MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21fb6adbb5cd5708c4f3f1ade78ae08b7754e31f2952386fe1f5fabd53be458a. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21fb6adbb5cd5708c4f3f1ade78ae08b7754e31f2952386fe1f5fabd53be458a
SHA3-384 hash: 34ae646cd3beae774335d183dda34d6622569dfa64bfa4d43026a05d575559d4b1f1cfad34bc699948333da37c9a095b
SHA1 hash: a07382f090db9360b6c611372066312acf7f8c35
MD5 hash: 38b733a243a2f21c22c1b0a2569b3d26
humanhash: four-july-whiskey-kilo
File name:Space.arm5
Download: download sample
Signature Mirai
Create hunting rule
File size:20'540 bytes
First seen:2026-08-18 05:37:31 UTC
Last seen:2026-08-18 11:52:39 UTC
File type: elf
MIME type:application/x-executable
ssdeep 384:kn3CFDMsFGg7EMUTmli2KvZw93KmQxPitrsnIns0t2dfNH89nFzc7hymdGUop5hl:KCyEPgoKRwZGx04nIns0t2gc7s3UozL3
TLSH T1BB92C0700136B8F2C7613833DA2F8906991603FECAF5327B275854A4DB9554F2EF558E
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) :20'540 bytes
File size (de-compressed) :42'788 bytes
Format:linux/arm
Unpacked file: a8e57e07b9dc530b5593f00c7f4006fec1b3986d94438e386ec87ae7e5fbf6a7

Intelligence

File Origin
# of uploads :
2
# of downloads :
57
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/e2304729-fd49-48dc-a7c9-a5c686636bb8/
Detection(s):
SecuriteInfo.com.Linux.Mirai-18.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-8274771-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade mirai packed upx
Link:
https://www.filescan.io/uploads/6a83efd94849fba0a5bef447/reports/079da006-b46b-4f9b-8248-332831f95b35/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
0
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/21fb6adbb5cd5708c4f3f1ade78ae08b7754e31f2952386fe1f5fabd53be458a
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/b080a10e-a463-4e77-bc81-fe6dfb688c3e
Behavior Graph:
Download SVG
%3 guuid=e05d2feb-1e00-0000-3423-f7f016090000 pid=2326 /usr/bin/sudo guuid=e95e4bee-1e00-0000-3423-f7f01b090000 pid=2331 /tmp/sample.bin guuid=e05d2feb-1e00-0000-3423-f7f016090000 pid=2326->guuid=e95e4bee-1e00-0000-3423-f7f01b090000 pid=2331 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0fe5ef67-f246-4e47-b311-e52ddb7461ea
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1959454
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/21fb6adbb5cd5708c4f3f1ade78ae08b7754e31f2952386fe1f5fabd53be458a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/21fb6adbb5cd5708c4f3f1ade78ae08b7754e31f2952386fe1f5fabd53be458a/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eh5wvw5vzvlqrrht6gw6pcxarn3vjyy7ffjdq37b6x5l2u56iwfa._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
upx
Link:
https://tria.ge/reports/260818-gbnydsfe84/
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/21fb6adbb5cd5708c4f3f1ade78ae08b7754e31f2952386fe1f5fabd53be458a

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: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 21fb6adbb5cd5708c4f3f1ade78ae08b7754e31f2952386fe1f5fabd53be458a

(this sample)

Mirai

elf a8e57e07b9dc530b5593f00c7f4006fec1b3986d94438e386ec87ae7e5fbf6a7

  
URLhaus
https://urlhaus.abuse.ch/url/3905106/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 a8e57e07b9dc530b5593f00c7f4006fec1b3986d94438e386ec87ae7e5fbf6a7
  
Dropping
MD5 1bf825478baeaaeb608a4ccd6c991865

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