MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f762c3e51a32e4e93fd41fe3be4eac71606d84cc1372f5e100bff5b35241e74f. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f762c3e51a32e4e93fd41fe3be4eac71606d84cc1372f5e100bff5b35241e74f
SHA3-384 hash: 0206c61284932bd326166f9cb7df8515f14b069a763eab34be5a85534019f12a327c4ab285355675ae23217b74ff8fa6
SHA1 hash: 332af61021eebf46972953e6bad1ffa078c4c946
MD5 hash: 74a66c4ed936a57b0fa66797ba414db1
humanhash: music-edward-december-fanta
File name:arm.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:111'828 bytes
First seen:2026-01-11 00:58:06 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:WYuJ/HxMTaLpot5jQMtjW7fFnnfr9rVDjwu6YD48DjZOmdhXoUTHNyCfvD9+f:WYutHqt5jWxrhND4UPtw
TLSH T199B34C96FD81E612C6C621B7FB1E428C372717B8D3EA72069D116F21378A56B0F7B141
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 :
45
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade mirai rust
Link:
https://www.filescan.io/uploads/6962f5ab30368802bb7f9d5e/reports/3cc7c9c0-51a0-478f-846e-db7b56135bfb/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-10T20:05:00Z UTC
Last seen:
2026-01-10T23:16:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/f762c3e51a32e4e93fd41fe3be4eac71606d84cc1372f5e100bff5b35241e74f/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/8ac677b4-e2f3-4e53-9abc-88ade4fe372e
Behavior Graph:
Download SVG
%3 guuid=2f912f8c-1e00-0000-b172-cc2a3e0c0000 pid=3134 /usr/bin/sudo guuid=6eb2b08d-1e00-0000-b172-cc2a3f0c0000 pid=3135 /tmp/sample.bin guuid=2f912f8c-1e00-0000-b172-cc2a3e0c0000 pid=3134->guuid=6eb2b08d-1e00-0000-b172-cc2a3f0c0000 pid=3135 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2ec40ae3-e705-40b8-b920-cb3cc3572ee7
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1848115
Signature
Connects to many ports of the same IP (likely port scanning)
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
Suricata IDS alerts for network traffic
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: 1848115 Sample: arm.kok.elf Startdate: 11/01/2026 Architecture: LINUX Score: 100 100 171.225.223.29, 10350, 12549, 13013 VIETEL-AS-APViettelGroupVN Viet Nam 2->100 102 128.116.31.33, 53824 ROBLOX-PRODUCTIONUS United States 2->102 104 20 other IPs or domains 2->104 106 Suricata IDS alerts for network traffic 2->106 108 Multi AV Scanner detection for submitted file 2->108 110 Connects to many ports of the same IP (likely port scanning) 2->110 11 arm.kok.elf 2->11         started        14 unknown .update 2->14         started        16 dash rm 2->16         started        18 dash rm 2->18         started        signatures3 process4 signatures5 136 Sample tries to kill multiple processes (SIGKILL) 11->136 138 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->138 20 arm.kok.elf 11->20         started        process6 file7 82 /var/spool/cron/root, ASCII 20->82 dropped 84 /var/spool/cron/crontabs/root, ASCII 20->84 dropped 86 /root/.bashrc, ASCII 20->86 dropped 88 11 other files (10 malicious) 20->88 dropped 112 Sample tries to set files in /etc globally writable 20->112 114 Sample tries to persist itself using /etc/profile 20->114 116 Drops files in suspicious directories 20->116 118 4 other signatures 20->118 24 arm.kok.elf sh 20->24         started        26 arm.kok.elf sh 20->26         started        28 arm.kok.elf sh 20->28         started        30 101 other processes 20->30 signatures8 process9 signatures10 33 sh S99backup0 24->33         started        35 sh S99backup1 26->35         started        37 sh S99backup2 28->37         started        140 Sample tries to kill a massive number of system processes 30->140 142 Sample tries to kill multiple processes (SIGKILL) 30->142 39 sh S99network 30->39         started        41 sh cp 30->41         started        45 sh crontab 30->45         started        47 81 other processes 30->47 process11 file12 49 S99backup0 33->49         started        51 S99backup1 35->51         started        53 S99backup2 37->53         started        55 S99network 39->55         started        90 /usr/bin/.update, ELF 41->90 dropped 122 Writes identical ELF files to multiple locations 41->122 124 Drops invisible ELF files 41->124 126 Drops files in suspicious directories 41->126 92 /var/spool/cron/crontabs/tmp.OGS3h2, ASCII 45->92 dropped 128 Sample tries to persist itself using cron 45->128 130 Executes the "crontab" command typically for achieving persistence 45->130 94 /var/log/.update, ELF 47->94 dropped 96 /var/jbx/shared/.update, ELF 47->96 dropped 98 /boot/.update, ELF 47->98 dropped 132 Sample deletes itself 47->132 134 Terminates several processes with shell command 'killall' 47->134 57 sh crontab 47->57         started        60 .monitor 47->60         started        62 sh .update 47->62         started        signatures13 process14 signatures15 64 S99backup0 .update 49->64         started        72 103 other processes 49->72 66 S99backup1 .update 51->66         started        74 101 other processes 51->74 68 S99backup2 .update 53->68         started        76 97 other processes 53->76 70 S99network .update 55->70         started        78 95 other processes 55->78 120 Executes the "crontab" command typically for achieving persistence 57->120 80 2 other processes 60->80 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/f762c3e51a32e4e93fd41fe3be4eac71606d84cc1372f5e100bff5b35241e74f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f762c3e51a32e4e93fd41fe3be4eac71606d84cc1372f5e100bff5b35241e74f/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-11 00:56:29 UTC
File Type:
ELF32 Little (Exe)
AV detection:
13 of 38 (34.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=65rmhzi2glsosp6ud7r34tvmofqg3bgmcnzplyiax723gusb45hq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai
Link:
https://tria.ge/reports/260111-bbm37sbz5c/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/bf527216-f33a-4116-aee2-7aab5b4855ca
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/f762c3e51a32e4e93fd41fe3be4eac71606d84cc1372f5e100bff5b35241e74f

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 f762c3e51a32e4e93fd41fe3be4eac71606d84cc1372f5e100bff5b35241e74f

(this sample)

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

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