MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5cbb864e47553849b5d12fe152228abd9aa9228c0e90b409d68e0e8370a6ce40. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5cbb864e47553849b5d12fe152228abd9aa9228c0e90b409d68e0e8370a6ce40
SHA3-384 hash: c2c7218f9f2f813c54cf43388c8d2710138ac87b368de42bbae994f62466addb14aa1ebd9fd9af4e0bcb83aa6ff4161a
SHA1 hash: 9bf031fd7d4ddfef51ed85da83c8c2517073e439
MD5 hash: 31d9ad24fd1130125c4cb5aae081b8cc
humanhash: four-victor-sad-mississippi
File name:Polar.arm
Download: download sample
Signature Mirai
Create hunting rule
File size:66'124 bytes
First seen:2025-11-18 21:51:31 UTC
Last seen:2025-11-19 01:59:15 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:pBS0Fs81bJ8c6qw2P6KjTDD0Dif3hx8tKgFuLZ8KLxz1i:pB3TVJN6h2fH0Dif7aKLxBi
TLSH T1E2530151BE962C80D3A17BB88530DA81491E986C94FD305E6DD0C8D5BF92A4670BEFCD
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 UPX
File size (compressed) :66'124 bytes
File size (de-compressed) :175'840 bytes
Format:linux/arm
Unpacked file: 468c8dd8e9bbff8a33cbd83d4aeab503f7e59181c0fd173a2021af56c47659cc

Intelligence

File Origin
# of uploads :
2
# of downloads :
64
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Linux.Mirai-18.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade mirai obfuscated packed upx
Link:
https://www.filescan.io/uploads/691cea93e68d9822a37c5ceb/reports/24469e42-79f2-40de-b542-9b353c92426a/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
48
Number of processes launched:
5
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/5cbb864e47553849b5d12fe152228abd9aa9228c0e90b409d68e0e8370a6ce40
Behaviour
Information Gathering
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/bdf9ab6d-05aa-416a-b3eb-9a339d3ca0fc
Behavior Graph:
Download SVG
%3 guuid=8e70c1a4-1b00-0000-380c-1913830c0000 pid=3203 /usr/bin/sudo guuid=b83c92a6-1b00-0000-380c-1913870c0000 pid=3207 /tmp/sample.bin guuid=8e70c1a4-1b00-0000-380c-1913830c0000 pid=3203->guuid=b83c92a6-1b00-0000-380c-1913870c0000 pid=3207 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ea453637-ab55-4ab8-b42d-046b3111f107
Result
Threat name:
Gafgyt
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1816538
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Sends malformed DNS queries
Uses dynamic DNS services
Yara detected Gafgyt
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1816538 Sample: Polar.arm.elf Startdate: 18/11/2025 Architecture: LINUX Score: 76 26 lolzzmortex.duckdns.org. [malformed] 2->26 28 65.222.202.53, 80 CAPEREGIONALHEALTHSYSTEMUS United States 2->28 30 34.243.160.129, 443 AMAZON-02US United States 2->30 32 Malicious sample detected (through community Yara rule) 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 Yara detected Gafgyt 2->36 38 Sample is packed with UPX 2->38 8 Polar.arm.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        14 python3.8 dpkg 2->14         started        signatures3 40 Sends malformed DNS queries 26->40 42 Uses dynamic DNS services 26->42 process4 process5 16 Polar.arm.elf 8->16         started        18 Polar.arm.elf 8->18         started        20 Polar.arm.elf 8->20         started        process6 22 Polar.arm.elf 16->22         started        24 Polar.arm.elf 16->24         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/5cbb864e47553849b5d12fe152228abd9aa9228c0e90b409d68e0e8370a6ce40
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5cbb864e47553849b5d12fe152228abd9aa9228c0e90b409d68e0e8370a6ce40/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-18 21:52:23 UTC
File Type:
ELF32 Little (Exe)
AV detection:
12 of 36 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ls5ymtshku4etnorf7qveiukxwnksiumb2ilicowryhig4fgzzaa._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
upx
Link:
https://tria.ge/reports/251118-1q7tlavkdq/
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/bfff3111-a6b9-4fce-91b2-3311592e4356
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/5cbb864e47553849b5d12fe152228abd9aa9228c0e90b409d68e0e8370a6ce40

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: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 5cbb864e47553849b5d12fe152228abd9aa9228c0e90b409d68e0e8370a6ce40

(this sample)

Mirai

elf 468c8dd8e9bbff8a33cbd83d4aeab503f7e59181c0fd173a2021af56c47659cc

  
URLhaus
https://urlhaus.abuse.ch/url/3711540/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 468c8dd8e9bbff8a33cbd83d4aeab503f7e59181c0fd173a2021af56c47659cc
  
Dropping
MD5 928cfc0960b1714fc83025ae78c558ab
  
URLhaus
https://urlhaus.abuse.ch/url/3711501/

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