MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b1f240b7153d4f3e5c6239c00ea341f46e00df99b4e3751d85b341f4a8106b91. 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: 7


Intelligence 7 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b1f240b7153d4f3e5c6239c00ea341f46e00df99b4e3751d85b341f4a8106b91
SHA3-384 hash: fa05384b68c3a524402c2f5f5ea05aa70205f09458b81a6ada9b87bc708605650b314ea7a4853a0f4511d5b44188bdce
SHA1 hash: 14a979a00b4fe1ca99979755e21b999d8455ca1e
MD5 hash: 8426846a294ed3641438f8db5e37abe5
humanhash: victor-three-blossom-september
File name:flutter.mipsel
Download: download sample
Signature Mirai
Create hunting rule
File size:134'764 bytes
First seen:2026-08-19 01:51:26 UTC
Last seen:2026-08-19 14:29:31 UTC
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:+Z5zLDRCZMNMuM247hHglFj/vu0IIPXno/o0wjjLPwl6pao/A+9:+ZdlzKuU7QFj/m076YXTwkI4
TLSH T169D312561F401F68E8177C34ABD34A376E7A2A0BEE438C1395B9F5B264E250CD9C897C
Magika elf
Reporter abuse_ch
Tags:elf mirai UPX
File size (compressed) :134'764 bytes
File size (de-compressed) :262'440 bytes
Format:linux/mipsel
Unpacked file: cb4efe99fbc11befd19e6eb33c1c29b00301429ddfb6864a10130dc7ac3eb5e0

Intelligence

File Origin
# of uploads :
2
# of downloads :
54
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/4182a4d7-1e7d-495c-9a9f-dc8170885751/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Kills processes
Opens a port
Receives data from a server
Sends data to a server
Connection attempt
Manages services
Runs as daemon
DNS request
Changes access rights for a written file
Creating a file
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
Performs a bruteforce attack in the network
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/fadacf4e-e4ac-4625-a641-88d0df9862a6
Behavior Graph:
Download SVG
%3 guuid=fc9ab083-1a00-0000-755d-32279b080000 pid=2203 /usr/bin/sudo guuid=43055688-1a00-0000-755d-32279e080000 pid=2206 /tmp/sample.bin guuid=fc9ab083-1a00-0000-755d-32279b080000 pid=2203->guuid=43055688-1a00-0000-755d-32279e080000 pid=2206 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b697f8f2-dab7-4d9d-99e8-6a19ac4aef87
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1960115
Signature
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1960115 Sample: flutter.mipsel.elf Startdate: 19/08/2026 Architecture: LINUX Score: 68 36 vps.atlas101.us.kg 91.92.42.242, 51906, 6767 TODYL-CLOUD-TodylIncUS Netherlands 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 Yara detected Mirai 2->40 42 Sample is packed with UPX 2->42 10 flutter.mipsel.elf 2->10         started        12 systemd snapd-env-generator 2->12         started        14 systemd snapd-env-generator 2->14         started        signatures3 process4 process5 16 flutter.mipsel.elf 10->16         started        process6 18 flutter.mipsel.elf 16->18         started        file7 32 /etc/rc.local, ASCII 18->32 dropped 34 /etc/cron.d/flutter, ASCII 18->34 dropped 44 Sample tries to persist itself using cron 18->44 46 Sample tries to persist itself using System V runlevels 18->46 22 flutter.mipsel.elf 18->22         started        24 flutter.mipsel.elf systemctl 18->24         started        26 flutter.mipsel.elf systemctl 18->26         started        28 flutter.mipsel.elf 18->28         started        signatures8 process9 process10 30 flutter.mipsel.elf 22->30         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b1f240b7153d4f3e5c6239c00ea341f46e00df99b4e3751d85b341f4a8106b91
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b1f240b7153d4f3e5c6239c00ea341f46e00df99b4e3751d85b341f4a8106b91/
Threat name:
Linux.Trojan.Multiverze
Create hunting rule
Status:
Malicious
First seen:
2026-08-19 01:53:31 UTC
File Type:
ELF32 Little (SO)
AV detection:
9 of 37 (24.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=whzebnyvhvht4xdchhaa5i2b6rxabx4zwtrxkhmfwna7jkaqnoiq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution persistence privilege_escalation upx
Link:
https://tria.ge/reports/260819-b96m7scj7w/
Behaviour
Reads runtime system information
System Network Configuration Discovery
Changes its process name
Reads system network configuration
UPX packed file
Creates/modifies Cron job
Enumerates active TCP sockets
Enumerates running processes
Modifies rc script
Modifies systemd
Write file to user bin folder
Modifies Watchdog functionality
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/b1f240b7153d4f3e5c6239c00ea341f46e00df99b4e3751d85b341f4a8106b91

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_arm_mips_ko_so
Create hunting rule
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf b1f240b7153d4f3e5c6239c00ea341f46e00df99b4e3751d85b341f4a8106b91

(this sample)

Mirai

elf cb4efe99fbc11befd19e6eb33c1c29b00301429ddfb6864a10130dc7ac3eb5e0

  
URLhaus
https://urlhaus.abuse.ch/url/3904706/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 cb4efe99fbc11befd19e6eb33c1c29b00301429ddfb6864a10130dc7ac3eb5e0
  
Dropping
MD5 8770c0083d72b222a0fc4503dddd339b
  
URLhaus
https://urlhaus.abuse.ch/url/3904696/

Comments