MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de. 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: 12


Intelligence 12 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de
SHA3-384 hash: 961fa781232ec73cffc1747a4bebf3086425d9c11c6447e2833f6fe3332679861e7ecd2dac1db53a77088532c1b9045e
SHA1 hash: e5f1dea6d47d154bd53f6f3706cb83fcc454e46c
MD5 hash: 1e2cb94da88ca7bd5024c05201fedfb0
humanhash: march-oscar-salami-snake
File name:ciubuc_i686
Download: download sample
Signature Mirai
Create hunting rule
File size:2'539'768 bytes
First seen:2026-05-03 00:28:13 UTC
Last seen:2026-05-03 07:14:44 UTC
File type: elf
MIME type:application/x-executable
ssdeep 49152:zp60MIXVPzQBX/JcWpIGDtkkbpdL0VJ8lHMLuxTJrpPkV5m:zp60MIXZzQZpkqL0LuxTlpPB
TLSH T161C51744EAC780F5FE470E718167F33F4B306B05C420DEAADF94AE16EA3BB165119269
telfhash t167e202b3015d60eca7f084179abe7610cad6e43326e078b156ffbcc19632c5369768b9
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
57
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.28940.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29325.LC.Pl.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-81.UNOFFICIAL
Create hunting rule

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

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

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

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Deleting a recently created file
Sends data to a server
Sets a written file as executable
Opens a port
Deletes a file
Receives data from a server
Creating a file
Runs as daemon
Connection attempt
Changes access rights for a written file
Creating a process from a recently created file
Kills processes
Changes access rights for a file
Accesses SSH
Traces processes
Substitutes an application name
Deletes a system binary file
Deleting of the original file
Performs a bruteforce attack in the network
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 gafgyt mirai obfuscated rust
Link:
https://www.filescan.io/uploads/69f696ab2fcb905ec27abf8c/reports/233f4219-abc0-4b7b-8628-945701cd00e6/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
166
Number of processes launched:
8
Processes remaning?
true
Remote TCP ports scanned:
2323,23
Full report:
https://elfdigest.com/brief/3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de
Behaviour
Process Renaming
Anti-Debugging
Information Gathering
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-05-02T21:36:00Z UTC
Last seen:
2026-05-03T03:44:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a361030f-316a-4b3f-a392-589cc9014b7f
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-05-03 00:30:03 UTC
File Type:
ELF32 Little (Exe)
AV detection:
9 of 36 (25.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hnfwvjnrxlhpsf2cdd6ns7dwzk2djhh64l7qaqcsg7lknyuwotpa._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
defense_evasion discovery linux
Link:
https://tria.ge/reports/260503-asj77sdx2r/
Behaviour
Reads runtime system information
Changes its process name
Enumerates running processes
Deletes Audit logs
Deletes itself
Deletes journal logs
Deletes system logs
Modifies Watchdog functionality
Traces itself
Contacts a large (148481) 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:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:botnet_Yakuza
Create hunting rule
Author:NDA0E
Description:Yakuza botnet
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:Linux_Trojan_Gafgyt_28a2fe0c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_ea92cca8
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_3a56423b
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_aa39fb02
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_d18b3463
Create hunting rule
Author:Elastic Security
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
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
Rule name:WHIRLPOOL_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for WhirlPool constants

File information

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

Web download

Mirai

elf 3b4b6aa5b1bacef9174218fcd97c76cab4349cfee2ff00405237d6a6e29674de

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3828772/
  
Delivery method
Distributed via web download

Comments