MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4020cab0a431addf1854ce352f4e87580db3762ddbd5062090ed874c8c3480a. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

Mirai

Vendor detections: 10

Intelligence 10 IOCs YARA 4 File information Comments

SHA256 hash:	b4020cab0a431addf1854ce352f4e87580db3762ddbd5062090ed874c8c3480a
SHA3-384 hash:	a28c37d3ca3b7cc311795ecf445c7859d35e054cb5dbc02593e39ae24608ba41de659b917ffafe41eb38c574b4fc8725
SHA1 hash:	cdc9c538a68bfd22cb2a2e94c7e03d1202116fd0
MD5 hash:	cf98089f3623685506ca765040a0400b
humanhash:	november-timing-helium-twelve
File name:	renji.mips
Download:	download sample
Signature	Mirai Create hunting rule
File size:	43'164 bytes
First seen:	2025-09-17 02:52:47 UTC
Last seen:	Never
File type:	elf
MIME type:	application/x-executable
ssdeep	768:6TuB4TLotCYNilXWZ1R1Zka0FZ4AcKPjyvZYwlqXAN5yDBdBkq6JgGlzDpbuR1J2:0TfoM4ilm/RXaZJXrKZYwAXANCkqeVJH
TLSH	T107130231981016EDEDD3B9BF83B507423A190B50B883DE769D9DF2788DD2B023591CD9
TrID	50.1% (.) ELF Executable and Linkable format (Linux) (4022/12) 49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika	elf
Reporter	abuse_ch
Tags:	elf UPX

UPX packed

This file is packed with UPX. We have therefore unpacked the file. Below is furhter information about the unpacked (de-compressed) file.

File size (compressed) :	43'164 bytes
File size (de-compressed) :	114'388 bytes
Format:	linux/mips
Unpacked file:	8a9a5f5f094ff1f318b90b6ad1ca0eb3eca9213fbd9a17f655804bbf2c5bf3a4

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sends data to a server

Changes access rights for a file

Receives data from a server

Removes directories

Deleting a recently created file

Connection attempt

DNS request

Changes access rights for a written file

Runs as daemon

Removes directories from a temporary directory

Substitutes an application name

Verdict:

Unknown

Threat level:

0/10

Confidence:

100%

Tags:

masquerade packed threat upx

Link:

https://www.filescan.io/uploads/68ca22f973287948292caf27/reports/b3e75e6d-7cea-4a12-9901-a968ccff12dc/overview

Verdict:

Malicious

Uses P2P?:

false

Uses anti-vm?:

false

Architecture:

mips

Packer:

UPX

Botnet:

unknown

Number of open files:

Number of processes launched:

Processes remaning?

true

Remote TCP ports scanned:

not identified

Full report:

https://elfdigest.com/brief/b4020cab0a431addf1854ce352f4e87580db3762ddbd5062090ed874c8c3480a

Behaviour

Process Renaming

Botnet C2s

TCP botnet C2(s):

not identified

UDP botnet C2(s):

not identified

Verdict:

Malicious

File Type:

elf.32.be

First seen:

2025-09-17T01:08:00Z UTC

Last seen:

2025-09-17T01:08:00Z UTC

Hits:

~10

Detections:

HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.bl HEUR:Backdoor.Linux.Gafgyt.bj

Link:

https://opentip.kaspersky.com/b4020cab0a431addf1854ce352f4e87580db3762ddbd5062090ed874c8c3480a/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/e76ceb8f-5897-4cf6-9357-7405c0ef26f5

Behavior Graph:

Download SVG

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/312fa6b2-0012-4556-823b-0bf9d566822f

Result

Threat name:

n/a

Detection:

malicious

Classification:

evad

Score:

60 / 100

Link:

https://www.joesandbox.com/analysis/1778952

Signature

Deletes system log files

Manipulation of devices in /dev

Multi AV Scanner detection for submitted file

Sample is packed with UPX

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/b4020cab0a431addf1854ce352f4e87580db3762ddbd5062090ed874c8c3480a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b4020cab0a431addf1854ce352f4e87580db3762ddbd5062090ed874c8c3480a/

Verdict:

Malicious

Threat:

Family.MIRAI

Link:

https://tip.neiki.dev/file/b4020cab0a431addf1854ce352f4e87580db3762ddbd5062090ed874c8c3480a

Threat name:

Linux.Trojan.Multiverze

Status:

Malicious

First seen:

2025-09-17 02:56:36 UTC

File Type:

ELF32 Big (Exe)

AV detection:

14 of 24 (58.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wqbazkykimnn34mfjtrvf5hiowanwn3c3w6vayqjb3mhjsgdjafa._file

Result

Malware family:

mirai

Score:

10/10

Tags:

family:mirai botnet defense_evasion discovery upx

Link:

https://tria.ge/reports/250917-debwfsdr3v/

Behaviour

Reads runtime system information

System Network Configuration Discovery

Changes its process name

Deletes log files

Enumerates running processes

Deletes Audit logs

Deletes system logs

Mirai

Mirai family

Verdict:

Unknown

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/ae03939b-a5d7-4e20-b6ee-5dff12923d9d

Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	CP_AllMal_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication

Rule name:	linux_generic_ipv6_catcher Create hunting rule
Author:	@_lubiedo
Description:	ELF samples using IPv6 addresses

Rule name:	SUSP_ELF_LNX_UPX_Compressed_File Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects a suspicious ELF binary with UPX compression
Reference:	Internal Research