MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3381967c5dd4d39edfed3e95a2a26467fc93d25986b9dac239d009bb2057cf6. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3381967c5dd4d39edfed3e95a2a26467fc93d25986b9dac239d009bb2057cf6
SHA3-384 hash: 8464f9eb8a905cf36a42038f5ac1e3ba193f3c66c6109d4d3e58a3daa3516b1fb2883e6b38d2be6e7b1fdbfe780c0ffa
SHA1 hash: a623a80e1488bc50defc8384111e0c2aea9575d2
MD5 hash: 97c7930d6a53d34d44224b7722734c36
humanhash: michigan-echo-juliet-blue
File name:mips.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:135'632 bytes
First seen:2026-01-09 19:58:39 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:TyWu+IhvkmAAtbnC0U9sgEUxXvcinyWVCxLDf7Jt5xTw:TBd+s4UNvcinHWLDTL5xU
TLSH T16DD3C74E7E314F6DF3A8C23447B78B71975873D626E1C685E26CE5052EA034D281FBA8
telfhash t13d21b00c4a7823e497765c892beeff77e5a130de0a226d338e11a9adb5bcd424d00c1c
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
75
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:
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
bash lolbin masquerade mirai
Link:
https://www.filescan.io/uploads/69615e2740358be74af8985e/reports/3640d74a-ea52-4ad1-a093-228b4e0259c0/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-01-09T17:47:00Z UTC
Last seen:
2026-01-10T00:21:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a3381967c5dd4d39edfed3e95a2a26467fc93d25986b9dac239d009bb2057cf6/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/88e1b252-4add-4468-a8ae-18b4faf78268
Behavior Graph:
Download SVG
%3 guuid=d0e59a66-1800-0000-05a2-0a21470d0000 pid=3399 /usr/bin/sudo guuid=43064968-1800-0000-05a2-0a214d0d0000 pid=3405 /tmp/sample.bin guuid=d0e59a66-1800-0000-05a2-0a21470d0000 pid=3399->guuid=43064968-1800-0000-05a2-0a214d0d0000 pid=3405 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/86b128bd-d657-4c83-93fc-6bfbd363c0e5
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1847611
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
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: 1847611 Sample: mips.kok.elf Startdate: 09/01/2026 Architecture: LINUX Score: 100 94 46.128.29.58, 21, 22, 23 KMS-DE_ASDE Germany 2->94 96 73.125.192.239, 10152, 10486, 1093 COMCAST-7922US United States 2->96 98 24 other IPs or domains 2->98 100 Multi AV Scanner detection for submitted file 2->100 102 Connects to many ports of the same IP (likely port scanning) 2->102 11 mips.kok.elf 2->11         started        signatures3 process4 signatures5 124 Sample tries to kill multiple processes (SIGKILL) 11->124 126 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->126 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 128 Sample tries to set files in /etc globally writable 14->128 130 Sample tries to persist itself using /etc/profile 14->130 132 Drops files in suspicious directories 14->132 134 4 other signatures 14->134 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 29 other processes 14->24 signatures8 process9 signatures10 27 sh .monitor 18->27         started        29 sh S99backup0 20->29         started        31 sh S99backup1 22->31         started        120 Sample tries to kill a massive number of system processes 24->120 122 Sample tries to kill multiple processes (SIGKILL) 24->122 33 sh S99backup2 24->33         started        35 sh S99network 24->35         started        37 sh cp 24->37         started        41 28 other processes 24->41 process11 file12 43 .monitor 27->43         started        45 S99backup0 29->45         started        47 S99backup1 31->47         started        49 S99backup2 33->49         started        51 S99network 35->51         started        76 /usr/bin/.update, ELF 37->76 dropped 106 Writes identical ELF files to multiple locations 37->106 108 Drops invisible ELF files 37->108 110 Drops files in suspicious directories 37->110 78 /var/spool/cron/crontabs/tmp.jrZTpp, ASCII 41->78 dropped 80 /var/log/.update, ELF 41->80 dropped 82 /var/jbx/shared/.update, ELF 41->82 dropped 84 /boot/.update, ELF 41->84 dropped 112 Sample deletes itself 41->112 114 Sample tries to persist itself using cron 41->114 116 Executes the "crontab" command typically for achieving persistence 41->116 118 Terminates several processes with shell command 'killall' 41->118 53 sh crontab 41->53         started        56 sh .update 41->56         started        signatures13 process14 signatures15 66 232 other processes 43->66 58 S99backup0 .update 45->58         started        68 129 other processes 45->68 60 S99backup1 .update 47->60         started        70 125 other processes 47->70 62 S99backup2 .update 49->62         started        72 121 other processes 49->72 64 S99network .update 51->64         started        74 117 other processes 51->74 104 Executes the "crontab" command typically for achieving persistence 53->104 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a3381967c5dd4d39edfed3e95a2a26467fc93d25986b9dac239d009bb2057cf6
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a3381967c5dd4d39edfed3e95a2a26467fc93d25986b9dac239d009bb2057cf6/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-09 19:59:35 UTC
File Type:
ELF32 Big (Exe)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=um4bsz6f3vgtt3p62puvukrgiz74spjftbvz3lbdtuajxmqfpt3a._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/260109-yqpa5sgw9g/
Behaviour
Reads runtime system information
System Network Configuration Discovery
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
Contacts a large (3996) amount of remote hosts
Creates a large amount of network flows
Mirai
Mirai family
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/651f3949-df1a-42f9-a0b2-ed1e71dbb921
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/a3381967c5dd4d39edfed3e95a2a26467fc93d25986b9dac239d009bb2057cf6

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 a3381967c5dd4d39edfed3e95a2a26467fc93d25986b9dac239d009bb2057cf6

(this sample)

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

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