MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcbcdbf1fec75b759eb1005a06186eb73be1912e32975627536ef625b4355329. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bcbcdbf1fec75b759eb1005a06186eb73be1912e32975627536ef625b4355329
SHA3-384 hash: 51a3f1caa4f7a3ef3bbead9cad9045aada66f75fd9cbb1217e6c8aab1a5ef9c8cdad68829052eefd668e19468c375c06
SHA1 hash: 02eb76ed4f090995da8a21670fdaaf2487ed9695
MD5 hash: 5f6686db74b40e1e512fd4c26322ecdc
humanhash: eleven-potato-pluto-beryllium
File name:arm.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:111'828 bytes
First seen:2026-01-10 01:54:53 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:WYuJ/HxMTaLpot5jQMtjWZfFnnfr9rVDjwu6YD48DjZOmdhXoUTHNyCfvD9+f:WYutHqt5jMxrhND4UPtw
TLSH T1CFB34C96FD81E612C6C621B7FB1E428C372717B8D3EA72069D116F21378A56B0F7B141
telfhash t18db012f0e1b0818a25f8e08b420874480c70751235057d02405c7f074ca1600300fa06
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 :
66
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
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Unix.Trojan.Mirai-10010127-0
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade mirai rust
Link:
https://www.filescan.io/uploads/6961b19e1a20a4c87b1a3e42/reports/e734e603-aa37-4a74-9369-baa1fd6dd1fb/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-09T23:02:00Z UTC
Last seen:
2026-01-10T00:53:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/bcbcdbf1fec75b759eb1005a06186eb73be1912e32975627536ef625b4355329/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/f7753a45-37c3-463a-9c8a-0463b2fd3812
Behavior Graph:
Download SVG
%3 guuid=a2246de7-1600-0000-5456-24398a0c0000 pid=3210 /usr/bin/sudo guuid=029d34e9-1600-0000-5456-2439900c0000 pid=3216 /tmp/sample.bin guuid=a2246de7-1600-0000-5456-24398a0c0000 pid=3210->guuid=029d34e9-1600-0000-5456-2439900c0000 pid=3216 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1b8c1b14-48b0-4191-b9d9-d91fc02096fb
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1847754
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'
Uses IRC for communication with a C&C
Writes identical ELF files to multiple locations
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1847754 Sample: arm.kok.elf Startdate: 10/01/2026 Architecture: LINUX Score: 100 98 143.20.58.43, 30120 LANCAMANTOANISERVICOSDEINFORMATICALTDA-MEBR United States 2->98 100 91.92.241.12, 48158, 6969 THEZONEBG Bulgaria 2->100 102 19 other IPs or domains 2->102 104 Multi AV Scanner detection for submitted file 2->104 106 Uses IRC for communication with a C&C 2->106 11 arm.kok.elf 2->11         started        14 dash rm 2->14         started        16 dash rm 2->16         started        signatures3 process4 signatures5 132 Sample tries to kill multiple processes (SIGKILL) 11->132 134 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->134 18 arm.kok.elf 11->18         started        process6 file7 80 /var/spool/cron/root, ASCII 18->80 dropped 82 /var/spool/cron/crontabs/root, ASCII 18->82 dropped 84 /root/.bashrc, ASCII 18->84 dropped 86 11 other files (10 malicious) 18->86 dropped 108 Sample tries to set files in /etc globally writable 18->108 110 Sample tries to persist itself using /etc/profile 18->110 112 Drops files in suspicious directories 18->112 114 4 other signatures 18->114 22 arm.kok.elf sh 18->22         started        24 arm.kok.elf sh 18->24         started        26 arm.kok.elf sh 18->26         started        28 91 other processes 18->28 signatures8 process9 signatures10 31 sh S99backup0 22->31         started        33 sh S99backup1 24->33         started        35 sh S99backup2 26->35         started        136 Sample tries to kill a massive number of system processes 28->136 138 Sample tries to kill multiple processes (SIGKILL) 28->138 37 sh S99network 28->37         started        39 sh cp 28->39         started        43 sh crontab 28->43         started        45 67 other processes 28->45 process11 file12 47 S99backup0 31->47         started        49 S99backup1 33->49         started        51 S99backup2 35->51         started        53 S99network 37->53         started        88 /usr/bin/.update, ELF 39->88 dropped 118 Writes identical ELF files to multiple locations 39->118 120 Drops invisible ELF files 39->120 122 Drops files in suspicious directories 39->122 90 /var/spool/cron/crontabs/tmp.LHdycF, ASCII 43->90 dropped 124 Sample tries to persist itself using cron 43->124 126 Executes the "crontab" command typically for achieving persistence 43->126 92 /var/log/.update, ELF 45->92 dropped 94 /var/jbx/shared/.update, ELF 45->94 dropped 96 /boot/.update, ELF 45->96 dropped 128 Sample deletes itself 45->128 130 Terminates several processes with shell command 'killall' 45->130 55 sh crontab 45->55         started        58 .monitor 45->58         started        60 sh .update 45->60         started        signatures13 process14 signatures15 62 S99backup0 .update 47->62         started        70 121 other processes 47->70 64 S99backup1 .update 49->64         started        72 117 other processes 49->72 66 S99backup2 .update 51->66         started        74 115 other processes 51->74 68 S99network .update 53->68         started        76 111 other processes 53->76 116 Executes the "crontab" command typically for achieving persistence 55->116 78 2 other processes 58->78 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/bcbcdbf1fec75b759eb1005a06186eb73be1912e32975627536ef625b4355329
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bcbcdbf1fec75b759eb1005a06186eb73be1912e32975627536ef625b4355329/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/bcbcdbf1fec75b759eb1005a06186eb73be1912e32975627536ef625b4355329
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-10 01:55:45 UTC
File Type:
ELF32 Little (Exe)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xs6nx4p6y5nxlhvrabnamgdow456dejogklvmj2tn33clnbvkmuq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai
Link:
https://tria.ge/reports/260110-ccf7qaay8a/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/38b0da01-e596-40a6-82bc-bd9a64d68dc1
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/bcbcdbf1fec75b759eb1005a06186eb73be1912e32975627536ef625b4355329

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_irc_catcher
Create hunting rule
Author:@_lubiedo
Description:Find new ELF IRC samples
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 bcbcdbf1fec75b759eb1005a06186eb73be1912e32975627536ef625b4355329

(this sample)

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

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