MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f4bfcc12f452b7af647c24999159adf3e87aa19c692dd33c8194a92af14cfdd. 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: 6


Intelligence 6 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8f4bfcc12f452b7af647c24999159adf3e87aa19c692dd33c8194a92af14cfdd
SHA3-384 hash: d5b7b1711472c476e7d528ee8c6214b988677dfc163bc1294fea839fdfefccde73f144d960413b2b21ab44e2abf54847
SHA1 hash: ef8d61631f1e9d89e1e13650fedd1f362c14ca96
MD5 hash: e3b403e6a14a05465b141d207234ee11
humanhash: seven-whiskey-pizza-nuts
File name:Polar.spc
Download: download sample
Signature Mirai
Create hunting rule
File size:35'592 bytes
First seen:2026-03-26 00:17:32 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 768:BBOWqg6CkDgjdhJc7gRUhbZz9MUxxsH4TwMIZnIX:BBOw6CkDgjjJc7bLx/
TLSH T18EF2F9A2B7B96B27C0E0633951F2671335AA2BD404B0C34FBC540D6E6FD2390A567AF0
telfhash t15df0c094ad7943a448c18e38ac9d0353c403f13910529b28ff04d9d444bf008f32dd2f
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Trojan.Mirai-7100807-0
Create hunting rule

Unix.Dropper.Mirai-7135897-0
Create hunting rule

Unix.Dropper.Mirai-7135901-0
Create hunting rule

Unix.Dropper.Mirai-7135909-0
Create hunting rule

Unix.Trojan.Mirai-7135916-0
Create hunting rule

Unix.Dropper.Mirai-7135918-0
Create hunting rule

Unix.Dropper.Mirai-7135954-0
Create hunting rule

Unix.Dropper.Mirai-7136016-0
Create hunting rule

Unix.Dropper.Mirai-7136028-0
Create hunting rule

Unix.Trojan.Mirai-8025795-0
Create hunting rule

Unix.Trojan.Mirai-10059006-0
Create hunting rule

Unix.Trojan.Mirai-10059216-0
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gafgyt masquerade mirai obfuscated
Link:
https://www.filescan.io/uploads/69c47b482346b9da57a70827/reports/52ec77bf-5e45-4021-ab8f-75063cd994bd/overview
Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/95cc2428-ce27-4deb-b9ba-bf0cace557ae
Behavior Graph:
Download SVG
%3 guuid=f99efce7-1600-0000-afc6-7fcaa40d0000 pid=3492 /usr/bin/sudo guuid=5e8399e9-1600-0000-afc6-7fcaaa0d0000 pid=3498 /tmp/sample.bin guuid=f99efce7-1600-0000-afc6-7fcaa40d0000 pid=3492->guuid=5e8399e9-1600-0000-afc6-7fcaaa0d0000 pid=3498 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/42a7ef85-0665-4803-a366-434dd090a27e
Result
Threat name:
Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.mine
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1889240
Signature
Antivirus / Scanner detection for submitted sample
Contains symbols with names commonly found in malware
Found strings related to Crypto-Mining
Multi AV Scanner detection for submitted file
Yara detected Mirai
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1889240 Sample: Polar.spc.elf Startdate: 26/03/2026 Architecture: LINUX Score: 80 15 169.254.169.254, 80 USDOSUS Reserved 2->15 17 109.202.202.202, 80 INIT7CH Switzerland 2->17 19 3 other IPs or domains 2->19 21 Antivirus / Scanner detection for submitted sample 2->21 23 Multi AV Scanner detection for submitted file 2->23 25 Yara detected Mirai 2->25 27 2 other signatures 2->27 6 Polar.spc.elf 2->6         started        9 dash rm 2->9         started        11 dash rm 2->11         started        13 python3.8 dpkg 2->13         started        signatures3 process4 signatures5 29 Found strings related to Crypto-Mining 6->29
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/8f4bfcc12f452b7af647c24999159adf3e87aa19c692dd33c8194a92af14cfdd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8f4bfcc12f452b7af647c24999159adf3e87aa19c692dd33c8194a92af14cfdd/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-03-26 00:18:20 UTC
File Type:
ELF32 Big (Exe)
AV detection:
13 of 36 (36.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r5f7zqjpiuvxv5shyjezsfm2347ipkqzy2jn2m6idffjflyuz7oq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260326-alrcyadw4q/
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/8f4bfcc12f452b7af647c24999159adf3e87aa19c692dd33c8194a92af14cfdd

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:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SUSP_XORed_Mozilla_Oct19
Create hunting rule
Author:Florian Roth
Description:Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()
Rule name:SUSP_XORed_Mozilla_RID2DB4
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
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: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 8f4bfcc12f452b7af647c24999159adf3e87aa19c692dd33c8194a92af14cfdd

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3711462/
  
Delivery method
Distributed via web download

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