MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3946e9f48231ef8ef63e61ee43a053f4780af58849f659328bea6bd9bf021698. 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: 3946e9f48231ef8ef63e61ee43a053f4780af58849f659328bea6bd9bf021698
SHA3-384 hash: bc0abfcb93b26b1fb53c9a0816f38647a9f7395a3a1d5fb42931eafe6955ae43e9ff27ea15a313811c463878de1c3116
SHA1 hash: 96a5c7b1dbbc9eff13d97f6caf87f513c4238636
MD5 hash: cee5b1c7bd5feb7e812d85799f4f9e82
humanhash: pizza-alaska-tennessee-timing
File name:arm7.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:137'280 bytes
First seen:2026-01-13 19:43:25 UTC
Last seen:2026-01-14 06:23:03 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:gAx3sTRd9CKcGPYkEDFCDuaukpZhbfaNBVSt/Lz5/T2d+:gAx3+CKcGPYkoGuaukpZhbfeBV6zhT2I
TLSH T113D31956FD819F05D5C721FAFA5E418933136FB8D3FA71029D206F61238A59B0F7A212
telfhash t1ead05e6bd7811a4c53c6890169de4a2af2a8311a1b4019fa524cae0a8a37ed2b50da03
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
37
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/6966a09114b4fa2f67d3746c/reports/457c4ff7-059a-4be5-bd2c-dbe5e5f145cc/overview
Result
Gathering data
Verdict:
Malicious
File Type:
ELF 32 LE
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/3946e9f48231ef8ef63e61ee43a053f4780af58849f659328bea6bd9bf021698/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/8b312924-9b76-4a2f-8352-91819e603f56
Behavior Graph:
Download SVG
%3 guuid=7376f284-1600-0000-b6b7-cb66c30b0000 pid=3011 /usr/bin/sudo guuid=e275e886-1600-0000-b6b7-cb66c90b0000 pid=3017 /tmp/sample.bin guuid=7376f284-1600-0000-b6b7-cb66c30b0000 pid=3011->guuid=e275e886-1600-0000-b6b7-cb66c90b0000 pid=3017 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/110a8c5b-02e2-4845-b622-6127e70aa877
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1850173
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 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: 1850173 Sample: arm7.kok.elf Startdate: 13/01/2026 Architecture: LINUX Score: 100 98 91.92.241.12, 48146, 6969 THEZONEBG Bulgaria 2->98 100 109.202.202.202, 80 INIT7CH Switzerland 2->100 102 2 other IPs or domains 2->102 104 Multi AV Scanner detection for submitted file 2->104 11 arm7.kok.elf 2->11         started        signatures3 process4 signatures5 108 Sample tries to kill multiple processes (SIGKILL) 11->108 110 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->110 14 arm7.kok.elf 11->14         started        process6 file7 90 /var/spool/cron/root, ASCII 14->90 dropped 92 /var/spool/cron/crontabs/root, ASCII 14->92 dropped 94 /root/.bashrc, ASCII 14->94 dropped 96 7 other files (6 malicious) 14->96 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 arm7.kok.elf sh 14->18         started        20 arm7.kok.elf sh 14->20         started        22 arm7.kok.elf sh 14->22         started        24 24 other processes 14->24 signatures8 process9 signatures10 27 sh cp 18->27         started        31 sh .monitor 20->31         started        33 sh crontab 22->33         started        35 sh 22->35         started        106 Sample tries to kill multiple processes (SIGKILL) 24->106 37 sh S99network 24->37         started        39 sh cp 24->39         started        41 sh cp 24->41         started        43 22 other processes 24->43 process11 file12 74 /usr/bin/.update, ELF 27->74 dropped 112 Writes identical ELF files to multiple locations 27->112 114 Drops invisible ELF files 27->114 116 Drops files in suspicious directories 27->116 45 .monitor 31->45         started        76 /var/spool/cron/crontabs/tmp.gbcKhc, ASCII 33->76 dropped 118 Sample tries to persist itself using cron 33->118 120 Executes the "crontab" command typically for achieving persistence 33->120 47 sh crontab 35->47         started        50 S99network 37->50         started        78 /var/jbx/shared/.update, ELF 39->78 dropped 80 /var/log/.update, ELF 41->80 dropped 82 /var/.update, ELF 43->82 dropped 84 /root/.update, ELF 43->84 dropped 86 /mnt/.update, ELF 43->86 dropped 88 3 other malicious files 43->88 dropped 122 Sample deletes itself 43->122 124 Terminates several processes with shell command 'killall' 43->124 52 sh arm7.kok.elf 43->52         started        54 sh arm7.kok.elf 43->54         started        56 sh arm7.kok.elf 43->56         started        signatures13 process14 signatures15 58 .monitor arm7.kok.elf 45->58         started        60 .monitor arm7.kok.elf 45->60         started        62 .monitor arm7.kok.elf 45->62         started        70 39 other processes 45->70 134 Executes the "crontab" command typically for achieving persistence 47->134 64 S99network arm7.kok.elf 50->64         started        66 S99network arm7.kok.elf 50->66         started        68 S99network arm7.kok.elf 50->68         started        72 29 other processes 50->72 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/3946e9f48231ef8ef63e61ee43a053f4780af58849f659328bea6bd9bf021698
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3946e9f48231ef8ef63e61ee43a053f4780af58849f659328bea6bd9bf021698/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/3946e9f48231ef8ef63e61ee43a053f4780af58849f659328bea6bd9bf021698
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-13 19:44:11 UTC
File Type:
ELF32 Little (Exe)
AV detection:
13 of 36 (36.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hfdot5ecghxy55r6mhxehict6r4av5mijh3fsmul5jv5tpycc2ma._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/260113-yfy3laht5f/
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
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/552d6708-78f6-4701-aa03-e6a56f202484
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/3946e9f48231ef8ef63e61ee43a053f4780af58849f659328bea6bd9bf021698

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 3946e9f48231ef8ef63e61ee43a053f4780af58849f659328bea6bd9bf021698

(this sample)

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

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