MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 32a28b0a2b16b3f4d89f1931ee19a6726c967b9da88e8da04548dd90b900e1cd. 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: 32a28b0a2b16b3f4d89f1931ee19a6726c967b9da88e8da04548dd90b900e1cd
SHA3-384 hash: 886f70bcd710495eabb69e167bc22ddac40b2184cd8030613199be8c5ce14234a2d84e72aa755a0a675c0a907863e60d
SHA1 hash: a1798add9ac06d992009adf9195a76643ff524a0
MD5 hash: 37ae9984379157a0ace035bcc4ae8823
humanhash: johnny-four-blossom-stream
File name:arm7.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:136'416 bytes
First seen:2026-01-11 18:59:33 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:/azfTcd4YYlzfmDbdSDHaJgZphbfnNagVlrvzpg6ON+:/azbdYYlzGdWHaJgZphbfNagTzi6ON+
TLSH T146D33A56FD919F11D5C721BAFAAE414933136FB8D3FA7111CD206F61238A99B0F7A202
telfhash t186e0ab3bc3500aac15d1912064ee302ae76c30ca0f2075556088ca9a9622f98b021034
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
46
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:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gcc masquerade mirai rust
Link:
https://www.filescan.io/uploads/6963f35d30368802bb806fad/reports/1db09cc7-f528-4148-9f72-10194d313e79/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-11T12:03:00Z UTC
Last seen:
2026-01-11T18:53:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/32a28b0a2b16b3f4d89f1931ee19a6726c967b9da88e8da04548dd90b900e1cd/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/d399a631-6fb0-463d-a1c9-0910c36178d0
Behavior Graph:
Download SVG
%3 guuid=0a2cbbef-1a00-0000-2410-67c96e0a0000 pid=2670 /usr/bin/sudo guuid=872d1cf2-1a00-0000-2410-67c9770a0000 pid=2679 /tmp/sample.bin guuid=0a2cbbef-1a00-0000-2410-67c96e0a0000 pid=2670->guuid=872d1cf2-1a00-0000-2410-67c9770a0000 pid=2679 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/5c6fdfc0-374e-4cce-8214-f74cc812f1ea
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1848553
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: 1848553 Sample: arm7.kok.elf Startdate: 11/01/2026 Architecture: LINUX Score: 100 98 81.181.244.19, 27015 RTDBucharestRomaniaRO Romania 2->98 100 144.126.145.88, 10004, 10038, 10191 LOYOLAUS United States 2->100 102 22 other IPs or domains 2->102 118 Suricata IDS alerts for network traffic 2->118 120 Multi AV Scanner detection for submitted file 2->120 122 Connects to many ports of the same IP (likely port scanning) 2->122 11 arm7.kok.elf 2->11         started        14 dash rm 2->14         started        16 dash rm 2->16         started        signatures3 process4 signatures5 134 Sample tries to kill multiple processes (SIGKILL) 11->134 136 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->136 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 124 Sample tries to set files in /etc globally writable 18->124 126 Sample tries to persist itself using /etc/profile 18->126 128 Drops files in suspicious directories 18->128 130 4 other signatures 18->130 22 arm7.kok.elf sh 18->22         started        24 arm7.kok.elf sh 18->24         started        26 arm7.kok.elf sh 18->26         started        28 111 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        138 Sample tries to kill a massive number of system processes 28->138 140 Sample tries to kill multiple processes (SIGKILL) 28->140 41 sh cp 28->41         started        43 sh cp 28->43         started        45 sh cp 28->45         started        47 94 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.x0TPlv, 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        70 117 other processes 49->70 132 Executes the "crontab" command typically for achieving persistence 51->132 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/32a28b0a2b16b3f4d89f1931ee19a6726c967b9da88e8da04548dd90b900e1cd
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/32a28b0a2b16b3f4d89f1931ee19a6726c967b9da88e8da04548dd90b900e1cd/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/32a28b0a2b16b3f4d89f1931ee19a6726c967b9da88e8da04548dd90b900e1cd
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-11 16:58:10 UTC
File Type:
ELF32 Little (Exe)
AV detection:
19 of 37 (51.35%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gkriwcrlc2z7jwe7dey64gngojwjm645vchi3icfjdozboia4hgq._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/260111-xn2b9ac19a/
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
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/661e6079-728f-45ed-adac-ce1a5847a377
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/32a28b0a2b16b3f4d89f1931ee19a6726c967b9da88e8da04548dd90b900e1cd

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 32a28b0a2b16b3f4d89f1931ee19a6726c967b9da88e8da04548dd90b900e1cd

(this sample)

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

Comments