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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2991bc9d54fca10b643781ef1ad1bbd4338d86199cfee830eea39b739b37728. 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: 6


Intelligence 6 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a2991bc9d54fca10b643781ef1ad1bbd4338d86199cfee830eea39b739b37728
SHA3-384 hash: ef73d2d2b0225bf4b27f105bcd05799cb13551d492440276066dc88116a612abf4e6ff7c954494ed4ed2cb28bb2de3bd
SHA1 hash: 41a41f322cca6fb8bd8a8f40d022b051e3ce3f38
MD5 hash: 668c2bc5efaa087600b36d8d84c0e3b5
humanhash: oven-jersey-wolfram-salami
File name:nabx86
Download: download sample
Signature Mirai
Create hunting rule
File size:104'892 bytes
First seen:2026-11-15 17:31:08 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:ph7rDCeimPg2yr8FJqVbfTtaGPYfhaf9g:plHigg2yr8FJgdYEf9g
TLSH T15BA37CCAE643C0F5E98A0DB114ABB7370675FB350034E742EB54FA75AC11B42A94BB8D
telfhash t1b64128f4af3208f8b7d0a843934d57327e1cba7f65203aa109f7687436e654291b9d38
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 torii

Intelligence

File Origin
# of uploads :
1
# of downloads :
30
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Gathering data
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6af9ec63571ec736a218d4dd/reports/94aaf651-0ed9-471b-8bdc-f4145e515b55/overview
Gathering data
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/86349dac-d3f8-4107-a2f3-29b3beaf67c7
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/2006479
Signature
Antivirus / Scanner detection for submitted sample
Connects to many IPs within the same subnet mask (likely port scanning)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 2006479 Sample: nabx86.elf Startdate: 15/11/2026 Architecture: LINUX Score: 84 20 138.204.84.10, 80 oliveirasantostelecomunicacoesltdaBR Brazil 2->20 22 179.48.103.10, 33328, 35388, 80 ULTRAFIBRANETREPRESENTACOESTELECOMEIRELIBR Brazil 2->22 24 99 other IPs or domains 2->24 26 Suricata IDS alerts for network traffic 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Antivirus / Scanner detection for submitted sample 2->30 32 3 other signatures 2->32 8 nabx86.elf 2->8         started        signatures3 process4 process5 10 nabx86.elf 8->10         started        process6 12 nabx86.elf 10->12         started        14 nabx86.elf 10->14         started        16 nabx86.elf 10->16         started        18 nabx86.elf 10->18         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a2991bc9d54fca10b643781ef1ad1bbd4338d86199cfee830eea39b739b37728
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a2991bc9d54fca10b643781ef1ad1bbd4338d86199cfee830eea39b739b37728/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ukmrxsovj7fbbnsdpappdli3xvbtrwdbthh65ayo5i43oonto4ua._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery linux
Link:
https://tria.ge/reports/261115-v3smjsby6r/
Behaviour
Reads runtime system information
Changes its process name
Creates a large amount of network flows
Enumerates running processes
Renames itself
Contacts a large (4216) amount of remote hosts
Malware Family:
mirai
Create hunting rule
Malicious:
True
Tags:
elf
Link:
https://intel.virussign.com/intelligence/file/a2991bc9d54fca10b643781ef1ad1bbd4338d86199cfee830eea39b739b37728
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:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
Rule name:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:Linux_Trojan_Mirai_5f7b67b8
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_88de437f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_8aa7b5d3
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
Create hunting rule
Author:Elastic Security
Rule name:Malware_Ethereum_RPC_Infra_Providers
Create hunting rule
Author:Serhii Kocherhan
Description:Detects binaries, scripts, or configuration files containing common public Ethereum mainnet RPC endpoints often utilized in Web3 drainers and cryptocurrency-stealing malware campaigns.
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/
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:VIGIA_Mirai_53f4a8f8
Create hunting rule
Author:VIG-IA - Cognitive Threat Intelligence System for Smart Territories and Tourism Sector
Description:8374c28d-3e3c-495b-ac68-a63c08c427fb - Mirai and related embedded-device exploitation indicators
Reference:https://vigia.bisite.es/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf a2991bc9d54fca10b643781ef1ad1bbd4338d86199cfee830eea39b739b37728

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/4064278/

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