MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5537f0345c0d67d98c28609e1f8ea4f4e81460bdf7c96c1e62a81d457518489e. 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: 8


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5537f0345c0d67d98c28609e1f8ea4f4e81460bdf7c96c1e62a81d457518489e
SHA3-384 hash: 215fef6213f5ea87afce04e69f47b428310e4abba64fd2672e4e3f8239bbd61ffd2438ec0e0e28cd053d890cbfba155e
SHA1 hash: 154c21fc58ebcae30b225bb8d08b6808c907823b
MD5 hash: c51cd4a1e34f08bc2f21ba6fc2e45226
humanhash: floor-nine-july-cold
File name:flutter.x86_64
Download: download sample
Signature Mirai
Create hunting rule
File size:92'868 bytes
First seen:2026-08-17 05:41:53 UTC
Last seen:2026-08-17 23:55:44 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:H7Xu1rLJ1iXzlSVQkvciC2qQGN/ygk/x94UBE6Q6Kmz89QuIzT1783laQrYKoJ:TuL1iXRSurkOLk/xeUBvQ6KmouXzTZ8a
TLSH T1F593024BCB010C5EC08B5BBB590C7ABA9C5C78168954D9A1C934BA8B3A97FDE00F075F
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 UPX
File size (compressed) :92'868 bytes
File size (de-compressed) :181'568 bytes
Format:linux/amd64
Unpacked file: a89e8aa2d71afb1141d4d744841fdd37ecc2d61e29e545b9102ffbc234619a61

Intelligence

File Origin
# of uploads :
2
# of downloads :
82
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/f02e59ea-93fd-4ec4-9790-3da46c47ac95/
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
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a829f5a2a955edf6d06b3ba/reports/3a448937-33e0-490d-b140-8d52d1002137/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-08-14T20:40:00Z UTC
Last seen:
2026-08-14T21:14:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/5537f0345c0d67d98c28609e1f8ea4f4e81460bdf7c96c1e62a81d457518489e/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/6f3eb512-143d-4cda-8d95-ee616ec3c1a7
Behavior Graph:
Download SVG
%3 guuid=c58eaf7a-1e00-0000-6f06-d39a80080000 pid=2176 /usr/bin/sudo guuid=be82607d-1e00-0000-6f06-d39a85080000 pid=2181 /tmp/sample.bin mprotect-exec net write-file guuid=c58eaf7a-1e00-0000-6f06-d39a80080000 pid=2176->guuid=be82607d-1e00-0000-6f06-d39a85080000 pid=2181 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=be82607d-1e00-0000-6f06-d39a85080000 pid=2181->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=2b20de7d-1e00-0000-6f06-d39a88080000 pid=2184 /tmp/sample.bin zombie guuid=be82607d-1e00-0000-6f06-d39a85080000 pid=2181->guuid=2b20de7d-1e00-0000-6f06-d39a88080000 pid=2184 clone guuid=860eeb7d-1e00-0000-6f06-d39a89080000 pid=2185 /tmp/sample.bin net send-data write-config write-file guuid=2b20de7d-1e00-0000-6f06-d39a88080000 pid=2184->guuid=860eeb7d-1e00-0000-6f06-d39a89080000 pid=2185 clone guuid=860eeb7d-1e00-0000-6f06-d39a89080000 pid=2185->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 36B 236259b2-dc6a-5719-883a-675ad834e4e1 91.92.42.242:6767 guuid=860eeb7d-1e00-0000-6f06-d39a89080000 pid=2185->236259b2-dc6a-5719-883a-675ad834e4e1 send: 610B guuid=8bf9f97d-1e00-0000-6f06-d39a8a080000 pid=2186 /tmp/sample.bin guuid=860eeb7d-1e00-0000-6f06-d39a89080000 pid=2185->guuid=8bf9f97d-1e00-0000-6f06-d39a8a080000 pid=2186 clone guuid=1383ff7d-1e00-0000-6f06-d39a8b080000 pid=2187 /tmp/sample.bin guuid=860eeb7d-1e00-0000-6f06-d39a89080000 pid=2185->guuid=1383ff7d-1e00-0000-6f06-d39a8b080000 pid=2187 clone guuid=7adf2a7e-1e00-0000-6f06-d39a8d080000 pid=2189 /usr/bin/systemctl guuid=860eeb7d-1e00-0000-6f06-d39a89080000 pid=2185->guuid=7adf2a7e-1e00-0000-6f06-d39a8d080000 pid=2189 execve guuid=0076e0f5-1e00-0000-6f06-d39a7e090000 pid=2430 /usr/bin/systemctl guuid=860eeb7d-1e00-0000-6f06-d39a89080000 pid=2185->guuid=0076e0f5-1e00-0000-6f06-d39a7e090000 pid=2430 execve guuid=36f7257e-1e00-0000-6f06-d39a8c080000 pid=2188 /tmp/sample.bin guuid=1383ff7d-1e00-0000-6f06-d39a8b080000 pid=2187->guuid=36f7257e-1e00-0000-6f06-d39a8c080000 pid=2188 clone
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/1c86ea51-a0dc-42f6-940a-d1e378714c9a
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1958803
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1958803 Sample: flutter.x86_64.elf Startdate: 17/08/2026 Architecture: LINUX Score: 60 38 vps.atlas101.us.kg 91.92.42.242, 58076, 6767 TODYL-CLOUD-TodylIncUS Netherlands 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 Sample is packed with UPX 2->42 10 flutter.x86_64.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.x86_64.elf 10->16         started        process6 18 flutter.x86_64.elf 16->18         started        file7 32 /usr/local/bin/network-dispatch, ELF 18->32 dropped 34 /etc/rc.local, ASCII 18->34 dropped 36 /etc/cron.d/flutter, ASCII 18->36 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.x86_64.elf 18->22         started        24 flutter.x86_64.elf systemctl 18->24         started        26 flutter.x86_64.elf systemctl 18->26         started        28 flutter.x86_64.elf 18->28         started        signatures8 process9 process10 30 flutter.x86_64.elf 22->30         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/5537f0345c0d67d98c28609e1f8ea4f4e81460bdf7c96c1e62a81d457518489e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5537f0345c0d67d98c28609e1f8ea4f4e81460bdf7c96c1e62a81d457518489e/
Threat name:
Linux.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-08-15 04:40:56 UTC
File Type:
ELF64 Little (Exe)
AV detection:
14 of 36 (38.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ku37anc4bvt5tdbimcpb7dve6tubiyf567ewyhtcvaouk5iyjcpa._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution linux persistence privilege_escalation upx
Link:
https://tria.ge/reports/260817-gehksaep3v/
Behaviour
Reads runtime system information
Changes its process name
Reads system network configuration
UPX packed file
Enumerates running processes
Modifies rc script
Modifies systemd
Write file to user bin folder
Creates/modifies Cron job
Enumerates active TCP sockets
Modifies Watchdog functionality
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/5537f0345c0d67d98c28609e1f8ea4f4e81460bdf7c96c1e62a81d457518489e

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:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
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:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
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 5537f0345c0d67d98c28609e1f8ea4f4e81460bdf7c96c1e62a81d457518489e

(this sample)

Mirai

elf a89e8aa2d71afb1141d4d744841fdd37ecc2d61e29e545b9102ffbc234619a61

  
URLhaus
https://urlhaus.abuse.ch/url/3904705/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3904721/
  
Dropping
SHA256 a89e8aa2d71afb1141d4d744841fdd37ecc2d61e29e545b9102ffbc234619a61
  
Dropping
MD5 8c4d2da585cea9969fbd1921e262ad37

Comments