MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3d4593590fbef78f4c431a8e1fb2b51e85bda3ae3352f221a3b9de3472e74fe4. 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: 3d4593590fbef78f4c431a8e1fb2b51e85bda3ae3352f221a3b9de3472e74fe4
SHA3-384 hash: be66e983bf80c0256b0ff77ead1346c5214dfae7354fd60f9bac8a2f8903071639d7df74faa9c9a5bbce4efaaee05829
SHA1 hash: 09f00944f40a99b01218865626ae99ce945a11af
MD5 hash: a94b86d70ff8561f22045ffa4844634e
humanhash: lithium-nitrogen-may-solar
File name:arm7.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:136'448 bytes
First seen:2026-01-12 18:15:17 UTC
Last seen:2026-01-13 13:17:56 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:7ZyezWeKKtcbW7jLbCDuaigpZhbfWNBVS1r/z5/BZB+:7ZyC/KKtcAbGuaigpZhbfiBVqzhBZB+
TLSH T1C4D33A56FD819F11D5C721BAFA9E414933136FB8D3FA7112CD206F61238A99B0F7A212
telfhash t185e02b2747611aac46f16624a8ec7526a3ed32591f1121aa640cce49d7b2fc6b415026
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
3
# of downloads :
55
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

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gcc masquerade mirai rust
Link:
https://www.filescan.io/uploads/69653a4dc82deb762e7a1a03/reports/fd92166a-361f-4216-b847-4a2f0234eb05/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-12T15:07:00Z UTC
Last seen:
2026-01-12T16:46:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/3d4593590fbef78f4c431a8e1fb2b51e85bda3ae3352f221a3b9de3472e74fe4/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/1476e737-818c-4c6c-89e4-122571c1c8ab
Behavior Graph:
Download SVG
%3 guuid=0b0f345d-1600-0000-e5d7-2dc8df0d0000 pid=3551 /usr/bin/sudo guuid=71efe25f-1600-0000-e5d7-2dc8e60d0000 pid=3558 /tmp/sample.bin guuid=0b0f345d-1600-0000-e5d7-2dc8df0d0000 pid=3551->guuid=71efe25f-1600-0000-e5d7-2dc8e60d0000 pid=3558 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/7a9cd236-a5bb-4d46-8e91-e1d281ebcfbd
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1849416
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
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: 1849416 Sample: arm7.kok.elf Startdate: 12/01/2026 Architecture: LINUX Score: 100 98 144.126.148.148, 10642, 10924, 11635 LOYOLAUS United States 2->98 100 82.167.50.156, 32547 ITCITCASnumberSA Saudi Arabia 2->100 102 19 other IPs or domains 2->102 118 Multi AV Scanner detection for submitted file 2->118 120 Connects to many ports of the same IP (likely port scanning) 2->120 11 arm7.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 arm7.kok.elf 11->18         started        process6 file7 90 /var/spool/cron/root, ASCII 18->90 dropped 92 /var/spool/cron/crontabs/root, ASCII 18->92 dropped 94 /root/.bashrc, ASCII 18->94 dropped 96 7 other files (6 malicious) 18->96 dropped 122 Sample tries to set files in /etc globally writable 18->122 124 Sample tries to persist itself using /etc/profile 18->124 126 Drops files in suspicious directories 18->126 128 4 other signatures 18->128 22 arm7.kok.elf sh 18->22         started        24 arm7.kok.elf sh 18->24         started        26 arm7.kok.elf sh 18->26         started        28 115 other processes 18->28 signatures8 process9 signatures10 31 sh S99network 22->31         started        33 sh cp 24->33         started        37 sh crontab 26->37         started        39 sh 26->39         started        136 Sample tries to kill a massive number of system processes 28->136 138 Sample tries to kill multiple processes (SIGKILL) 28->138 41 sh cp 28->41         started        43 sh cp 28->43         started        45 sh cp 28->45         started        47 99 other processes 28->47 process11 file12 49 S99network 31->49         started        72 /usr/bin/.update, ELF 33->72 dropped 104 Writes identical ELF files to multiple locations 33->104 106 Drops invisible ELF files 33->106 108 Drops files in suspicious directories 33->108 74 /var/spool/cron/crontabs/tmp.sH8ju8, ASCII 37->74 dropped 110 Sample tries to persist itself using cron 37->110 112 Executes the "crontab" command typically for achieving persistence 37->112 51 sh crontab 39->51         started        76 /var/jbx/shared/.update, ELF 41->76 dropped 78 /var/log/.update, ELF 43->78 dropped 80 /var/.update, ELF 45->80 dropped 82 /root/.update, ELF 47->82 dropped 84 /mnt/.update, ELF 47->84 dropped 86 /media/.update, ELF 47->86 dropped 88 2 other malicious files 47->88 dropped 114 Sample deletes itself 47->114 116 Terminates several processes with shell command 'killall' 47->116 54 .monitor 47->54         started        56 sh arm7.kok.elf 47->56         started        58 sh arm7.kok.elf 47->58         started        signatures13 process14 signatures15 60 S99network arm7.kok.elf 49->60         started        62 S99network arm7.kok.elf 49->62         started        64 S99network arm7.kok.elf 49->64         started        70 99 other processes 49->70 130 Executes the "crontab" command typically for achieving persistence 51->130 66 .monitor arm7.kok.elf 54->66         started        68 .monitor sleep 54->68         started        process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/3d4593590fbef78f4c431a8e1fb2b51e85bda3ae3352f221a3b9de3472e74fe4
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3d4593590fbef78f4c431a8e1fb2b51e85bda3ae3352f221a3b9de3472e74fe4/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/3d4593590fbef78f4c431a8e1fb2b51e85bda3ae3352f221a3b9de3472e74fe4
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-12 18:15:43 UTC
File Type:
ELF32 Little (Exe)
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hvczgwipx33y6tcddkhb7mvvd2c33i5ognjpeindxhpdi4xhj7sa._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/260112-wv8jgaax9f/
Behaviour
Command and Scripting Interpreter: Unix Shell
Reads runtime system information
Writes file to shm directory
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Deletes log files
Enumerates running processes
Modifies init.d
Modifies rc script
Write file to user bin folder
Executes dropped EXE
Unexpected DNS network traffic destination
Creates a large amount of network flows
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/82855d62-9cb4-4f2f-ad3c-891e76beee90
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/3d4593590fbef78f4c431a8e1fb2b51e85bda3ae3352f221a3b9de3472e74fe4

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_8299c877
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 3d4593590fbef78f4c431a8e1fb2b51e85bda3ae3352f221a3b9de3472e74fe4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3749715/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3757309/

Comments