MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4099e66fb2d7464096cabfbfdf2740c42facc1505a5e1fb8d47e42fd74cc160d. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4099e66fb2d7464096cabfbfdf2740c42facc1505a5e1fb8d47e42fd74cc160d
SHA3-384 hash: 7efd38d4fa42c58bef62767df98cc485e2edc7cfc124007b0ff37c8fd85bd672af3967949ad43b9946ff03b9a3b14802
SHA1 hash: 15511eac8327c329d46be12eac33e49d2754a9d4
MD5 hash: cf2d7e478bd59ff38b959f5e6e8e7215
humanhash: diet-cardinal-pluto-queen
File name:kurayami.arm6
Download: download sample
Signature Mirai
Create hunting rule
File size:196'988 bytes
First seen:2026-03-30 06:59:27 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:SoHOLb7otuoJBONyMdUyGBZ1XSQHjoWaS7rbdKtuSarTErqx61:NHsbFA0kMdJ41X7HjfaMAtuHTErqx61
TLSH T1A8141886F8C18F11D5D012BEFA1E128E33135B78E1DE3212AD255B21778B9AB0F7B645
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-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 37586b88969bb679d2baa26a5385ef70bfcf239015d53f40f8113197e01c515a
File size (compressed) :73'656 bytes
File size (de-compressed) :196'988 bytes
Format:linux/arm
Packed file: 37586b88969bb679d2baa26a5385ef70bfcf239015d53f40f8113197e01c515a

Intelligence

File Origin
# of uploads :
1
# of downloads :
54
Origin country :
NL NL
Vendor Threat Intelligence
Gathering data
Detection(s):
Sanesecurity.Malware.30435.LC.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-7100807-0
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Unix.Dropper.Mirai-7135897-0
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Unix.Dropper.Mirai-7135901-0
Create hunting rule

Unix.Dropper.Mirai-7135909-0
Create hunting rule

Unix.Trojan.Mirai-7135916-0
Create hunting rule

Unix.Dropper.Mirai-7135918-0
Create hunting rule

Unix.Dropper.Mirai-7135954-0
Create hunting rule

Unix.Dropper.Mirai-7136016-0
Create hunting rule

Unix.Dropper.Mirai-7136028-0
Create hunting rule

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

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

Unix.Dropper.Mirai-10007027-0
Create hunting rule

Unix.Trojan.Mirai-10009361-0
Create hunting rule

Unix.Trojan.Mirai-10059006-0
Create hunting rule

Unix.Trojan.Mirai-10059216-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
lolbin masquerade mirai remote threat
Link:
https://www.filescan.io/uploads/69ca1f9ae2df9aa488bd90ba/reports/5bbea2ba-403f-4b49-8a22-20291a06fa86/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/4099e66fb2d7464096cabfbfdf2740c42facc1505a5e1fb8d47e42fd74cc160d
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/27f8d6d6-535a-4824-a077-63f431d9e07b
Behavior Graph:
Download SVG
%3 guuid=49966e98-1a00-0000-6735-b301fb0a0000 pid=2811 /usr/bin/sudo guuid=c630b99b-1a00-0000-6735-b301020b0000 pid=2818 /tmp/sample.bin guuid=49966e98-1a00-0000-6735-b301fb0a0000 pid=2811->guuid=c630b99b-1a00-0000-6735-b301020b0000 pid=2818 execve
Malware family:
Mirai
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/889a2f71-92b2-4655-87e5-c103a6ead5b3
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4099e66fb2d7464096cabfbfdf2740c42facc1505a5e1fb8d47e42fd74cc160d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4099e66fb2d7464096cabfbfdf2740c42facc1505a5e1fb8d47e42fd74cc160d/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-03-30 07:00:44 UTC
File Type:
ELF32 Little (Exe)
AV detection:
19 of 36 (52.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=icm6m35s25debfwkx6756j2ayqx2zqkqljpb7ogupzbp25gmcygq._file
Result
Malware family:
mirai
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Score:
  10/10
Tags:
family:mirai
Link:
https://tria.ge/reports/260330-hs1h7aaz5p/
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/4099e66fb2d7464096cabfbfdf2740c42facc1505a5e1fb8d47e42fd74cc160d

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: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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
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:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
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 37586b88969bb679d2baa26a5385ef70bfcf239015d53f40f8113197e01c515a

Mirai

elf 4099e66fb2d7464096cabfbfdf2740c42facc1505a5e1fb8d47e42fd74cc160d

(this sample)

  
Dropped by
SHA256 37586b88969bb679d2baa26a5385ef70bfcf239015d53f40f8113197e01c515a
  
Dropped by
MD5 477fda782b6603f03a735f9c6afd05f7
  
URLhaus
https://urlhaus.abuse.ch/url/3808207/
  
Delivery method
Distributed via web download

Comments