Malware Analysis Report

2025-01-02 06:02

Sample ID 241124-gk6jsssren
Target a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe
SHA256 a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d
Tags
nullmixer dropper discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d

Threat Level: Known bad

The file a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe was found to be: Known bad.

Malicious Activity Summary

nullmixer dropper discovery

NullMixer

Nullmixer family

System Location Discovery: System Language Discovery

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-24 05:52

Signatures

Nullmixer family

nullmixer

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-24 05:52

Reported

2024-11-24 05:55

Platform

win7-20241010-en

Max time kernel

71s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe"

Signatures

NullMixer

dropper nullmixer

Nullmixer family

nullmixer

Processes

C:\Users\Admin\AppData\Local\Temp\a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe

"C:\Users\Admin\AppData\Local\Temp\a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe"

Network

N/A

Files

memory/2116-0-0x0000000000400000-0x000000000051B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-24 05:52

Reported

2024-11-24 05:55

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe"

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe

"C:\Users\Admin\AppData\Local\Temp\a3e6b99533e5f8a8b1284fc6d66f170b69e97a6af8d8e268d3bb48453f3f4c6d.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

N/A