Malware Analysis Report

2025-08-11 07:23

Sample ID 240803-bmpq6ssemg
Target 31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf
SHA256 31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882
Tags
upx mirai botnet
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 Overview

score
10/10

SHA256

31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882

Threat Level: Known bad

The file 31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf was found to be: Known bad.

Malicious Activity Summary

upx mirai botnet

Mirai

UPX packed file

Modifies Watchdog functionality

Changes its process name

Reads runtime system information

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-03 01:15

Signatures

UPX packed file

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-03 01:15

Reported

2024-08-03 01:18

Platform

debian9-mipsel-20240729-en

Max time kernel

143s

Max time network

148s

Command Line

[/tmp/31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf]

Signatures

Mirai

botnet mirai

Modifies Watchdog functionality

Description Indicator Process Target
File opened for modification /dev/watchdog /tmp/31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf N/A
File opened for modification /dev/misc/watchdog /tmp/31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf N/A

Changes its process name

Description Indicator Process Target
Changes the process name, possibly in an attempt to hide itself /var/www/html /tmp/31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf N/A

Reads runtime system information

Description Indicator Process Target
File opened for reading /proc/self/exe /tmp/31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf N/A

Processes

/tmp/31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf

[/tmp/31e87f2a37619abb44071bce63b6d355620cb53cb5a17f0f8b61cdaf82a93882.elf]

Network

Country Destination Domain Proto
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp
NL 194.55.186.158:18999 tcp

Files

memory/738-1-0x00400000-0x00469fa0-memory.dmp