MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99cfa4eb1fc878b61eb532ecaea600038f3e789d31625fa413f669ff1ee5b22b. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99cfa4eb1fc878b61eb532ecaea600038f3e789d31625fa413f669ff1ee5b22b
SHA3-384 hash: 8a46ad8f7b9247610c45a1b2418c156dfa2a3c573a8272aba731a11b0b3ca9b1445b86ad4fd81fd1906e2462dde2e66e
SHA1 hash: 8ad5fb2dda7bc68f52871f5b43362e0191589688
MD5 hash: 87f29d4d2ef7a747da6e9cace4f1cf0a
humanhash: ack-low-yankee-bakerloo
File name:x86
Download: download sample
Signature Mirai
Create hunting rule
File size:87'344 bytes
First seen:2026-07-16 01:09:16 UTC
Last seen:2026-07-16 05:46:19 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:Rx0vpwbUFaujDjyEC0QEUOdyfJ41qz4PjBuLnmKSkJURrdJ89yf7:39b2aEjyECFN+2p4bBGfSpJV
TLSH T1F6838EC9FA03E0F1EC525AB10837A3175A76E5355538EF81EB912631BD13B00AB07B6E
telfhash t17f4149fa1e7f0dddb3906840a20e6b212d4e6b7b286036b345739c6522efe815577c38
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 :
3
# of downloads :
85
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30645.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.31075.LX.BOT.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-7755770-0
Create hunting rule

Unix.Trojan.Mirai-9885259-0
Create hunting rule

Unix.Trojan.Gafgyt-9940653-0
Create hunting rule

Unix.Trojan.Gafgyt-6735924-0
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
mirai
Link:
https://www.filescan.io/uploads/6a582f4c4f2ee00ea49629c7/reports/f8352376-8574-4d7c-aa01-05805014f5de/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
3
Processes remaning?
true
Remote TCP ports scanned:
2323,23
Full report:
https://elfdigest.com/brief/99cfa4eb1fc878b61eb532ecaea600038f3e789d31625fa413f669ff1ee5b22b
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
type: 74.125.250.129:19302
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-07-16T00:07:00Z UTC
Last seen:
2026-07-17T19:40:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/99cfa4eb1fc878b61eb532ecaea600038f3e789d31625fa413f669ff1ee5b22b/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f9e10ce3-56e7-4e59-a0b4-89e2cdf49441
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1943231
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Uses STUN server to do NAT traversial
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1943231 Sample: x86.elf Startdate: 16/07/2026 Architecture: LINUX Score: 76 18 stun.l.google.com 2->18 20 220.29.172.236 XO-AS15-VerizonBusinessUS Japan 2->20 22 100 other IPs or domains 2->22 24 Malicious sample detected (through community Yara rule) 2->24 26 Antivirus / Scanner detection for submitted sample 2->26 28 Multi AV Scanner detection for submitted file 2->28 30 Yara detected Mirai 2->30 8 x86.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        signatures3 32 Uses STUN server to do NAT traversial 18->32 process4 process5 14 x86.elf 8->14         started        process6 16 x86.elf 14->16         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/99cfa4eb1fc878b61eb532ecaea600038f3e789d31625fa413f669ff1ee5b22b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99cfa4eb1fc878b61eb532ecaea600038f3e789d31625fa413f669ff1ee5b22b/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-07-16 01:09:38 UTC
File Type:
ELF32 Little (Exe)
AV detection:
23 of 37 (62.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=thh2j2y7zb4lmhvvglwk5jqaaoht46e5gfrf7jat6zu76hxfwivq._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
antivm discovery linux
Link:
https://tria.ge/reports/260716-bh4drshz3n/
Behaviour
Reads runtime system information
Changes its process name
Checks CPU configuration
Unexpected DNS network traffic destination
Contacts a large (106945) amount of remote hosts
Creates a large amount of network flows
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.40
Link:
https://yomi.yoroi.company/submissions/99cfa4eb1fc878b61eb532ecaea600038f3e789d31625fa413f669ff1ee5b22b

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_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_Mirai_389ee3e9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
Create hunting rule
Author:Elastic Security
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
Rule name:woof_mirai_variant
Create hunting rule
Author:Nokia Deepfield ERT
Description:Detects Woof Mirai variant (ChaCha20 table, HTTP C2 with token/guid, .woof dropper)
Reference:Internal analysis of sample 6ef4ce02

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf 99cfa4eb1fc878b61eb532ecaea600038f3e789d31625fa413f669ff1ee5b22b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3884997/
  
Delivery method
Distributed via web download

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