MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0a640b8d7602c72f6ba9f00c1e64f6849b38f4aaf1505a94e26db8e47f7fe952. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0a640b8d7602c72f6ba9f00c1e64f6849b38f4aaf1505a94e26db8e47f7fe952
SHA3-384 hash: 7d9b3ae52b6143e93f12e461d48235d827033507d0482a307d6064b7bcdff7d9f2a2e2fe93195c74b2966adee8937c97
SHA1 hash: 140d6a3d3ec3ff8f720a817f62b36612fa68221d
MD5 hash: c30c34ef1ae2be55e2ab878325d73f50
humanhash: lactose-early-montana-item
File name:mips.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:135'632 bytes
First seen:2026-01-05 08:05:27 UTC
Last seen:2026-01-09 02:57:40 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:TyWu+IhvkmAAtbnC0U9sgEUhXvcinyWVCxLDf7JtIxTw:TBd+s4U9vcinHWLDTLIxU
TLSH T196D3C74E7E314F6DF3A8C23447B78B71975873D626E1C685E26CE5052EA034D281FBA8
telfhash t13d21b00c4a7823e497765c892beeff77e5a130de0a226d338e11a9adb5bcd424d00c1c
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
4
# of downloads :
62
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
Deletes a file
Opens a port
Changes the time when the file was created, accessed, or modified
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
Threat level:
  10/10
Confidence:
100%
Tags:
bash gafgyt lolbin masquerade mirai
Link:
https://www.filescan.io/uploads/695b70f7127d6a14e0d06aa9/reports/a75bfc67-3c65-47fb-aed3-4b8ba16a1d3f/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-01-05T04:17:00Z UTC
Last seen:
2026-01-05T08:48:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/0a640b8d7602c72f6ba9f00c1e64f6849b38f4aaf1505a94e26db8e47f7fe952/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/dc6b9b3a-cb43-424b-bdb8-20e20b2fcaa2
Behavior Graph:
Download SVG
%3 guuid=d53b24d0-3500-0000-f288-d81203050000 pid=1283 /usr/bin/sudo guuid=1476c1d1-3500-0000-f288-d81209050000 pid=1289 /tmp/sample.bin guuid=d53b24d0-3500-0000-f288-d81203050000 pid=1283->guuid=1476c1d1-3500-0000-f288-d81209050000 pid=1289 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/cebf520a-af35-42de-b4b6-aee77b6c8cc1
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1844750
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 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: 1844750 Sample: mips.kok.elf Startdate: 05/01/2026 Architecture: LINUX Score: 100 94 91.92.241.12, 50566, 6969 THEZONEBG Bulgaria 2->94 96 91.108.9.97, 32001 TELEGRAMRU United Kingdom 2->96 98 14 other IPs or domains 2->98 100 Multi AV Scanner detection for submitted file 2->100 11 mips.kok.elf 2->11         started        signatures3 process4 signatures5 122 Sample tries to kill multiple processes (SIGKILL) 11->122 124 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->124 14 mips.kok.elf 11->14         started        process6 file7 86 /var/spool/cron/root, ASCII 14->86 dropped 88 /var/spool/cron/crontabs/root, ASCII 14->88 dropped 90 /root/.bashrc, ASCII 14->90 dropped 92 11 other files (10 malicious) 14->92 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 mips.kok.elf sh 14->18         started        20 mips.kok.elf sh 14->20         started        22 mips.kok.elf sh 14->22         started        24 68 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        118 Sample tries to kill a massive number of system processes 24->118 120 Sample tries to kill multiple processes (SIGKILL) 24->120 33 sh S99network 24->33         started        35 sh cp 24->35         started        39 sh crontab 24->39         started        41 58 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        76 /usr/bin/.update, ELF 35->76 dropped 104 Writes identical ELF files to multiple locations 35->104 106 Drops invisible ELF files 35->106 108 Drops files in suspicious directories 35->108 78 /var/spool/cron/crontabs/tmp.Q4DUIE, ASCII 39->78 dropped 110 Sample tries to persist itself using cron 39->110 112 Executes the "crontab" command typically for achieving persistence 39->112 80 /var/log/.update, ELF 41->80 dropped 82 /var/jbx/shared/.update, ELF 41->82 dropped 84 /boot/.update, ELF 41->84 dropped 114 Sample deletes itself 41->114 116 Terminates several processes with shell command 'killall' 41->116 51 sh crontab 41->51         started        54 .monitor 41->54         started        56 sh .update 41->56         started        signatures13 process14 signatures15 58 S99backup0 .update 43->58         started        66 99 other processes 43->66 60 S99backup1 .update 45->60         started        68 97 other processes 45->68 62 S99backup2 .update 47->62         started        70 91 other processes 47->70 64 S99network .update 49->64         started        72 87 other processes 49->72 102 Executes the "crontab" command typically for achieving persistence 51->102 74 2 other processes 54->74 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/0a640b8d7602c72f6ba9f00c1e64f6849b38f4aaf1505a94e26db8e47f7fe952
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/0a640b8d7602c72f6ba9f00c1e64f6849b38f4aaf1505a94e26db8e47f7fe952/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/0a640b8d7602c72f6ba9f00c1e64f6849b38f4aaf1505a94e26db8e47f7fe952
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-05 08:06:17 UTC
File Type:
ELF32 Big (Exe)
AV detection:
9 of 23 (39.13%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=bjsaxdlwalds625j6agb4zhwqsntr5fk6fifvfhcnw4oi7375fja._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/260105-jy32yaynhk/
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
Contacts a large (535) amount of remote hosts
Mirai
Mirai family
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/18bd3758-ef54-42a2-bf0d-6073f74e304e
Please note that we are no longer able to provide a coverage score for Virus Total.

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 0a640b8d7602c72f6ba9f00c1e64f6849b38f4aaf1505a94e26db8e47f7fe952

(this sample)

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

Comments