MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bdd5a57f630e710dc77e777523087fbd104523cac853cba8b274bc60bec4d76b. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bdd5a57f630e710dc77e777523087fbd104523cac853cba8b274bc60bec4d76b
SHA3-384 hash: 96cd90fdeacab5c544325e422ab508d99140fc204312f1dabfc1d0ad971e36cb217d54912078432199fcb05e85fff1ed
SHA1 hash: bff8b41c4ca650aeebf86ac492d4f51fb57cbd53
MD5 hash: 3e57e1a357903769fa1d8c605c30b467
humanhash: oklahoma-gee-fillet-tennis
File name:kworkerd-writeback
Download: download sample
Signature Mirai
Create hunting rule
File size:296'104 bytes
First seen:2026-08-29 12:55:12 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 6144:3G4rUuKqj3RHfEFwf7szmx5RMc9DLxOaen+ssU:3nU0bxpBRd9xON+bU
TLSH T18B542902FB081E03E1132EF0263B97F197DEA9616CB4B6406D5FBEC54273C71EA45A99
Magika elf
Reporter BlinkzSec
Tags:mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
CZ CZ
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Trojan.Mirai-10012200-0
Create hunting rule

Unix.Trojan.Mirai-10012671-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Kills processes
Opens a port
Sets a written file as executable
Launching a process
Manages services
Connection attempt
Changes the time when the file was created, accessed, or modified
Collects information on the CPU
Creating a file in the %temp% directory
Changes access rights for a written file
Creating a file
Creates or modifies files in /cron to set up autorun
Deleting of the original file
Creates or modifies files in /init.d to set up autorun
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-08-29T10:16:00Z UTC
Last seen:
2026-08-29T14:44:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/bdd5a57f630e710dc77e777523087fbd104523cac853cba8b274bc60bec4d76b/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/a9e92aa9-c377-4e3e-8330-97d9b461b9d4
Behavior Graph:
Download SVG
%3 guuid=7978feda-1700-0000-e5dc-bbef7a0a0000 pid=2682 /usr/bin/sudo guuid=378b96dd-1700-0000-e5dc-bbef7f0a0000 pid=2687 /tmp/sample.bin guuid=7978feda-1700-0000-e5dc-bbef7a0a0000 pid=2682->guuid=378b96dd-1700-0000-e5dc-bbef7f0a0000 pid=2687 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/1654b308-7492-4485-9f57-0a4afedc44b6
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/bdd5a57f630e710dc77e777523087fbd104523cac853cba8b274bc60bec4d76b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bdd5a57f630e710dc77e777523087fbd104523cac853cba8b274bc60bec4d76b/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-29 12:46:12 UTC
File Type:
ELF32 Big (Exe)
AV detection:
5 of 36 (13.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xxk2k73dbzyq3r36o52sgcd7xuieki6kzbj4xkfsos6gbpwe25vq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260829-p5x26ahp2w/
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/bdd5a57f630e710dc77e777523087fbd104523cac853cba8b274bc60bec4d76b

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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
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

File information

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

Web download

Mirai

elf bdd5a57f630e710dc77e777523087fbd104523cac853cba8b274bc60bec4d76b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3909739/
  
Delivery method
Distributed via web download

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