MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a21c0400d2a5dc83ec25f2e6fd1d05a3d0c4fc252e5f419e5009124f4c05ef9. 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: 8

Intelligence 8 IOCs YARA 4 File information Comments

SHA256 hash:	8a21c0400d2a5dc83ec25f2e6fd1d05a3d0c4fc252e5f419e5009124f4c05ef9
SHA3-384 hash:	2180ff33aa9775642134bc8bd93be32ac5ea047ff2c1561feb9058c7caa0582ac7e1f80fc3e2d8c8a25515a022563d69
SHA1 hash:	f36500dcb58defb8feb99e7b5abbe3474e4d7171
MD5 hash:	f1764b60ed1a3a516dee260988dc6ca2
humanhash:	network-river-undress-seventeen
File name:	.Sx86_64
Download:	download sample
Signature	Mirai Create hunting rule
File size:	33'964 bytes
First seen:	2026-09-16 12:48:01 UTC
Last seen:	2026-09-17 08:33:34 UTC
File type:	elf
MIME type:	application/x-executable
ssdeep	768:tcor3RG9Q1LAxv92evc9lFsAp6Qu1XlL620RoIuwLx0GR:Rg9Y9l4Qu1XlL+5RLR
TLSH	T1F8E2E1A77A37C372DC216536A62E12F8FE87A9721D53432F0CAAB41B88729D165425F0
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	BlinkzSec
Tags:	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) :	33'964 bytes
File size (de-compressed) :	67'776 bytes
Format:	linux/amd64
Unpacked file:	7e911a556bca3271ff6bf938288471853d7ada06257bc6cbb3c1caaa606f0409

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/c373c41d-f2aa-4ded-bd8c-406b12365e01/

Detection(s):

SecuriteInfo.com.Linux.Mirai-19.UNOFFICIAL

Verdict:

Unknown

Threat level:

2.5/10

Confidence:

100%

Link:

https://www.filescan.io/uploads/6aaa905d038a3f8fdf54d81c/reports/e6835557-6dab-4634-8bf9-63973a6d8445/overview

Verdict:

Malicious

File Type:

elf.64.le

First seen:

2026-09-11T05:31:00Z UTC

Last seen:

2026-09-16T14:57:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/8a21c0400d2a5dc83ec25f2e6fd1d05a3d0c4fc252e5f419e5009124f4c05ef9/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/80db7dfd-9586-440c-97a6-8157863c5b1f

Behavior Graph:

Download SVG

Malware family:

Mirai

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a5fb384f-4006-4cd9-81ee-252f84c490c9

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/8a21c0400d2a5dc83ec25f2e6fd1d05a3d0c4fc252e5f419e5009124f4c05ef9

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/8a21c0400d2a5dc83ec25f2e6fd1d05a3d0c4fc252e5f419e5009124f4c05ef9/

Threat name:

Linux.Worm.Mirai

Status:

Malicious

First seen:

2026-09-11 20:13:00 UTC

File Type:

ELF64 Little (Exe)

AV detection:

15 of 24 (62.50%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=riq4aqanfjo4qpwcl4xg7uoqli6qyt6ckls7igpfacisj5gal34q._file

Result

Malware family:

mirai

Score:

10/10

Tags:

family:mirai botnet defense_evasion discovery linux upx

Link:

https://tria.ge/reports/260916-p1x7csyvet/

Behaviour

Reads runtime system information

Changes its process name

Writes file to system bin folder

Deletes itself

Modifies Watchdog functionality

Traces itself

Family: Mirai

Malware Config

C2 Extraction:

cnc.omyth.net
94.154.43.37

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

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/8a21c0400d2a5dc83ec25f2e6fd1d05a3d0c4fc252e5f419e5009124f4c05ef9

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:	ELF_IoT_DVR_Botnet_Hama_UPX Create hunting rule
Author:	Serhii Kocherhan
Description:	Detects packed and unpacked ELF IoT/DVR botnet variants targeting UPX compression structures and uncompressed code

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/