MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81ef910fb817f2a32f146561b8fac5f887e6310cbfdae0879e9f5f7a4ec5da01. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81ef910fb817f2a32f146561b8fac5f887e6310cbfdae0879e9f5f7a4ec5da01
SHA3-384 hash: 93f6ec380f09bd154e1ab410db0b595a9339f5cc598b9347f90bdeb2d4e0a25f03617f51e2cd25250f36087871c210f2
SHA1 hash: 40dad32d1be6613df95a517c19588714e80e961e
MD5 hash: 6538148aeed3beb6582721fdde966436
humanhash: autumn-equal-hot-lactose
File name:kt4
Download: download sample
Signature Mirai
Create hunting rule
File size:179'324 bytes
First seen:2025-08-16 13:26:22 UTC
Last seen:2025-08-17 05:39:51 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:SXENWFSUr72bkH3xF/j4e9x0c84b9M5NYgRsia:SXEN2SOvdj4eT0cBmvYgRsia
TLSH T1CF04D549FD109B2AC7D276FBF75D02CD363A1BACB3EA32128D315E5137C9AA16936110
telfhash t17721e27ae7640b8c1be44090d1cd522b5a7835bd0f662c52da597f0f8a81ec2702dc07
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

Intelligence

File Origin
# of uploads :
2
# of downloads :
71
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Linux.Mirai-61.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-63.UNOFFICIAL
Create hunting rule

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

Unix.Trojan.Mirai-7100807-0
Create hunting rule

Unix.Dropper.Mirai-7136013-0
Create hunting rule

Unix.Dropper.Mirai-7136057-0
Create hunting rule

Unix.Dropper.Mirai-7136070-0
Create hunting rule

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

Unix.Trojan.Mirai-9441505-0
Create hunting rule

Unix.Trojan.Mirai-9858729-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
botnet gcc lolbin mirai obfuscated remote
Link:
https://www.filescan.io/uploads/68a08704004f5721cb8125ba/reports/916a8810-9b11-4e45-b0a5-205207d51822/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/8549f0f8-87b5-43c7-a1b5-1a8999bfeee6
Behavior Graph:
Download SVG
%3 guuid=de437837-1c00-0000-2b19-a29efa080000 pid=2298 /usr/bin/sudo guuid=09d80539-1c00-0000-2b19-a29efb080000 pid=2299 /tmp/sample.bin guuid=de437837-1c00-0000-2b19-a29efa080000 pid=2298->guuid=09d80539-1c00-0000-2b19-a29efb080000 pid=2299 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c67847fd-8e9d-40ee-8b51-427886856576
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1758360
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/81ef910fb817f2a32f146561b8fac5f887e6310cbfdae0879e9f5f7a4ec5da01
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81ef910fb817f2a32f146561b8fac5f887e6310cbfdae0879e9f5f7a4ec5da01/
Verdict:
Malicious
Threat:
HEUR:Backdoor.Linux.Mirai
Link:
https://tip.neiki.dev/file/81ef910fb817f2a32f146561b8fac5f887e6310cbfdae0879e9f5f7a4ec5da01
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-08-16 12:54:47 UTC
File Type:
ELF32 Little (Exe)
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhxzcd5yc7zkglyumvq3r6wf7cd6mmimx7nobb46t5pxutwf3iaq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/250816-qpq5cax1ay/
Verdict:
Malicious
Tags:
botnet mirai Unix.Trojan.Mirai-7100807-0
YARA:
Mirai_Botnet_Malware
Link:
https://app.threat.zone/submission/ec648412-6620-42d9-97ea-1aa5ad3433aa
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/81ef910fb817f2a32f146561b8fac5f887e6310cbfdae0879e9f5f7a4ec5da01

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:Linux_Generic_Threat_d94e1020
Create hunting rule
Author:Elastic Security
Rule name:Linux_Mirai_Generic
Create hunting rule
Author:albertzsigovits
Description:Generic Approach to Mirai/Gafgyt samples
Rule name:Mirai_Botnet_Malware
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Mirai Botnet Malware
Reference:Internal Research
Rule name:Mirai_Botnet_Malware_RID2EF6
Create hunting rule
Author:Florian Roth
Description:Detects Mirai Botnet Malware
Reference:Internal Research
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 81ef910fb817f2a32f146561b8fac5f887e6310cbfdae0879e9f5f7a4ec5da01

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3603526/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3604022/
  
URLhaus
https://urlhaus.abuse.ch/url/3532689/

Comments