MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 64fcc78443f443f1a15004d24e3edfa6d338e4d7aa6abf0fb0518182707f266f. 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: 11


Intelligence 11 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 64fcc78443f443f1a15004d24e3edfa6d338e4d7aa6abf0fb0518182707f266f
SHA3-384 hash: 468ddb038682251f57486b88a388e265901116361a76569b7b071a03e7b1228d9de48b440b5e940f0b7d2e17d3289182
SHA1 hash: 6fa08096a6bb9a55f6e59d3b9dc4d9940b36f629
MD5 hash: 9ddfb16fa8840a9d54d43cc335df877d
humanhash: thirteen-cup-oscar-one
File name:arm.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:104'020 bytes
First seen:2026-01-03 18:32:43 UTC
Last seen:2026-01-04 12:58:55 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:cOM9ec6y6RWqTPnpQDUNzRoz7eQcoC0JcjwO/sLn4fiSVpv6ODGK:cOMIJy+WqTPpQGez7vXC0axJ8K
TLSH T1CCA34C92FD81DA12C6C562B7FB1E428D372713A8D2EB33038E265F21678A51B0E7B554
telfhash t1112102e3e7880edc6fe1cb1046cae226a27834767b145863999a6e8b4017396f03b119
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 :
2
# of downloads :
63
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-10001386-0
Create hunting rule

Unix.Trojan.Mirai-10010127-0
Create hunting rule

Unix.Trojan.Mirai-10017351-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-03T15:40:00Z UTC
Last seen:
2026-01-04T01:46:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/64fcc78443f443f1a15004d24e3edfa6d338e4d7aa6abf0fb0518182707f266f/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/e0e85049-2ba5-4b29-b071-594cf5e9e7ba
Behavior Graph:
Download SVG
%3 guuid=66620950-1a00-0000-51ae-b933020b0000 pid=2818 /usr/bin/sudo guuid=4fd8d152-1a00-0000-51ae-b933070b0000 pid=2823 /tmp/sample.bin guuid=66620950-1a00-0000-51ae-b933020b0000 pid=2818->guuid=4fd8d152-1a00-0000-51ae-b933070b0000 pid=2823 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/296744f7-10ae-431c-a680-f43e6e9da00f
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1844260
Signature
Drops files in suspicious directories
Drops invisible ELF files
Executes the "crontab" command typically for achieving persistence
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill a massive number of system processes
Sample tries to kill multiple processes (SIGKILL)
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Terminates several processes with shell command 'killall'
Writes identical ELF files to multiple locations
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1844260 Sample: arm.kok.elf Startdate: 03/01/2026 Architecture: LINUX Score: 100 94 31.11.211.193, 10383, 11117, 13855 VECTRANET-ASAlZwyciestwa25381-525GdyniaPolandPL Poland 2->94 96 91.92.241.12, 48194, 6969 THEZONEBG Bulgaria 2->96 98 15 other IPs or domains 2->98 100 Multi AV Scanner detection for submitted file 2->100 11 arm.kok.elf 2->11         started        signatures3 process4 signatures5 122 Sample tries to kill multiple processes (SIGKILL) 11->122 124 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->124 14 arm.kok.elf 11->14         started        process6 file7 86 /var/spool/cron/root, ASCII 14->86 dropped 88 /var/spool/cron/crontabs/root, ASCII 14->88 dropped 90 /root/.bashrc, ASCII 14->90 dropped 92 11 other files (10 malicious) 14->92 dropped 126 Sample tries to set files in /etc globally writable 14->126 128 Sample tries to persist itself using /etc/profile 14->128 130 Drops files in suspicious directories 14->130 132 4 other signatures 14->132 18 arm.kok.elf sh 14->18         started        20 arm.kok.elf sh 14->20         started        22 arm.kok.elf sh 14->22         started        24 50 other processes 14->24 signatures8 process9 signatures10 27 sh .monitor 18->27         started        29 sh S99backup0 20->29         started        31 sh S99backup1 22->31         started        118 Sample tries to kill a massive number of system processes 24->118 120 Sample tries to kill multiple processes (SIGKILL) 24->120 33 sh S99backup2 24->33         started        35 sh S99network 24->35         started        37 sh cp 24->37         started        41 49 other processes 24->41 process11 file12 43 .monitor 27->43         started        45 S99backup0 29->45         started        47 S99backup1 31->47         started        49 S99backup2 33->49         started        51 S99network 35->51         started        76 /usr/bin/.update, ELF 37->76 dropped 104 Writes identical ELF files to multiple locations 37->104 106 Drops invisible ELF files 37->106 108 Drops files in suspicious directories 37->108 78 /var/spool/cron/crontabs/tmp.wcGEOS, ASCII 41->78 dropped 80 /var/log/.update, ELF 41->80 dropped 82 /var/jbx/shared/.update, ELF 41->82 dropped 84 /boot/.update, ELF 41->84 dropped 110 Sample deletes itself 41->110 112 Sample tries to persist itself using cron 41->112 114 Executes the "crontab" command typically for achieving persistence 41->114 116 Terminates several processes with shell command 'killall' 41->116 53 sh crontab 41->53         started        56 sh .update 41->56         started        signatures13 process14 signatures15 66 184 other processes 43->66 58 S99backup0 .update 45->58         started        68 117 other processes 45->68 60 S99backup1 .update 47->60         started        70 113 other processes 47->70 62 S99backup2 .update 49->62         started        72 109 other processes 49->72 64 S99network .update 51->64         started        74 109 other processes 51->74 102 Executes the "crontab" command typically for achieving persistence 53->102 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/64fcc78443f443f1a15004d24e3edfa6d338e4d7aa6abf0fb0518182707f266f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/64fcc78443f443f1a15004d24e3edfa6d338e4d7aa6abf0fb0518182707f266f/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/64fcc78443f443f1a15004d24e3edfa6d338e4d7aa6abf0fb0518182707f266f
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-03 19:20:53 UTC
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mt6mpbcd6rb7dikqatje4pw7u3jtrzgxvjvl6d5qkgaye4d7ezxq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai
Link:
https://tria.ge/reports/260103-w641estphw/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/26612c66-f84f-45f9-91e7-36fd770f9d72
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.64
Link:
https://yomi.yoroi.company/submissions/64fcc78443f443f1a15004d24e3edfa6d338e4d7aa6abf0fb0518182707f266f

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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
Rule name:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
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_Threat_d94e1020
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 64fcc78443f443f1a15004d24e3edfa6d338e4d7aa6abf0fb0518182707f266f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3749723/
  
Delivery method
Distributed via web download

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