MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a095b2f18caf5c97e89c61c605c294cb72f835afc76bf5e75aea009d8ec39ff. 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: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a095b2f18caf5c97e89c61c605c294cb72f835afc76bf5e75aea009d8ec39ff
SHA3-384 hash: 72d0ed52fee411ea79f6cbd116478305d89455303a95355e4cf2f62f142dfbbb708075c8bc43d9e0f704ac8d6851d3c0
SHA1 hash: 4588610cb28deff6c176813c209480e95ca57c9d
MD5 hash: d797d2f80a713f9ca93d4beff102e9cb
humanhash: tango-lactose-colorado-magnesium
File name:b5x
Download: download sample
Signature Mirai
Create hunting rule
File size:75'516 bytes
First seen:2026-08-04 12:36:35 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:a1hjGC+ig4TlqbV5Vrj3miAQ6uzaRvZdaTwNZcrOF6EqRAh5Dfr:a1hqvZ4kZ5d3rA/uGxDcwHYOF6EqRg
TLSH T1A0731726B9419F0BC6C25677BF2E8349331627BCE3DA3103DE156F6137DB52A0E2A941
telfhash t17bf08bab450828ec3bf4d30656dea11640a435bf2551ca3431e9ee4780e39a2f812c0c
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 :
78
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Verdict:
Clean
Maliciousness:
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
expand lolbin rust
Link:
https://www.filescan.io/uploads/6a71dd0930f80d5046148b9d/reports/778f2f10-1c5b-403c-b067-78dbb2d9f2f5/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-08-04T06:27:00Z UTC
Last seen:
2026-08-04T06:59:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4a095b2f18caf5c97e89c61c605c294cb72f835afc76bf5e75aea009d8ec39ff/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/39e1cbee-0be9-4adb-9ce6-7b5dd06a3175
Result
Threat name:
Generic IoTBotnet
Create hunting rule
Detection:
malicious
Classification:
spre.troj
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1951908
Signature
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Yara detected Generic IoTBotnet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1951908 Sample: b5x.elf Startdate: 04/08/2026 Architecture: LINUX Score: 84 42 129.121.110.105, 25565, 8080 ORACLE-BMC-31898-OracleCorporationUS United States 2->42 44 129.121.114.124, 8081 ORACLE-BMC-31898-OracleCorporationUS United States 2->44 46 2 other IPs or domains 2->46 48 Antivirus / Scanner detection for submitted sample 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 Yara detected Generic IoTBotnet 2->52 10 b5x.elf 2->10         started        12 systemd snapd-env-generator 2->12         started        14 systemd snapd-env-generator 2->14         started        16 6 other processes 2->16 signatures3 process4 process5 18 b5x.elf 10->18         started        process6 20 b5x.elf 18->20         started        process7 22 b5x.elf 20->22         started        26 b5x.elf 20->26         started        28 b5x.elf 20->28         started        30 6 other processes 20->30 file8 36 /etc/rc.local, POSIX 22->36 dropped 38 /etc/crontab, ASCII 22->38 dropped 40 /etc/cron.d/crond, ASCII 22->40 dropped 54 Sample tries to set files in /etc globally writable 22->54 56 Sample reads /proc/mounts (often used for finding a writable filesystem) 22->56 58 Sample tries to persist itself using cron 22->58 60 Sample tries to persist itself using System V runlevels 22->60 32 b5x.elf systemctl 22->32         started        34 b5x.elf systemctl 22->34         started        62 Sample tries to kill multiple processes (SIGKILL) 26->62 signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4a095b2f18caf5c97e89c61c605c294cb72f835afc76bf5e75aea009d8ec39ff
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a095b2f18caf5c97e89c61c605c294cb72f835afc76bf5e75aea009d8ec39ff/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-04 12:37:40 UTC
File Type:
ELF32 Little (Exe)
AV detection:
12 of 36 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jievwlyyzl24s7ujyyogaxbjjs3s7a227r3l6xtvv2qatwhmhh7q._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/260804-ptqhyaep9t/
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:Linux_Generic_Threat_e9aef030
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

File information

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

Web download

Mirai

sh 9431f74597e31c1efb2c724881b74ad1d95e6c3ad8938868f8cf77bd80874776

Mirai

elf 4a095b2f18caf5c97e89c61c605c294cb72f835afc76bf5e75aea009d8ec39ff

(this sample)

  
Dropped by
SHA256 9431f74597e31c1efb2c724881b74ad1d95e6c3ad8938868f8cf77bd80874776
  
Dropped by
MD5 6d9e87251609acb981b2618e6eebc84e
  
Dropped by
SHA256 7e9336f205cc08240bc638cde5a91efcb162f9573f5064ddd81e34d635f0a8a6
  
Dropped by
MD5 028ebc88cecb43281035961ca27b91b9
  
URLhaus
https://urlhaus.abuse.ch/url/3887342/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3887344/
  
URLhaus
https://urlhaus.abuse.ch/url/3896823/

Comments