MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3f1e7014dfba66c06190cfa803ea2dc947f59a0b6f437f3ec6f9263b34cb4a0. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3f1e7014dfba66c06190cfa803ea2dc947f59a0b6f437f3ec6f9263b34cb4a0
SHA3-384 hash: 10d3cf05e21ffe878ffd6218a40a3fb2c2fe850683c202eaee29a8ae9ab9d454f4c2ade39c9008f597488327583cb11e
SHA1 hash: d4f5f79f9cbe0fcc79623ff3607c33c1dadd1ba3
MD5 hash: a9412642cbb00016f6a2525b3c48034f
humanhash: table-cold-mountain-network
File name:top1miku.sh4
Download: download sample
Signature Mirai
Create hunting rule
File size:154'052 bytes
First seen:2025-07-19 14:07:24 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:4qGvWhsWtBu7gqRnFjoYfDC2FKWQKQ4R0unlFtqWVaR1jyI/czo93W:4Rsft47nzoYrjMWx0ulbqWER1rFtW
TLSH T131E37C73D8356EA8D210C9B0B0609F781B63956485872FFA58ABC3759043DDDFA4A3F8
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 :
18
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Dropper.Mirai-7136288-0
Create hunting rule

Unix.Trojan.Mirai-7138377-0
Create hunting rule

Unix.Trojan.Mirai-7674518-0
Create hunting rule

Unix.Trojan.Generic-9910199-0
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated
Link:
https://www.filescan.io/uploads/687ba6db8a7d628a81b7a3f8/reports/7beba1fb-ad4a-4609-9107-358519ea2652/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/77819f78-c6f6-4e9b-9211-b38ba6ac27c8
Behavior Graph:
Download SVG
%3 guuid=16734964-1900-0000-c142-badc67140000 pid=5223 /usr/bin/sudo guuid=72e4b765-1900-0000-c142-badc68140000 pid=5224 /tmp/sample.bin guuid=16734964-1900-0000-c142-badc67140000 pid=5223->guuid=72e4b765-1900-0000-c142-badc68140000 pid=5224 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/52f3d0ca-ffee-474f-a3ef-b4f3c0a98280
Result
Threat name:
Gafgyt, Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1740131
Signature
Connects to many ports of the same IP (likely port scanning)
Drops files in suspicious directories
Drops invisible ELF files
Found strings related to Crypto-Mining
Multi AV Scanner detection for submitted file
Sample tries to kill multiple processes (SIGKILL)
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Uses dynamic DNS services
Yara detected Gafgyt
Yara detected Mirai
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1740131 Sample: top1miku.sh4.elf Startdate: 19/07/2025 Architecture: LINUX Score: 100 46 top1miku.duckdns.org 2->46 48 71.16.36.148 WINDSTREAMUS United States 2->48 50 99 other IPs or domains 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 Yara detected Gafgyt 2->54 56 Yara detected Mirai 2->56 60 2 other signatures 2->60 10 top1miku.sh4.elf 2->10         started        13 gnome-session-binary sh gnome-shell 2->13         started        15 xfce4-session xfwm4 2->15         started        17 17 other processes 2->17 signatures3 58 Uses dynamic DNS services 46->58 process4 signatures5 68 Found strings related to Crypto-Mining 10->68 19 top1miku.sh4.elf 10->19         started        process6 process7 21 top1miku.sh4.elf 19->21         started        file8 42 /etc/init.d/sysd, POSIX 21->42 dropped 62 Sample tries to set files in /etc globally writable 21->62 64 Drops files in suspicious directories 21->64 66 Sample tries to persist itself using System V runlevels 21->66 25 top1miku.sh4.elf sh 21->25         started        27 top1miku.sh4.elf 21->27         started        signatures9 process10 signatures11 30 sh cp 25->30         started        70 Sample tries to kill multiple processes (SIGKILL) 27->70 34 top1miku.sh4.elf sh 27->34         started        36 top1miku.sh4.elf sh 27->36         started        38 top1miku.sh4.elf sh 27->38         started        40 9 other processes 27->40 process12 file13 44 /usr/bin/.sh, ELF 30->44 dropped 72 Drops invisible ELF files 30->72 74 Drops files in suspicious directories 30->74 signatures14
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b3f1e7014dfba66c06190cfa803ea2dc947f59a0b6f437f3ec6f9263b34cb4a0
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3f1e7014dfba66c06190cfa803ea2dc947f59a0b6f437f3ec6f9263b34cb4a0/
Verdict:
Malicious
Threat:
Linux.Backdoor.Gafgyt
Link:
https://tip.neiki.dev/file/b3f1e7014dfba66c06190cfa803ea2dc947f59a0b6f437f3ec6f9263b34cb4a0
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-07-19 14:08:24 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 22 (63.64%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wpy6oakn7otgybqzbt5iapvc3skh6wnaw32dp47mn6jghm2mwsqa._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai linux
Link:
https://tria.ge/reports/250719-re8gbaej7x/
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7136288-0
YARA:
n/a
Link:
https://app.threat.zone/submission/492547c0-b401-4cd7-a494-5b0328188ee4
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/b3f1e7014dfba66c06190cfa803ea2dc947f59a0b6f437f3ec6f9263b34cb4a0

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: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 b3f1e7014dfba66c06190cfa803ea2dc947f59a0b6f437f3ec6f9263b34cb4a0

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3581186/
  
Delivery method
Distributed via web download

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