MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f257a13ffd805be0f85de05168830ab684db593ba2388de3a96c9e8332c3346. 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: 6


Intelligence 6 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4f257a13ffd805be0f85de05168830ab684db593ba2388de3a96c9e8332c3346
SHA3-384 hash: ee8e55d25673e39e0d67bae865d01f0b1db1eff6748d81706dc98f5f84d2548dd4ca8596d11e9ea05b24b711e3d87db7
SHA1 hash: 66e47ee094d61efa4cc623060b7d91328f600fe3
MD5 hash: 743c1792d92c9570ff3afd0a31875ac8
humanhash: november-glucose-social-uniform
File name:mipsel
Download: download sample
Signature Mirai
Create hunting rule
File size:191'768 bytes
First seen:2026-01-04 09:08:05 UTC
Last seen:2026-01-05 08:08:09 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:5Y0NxsN+4gI65vZV8xaQw2WaHExwFVgZ8F:5Y7N+405xGuftwbjF
TLSH T17714C70AAF620FBBDCABDD7702F90A0128CCB85725653B753574E928F60A58B49D3C74
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 :
4
# of downloads :
79
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.BackDoor.Fgt.6236.16498.3726.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Changes access rights for a written file
Sets a written file as executable
Changes the time when the file was created, accessed, or modified
Creating a file in the %temp% directory
Runs as daemon
Collects information on the OS
Kills processes
Creating a file
Locks files
Launching a process
Opens a port
Sends data to a server
Collects information on the CPU
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Writes files to system directory
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
File Type:
elf.32.le
First seen:
2026-01-03T22:17:00Z UTC
Last seen:
2026-01-04T09:45:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4f257a13ffd805be0f85de05168830ab684db593ba2388de3a96c9e8332c3346/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/033afde7-d67b-4eef-9b71-a7fc3731a9b6
Behavior Graph:
Download SVG
%3 guuid=d6df15bc-2000-0000-25b6-b552c20a0000 pid=2754 /usr/bin/sudo guuid=1ce5bdbd-2000-0000-25b6-b552c50a0000 pid=2757 /tmp/sample.bin guuid=d6df15bc-2000-0000-25b6-b552c20a0000 pid=2754->guuid=1ce5bdbd-2000-0000-25b6-b552c50a0000 pid=2757 execve guuid=38d961be-2000-0000-25b6-b552c90a0000 pid=2761 /usr/bin/dash guuid=1ce5bdbd-2000-0000-25b6-b552c50a0000 pid=2757->guuid=38d961be-2000-0000-25b6-b552c90a0000 pid=2761 clone
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/354cc02d-9a4f-4e31-a75a-0bb1a6d79ac3
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.mine
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1844405
Signature
Found strings related to Crypto-Mining
Multi AV Scanner detection for submitted file
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4f257a13ffd805be0f85de05168830ab684db593ba2388de3a96c9e8332c3346
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4f257a13ffd805be0f85de05168830ab684db593ba2388de3a96c9e8332c3346/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-04 06:14:04 UTC
File Type:
ELF32 Little (Exe)
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j4sxue773ac34d4f3ycrncbqvnue3nmtxiryrxr2s3e6qmzmgnda._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/260104-k4a4sadz5e/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
System Network Configuration Discovery
Writes file to tmp directory
Changes its process name
Reads CPU attributes
Creates/modifies Cron job
Enumerates running processes
Modifies rc script
Modifies systemd
Write file to user bin folder
File and Directory Permissions Modification
Modifies hosts file
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c90a9dff-c896-4a72-b599-dea530ea32cc
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: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: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 4f257a13ffd805be0f85de05168830ab684db593ba2388de3a96c9e8332c3346

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3750028/
  
Delivery method
Distributed via web download

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