MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b238ea5ca2aa971d56390441ba42ef7bb492ebdb909defcd2643f91ac0e9214d. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b238ea5ca2aa971d56390441ba42ef7bb492ebdb909defcd2643f91ac0e9214d
SHA3-384 hash: 290bd64013141a068c2433a2bcc2b50e7ec661c1b7074f8ce1538e9179d57aef0a2ca3199e7ac8f550427600eeb824f0
SHA1 hash: e67b4aa1580f23de7df881f9fc52a663d6471308
MD5 hash: 92985f37f811c2bc938b0fb8d890b3a0
humanhash: sad-fish-echo-seventeen
File name:nklx86
Download: download sample
Signature Mirai
Create hunting rule
File size:112'944 bytes
First seen:2025-12-17 00:07:50 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:JPmLwjNof8HY2xUjLWYaYwCqhoTeLkjQlJOFWqKguWkBfP/hLsOiICoEPzUZ6s4F:JOEeU4yOK2Hvnqws7o
TLSH T159B34BD6E783C0BDF80A0136907257368B36F936021BDBCBDFAA59359914602876D7BC
telfhash t1f02105b9fea25cacb7c09c0d8ace4751c32d667730b427f915f224a532f1011503ac39
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 gafgyt mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
47
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30645.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.31075.LX.BOT.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-7755770-0
Create hunting rule

Unix.Trojan.Mirai-9866113-0
Create hunting rule

Unix.Trojan.Mirai-9885259-0
Create hunting rule

Unix.Trojan.Mirai-9933849-0
Create hunting rule

Unix.Trojan.Gafgyt-9940653-0
Create hunting rule

Unix.Trojan.Mirai-9951089-0
Create hunting rule

Unix.Trojan.Mirai-10008934-0
Create hunting rule

Unix.Trojan.Gafgyt-6735924-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
DNS request
Runs as daemon
Receives data from a server
Creating a file
Opens a port
Sends data to a server
Substitutes an application name
Performs a bruteforce attack in the network
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
gafgyt mirai
Link:
https://www.filescan.io/uploads/6941f46ae126b9ff4383b59b/reports/304684e8-1064-40c5-9b74-f231de13b835/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-12-16T22:19:00Z UTC
Last seen:
2025-12-17T00:31:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b238ea5ca2aa971d56390441ba42ef7bb492ebdb909defcd2643f91ac0e9214d/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1527e7f2-f8c9-405e-bd72-86c43240f814
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1834488
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1834488 Sample: nklx86.elf Startdate: 17/12/2025 Architecture: LINUX Score: 64 18 165.59.212.239 ZAMTELZM Zambia 2->18 20 102.87.180.169 ZAINUGASUG Uganda 2->20 22 99 other IPs or domains 2->22 24 Malicious sample detected (through community Yara rule) 2->24 26 Antivirus / Scanner detection for submitted sample 2->26 28 Multi AV Scanner detection for submitted file 2->28 8 nklx86.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        signatures3 process4 process5 14 nklx86.elf 8->14         started        process6 16 nklx86.elf 14->16         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b238ea5ca2aa971d56390441ba42ef7bb492ebdb909defcd2643f91ac0e9214d
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b238ea5ca2aa971d56390441ba42ef7bb492ebdb909defcd2643f91ac0e9214d/
Threat name:
Linux.Backdoor.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-12-17 00:08:05 UTC
File Type:
ELF32 Little (Exe)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wi4ouxfcvklr2vrzara3uqxppo2jf263sco67tjgip4rvqhjefgq._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery linux
Link:
https://tria.ge/reports/251217-aey47sxpbl/
Behaviour
Changes its process name
Renames itself
Unexpected DNS network traffic destination
Contacts a large (590709) amount of remote hosts
Creates a large amount of network flows
Verdict:
Malicious
Tags:
trojan mirai Unix.Trojan.Mirai-7755770-0
YARA:
Linux_Trojan_Mirai_b14f4c5d Linux_Trojan_Mirai_88de437f Linux_Trojan_Mirai_cc93863b Linux_Trojan_Mirai_8aa7b5d3
Link:
https://app.threat.zone/submission/7a6868f1-e4b3-49d0-8459-86da20a74655
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/b238ea5ca2aa971d56390441ba42ef7bb492ebdb909defcd2643f91ac0e9214d

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_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_b14f4c5d
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
Create hunting rule
Author:Elastic Security
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags

File information

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

Web download

Mirai

elf b238ea5ca2aa971d56390441ba42ef7bb492ebdb909defcd2643f91ac0e9214d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3726327/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3726265/

Comments