MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b8439389ea3a12075d752b3c10a29095271bd56fb23bfa969d18ea654fe7271. 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: 9


Intelligence 9 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b8439389ea3a12075d752b3c10a29095271bd56fb23bfa969d18ea654fe7271
SHA3-384 hash: fe260a3afe50ce445c37e77297942077f12b5b76be9e9ebd30a1ccf7c38a48af67c5d55ae45e4ec669d52fb545514724
SHA1 hash: ea17a8079d8723b29d8565bb6b9f7ccc8d1cba91
MD5 hash: 3311266872f5b72bcfc50f4a114e059c
humanhash: king-oscar-apart-echo
File name:Josho.mpsl
Download: download sample
Signature Mirai
Create hunting rule
File size:71'528 bytes
First seen:2026-04-18 03:54:52 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 768:QxNCJ0EYlDYhHnKwqsFDwLX3U6ngBhN6PNUpGXS5SyeweVKe0n3oNWpkmPqXitMF:QxNCJBYl2FwwjhwPTXSNxIKzn6CpC
TLSH T1DD63A506BF214FF7DCAFDD3749A91B05258C640B21A97B397E34D828F64A24F19E3861
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

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
DE DE
Vendor Threat Intelligence
Malware configuration found for:
Mirai
Details
Mirai
an XOR decryption key and at least a c2 socket address
Link:
https://research.acce.ciphertechsolutions.com/results/4c31e052-942f-4cf8-b848-77a2f10e302c/
Detection(s):
Unix.Dropper.Mirai-7135890-0
Create hunting rule

Unix.Dropper.Mirai-7135939-0
Create hunting rule

Unix.Dropper.Mirai-7136025-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Runs as daemon
Sends data to a server
Substitutes an application name
Kills critical processes
Gathering data
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-04-18T01:07:00Z UTC
Last seen:
2026-04-18T02:15:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4b8439389ea3a12075d752b3c10a29095271bd56fb23bfa969d18ea654fe7271/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/51e16ad2-459b-4507-95e8-dec6d3a92e68
Behavior Graph:
Download SVG
%3 guuid=12dd1e41-1c00-0000-18f8-59e7890c0000 pid=3209 /usr/bin/sudo guuid=ea741243-1c00-0000-18f8-59e78f0c0000 pid=3215 /tmp/sample.bin guuid=12dd1e41-1c00-0000-18f8-59e7890c0000 pid=3209->guuid=ea741243-1c00-0000-18f8-59e78f0c0000 pid=3215 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/7acf979d-fcef-438b-8839-80f06bf5a3f9
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4b8439389ea3a12075d752b3c10a29095271bd56fb23bfa969d18ea654fe7271
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b8439389ea3a12075d752b3c10a29095271bd56fb23bfa969d18ea654fe7271/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-04-18 03:55:46 UTC
File Type:
ELF32 Little (Exe)
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jocdsoe6uoqsa5oxkkz4ccrjbfjhdpkw7mr37klj2ghkmvh6ojyq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:josho botnet defense_evasion discovery
Link:
https://tria.ge/reports/260418-eg53raav5l/
Behaviour
Reads runtime system information
Changes its process name
Reads system network configuration
Enumerates active TCP sockets
Enumerates running processes
Modifies Watchdog functionality
Contacts a large (48463) amount of remote hosts
Creates a large amount of network flows
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/4b8439389ea3a12075d752b3c10a29095271bd56fb23bfa969d18ea654fe7271

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

File information

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

Web download

Mirai

elf 4b8439389ea3a12075d752b3c10a29095271bd56fb23bfa969d18ea654fe7271

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3824853/
  
Delivery method
Distributed via web download

Comments