MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b1fa6b62e2c49f8aadeb7fb0f589634ffede5f8ba275967b69e4a8981c45fb0. 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: 13

Intelligence 13 IOCs YARA 4 File information Comments

SHA256 hash:	4b1fa6b62e2c49f8aadeb7fb0f589634ffede5f8ba275967b69e4a8981c45fb0
SHA3-384 hash:	fa8db528c5ebe5e0ca282e204264bccf5dbf5ac11947bc20d0b1238e0ef4eaf6d7700cf910ba96db497b789a8b3668ee
SHA1 hash:	10b3e21fce0907daefa256ca0c5ee55bf81ef8d7
MD5 hash:	838fe7639f7f45e7a57021f956856e40
humanhash:	winter-sodium-paris-failed
File name:	kaizen.x86_64
Download:	download sample
Signature	Mirai Create hunting rule
File size:	54'744 bytes
First seen:	2026-08-28 13:06:41 UTC
Last seen:	Never
File type:	elf
MIME type:	application/x-executable
ssdeep	1536:0d8zC6KZ8cRRtEWKrwEBV20UrxtX+vivzwjY:aYC6KOcb8BvUjXGiv00
TLSH	T18A3312E8DAFA5C02E0F852716B6F055B30E6860843BF5E422210B07F19ABA175B89DF5
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 mirai 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) :	54'744 bytes
File size (de-compressed) :	157'344 bytes
Format:	linux/amd64
Unpacked file:	ecb04b1082ec832d4194868ed295515b762934fcaee5acd83d923c089c84acd7

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/5a2494f6-adb7-4b37-a03e-dc28d407437f/

Detection(s):

SecuriteInfo.com.Linux.Mirai.10589.2816.3262.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sends data to a server

Runs as daemon

Changes the time when the file was created, accessed, or modified

Kills processes

Opens a port

Connection attempt

Creates or modifies files in /cron to set up autorun

Substitutes an application name

Writes files to system directory

Creates or modifies files in /init.d to set up autorun

Deleting of the original file

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

mirai packed upx

Link:

https://www.filescan.io/uploads/6a918803014958e814c123b9/reports/5a8f38e2-2adf-4a1e-b724-888704968bd0/overview

Verdict:

Malicious

Uses P2P?:

false

Uses anti-vm?:

false

Architecture:

x86

Packer:

UPX

Botnet:

unknown

Number of open files:

Number of processes launched:

Processes remaning?

true

Remote TCP ports scanned:

8080,80,8083,2323,23,37215,7547,52869

Full report:

https://elfdigest.com/brief/4b1fa6b62e2c49f8aadeb7fb0f589634ffede5f8ba275967b69e4a8981c45fb0

Behaviour

Persistence

Process Renaming

Botnet C2s

TCP botnet C2(s):

not identified

UDP botnet C2(s):

not identified

Verdict:

Malicious

File Type:

elf.64.le

First seen:

2026-08-13T00:42:00Z UTC

Last seen:

2026-08-29T20:13:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/4b1fa6b62e2c49f8aadeb7fb0f589634ffede5f8ba275967b69e4a8981c45fb0/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/0108a796-4a78-4d22-874a-82f58a061323

Behavior Graph:

Download SVG

Malware family:

Mirai

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/7ce0d52e-c319-4a96-b44a-010d6456abf4

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/4b1fa6b62e2c49f8aadeb7fb0f589634ffede5f8ba275967b69e4a8981c45fb0

Detection:

mirai

Link:

https://mwdb.cert.pl/sample/4b1fa6b62e2c49f8aadeb7fb0f589634ffede5f8ba275967b69e4a8981c45fb0/

Threat name:

Linux.Worm.Mirai

Status:

Malicious

First seen:

2026-08-13 05:32:17 UTC

File Type:

ELF64 Little (Exe)

AV detection:

21 of 36 (58.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=jmp2nnrofre7rkw6w75q6wewgt763zpyxitvsz5wtzfitaoel6ya._file

Result

Malware family:

mirai

Score:

10/10

Tags:

family:mirai botnet:omni botnet defense_evasion discovery execution linux persistence privilege_escalation upx

Link:

https://tria.ge/reports/260828-qcrv4sxzcw/

Behaviour

Reads runtime system information

Changes its process name

Reads system network configuration

UPX packed file

Creates/modifies Cron job

Enumerates active TCP sockets

Modifies rc script

Write file to user bin folder

Deletes itself

Modifies Watchdog functionality

Contacts a large (973168) amount of remote hosts

Creates a large amount of network flows

Family: Mirai

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/4b1fa6b62e2c49f8aadeb7fb0f589634ffede5f8ba275967b69e4a8981c45fb0

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:	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

Rule name:	TH_Generic_MassHunt_Linux_Malware_2026_CYFARE Create hunting rule
Author:	CYFARE
Description:	Generic Linux malware mass-hunt rule - 2026
Reference:	https://cyfare.net/