MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28f2ffa7ab41ddd7629188e5e292d8395aa0503bdb59d91c12fe7f992b81bb5e. 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: 11


Intelligence 11 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 28f2ffa7ab41ddd7629188e5e292d8395aa0503bdb59d91c12fe7f992b81bb5e
SHA3-384 hash: cc236abc6ccf86dc041e5cd65e9a8fd8130e7d3aff2a41660614ab8ce46e50a15b3b4feba3da985aaaf68af900a716b8
SHA1 hash: dc31a6ba2e79249c004c15b4559421ee49a13623
MD5 hash: b0b455f872a9cb99df2b44ae30fd2c28
humanhash: illinois-avocado-summer-finch
File name:kaizen.arm5
Download: download sample
Signature Mirai
Create hunting rule
File size:140'580 bytes
First seen:2026-06-06 07:03:40 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:WV35Drc1tOaBxXR+NlurWn8atC5iR1lY4DnifSAQ1yBk0M5SceMHETaEX:WVGWn8a1XctBRMd
TLSH T1BCD31B49F8D0CA63C9D427BBBA5D018D335257B9D2DE70029F146F242BDBE6A063F506
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
41
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.29502.LC.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-63.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30442.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29524.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Exploit-3.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7135987-0
Create hunting rule

Unix.Trojan.Mirai-9861139-0
Create hunting rule

Unix.Dropper.Mirai-9977145-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Sends data to a server
Receives data from a server
Opens a port
Runs as daemon
Substitutes an application name
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
Cve-2018-10088 masquerade obfuscated rust
Link:
https://www.filescan.io/uploads/6a23c68112da0d249c66c67e/reports/652aaef6-1bec-4eee-8fb4-e5457a2c99ad/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-06-05T23:48:00Z UTC
Last seen:
2026-06-06T00:01:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/28f2ffa7ab41ddd7629188e5e292d8395aa0503bdb59d91c12fe7f992b81bb5e/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/d01bbe1c-771d-4a5f-be41-044084ae2d1e
Behavior Graph:
Download SVG
%3 guuid=05cd35cc-2100-0000-251a-f79b0c090000 pid=2316 /usr/bin/sudo guuid=993828ce-2100-0000-251a-f79b11090000 pid=2321 /tmp/sample.bin guuid=05cd35cc-2100-0000-251a-f79b0c090000 pid=2316->guuid=993828ce-2100-0000-251a-f79b11090000 pid=2321 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/21e9feb0-030c-47b3-9d6c-81741bf37201
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1923959
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Uses known network protocols on non-standard ports
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1923959 Sample: kaizen.arm5.elf Startdate: 06/06/2026 Architecture: LINUX Score: 84 26 98.137.87.73, 55555 YAHOO-NE1-YahooHoldingsIncUS United States 2->26 28 220.6.116.133 XO-AS15-VerizonBusinessUS Japan 2->28 30 98 other IPs or domains 2->30 32 Suricata IDS alerts for network traffic 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 2 other signatures 2->38 8 kaizen.arm5.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        signatures3 process4 process5 14 kaizen.arm5.elf 8->14         started        16 kaizen.arm5.elf 8->16         started        process6 18 kaizen.arm5.elf 14->18         started        20 kaizen.arm5.elf 14->20         started        22 kaizen.arm5.elf 14->22         started        24 15 other processes 14->24
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/28f2ffa7ab41ddd7629188e5e292d8395aa0503bdb59d91c12fe7f992b81bb5e
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/28f2ffa7ab41ddd7629188e5e292d8395aa0503bdb59d91c12fe7f992b81bb5e/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/28f2ffa7ab41ddd7629188e5e292d8395aa0503bdb59d91c12fe7f992b81bb5e
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-06-06 04:44:37 UTC
File Type:
ELF32 Little (SO)
AV detection:
19 of 36 (52.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fdzp7j5liho5oyurrds6fewyhfnkaub33nm5shas7z7zsk4bxnpa._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
defense_evasion discovery
Link:
https://tria.ge/reports/260606-hv96eabz7l/
Behaviour
Changes its process name
Modifies Watchdog functionality
Contacts a large (785234) 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.

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:CVE_2017_17215
Create hunting rule
Author:NDA0E
Description:Detects exploitation attempt of CVE-2017-17215
Rule name:elf_arm_mips_ko_so
Create hunting rule
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:iot_req_metachar
Create hunting rule
Rule name:Linux_Generic_Threat_1ac392ca
Create hunting rule
Author:Elastic Security
Rule name:MAL_ELF_LNX_Mirai_Oct10_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects ELF Mirai variant
Reference:Internal Research
Rule name:MAL_ELF_LNX_Mirai_Oct10_1_RID2F39
Create hunting rule
Author:Florian Roth
Description:Detects ELF Mirai variant
Reference:Internal Research
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:testlumma
Create hunting rule
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 28f2ffa7ab41ddd7629188e5e292d8395aa0503bdb59d91c12fe7f992b81bb5e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3859595/
  
Delivery method
Distributed via web download

Comments