MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f1ac4c9ca7a488d4a62c47497e50d0934fe27a6cdaa607028d984cc2acfcaad. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8f1ac4c9ca7a488d4a62c47497e50d0934fe27a6cdaa607028d984cc2acfcaad
SHA3-384 hash: 435764dfc2c821cba7e120e6a170f31ef0a86f2e4db27d45eb9f8d8c1d8f7c67f1da0a436a8346f5bff33b27d4c52a68
SHA1 hash: 6e078d92625fb9413efc809a2e198c3724bd8630
MD5 hash: b2f384caff2cf03db8ca3b8901a2882d
humanhash: victor-video-eighteen-eight
File name:kt2
Download: download sample
Signature Mirai
Create hunting rule
File size:294'580 bytes
First seen:2025-08-21 19:58:52 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:JpG48MJ6qBuBE1DZuhjNaVwVvu3Pz2S1936k1obLmxWDjAr+:wMoq0IfJ93UbLX3AS
TLSH T1FD54123D7E22BF3FE6A8837107F65EB0875521D73692D280E1BCC6185EB029D185EB94
telfhash t194416d580a7813f4a3365c8e05ddff76a6a330db7e226d378e11e86aa7699834d10c1c
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
69
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.29325.LC.Pl.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-81.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-8041698-0
Create hunting rule

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

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

Unix.Trojan.Mirai-10011027-0
Create hunting rule

Unix.Trojan.Mirai-10011918-0
Create hunting rule

Unix.Trojan.Mirai-10017641-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Opens a port
DNS request
Runs as daemon
Sends data to a server
Connection attempt
Substitutes an application name
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
gcc obfuscated threat
Link:
https://www.filescan.io/uploads/68a77aad7137d6845836852d/reports/7e244b97-f743-4106-879c-aaa587c06d9b/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/1d929fd2-1345-4dd6-a493-ba305b752b19
Behavior Graph:
Download SVG
%3 guuid=d10da402-1700-0000-2bf5-7884340e0000 pid=3636 /usr/bin/sudo guuid=85495405-1700-0000-2bf5-7884400e0000 pid=3648 /tmp/sample.bin guuid=d10da402-1700-0000-2bf5-7884340e0000 pid=3636->guuid=85495405-1700-0000-2bf5-7884400e0000 pid=3648 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/e5caf9da-8433-4e0a-91eb-cd321a87dc1b
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1762466
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1762466 Sample: kt2.elf Startdate: 21/08/2025 Architecture: LINUX Score: 80 20 65.222.202.53, 80 CAPEREGIONALHEALTHSYSTEMUS United States 2->20 22 j48asd.dns.army 2->22 24 787892.dynv6.net 2->24 26 Malicious sample detected (through community Yara rule) 2->26 28 Antivirus / Scanner detection for submitted sample 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Yara detected Mirai 2->32 8 kt2.elf 2->8         started        signatures3 process4 process5 10 kt2.elf 8->10         started        process6 12 kt2.elf 10->12         started        14 kt2.elf 10->14         started        16 kt2.elf 10->16         started        18 30 other processes 10->18
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/8f1ac4c9ca7a488d4a62c47497e50d0934fe27a6cdaa607028d984cc2acfcaad
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8f1ac4c9ca7a488d4a62c47497e50d0934fe27a6cdaa607028d984cc2acfcaad/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/8f1ac4c9ca7a488d4a62c47497e50d0934fe27a6cdaa607028d984cc2acfcaad
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-08-21 19:59:34 UTC
File Type:
ELF32 Big (Exe)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r4nmjsokpjei2stcyr2jpzinbe2p4j5gzwvga4bi3gcmykwpzkwq._file
Result
Malware family:
n/a
Score:
  4/10
Tags:
n/a
Link:
https://tria.ge/reports/250821-yqmsbaxnx3/
Behaviour
Changes its process name
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Trojan.Mirai-7100807-0
YARA:
Linux_Trojan_Gafgyt_28a2fe0c Linux_Gafgyt_May_2024
Link:
https://app.threat.zone/submission/93396051-2c1a-42b5-995d-1add7e0928fe
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/8f1ac4c9ca7a488d4a62c47497e50d0934fe27a6cdaa607028d984cc2acfcaad

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Mirai_Generic
Create hunting rule
Author:albertzsigovits
Description:Generic Approach to Mirai/Gafgyt samples
Rule name:Linux_Trojan_Gafgyt_28a2fe0c
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 8f1ac4c9ca7a488d4a62c47497e50d0934fe27a6cdaa607028d984cc2acfcaad

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3604024/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh

Comments