MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f8bd4cfd5fa1370ffc124aced50648315cabdc9d0f1207e90f62d9f4c36ca41a. 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: 11


Intelligence 11 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f8bd4cfd5fa1370ffc124aced50648315cabdc9d0f1207e90f62d9f4c36ca41a
SHA3-384 hash: 2fc304d877b78cb2d51308b5f46b9c7acfb29b9671b693ba6947c106c7d7553c722f471d735bfe6d76d052499b552dd3
SHA1 hash: 24c2a7b19e68a5f4fd24ceeb45913504171dcb61
MD5 hash: e004048f42c3628cc7f04c0d78236905
humanhash: delta-saturn-finch-fruit
File name:Polar.x86_64
Download: download sample
Signature Mirai
Create hunting rule
File size:182'760 bytes
First seen:2025-11-29 04:06:31 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:7r4la+KuFYCIUWpUa7vq3ANxfVpGosDMxf/o5+g2gATr2bsiz4d:X4YwIU8ZDNS5L223Ud
TLSH T142042906B5CCC0FDC896D1745BEEB136D971BC6E023C715B2788AF222E8BE605B2D654
telfhash t1a551bd342dd27a5821c7870ef30eedb8f9770a211de2b1a6ee27add4dd927840d56063
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-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 65225f0c0c3ab73917183aa13c7fea945b729cc29abe8fd85f2e4ec4b761df8c
File size (compressed) :68'296 bytes
File size (de-compressed) :182'760 bytes
Format:linux/amd64
Packed file: 65225f0c0c3ab73917183aa13c7fea945b729cc29abe8fd85f2e4ec4b761df8c

Intelligence

File Origin
# of uploads :
1
# of downloads :
43
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
Mirai
Details
Mirai
an XOR decryption key and at least a c2 socket address
Link:
https://research.acce.ciphertechsolutions.com/results/ae0818a5-e346-449d-a8be-df123b1bd5de/
Detection(s):
Sanesecurity.Malware.28940.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30435.LC.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Siggen.9999-14.UNOFFICIAL
Create hunting rule

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.Dropper.Mirai-7540662-0
Create hunting rule

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

Unix.Dropper.Mirai-10007027-0
Create hunting rule

Unix.Trojan.Mirai-10009361-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Sends data to a server
Runs as daemon
Opens a port
DNS request
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/692a718a06363f28214fcacd/reports/c6a2ca55-0d6c-4fcf-b946-0bcfc6360969/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2025-11-29T02:30:00Z UTC
Last seen:
2025-11-29T05:09:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/f8bd4cfd5fa1370ffc124aced50648315cabdc9d0f1207e90f62d9f4c36ca41a/results?tab=lookup
Gathering data
Result
Threat name:
Gafgyt
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1822671
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Uses dynamic DNS services
Yara detected Gafgyt
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1822671 Sample: Polar.x86_64.elf Startdate: 29/11/2025 Architecture: LINUX Score: 76 22 lolzzmortex.duckdns.org 2->22 24 169.254.169.254, 80 USDOSUS Reserved 2->24 26 2 other IPs or domains 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Antivirus / Scanner detection for submitted sample 2->30 32 Multi AV Scanner detection for submitted file 2->32 34 Yara detected Gafgyt 2->34 8 Polar.x86_64.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 36 Uses dynamic DNS services 22->36 process4 process5 12 Polar.x86_64.elf 8->12         started        14 Polar.x86_64.elf 8->14         started        16 Polar.x86_64.elf 8->16         started        process6 18 Polar.x86_64.elf 12->18         started        20 Polar.x86_64.elf 12->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/f8bd4cfd5fa1370ffc124aced50648315cabdc9d0f1207e90f62d9f4c36ca41a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f8bd4cfd5fa1370ffc124aced50648315cabdc9d0f1207e90f62d9f4c36ca41a/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-29 04:07:29 UTC
File Type:
ELF64 Little (Exe)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7c6uz7k7ue3q77asjlhnkbsigfokxxe5b4jap2ipmlm7jq3muqna._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery linux
Link:
https://tria.ge/reports/251129-epvxradx8d/
Behaviour
Reads runtime system information
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Malware Config
C2 Extraction:
lolzzmortex.duckdns.org
Verdict:
Malicious
Tags:
trojan gafgyt mirai Unix.Trojan.Mirai-7100807-0
YARA:
Linux_Trojan_Gafgyt_9e9530a7 Linux_Trojan_Gafgyt_807911a2 Linux_Trojan_Gafgyt_ea92cca8 Linux_Trojan_Gafgyt_d4227dbf Linux_Trojan_Gafgyt_d996d335 Linux_Trojan_Gafgyt_d0c57a2e Linux_Trojan_Gafgyt_620087b9 Linux_Trojan_Gafgyt_0cd591cd Linux_Trojan_Gafgyt_33b4111a Linux_Trojan_Gafgyt_a33a8363 Linux_Trojan_Mirai_6a77af0f Linux_Trojan_Mirai_e0cf29e2
Link:
https://app.threat.zone/submission/4d2ccab2-5498-48d7-bdd5-1340b0f9cf19
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f8bd4cfd5fa1/report/overview.html
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/f8bd4cfd5fa1370ffc124aced50648315cabdc9d0f1207e90f62d9f4c36ca41a

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:botnet_Yakuza
Create hunting rule
Author:NDA0E
Description:Yakuza botnet
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Trojan_Gafgyt_0cd591cd
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_33b4111a
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_620087b9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_807911a2
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_9e9530a7
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_a33a8363
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d0c57a2e
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d4227dbf
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d996d335
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_ea92cca8
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_6a77af0f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_e0cf29e2
Create hunting rule
Author:Elastic Security
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 65225f0c0c3ab73917183aa13c7fea945b729cc29abe8fd85f2e4ec4b761df8c

Mirai

elf f8bd4cfd5fa1370ffc124aced50648315cabdc9d0f1207e90f62d9f4c36ca41a

(this sample)

  
Dropped by
SHA256 65225f0c0c3ab73917183aa13c7fea945b729cc29abe8fd85f2e4ec4b761df8c
  
URLhaus
https://urlhaus.abuse.ch/url/3711448/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 ac0ed2c02a9177db8a831c96a38650c0

Comments