MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f2575b719ce6289ea9853283ea798dfa3fda8dd79481a3ea9e234a37028cf99. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3f2575b719ce6289ea9853283ea798dfa3fda8dd79481a3ea9e234a37028cf99
SHA3-384 hash: ef4a039192a20fb4438fb06a894f2ca722dd97f763c826ec2bc2bb8b599ca2308014398882dc4410a73761b0f068cdef
SHA1 hash: db4d5bd34b911cb62bab58eb2afc0ad8b3f23129
MD5 hash: b9a79d413314c45d891a8afd80b48829
humanhash: two-sweet-emma-spring
File name:mips.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:131'320 bytes
First seen:2026-01-03 18:32:33 UTC
Last seen:2026-01-04 12:59:30 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:e5hVGpM8mKTnhvLwRvG1qAgCBJJJjfxBRxBQuibDisaZFK9jqcDeTkGFebiKS:eDJ8PjhvLwRvG1qAgCBl7zZFK92cqenS
TLSH T1EFD3C55E6E314F6DF7A8C33447B38F319758278636E1C685E2ACD5052E6038D186FBA8
telfhash t1b22192584a7463e49b765c5a1bddef73e5a130df4b217d338e10e9ada6bc9424d00c1c
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
52
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

Unix.Trojan.Mirai-10017641-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Deleting a recently created file
Sends data to a server
Launching a process
Sets a written file as executable
Changes the time when the file was created, accessed, or modified
Deletes a file
Opens a port
Receives data from a server
Creating a file
Runs as daemon
Connection attempt
Changes access rights for a written file
Creating a process from a recently created file
Kills processes
Writes files to system directory
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Creates or modifies files to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-01-03T15:39:00Z UTC
Last seen:
2026-01-04T01:46:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/3f2575b719ce6289ea9853283ea798dfa3fda8dd79481a3ea9e234a37028cf99/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/54e9d84e-6c9f-4a93-accc-22fa97579130
Behavior Graph:
Download SVG
%3 guuid=9c4a161b-1a00-0000-7304-2cbdc60a0000 pid=2758 /usr/bin/sudo guuid=43f0171f-1a00-0000-7304-2cbdcd0a0000 pid=2765 /tmp/sample.bin guuid=9c4a161b-1a00-0000-7304-2cbdc60a0000 pid=2758->guuid=43f0171f-1a00-0000-7304-2cbdcd0a0000 pid=2765 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/f33052a9-ae01-4f9a-8af5-d0861cbdba3c
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1844267
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: 1844267 Sample: mips.kok.elf Startdate: 03/01/2026 Architecture: LINUX Score: 100 96 45.11.18.203, 10041, 10354, 10576 COMBAHTONcombahtonGmbHDE Germany 2->96 98 91.92.241.12, 55756, 6969 THEZONEBG Bulgaria 2->98 100 17 other IPs or domains 2->100 102 Suricata IDS alerts for network traffic 2->102 104 Multi AV Scanner detection for submitted file 2->104 106 Connects to many ports of the same IP (likely port scanning) 2->106 11 mips.kok.elf 2->11         started        signatures3 process4 signatures5 128 Sample tries to kill multiple processes (SIGKILL) 11->128 130 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->130 14 mips.kok.elf 11->14         started        process6 file7 88 /var/spool/cron/root, ASCII 14->88 dropped 90 /var/spool/cron/crontabs/root, ASCII 14->90 dropped 92 /root/.bashrc, ASCII 14->92 dropped 94 11 other files (10 malicious) 14->94 dropped 132 Sample tries to set files in /etc globally writable 14->132 134 Sample tries to persist itself using /etc/profile 14->134 136 Drops files in suspicious directories 14->136 138 4 other signatures 14->138 18 mips.kok.elf sh 14->18         started        20 mips.kok.elf sh 14->20         started        22 mips.kok.elf sh 14->22         started        24 75 other processes 14->24 signatures8 process9 signatures10 27 sh S99backup0 18->27         started        29 sh S99backup1 20->29         started        31 sh S99backup2 22->31         started        124 Sample tries to kill a massive number of system processes 24->124 126 Sample tries to kill multiple processes (SIGKILL) 24->126 33 sh S99network 24->33         started        35 sh cp 24->35         started        39 sh crontab 24->39         started        41 59 other processes 24->41 process11 file12 43 S99backup0 27->43         started        45 S99backup1 29->45         started        47 S99backup2 31->47         started        49 S99network 33->49         started        78 /usr/bin/.update, ELF 35->78 dropped 110 Writes identical ELF files to multiple locations 35->110 112 Drops invisible ELF files 35->112 114 Drops files in suspicious directories 35->114 80 /var/spool/cron/crontabs/tmp.Ovb5C5, ASCII 39->80 dropped 116 Sample tries to persist itself using cron 39->116 118 Executes the "crontab" command typically for achieving persistence 39->118 82 /var/log/.update, ELF 41->82 dropped 84 /var/jbx/shared/.update, ELF 41->84 dropped 86 /boot/.update, ELF 41->86 dropped 120 Sample deletes itself 41->120 122 Terminates several processes with shell command 'killall' 41->122 51 sh crontab 41->51         started        54 .monitor 41->54         started        56 sh .update 41->56         started        58 sh .update 41->58         started        signatures13 process14 signatures15 60 S99backup0 .update 43->60         started        68 93 other processes 43->68 62 S99backup1 .update 45->62         started        70 91 other processes 45->70 64 S99backup2 .update 47->64         started        72 83 other processes 47->72 66 S99network .update 49->66         started        74 79 other processes 49->74 108 Executes the "crontab" command typically for achieving persistence 51->108 76 2 other processes 54->76 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/3f2575b719ce6289ea9853283ea798dfa3fda8dd79481a3ea9e234a37028cf99
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3f2575b719ce6289ea9853283ea798dfa3fda8dd79481a3ea9e234a37028cf99/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/3f2575b719ce6289ea9853283ea798dfa3fda8dd79481a3ea9e234a37028cf99
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-03 19:21:28 UTC
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h4sxlnyzzzrit2uykmud5j4y36r73kg5pfebupvj4i2kg4biz6mq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/260103-w64pnatphs/
Behaviour
Reads runtime system information
System Network Configuration Discovery
Writes file to shm directory
Changes its process name
Modifies Bash startup script
Creates a large amount of network flows
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
Contacts a large (5648) amount of remote hosts
Mirai
Mirai family
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/25bdd979-017a-40e6-860c-43f013e050d2
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/3f2575b719ce6289ea9853283ea798dfa3fda8dd79481a3ea9e234a37028cf99

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: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 3f2575b719ce6289ea9853283ea798dfa3fda8dd79481a3ea9e234a37028cf99

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3749714/
  
Delivery method
Distributed via web download

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