MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30. 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: 13


Intelligence 13 IOCs YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30
SHA3-384 hash: 83e63ccce949092afd619690aacff987a791761e6d6af66d9b5a838020e5c87792652fce1ec260270683654a92d2467f
SHA1 hash: 00fd391d0f9574e457c7436eb8211b0f1d560c4d
MD5 hash: a896bb38b0c8fa33e9409b9309a4f63c
humanhash: triple-mockingbird-ten-music
File name:mao.i686
Download: download sample
Signature Mirai
Create hunting rule
File size:67'248 bytes
First seen:2026-01-31 16:41:21 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:Um9/coD3ZIK8SQIGcmhjsXZel7tjgZdGeOv:Um9H3GK8SQrcKj/lN4dX+
TLSH T131630AC4F98781F6CA1B4D3091B7F23FCA31D9798170876DEF9AAF35DA279029112189
telfhash t1121106fe167d0cfc97d89411824a0f217659aa7f21203351056369bd357fe5620bdc3c
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 :
1
# of downloads :
49
Origin country :
DE DE
Vendor Threat Intelligence
Malware configuration found for:
Mirai
Details
Mirai
an XOR decryption key and at least a c2 socket address
Link:
https://research.acce.ciphertechsolutions.com/results/214c47ee-e1ee-49b4-bc72-17b4e02c66b1/
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-9907086-0
Create hunting rule

Unix.Dropper.Mirai-10008433-0
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated
Link:
https://www.filescan.io/uploads/697e30c9c9bfb60ece19e89b/reports/a8759638-94ea-469f-98c0-b41bd870b660/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
1
Number of processes launched:
5
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-31T13:57:00Z UTC
Last seen:
2026-02-02T00:46:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.es HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/03210346-0f2f-4ec6-b7bf-8d332b7d47bf
Behavior Graph:
Download SVG
%3 guuid=01678384-1a00-0000-c04e-4953b50a0000 pid=2741 /usr/bin/sudo guuid=44d48386-1a00-0000-c04e-4953ba0a0000 pid=2746 /tmp/sample.bin net guuid=01678384-1a00-0000-c04e-4953b50a0000 pid=2741->guuid=44d48386-1a00-0000-c04e-4953ba0a0000 pid=2746 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=44d48386-1a00-0000-c04e-4953ba0a0000 pid=2746->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=e86aac86-1a00-0000-c04e-4953bb0a0000 pid=2747 /tmp/sample.bin guuid=44d48386-1a00-0000-c04e-4953ba0a0000 pid=2746->guuid=e86aac86-1a00-0000-c04e-4953bb0a0000 pid=2747 clone guuid=1589af86-1a00-0000-c04e-4953bc0a0000 pid=2748 /tmp/sample.bin dns net send-data zombie guuid=44d48386-1a00-0000-c04e-4953ba0a0000 pid=2746->guuid=1589af86-1a00-0000-c04e-4953bc0a0000 pid=2748 clone guuid=1589af86-1a00-0000-c04e-4953bc0a0000 pid=2748->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 29B a11803fe-5fd8-544d-b13b-84f58f3c81f8 mn.34509.su:25565 guuid=1589af86-1a00-0000-c04e-4953bc0a0000 pid=2748->a11803fe-5fd8-544d-b13b-84f58f3c81f8 send: 15B guuid=8010d686-1a00-0000-c04e-4953be0a0000 pid=2750 /tmp/sample.bin guuid=1589af86-1a00-0000-c04e-4953bc0a0000 pid=2748->guuid=8010d686-1a00-0000-c04e-4953be0a0000 pid=2750 clone guuid=e4e3da86-1a00-0000-c04e-4953bf0a0000 pid=2751 /tmp/sample.bin dns net send-data guuid=1589af86-1a00-0000-c04e-4953bc0a0000 pid=2748->guuid=e4e3da86-1a00-0000-c04e-4953bf0a0000 pid=2751 clone guuid=e4e3da86-1a00-0000-c04e-4953bf0a0000 pid=2751->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 29B guuid=e4e3da86-1a00-0000-c04e-4953bf0a0000 pid=2751->a11803fe-5fd8-544d-b13b-84f58f3c81f8 send: 15B
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/41571b69-29ae-47bb-b639-a10960d4ddff
Result
Threat name:
Okiru
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1860963
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Okiru
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1860963 Sample: mao.i686.elf Startdate: 31/01/2026 Architecture: LINUX Score: 64 22 109.202.202.202, 80 INIT7CH Switzerland 2->22 24 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->24 26 3 other IPs or domains 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Yara detected Okiru 2->32 8 mao.i686.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        signatures3 process4 process5 14 mao.i686.elf 8->14         started        16 mao.i686.elf 8->16         started        process6 18 mao.i686.elf 14->18         started        20 mao.i686.elf 14->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-31 16:34:08 UTC
File Type:
ELF32 Little (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fnkbx73nscmr5wecya4vq7rweowozsodymvfek3jusllyufpxyya._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion linux
Link:
https://tria.ge/reports/260131-t7h38sc12f/
Behaviour
Changes its process name
Modifies Watchdog functionality
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30

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_3bcc1630
Create hunting rule
Author:Elastic Security
Rule name:Linux_Generic_Threat_da28eb8b
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_0cb1699c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_0d73971c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_268aac0b
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_2e3f67a9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_485c4b13
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_70ef58f1
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_7d05725e
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_88de437f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
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 2b541bff6d90991ed882c039587e3623acecc9c3c32a522b69a496bc50afbe30

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3766692/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3766750/

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