MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b1f8f7ee1f0bd0e1b6b8396a840e73c0d6674d51e402c668a9db3dec093902f5. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b1f8f7ee1f0bd0e1b6b8396a840e73c0d6674d51e402c668a9db3dec093902f5
SHA3-384 hash: d3a30ae1323eaa4ea1d9bdd4f095b29e571e738a4479ee0121da05658c2b92be1757db9f6a96d8320c2d96620065bc6b
SHA1 hash: c20d69c1017152166322a16b1ce0d21a08ba1882
MD5 hash: 4f3d47db4b25414f1af894a9589e50f1
humanhash: lake-indigo-uncle-indigo
File name:kvariant.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:83'880 bytes
First seen:2026-01-18 17:57:44 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:OuifE9VziAk4CoWU0Nd+sQQCEf5Hc8AoC35Yaxu:OuR9zk4CTDXYEf5HJLe5fk
TLSH T17C835B13909490FDD4DAD67C4F9FA526DA22F03E1372B65E63D46E273A0DE202F4E249
telfhash t18531ab71396a29e061f7a6357346d4a9a8030a5021ea31e7ec73b4f6dfa73c12d22037
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 gafgyt mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
51
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.29524.LC.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7540662-0
Create hunting rule

Unix.Exploit.Mirai-9795501-0
Create hunting rule

Unix.Exploit.Mirai-9798002-0
Create hunting rule

Unix.Dropper.Mirai-9977145-0
Create hunting rule

Unix.Trojan.Mirai-10042554-0
Create hunting rule

Unix.Trojan.Mirai-10042555-0
Create hunting rule

Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-01-18T15:04:00Z UTC
Last seen:
2026-01-19T12:53:00Z UTC
Hits:
~10
Detections:
HEUR:Exploit.Linux.CVE-2017-17215.a HEUR:Backdoor.Linux.Gafgyt.ge
Link:
https://opentip.kaspersky.com/b1f8f7ee1f0bd0e1b6b8396a840e73c0d6674d51e402c668a9db3dec093902f5/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e3d25df1-14cd-4b2b-a0c5-5cf4a86cd031
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1852867
Signature
Antivirus / Scanner detection for submitted sample
Connects to many IPs within the same subnet mask (likely port scanning)
Connects to many ports of the same IP (likely port scanning)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Uses known network protocols on non-standard ports
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1852867 Sample: kvariant.x86.elf Startdate: 18/01/2026 Architecture: LINUX Score: 92 21 156.158.248.183 airtel-tz-asTZ Tanzania United Republic of 2->21 23 156.96.173.170 XNSTGCA United States 2->23 25 98 other IPs or domains 2->25 27 Malicious sample detected (through community Yara rule) 2->27 29 Antivirus / Scanner detection for submitted sample 2->29 31 Multi AV Scanner detection for submitted file 2->31 33 4 other signatures 2->33 9 kvariant.x86.elf 2->9         started        11 python3.8 dpkg 2->11         started        signatures3 process4 process5 13 kvariant.x86.elf 9->13         started        process6 15 kvariant.x86.elf 13->15         started        process7 17 kvariant.x86.elf 15->17         started        19 kvariant.x86.elf 15->19         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b1f8f7ee1f0bd0e1b6b8396a840e73c0d6674d51e402c668a9db3dec093902f5
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b1f8f7ee1f0bd0e1b6b8396a840e73c0d6674d51e402c668a9db3dec093902f5/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/b1f8f7ee1f0bd0e1b6b8396a840e73c0d6674d51e402c668a9db3dec093902f5
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-18 17:50:47 UTC
File Type:
ELF64 Little (Exe)
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wh4pp3q7bpiodnvyhfviidttydlgotkr4qbmm2fj3m66ycjzal2q._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery linux
Link:
https://tria.ge/reports/260118-wkcdaab16c/
Behaviour
Changes its process name
Contacts a large (74966) amount of remote hosts
Creates a large amount of network flows
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Dropper.Mirai-7540662-0
YARA:
Linux_Trojan_Gafgyt_9e9530a7 Linux_Trojan_Gafgyt_807911a2 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
Link:
https://app.threat.zone/submission/44e46985-3649-43cc-85af-9944929ca980
Please note that we are no longer able to provide a coverage score for Virus Total.

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:CVE_2017_17215
Create hunting rule
Author:NDA0E
Description:Detects exploitation attempt of CVE-2017-17215
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
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: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 b1f8f7ee1f0bd0e1b6b8396a840e73c0d6674d51e402c668a9db3dec093902f5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3759821/
  
Delivery method
Distributed via web download

Comments