126.177.238.8.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.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 204.79.197.200:443 tse1.mm.bing.net tcp
RU 62.173.140.37:4001 tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 37.140.173.62.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 81.14.97.104.in-addr.arpa udp
US 8.8.8.8:53 226.162.46.104.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-17 16:34

Reported

2023-11-17 16:39

Platform

win7-20231023-en

Max time kernel

170s

Max time network

272s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84.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 2832 wrote to memory of 2700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 2700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 2700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 2700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 2700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 2700 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2832 wrote to memory of 2700 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\NEAS.2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.2f120d396f71ff9adb8fe11f0b529e8ddea8355837d955fed83bb0ae2a35de84.dll,#1

Network

Country Destination Domain Proto
RU 62.173.140.37:4001 tcp

Files

N/A