MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2081580b46e6903e856f457ee1511c1a89d571a2285e2f227308fafc402db71c. 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: 8


Intelligence 8 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2081580b46e6903e856f457ee1511c1a89d571a2285e2f227308fafc402db71c
SHA3-384 hash: cc460fd6e7a84f2e8df0e77c0058e8c49f40224167b99eb823109c4d416eee9719628313441836d96a7683031dec3c45
SHA1 hash: 752ea337bb50fdb53de3893188499abc73982d9f
MD5 hash: e24da9195399831f986432b6f5c766f7
humanhash: yankee-island-white-robin
File name:kworkerd-netns
Download: download sample
Signature Mirai
Create hunting rule
File size:403'812 bytes
First seen:2026-07-08 01:25:39 UTC
Last seen:2026-07-08 08:17:46 UTC
File type: elf
MIME type:application/x-executable
ssdeep 6144:UHhGHABxUR4fAGAPF83McRxccQ3TwCeiyTthE8SZuGHc9yWYfBxx+SuxQKt96snh:9gB+PFQ23aiyRhWlAyZ4xh1crH4XZ
TLSH T1A38422FB5823A4DBF296943579B3C628360C37867E422848BBBEADC10F2D5AC5D453C5
telfhash t192d00224587813b052cd8c6e55dceb08a860a5e7aaa31d1fdd94c899ea26e4b9d01d2c
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
5
# of downloads :
64
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Siggen.13370.14115.23487.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Connection attempt
Kills processes
Opens a port
Changes access rights for a written file
Receives data from a server
Changes the time when the file was created, accessed, or modified
Runs as daemon
Sets a written file as executable
Deleting a recently created file
Manages services
Collects information on the CPU
Creating a file
Sends data to a server
Launching a process
Creating a process from a recently created file
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Kills critical processes
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc
Link:
https://www.filescan.io/uploads/6a4da7387dd7eef7980a9237/reports/5b3e256d-a47d-42a4-ad3f-74bdca7a700a/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
custom
Botnet:
unknown
Number of open files:
0
Number of processes launched:
2
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/2081580b46e6903e856f457ee1511c1a89d571a2285e2f227308fafc402db71c
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-07-07T17:06:00Z UTC
Last seen:
2026-07-08T05:19:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/2081580b46e6903e856f457ee1511c1a89d571a2285e2f227308fafc402db71c/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/2dce8c9e-4407-4871-a7d8-3f49536793e1
Behavior Graph:
Download SVG
%3 guuid=f9eeac7a-1b00-0000-ff79-92ef360c0000 pid=3126 /usr/bin/sudo guuid=0309b17d-1b00-0000-ff79-92ef370c0000 pid=3127 /tmp/sample.bin guuid=f9eeac7a-1b00-0000-ff79-92ef360c0000 pid=3126->guuid=0309b17d-1b00-0000-ff79-92ef370c0000 pid=3127 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/88d90476-80d2-4316-80e4-60daa783f3eb
Result
Threat name:
Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1938988
Signature
Antivirus detection for dropped file
Drops invisible ELF files
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
Malicious sample detected (through community Yara rule)
Opens /sys/class/net/* files useful for querying network interface information
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: 1938988 Sample: kworkerd-netns.elf Startdate: 08/07/2026 Architecture: LINUX Score: 100 75 91.92.40.118, 443, 44466, 44468 TODYL-CLOUD-TodylIncUS Bulgaria 2->75 77 109.202.202.202, 80 INIT7CH Switzerland 2->77 79 3 other IPs or domains 2->79 83 Malicious sample detected (through community Yara rule) 2->83 85 Antivirus detection for dropped file 2->85 87 Yara detected Mirai 2->87 89 Yara detected Xmrig cryptocurrency miner 2->89 11 kworkerd-netns.elf 2->11         started        15 systemd sh 2->15         started        17 systemd snapd-env-generator 2->17         started        19 3 other processes 2->19 signatures3 process4 file5 73 /tmp/.6226, ELF 11->73 dropped 99 Drops invisible ELF files 11->99 101 Sample deletes itself 11->101 21 kworkerd-netns.elf .6226 11->21         started        24 sh sh 15->24         started        26 sh wget 15->26         started        29 sh rm 15->29         started        signatures6 process7 file8 91 Found strings related to Crypto-Mining 21->91 31 .6226 21->31         started        33 sh wget 24->33         started        37 sh .k 24->37         started        39 sh chmod 24->39         started        71 /tmp/..redis-sentinel, POSIX 26->71 dropped signatures9 process10 file11 41 .6226 31->41         started        67 /tmp/.k, ELF 33->67 dropped 81 Drops invisible ELF files 33->81 44 .k 37->44         started        signatures12 process13 signatures14 93 Opens /sys/class/net/* files useful for querying network interface information 41->93 46 .6226 sh 41->46         started        49 .6226 sh 41->49         started        51 .6226 sh 41->51         started        53 .6226 sh 41->53         started        55 .k 44->55         started        process15 signatures16 103 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 46->103 57 sh crontab 46->57         started        61 sh crontab 49->61         started        63 sh systemctl 51->63         started        65 sh systemctl 53->65         started        process17 file18 69 /var/spool/cron/crontabs/tmp.4exWbo, ASCII 57->69 dropped 95 Sample tries to persist itself using cron 57->95 97 Executes the "crontab" command typically for achieving persistence 57->97 signatures19
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/2081580b46e6903e856f457ee1511c1a89d571a2285e2f227308fafc402db71c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2081580b46e6903e856f457ee1511c1a89d571a2285e2f227308fafc402db71c/
Threat name:
Linux.Trojan.Multiverze
Create hunting rule
Status:
Malicious
First seen:
2026-07-07 20:07:00 UTC
File Type:
ELF32 Big (Exe)
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ecavqc2g42id5blpiv7ocui4dke5k4ncfbpc6ittbd5pyqbnw4oa._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/260708-btm6xshy2p/
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/2081580b46e6903e856f457ee1511c1a89d571a2285e2f227308fafc402db71c

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: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: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 2081580b46e6903e856f457ee1511c1a89d571a2285e2f227308fafc402db71c

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3883716/
  
Delivery method
Distributed via web download

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