MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 78e260a5118578e0b4d1a55374c217c218c48ab8f7455dd5a28a70746f99f715. 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: 13


Intelligence 13 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 78e260a5118578e0b4d1a55374c217c218c48ab8f7455dd5a28a70746f99f715
SHA3-384 hash: 21175045575cb1af703467abfa98707899dac43b8f86cdbced555f207c1c39e0c3c0479164685a58e07c850041ed8e09
SHA1 hash: 22ddc80334318474ed3238ef2d997bfe9ff0955c
MD5 hash: 0b7361d89981dd2fc528a089b8563377
humanhash: georgia-virginia-steak-east
File name:x86_64.kokz
Download: download sample
Signature Mirai
Create hunting rule
File size:97'904 bytes
First seen:2026-01-11 02:25:37 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:t98CLqekZEuHb3K4kkCdkDjDT7qOQb/1uDwgkQS0pZNAs6e11T:t98NewEuDHkkoQfT7qH/1uDtTpZNDHT
TLSH T180A36D42BAC0D8FCC46AC378435EA2B6D861F41D1231366B5BC0FE167D8ED113B2E692
telfhash t16431c4342dea299421eb5738b307e1e1d4611e1119f1b6e59d37a8e3cf157940c970e3
TrID 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12)
49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
64
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-10017351-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Changes access rights for a written file
Attempts to kill processes by name
Connection attempt
Runs as daemon
Kills processes
Opens a port
Launching a process
Sends data to a server
Creating a process from a recently created file
Creating a file
Deleting a recently created file
Deletes a file
Changes the time when the file was created, accessed, or modified
Receives data from a server
Sets a written file as executable
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Writes files to system directory
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files to set up autorun
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
gafgyt masquerade mirai
Link:
https://www.filescan.io/uploads/69630a4d30368802bb7fb0a4/reports/cbc01742-6654-4b6d-b474-0a025821bf37/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-01-10T19:20:00Z UTC
Last seen:
2026-01-12T10:01:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/78e260a5118578e0b4d1a55374c217c218c48ab8f7455dd5a28a70746f99f715/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9b1a58be-1083-423d-bf5c-8dab294ef2c2
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1848157
Signature
Drops files in suspicious directories
Drops invisible ELF files
Executes the "crontab" command typically for achieving persistence
Malicious sample detected (through community Yara rule)
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 signatures2 2 Behavior Graph ID: 1848157 Sample: x86_64.kokz.elf Startdate: 11/01/2026 Architecture: LINUX Score: 100 119 Malicious sample detected (through community Yara rule) 2->119 121 Multi AV Scanner detection for submitted file 2->121 10 x86_64.kokz.elf 2->10         started        13 dash rm 2->13         started        15 dash rm 2->15         started        process3 signatures4 133 Sample tries to kill multiple processes (SIGKILL) 10->133 135 Sample reads /proc/mounts (often used for finding a writable filesystem) 10->135 17 x86_64.kokz.elf 10->17         started        process5 file6 95 /var/spool/cron/root, ASCII 17->95 dropped 97 /var/spool/cron/crontabs/root, ASCII 17->97 dropped 99 /root/.bashrc, ASCII 17->99 dropped 101 11 other files (10 malicious) 17->101 dropped 123 Sample tries to set files in /etc globally writable 17->123 125 Sample tries to persist itself using /etc/profile 17->125 127 Drops files in suspicious directories 17->127 129 4 other signatures 17->129 21 x86_64.kokz.elf sh 17->21         started        23 x86_64.kokz.elf sh 17->23         started        25 x86_64.kokz.elf sh 17->25         started        27 107 other processes 17->27 signatures7 process8 signatures9 30 sh .monitor 21->30         started        32 sh cp 23->32         started        36 sh crontab 25->36         started        38 sh 25->38         started        137 Sample tries to kill multiple processes (SIGKILL) 27->137 40 sh S99backup0 27->40         started        42 sh S99backup1 27->42         started        44 sh S99backup2 27->44         started        46 105 other processes 27->46 process10 file11 48 .monitor 30->48         started        85 /usr/bin/.update, ELF 32->85 dropped 103 Writes identical ELF files to multiple locations 32->103 105 Drops invisible ELF files 32->105 107 Drops files in suspicious directories 32->107 87 /var/spool/cron/crontabs/tmp.FR2kdN, ASCII 36->87 dropped 109 Sample tries to persist itself using cron 36->109 111 Executes the "crontab" command typically for achieving persistence 36->111 50 sh crontab 38->50         started        53 S99backup0 40->53         started        55 S99backup1 42->55         started        57 S99backup2 44->57         started        89 /var/log/.update, ELF 46->89 dropped 91 /var/jbx/shared/.update, ELF 46->91 dropped 93 /boot/.update, ELF 46->93 dropped 113 Sample tries to kill multiple processes (SIGKILL) 46->113 115 Sample deletes itself 46->115 117 Terminates several processes with shell command 'killall' 46->117 59 S99network 46->59         started        61 sh .update 46->61         started        63 sh .update 46->63         started        65 sh .update 46->65         started        signatures12 process13 signatures14 75 72 other processes 48->75 131 Executes the "crontab" command typically for achieving persistence 50->131 67 S99backup0 .update 53->67         started        77 23 other processes 53->77 69 S99backup1 .update 55->69         started        79 23 other processes 55->79 71 S99backup2 .update 57->71         started        81 23 other processes 57->81 73 S99network .update 59->73         started        83 23 other processes 59->83 process15
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/78e260a5118578e0b4d1a55374c217c218c48ab8f7455dd5a28a70746f99f715
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/78e260a5118578e0b4d1a55374c217c218c48ab8f7455dd5a28a70746f99f715/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/78e260a5118578e0b4d1a55374c217c218c48ab8f7455dd5a28a70746f99f715
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-11 00:56:30 UTC
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pdrgbjirqv4obngruvjxjqqxyimmjcvy65cv3vncrjyhi34z64kq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion discovery execution linux persistence privilege_escalation
Link:
https://tria.ge/reports/260111-cwz4yady6f/
Behaviour
Writes file to shm directory
Reads runtime system information
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
Contacts a large (2977) amount of remote hosts
Creates a large amount of network flows
Mirai
Mirai family
Verdict:
Malicious
Tags:
trojan gafgyt mirai Unix.Trojan.Mirai-7640640-0
YARA:
Linux_Trojan_Gafgyt_9e9530a7 Linux_Trojan_Gafgyt_807911a2 Linux_Trojan_Gafgyt_d4227dbf Linux_Trojan_Gafgyt_d996d335 Linux_Trojan_Gafgyt_620087b9 Linux_Trojan_Gafgyt_33b4111a Linux_Trojan_Mirai_6a77af0f Linux_Trojan_Mirai_e0cf29e2
Link:
https://app.threat.zone/submission/c0d8e172-9335-4c81-a271-2dce23aef810
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.64
Link:
https://yomi.yoroi.company/submissions/78e260a5118578e0b4d1a55374c217c218c48ab8f7455dd5a28a70746f99f715

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: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_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:linux_generic_irc_catcher
Create hunting rule
Author:@_lubiedo
Description:Find new ELF IRC samples
Rule name:Linux_Trojan_Gafgyt_33b4111a
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_620087b9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_807911a2
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_9e9530a7
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d4227dbf
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d996d335
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_6a77af0f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_e0cf29e2
Create hunting rule
Author:Elastic Security
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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

sh 3bf71df19c91091b29d73a25e61ad421d51e13f1926c222b7b37f26e02c5c68d

Mirai

elf 78e260a5118578e0b4d1a55374c217c218c48ab8f7455dd5a28a70746f99f715

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3749720/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3749718/
  
Dropped by
SHA256 3bf71df19c91091b29d73a25e61ad421d51e13f1926c222b7b37f26e02c5c68d
  
Dropped by
MD5 6afe59ca9594d1189b537ff009ba649c
  
URLhaus
https://urlhaus.abuse.ch/url/3754457/
  
Dropped by
SHA256 0c24349de012b44ecfbf50064f41eae9cf8036ca8ff9e0c58a095abdeb31c6c2
  
Dropped by
MD5 7d2614c881747b43e0696812155c712d

Comments