MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cc3fb9ce4d4134872205a9fef65f9e4e3b8bf2a9475bc7dfe928b7782c94f691. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cc3fb9ce4d4134872205a9fef65f9e4e3b8bf2a9475bc7dfe928b7782c94f691
SHA3-384 hash: 98e57fa883c616a5646c1c7892012d0b638e75e7ce4f78c4c09d0f5f5e106962d468d40ae9327e26c531d99c29608c9a
SHA1 hash: 1e56e37dbb9a5bb4534d302af62ac6f6cee58dcd
MD5 hash: 15970726a570e73498b1ae169f0003c1
humanhash: eight-arkansas-violet-speaker
File name:kworkerd-netns
Download: download sample
Signature Mirai
Create hunting rule
File size:450'804 bytes
First seen:2026-07-14 05:39:33 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 12288:J3++32Ve2jamkBJvLqKvk6tjelrPf7N3KXw+m7wpoLYH:ZSe2nca6tjcnlKX7eSoLYH
TLSH T15DA4234DD083B86EE1088536DFB7CDFE36AC2F123793D508D17CAA811ED95A5A1887E0
telfhash t192d00224587813b052cd8c6e55dceb08a860a5e7aaa31d1fdd94c899ea26e4b9d01d2c
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
68
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Siggen.13370.6527.8612.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Opens a port
Launching a process
Sets a written file as executable
Sends data to a server
Runs as daemon
Kills processes
Collects information on the CPU
Connection attempt
Changes access rights for a written file
Creating a file in the %temp% directory
Creating a process from a recently created file
Manages services
Deleting a recently created file
Receives data from a server
Changes the time when the file was created, accessed, or modified
Creates or modifies files in /cron to set up autorun
Kills critical processes
Substitutes an application name
Creates or modifies files to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc
Link:
https://www.filescan.io/uploads/6a55cbdbc1b5a62b4956b226/reports/4412004f-f368-4095-a2f9-405728c08306/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/cc3fb9ce4d4134872205a9fef65f9e4e3b8bf2a9475bc7dfe928b7782c94f691
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:
2026-07-14T00:08:00Z UTC
Last seen:
2026-07-14T02:30:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/cc3fb9ce4d4134872205a9fef65f9e4e3b8bf2a9475bc7dfe928b7782c94f691/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/4fa35adc-3267-4e69-ab2b-562bb74294bd
Behavior Graph:
Download SVG
%3 guuid=6fb7d69c-1900-0000-e770-1bd7c10f0000 pid=4033 /usr/bin/sudo guuid=0443e59e-1900-0000-e770-1bd7c80f0000 pid=4040 /tmp/sample.bin guuid=6fb7d69c-1900-0000-e770-1bd7c10f0000 pid=4033->guuid=0443e59e-1900-0000-e770-1bd7c80f0000 pid=4040 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/f547f453-b5fc-4754-9977-726cfbc9fa73
Result
Threat name:
Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1941949
Signature
Antivirus detection for dropped file
Drops files in suspicious directories
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)
Multi AV Scanner detection for submitted file
Opens /sys/class/net/* files useful for querying network interface information
Sample deletes itself
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using cron
Sample tries to set files in /etc globally writable
Yara detected Mirai
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1941949 Sample: kworkerd-netns.elf Startdate: 14/07/2026 Architecture: LINUX Score: 100 82 91.92.40.118, 443, 44472, 44474 TODYL-CLOUD-TodylIncUS Bulgaria 2->82 84 109.202.202.202, 80 INIT7CH Switzerland 2->84 86 3 other IPs or domains 2->86 90 Malicious sample detected (through community Yara rule) 2->90 92 Antivirus detection for dropped file 2->92 94 Multi AV Scanner detection for submitted file 2->94 96 2 other signatures 2->96 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 80 /tmp/.6254, ELF 11->80 dropped 112 Drops invisible ELF files 11->112 114 Sample deletes itself 11->114 21 kworkerd-netns.elf .6254 11->21         started        24 sh sh 15->24         started        26 sh wget 15->26         started        29 sh rm 15->29         started        signatures6 process7 file8 98 Found strings related to Crypto-Mining 21->98 31 .6254 21->31         started        33 sh wget 24->33         started        37 sh .k 24->37         started        39 sh chmod 24->39         started        76 /tmp/..redis-sentinel, POSIX 26->76 dropped signatures9 process10 file11 41 .6254 31->41         started        70 /tmp/.k, ELF 33->70 dropped 88 Drops invisible ELF files 33->88 45 .k 37->45         started        signatures12 process13 file14 72 /etc/profile.d/red...aof-rewrite-xlsc.sh, ASCII 41->72 dropped 74 /etc/init.d/redis-...ck aof-rewrite-bhvn, POSIX 41->74 dropped 100 Sample tries to set files in /etc globally writable 41->100 102 Opens /sys/class/net/* files useful for querying network interface information 41->102 104 Sample tries to persist itself using /etc/profile 41->104 106 Drops files in suspicious directories 41->106 47 .6254 sh 41->47         started        50 .6254 sh 41->50         started        52 .6254 sh 41->52         started        56 2 other processes 41->56 54 .k 45->54         started        signatures15 process16 signatures17 116 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 47->116 58 sh crontab 47->58         started        62 sh crontab 50->62         started        64 sh systemctl 52->64         started        66 sh systemctl 56->66         started        68 sh update-rc.d 56->68         started        process18 file19 78 /var/spool/cron/crontabs/tmp.vjCNdf, ASCII 58->78 dropped 108 Sample tries to persist itself using cron 58->108 110 Executes the "crontab" command typically for achieving persistence 58->110 signatures20
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/cc3fb9ce4d4134872205a9fef65f9e4e3b8bf2a9475bc7dfe928b7782c94f691
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cc3fb9ce4d4134872205a9fef65f9e4e3b8bf2a9475bc7dfe928b7782c94f691/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zq73ttsnie2ioiqfvh7pmx46jy5yx4vji5n4px7jfc3xqleu62iq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/260714-gc8zysex7k/
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/cc3fb9ce4d4134872205a9fef65f9e4e3b8bf2a9475bc7dfe928b7782c94f691

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 cc3fb9ce4d4134872205a9fef65f9e4e3b8bf2a9475bc7dfe928b7782c94f691

(this sample)

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

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