MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81d240a5d99bc948a58d3d7c746b39c4f36848bb4a6c488fff2558a9ad17c1ae. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81d240a5d99bc948a58d3d7c746b39c4f36848bb4a6c488fff2558a9ad17c1ae
SHA3-384 hash: 62ad219878f191797a37495fd1b191659dd89ea5c072792a4e0235b46d05631318ce3cf5ef5dda5ff3b32378bda0078f
SHA1 hash: 727265261893349f5b40a4e149b492733ef16aa4
MD5 hash: 2b1c2001798fb2ad1cd0c6657c6e316e
humanhash: lake-minnesota-michigan-zebra
File name:armv6l
Download: download sample
Signature Mirai
Create hunting rule
File size:84'300 bytes
First seen:2025-04-07 03:47:23 UTC
Last seen:2025-04-19 06:51:15 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:MlnybjYPYLDsbow5XDwiYwowNTmRnMrlLfRZQsyJbMM1i4Y/OJf9:54PYLbw5XDhrvmsdfR6Y/OJf9
TLSH T167833A4ABD829B61C9D52279FA1E518E33131778D3EF72128E201F2477CE96B0E7B542
telfhash t19dc08cf6eb303c4c8ee45aede3dc0b325a90e4234d0426b1e8c84f1ba662d4ab40a525
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 :
84
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Linux.Mirai.8670.29889.31224.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f34b2ce011fe619fabcd36linux22vpnfull_triage
Tags:
ransomware mirai
Result
Verdict:
Malware
Maliciousness:

Behaviour
Runs as daemon
Connection attempt
Receives data from a server
Opens a port
DNS request
Sends data to a server
Kills processes
Substitutes an application name
Deleting of the original file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
mirai obfuscated
Link:
https://www.filescan.io/uploads/67f34af72d430c849e098fff/reports/a5ea4ded-5a2b-44c7-9868-725d43d781c5/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
true
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
15
Number of processes launched:
2
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/81d240a5d99bc948a58d3d7c746b39c4f36848bb4a6c488fff2558a9ad17c1ae
Behaviour
Anti-VM
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
type: 172.217.192.127:3478
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/82e90508-a500-422f-9016-0480cc637371
Result
Threat name:
n/a
Detection:
malicious
Classification:
spyw.evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1657994
Signature
Multi AV Scanner detection for submitted file
Opens /sys/class/net/* files useful for querying network interface information
Performs DNS TXT record lookups
Sample deletes itself
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1657994 Sample: armv6l.elf Startdate: 07/04/2025 Architecture: LINUX Score: 60 16 kHbW.gwYhHCOrybwjWuzh.live 2->16 18 KDXA.GaihWstPZUoMtfnU.info 2->18 20 2 other IPs or domains 2->20 22 Multi AV Scanner detection for submitted file 2->22 8 armv6l.elf 2->8         started        signatures3 24 Performs DNS TXT record lookups 18->24 process4 signatures5 26 Sample deletes itself 8->26 11 armv6l.elf 8->11         started        process6 signatures7 28 Opens /sys/class/net/* files useful for querying network interface information 11->28 14 armv6l.elf 11->14         started        process8
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/81d240a5d99bc948a58d3d7c746b39c4f36848bb4a6c488fff2558a9ad17c1ae
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81d240a5d99bc948a58d3d7c746b39c4f36848bb4a6c488fff2558a9ad17c1ae/
Threat name:
Linux.Trojan.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-03-31 00:13:54 UTC
File Type:
ELF32 Little (Exe)
AV detection:
17 of 36 (47.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhjebjoztpeurjmnhv6hi2zzytzwqsf3jjwerd77evmktlixygxa._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery
Link:
https://tria.ge/reports/250407-ecttxsxxhw/
Behaviour
Enumerates kernel/hardware configuration
Changes its process name
Reads system network configuration
Reads MAC address of network interface
Reads network interface configuration
Deletes itself
Unexpected DNS network traffic destination
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/81d240a5d99bc948a58d3d7c746b39c4f36848bb4a6c488fff2558a9ad17c1ae

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_Threat_d2dca9e7
Create hunting rule
Author:Elastic Security
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: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 81d240a5d99bc948a58d3d7c746b39c4f36848bb4a6c488fff2558a9ad17c1ae

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3474550/
  
Delivery method
Distributed via web download

Comments