MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e3b3cfe47920a18fc373c86f99509d57289db49ec086bb8a8d4c9b84f3abcc4e. 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

SHA256 hash:	e3b3cfe47920a18fc373c86f99509d57289db49ec086bb8a8d4c9b84f3abcc4e
SHA3-384 hash:	bdd771b1e7d3e8272c9ed04b4cd17004da245c413d74478d31f11a182956ececdef63a94ba7653c227315b16e2fd82d2
SHA1 hash:	b9c6b4334322f5e2b45a3eed0c1b98b31cd8fe10
MD5 hash:	207ba7387801640cad190a01fbb8c685
humanhash:	aspen-berlin-uranus-alpha
File name:	Polar.arm5
Download:	download sample
Signature	Mirai Create hunting rule
File size:	32'148 bytes
First seen:	2025-12-04 16:49:03 UTC
Last seen:	2025-12-05 15:21:11 UTC
File type:	elf
MIME type:	application/x-executable
ssdeep	768:niLfi+jD6fX63cizKYZtPkc7PGIs3Uozw/:iuhgPpLG9zQ
TLSH	T1DBE2F1D879E64A90C236383FB66D82C2033B156982B4B6B53350571C62D6C8D77FFB92
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

UPX packed

This file is packed with UPX. We have therefore unpacked the file. Below is furhter information about the unpacked (de-compressed) file.

File size (compressed) :	32'148 bytes
File size (de-compressed) :	75'268 bytes
Format:	linux/arm
Unpacked file:	3fe49d268aff36e623eb346633f1c19b5f30f5ceb9dca829ce3f12bab6e04e38

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/58453b6d-a1ab-467d-9cbc-e9ebd5dfbf51/

Detection(s):

SecuriteInfo.com.Linux.Mirai-18.UNOFFICIAL

Verdict:

Unknown

Threat level:

0/10

Confidence:

100%

Tags:

masquerade packed upx

Link:

https://www.filescan.io/uploads/6931bb8eff25e40750d3af9c/reports/f6d8c09c-7166-47b1-84eb-c27767ad8dcd/overview

Verdict:

Malicious

File Type:

elf.32.le

First seen:

2025-12-04T21:02:00Z UTC

Last seen:

2025-12-06T01:30:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/e3b3cfe47920a18fc373c86f99509d57289db49ec086bb8a8d4c9b84f3abcc4e/results?tab=lookup

Status:

Failed

Link:

https://sandbox.kunai.rocks/analysis/38bb9638-88b1-49d6-838d-77fbb3dc8c0b

Malware family:

Mirai

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/d9b0e9f4-bca0-448e-8817-7712ec4eb8b7

Result

Threat name:

n/a

Detection:

malicious

Classification:

evad

Score:

60 / 100

Link:

https://www.joesandbox.com/analysis/1826528

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/e3b3cfe47920a18fc373c86f99509d57289db49ec086bb8a8d4c9b84f3abcc4e

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/e3b3cfe47920a18fc373c86f99509d57289db49ec086bb8a8d4c9b84f3abcc4e/

Threat name:

Linux.Backdoor.Mirai

Status:

Malicious

First seen:

2025-12-04 16:49:19 UTC

File Type:

ELF32 Little (Exe)

AV detection:

20 of 36 (55.56%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=4oz47zdzecqy7q3tzbxzsue5k4uj3ne6ycdlxcunjsnyj45lzrha._file

Result

Malware family:

n/a

Score:

5/10

Tags:

upx

Link:

https://tria.ge/reports/251204-vbss8szrey/

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/16aa01de-8149-46db-8388-37dc1ec3ae6a

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/e3b3cfe47920a18fc373c86f99509d57289db49ec086bb8a8d4c9b84f3abcc4e

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:	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