MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b91a7dd04a68370ec07dac933441ac86f0003eff55838ab15943a9448b1fd91. 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 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b91a7dd04a68370ec07dac933441ac86f0003eff55838ab15943a9448b1fd91
SHA3-384 hash: 691e74091a5d13bdc51bca9ccdc5e597db1eeb1a0e03271a4c49f8c23d6e69298dcf22477a8434b9cc8d087c1ced70f9
SHA1 hash: 1f13fc1dc2ec6a69a88646f0424b5f4b145e4201
MD5 hash: 67862e4cb6acc2bd973b068e6f877713
humanhash: washington-high-rugby-robert
File name:.5r3fqt67ew531has4231.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:174'232 bytes
First seen:2026-02-23 01:42:03 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:y84T4Q5/RNB/9puv9rOVN6lb7DUgPu6G7HSq5pUiguzdrIKELDwbZnJEAn:qT4Q5JNB/9pulruPsG71KigQ4wRJEA
TLSH T168044A07B5C18CFCC49AD6744BAEA63AE975F09E123CB16B27C0AF231E4DE204E1D955
telfhash t19c51cc742e9a38a822d7a386730ee95df87305100de5b4a4df27bad9cf537c80e97452
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 :
47
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/8361ce19-eae7-4a85-8695-e8e86fe19dc3/
Detection(s):
Sanesecurity.Malware.28880.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29325.LC.Pl.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-81.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-7100807-0
Create hunting rule

Unix.Dropper.Mirai-7135868-0
Create hunting rule

Unix.Dropper.Mirai-7135891-0
Create hunting rule

Unix.Dropper.Mirai-7135892-0
Create hunting rule

Unix.Dropper.Mirai-7136013-0
Create hunting rule

Unix.Dropper.Mirai-7136034-0
Create hunting rule

Unix.Dropper.Mirai-7136057-0
Create hunting rule

Unix.Dropper.Mirai-7540662-0
Create hunting rule

Unix.Dropper.Mirai-7540663-0
Create hunting rule

Unix.Trojan.Mirai-8025795-0
Create hunting rule

Unix.Trojan.Mirai-9441505-0
Create hunting rule

Unix.Trojan.Mirai-9858729-0
Create hunting rule

Unix.Trojan.Mirai-9945193-0
Create hunting rule

Unix.Trojan.Mirai-9946826-0
Create hunting rule

Unix.Dropper.Mirai-10008433-0
Create hunting rule

Unix.Trojan.Mirai-10011027-0
Create hunting rule

Unix.Trojan.Mirai-10011918-0
Create hunting rule

Unix.Trojan.Mirai-10027280-0
Create hunting rule

Unix.Trojan.Mirai-10028946-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Sets a written file as executable
Runs as daemon
Creates directories
Receives data from a server
Creating a file
Opens a port
Sends data to a server
Launching a process
Substitutes an application name
Performs a bruteforce attack in the network
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
2
Number of processes launched:
6
Processes remaning?
true
Remote TCP ports scanned:
2323,23
Full report:
https://elfdigest.com/brief/4b91a7dd04a68370ec07dac933441ac86f0003eff55838ab15943a9448b1fd91
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Gathering data
Verdict:
Malicious
File Type:
elf.64.le
Link:
https://opentip.kaspersky.com/4b91a7dd04a68370ec07dac933441ac86f0003eff55838ab15943a9448b1fd91/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/1e653d48-0825-487f-aeea-3ce5edd5a30a
Behavior Graph:
Download SVG
%3 guuid=86a438fb-1a00-0000-efc4-4e63220c0000 pid=3106 /usr/bin/sudo guuid=f7d74bfd-1a00-0000-efc4-4e63280c0000 pid=3112 /tmp/sample.bin net guuid=86a438fb-1a00-0000-efc4-4e63220c0000 pid=3106->guuid=f7d74bfd-1a00-0000-efc4-4e63280c0000 pid=3112 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=f7d74bfd-1a00-0000-efc4-4e63280c0000 pid=3112->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=abe3c6fd-1a00-0000-efc4-4e632a0c0000 pid=3114 /usr/bin/dash guuid=f7d74bfd-1a00-0000-efc4-4e63280c0000 pid=3112->guuid=abe3c6fd-1a00-0000-efc4-4e632a0c0000 pid=3114 execve guuid=b3d983ff-1a00-0000-efc4-4e63340c0000 pid=3124 /home/sandbox/bin/watchdog net send-data zombie guuid=f7d74bfd-1a00-0000-efc4-4e63280c0000 pid=3112->guuid=b3d983ff-1a00-0000-efc4-4e63340c0000 pid=3124 clone guuid=c070f2fd-1a00-0000-efc4-4e632c0c0000 pid=3116 /usr/bin/rm guuid=abe3c6fd-1a00-0000-efc4-4e632a0c0000 pid=3114->guuid=c070f2fd-1a00-0000-efc4-4e632c0c0000 pid=3116 execve guuid=046139fe-1a00-0000-efc4-4e632d0c0000 pid=3117 /usr/bin/mkdir guuid=abe3c6fd-1a00-0000-efc4-4e632a0c0000 pid=3114->guuid=046139fe-1a00-0000-efc4-4e632d0c0000 pid=3117 execve guuid=2d4abdfe-1a00-0000-efc4-4e63300c0000 pid=3120 /usr/bin/mv guuid=abe3c6fd-1a00-0000-efc4-4e632a0c0000 pid=3114->guuid=2d4abdfe-1a00-0000-efc4-4e63300c0000 pid=3120 execve guuid=f84f45ff-1a00-0000-efc4-4e63320c0000 pid=3122 /usr/bin/chmod guuid=abe3c6fd-1a00-0000-efc4-4e632a0c0000 pid=3114->guuid=f84f45ff-1a00-0000-efc4-4e63320c0000 pid=3122 execve guuid=b3d983ff-1a00-0000-efc4-4e63340c0000 pid=3124->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con a517da07-e627-5e0b-a30f-f22574ed3708 173.249.30.113:7081 guuid=b3d983ff-1a00-0000-efc4-4e63340c0000 pid=3124->a517da07-e627-5e0b-a30f-f22574ed3708 send: 7B guuid=e44096ff-1a00-0000-efc4-4e63350c0000 pid=3125 /home/sandbox/bin/watchdog guuid=b3d983ff-1a00-0000-efc4-4e63340c0000 pid=3124->guuid=e44096ff-1a00-0000-efc4-4e63350c0000 pid=3125 clone guuid=983b9bff-1a00-0000-efc4-4e63360c0000 pid=3126 /home/sandbox/bin/watchdog net net-scan send-data guuid=b3d983ff-1a00-0000-efc4-4e63340c0000 pid=3124->guuid=983b9bff-1a00-0000-efc4-4e63360c0000 pid=3126 clone guuid=efd69dff-1a00-0000-efc4-4e63370c0000 pid=3127 /home/sandbox/bin/watchdog guuid=b3d983ff-1a00-0000-efc4-4e63340c0000 pid=3124->guuid=efd69dff-1a00-0000-efc4-4e63370c0000 pid=3127 clone guuid=7952a2ff-1a00-0000-efc4-4e63380c0000 pid=3128 /home/sandbox/bin/watchdog net net-scan send-data guuid=b3d983ff-1a00-0000-efc4-4e63340c0000 pid=3124->guuid=7952a2ff-1a00-0000-efc4-4e63380c0000 pid=3128 clone guuid=983b9bff-1a00-0000-efc4-4e63360c0000 pid=3126->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con 2072beec-db75-5ebe-946b-9114a640fa31 179.94.25.30:23 guuid=983b9bff-1a00-0000-efc4-4e63360c0000 pid=3126->2072beec-db75-5ebe-946b-9114a640fa31 send: 126B guuid=983b9bff-1a00-0000-efc4-4e63360c0000 pid=3126|send-data send-data to 4078 IP addresses review logs to see them all guuid=983b9bff-1a00-0000-efc4-4e63360c0000 pid=3126->guuid=983b9bff-1a00-0000-efc4-4e63360c0000 pid=3126|send-data send guuid=7952a2ff-1a00-0000-efc4-4e63380c0000 pid=3128->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con f347389e-5214-5d68-82f4-f54de3d79fe7 34.160.4.126:23 guuid=7952a2ff-1a00-0000-efc4-4e63380c0000 pid=3128->f347389e-5214-5d68-82f4-f54de3d79fe7 send: 40B guuid=7952a2ff-1a00-0000-efc4-4e63380c0000 pid=3128|send-data send-data to 4097 IP addresses review logs to see them all guuid=7952a2ff-1a00-0000-efc4-4e63380c0000 pid=3128->guuid=7952a2ff-1a00-0000-efc4-4e63380c0000 pid=3128|send-data send
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0b34fc6b-801b-407c-810f-8e346850fd27
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4b91a7dd04a68370ec07dac933441ac86f0003eff55838ab15943a9448b1fd91
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b91a7dd04a68370ec07dac933441ac86f0003eff55838ab15943a9448b1fd91/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-02-22 20:56:41 UTC
File Type:
ELF64 Little (Exe)
AV detection:
24 of 36 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=joi2pxieu2bxb3ah3letgra2zbxqaa7p6vmdrkyvsq5jisfr7wiq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:mirai defense_evasion discovery linux
Link:
https://tria.ge/reports/260223-b4tfpafz5a/
Behaviour
Reads runtime system information
Writes file to tmp directory
Changes its process name
File and Directory Permissions Modification
Modifies Watchdog functionality
Contacts a large (47204) amount of remote hosts
Creates a large amount of network flows
Malware Config
C2 Extraction:
cnc.nekololis.ovh
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/4b91a7dd04a68370ec07dac933441ac86f0003eff55838ab15943a9448b1fd91

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_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
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:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Generic_Threat_3bcc1630
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_0cd591cd
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_28a2fe0c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_33b4111a
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_620087b9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_807911a2
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_9e9530a7
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_a33a8363
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d0c57a2e
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d4227dbf
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d996d335
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_01e4a728
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_0bce98a2
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_1e0c5ce0
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_520deeb8
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_6a77af0f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_e0cf29e2
Create hunting rule
Author:Elastic Security
Rule name:Mal_LNX_Mirai_Botnet_ELF
Create hunting rule
Author:Phatcharadol Thangplub
Description:Use to detect Mirai botnet, and there variants.
Rule name:Mirai_Botnet_Malware
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Mirai Botnet Malware
Reference:Internal Research
Rule name:Mirai_Botnet_Malware_RID2EF6
Create hunting rule
Author:Florian Roth
Description:Detects Mirai Botnet Malware
Reference:Internal Research
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 4b91a7dd04a68370ec07dac933441ac86f0003eff55838ab15943a9448b1fd91

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3783773/
  
Delivery method
Distributed via web download

Comments