MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6dec293665c624ca094b8d312697a50d0e757deef68f3e5bd71bb80cf994036e. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6dec293665c624ca094b8d312697a50d0e757deef68f3e5bd71bb80cf994036e
SHA3-384 hash: e963ffed89f4542805e9aa762af779b61bef5a9c83245ccbd1fdb7a0e87e04a189e2cb5ed80e79d4c7ae09220d9ad6c2
SHA1 hash: 5543cdf0ba44f2ccc1b38c748af8618cabd3c94e
MD5 hash: 73da6329d37791005f8ed9632eaf6393
humanhash: stairway-uniform-white-leopard
File name:kworkerd-irq
Download: download sample
Signature Mirai
Create hunting rule
File size:275'412 bytes
First seen:2026-06-27 17:27:48 UTC
Last seen:2026-06-28 03:29:33 UTC
File type: elf
MIME type:application/x-executable
ssdeep 6144:0Z0wsFsXof+Lf9smhLLl4JeAusERf6By2YFY:0JsF83vLl4MG4HFY
TLSH T1D044085ABE419F17C6C216F7FBAD4288371A7BA8C6EE3113D8146F50379A48F0E36251
telfhash t145d0a91288aa25f6f3080cb085fa0b75ada8a0a3160587a298e42cfd04429a01020e0b
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 :
2
# of downloads :
67
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Verdict:
Clean
Maliciousness:
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/6dec293665c624ca094b8d312697a50d0e757deef68f3e5bd71bb80cf994036e
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/e8c5080b-3e50-4ff1-a207-9d5cc785b36c
Behavior Graph:
Download SVG
%3 guuid=6fb996de-1e00-0000-8a8b-08a83f140000 pid=5183 /usr/bin/sudo guuid=3a7139e4-1e00-0000-8a8b-08a840140000 pid=5184 /tmp/sample.bin guuid=6fb996de-1e00-0000-8a8b-08a83f140000 pid=5183->guuid=3a7139e4-1e00-0000-8a8b-08a840140000 pid=5184 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4c5e6f85-d7ae-4442-a8c2-d396e0e2ad58
Result
Threat name:
Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1934493
Signature
Executes itself again with its parent PID as an argument (indicative of hampering debugging)
Executes the "crontab" command typically for achieving persistence
Found strings related to Crypto-Mining
Multi AV Scanner detection for submitted file
Opens /sys/class/net/* files useful for querying network interface information
Performs DNS TXT record lookups
Sample deletes itself
Sample tries to persist itself using cron
Yara detected Mirai
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1934493 Sample: kworkerd-irq.elf Startdate: 27/06/2026 Architecture: LINUX Score: 92 57 nzr.narxzz.biz.id 2->57 59 nzr.narxzz.biz.id 103.253.212.175, 34964, 6868 CRI-AS-APCVRumahwebIndonesiaID Indonesia 2->59 61 2 other IPs or domains 2->61 65 Multi AV Scanner detection for submitted file 2->65 67 Yara detected Mirai 2->67 69 Yara detected Xmrig cryptocurrency miner 2->69 10 kworkerd-irq.elf 2->10         started        13 systemd sh 2->13         started        15 systemd snap-failure 2->15         started        17 2 other processes 2->17 signatures3 71 Performs DNS TXT record lookups 57->71 process4 signatures5 73 Found strings related to Crypto-Mining 10->73 19 kworkerd-irq.elf 10->19         started        21 sh wget 13->21         started        23 sh sh 13->23         started        25 sh rm 13->25         started        27 snap-failure systemctl 15->27         started        29 snap-failure 15->29         started        process6 process7 31 kworkerd-irq.elf 19->31         started        signatures8 79 Opens /sys/class/net/* files useful for querying network interface information 31->79 81 Sample deletes itself 31->81 34 kworkerd-irq.elf sh 31->34         started        37 kworkerd-irq.elf sh 31->37         started        39 kworkerd-irq.elf sh 31->39         started        41 2 other processes 31->41 process9 signatures10 63 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 34->63 43 sh crontab 34->43         started        47 sh crontab 37->47         started        49 sh systemctl 39->49         started        51 sh systemctl 41->51         started        53 kworkerd-irq.elf 41->53         started        process11 file12 55 /var/spool/cron/crontabs/tmp.uiW4uy, ASCII 43->55 dropped 75 Sample tries to persist itself using cron 43->75 77 Executes the "crontab" command typically for achieving persistence 43->77 signatures13
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/6dec293665c624ca094b8d312697a50d0e757deef68f3e5bd71bb80cf994036e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6dec293665c624ca094b8d312697a50d0e757deef68f3e5bd71bb80cf994036e/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-06-27 17:29:37 UTC
File Type:
ELF32 Little (Exe)
AV detection:
7 of 36 (19.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nxwcsntfyysmucklruysnf5fbuhhk7po62ht4w6xdo4az6muanxa._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/260627-v2cjyab13s/
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/6dec293665c624ca094b8d312697a50d0e757deef68f3e5bd71bb80cf994036e

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_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:Linux_Generic_Threat_d94e1020
Create hunting rule
Author:Elastic Security
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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

elf 6dec293665c624ca094b8d312697a50d0e757deef68f3e5bd71bb80cf994036e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3876990/
  
Delivery method
Distributed via web download

Comments