MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40cb9b33a953cb7c415d91e8cc9e73053dffc060f213ca4c9ad233d9ae1d399d. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 40cb9b33a953cb7c415d91e8cc9e73053dffc060f213ca4c9ad233d9ae1d399d
SHA3-384 hash: b983618a565191286b5c7e5a6d67c3146a02cf4443b77b2661d600a2c132172a1d2e236f92e4d044476c49abf9d09312
SHA1 hash: 9baed7f3b6f20c5349f3920d6dce348452e37d84
MD5 hash: 2a1bc55ee69e89c8a632736bd408b4e0
humanhash: jupiter-failed-angel-quebec
File name:ub8ehJSePAfc9FYqZIT6.i686
Download: download sample
Signature Mirai
Create hunting rule
File size:39'940 bytes
First seen:2026-01-21 07:31:55 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 768:f0ring4DeWeCDEgF+ZL/Qhf1kYeluOVzOxtmIatQDmqEx7Le/Gx6nbcuyD7UHQR+:fci+WJjF0DQfkBluIYSKmqV+Qnouy8H5
TLSH T14C03F1B2E2995E68D87BC33688CA728A0464834671605CA753CD547F6C23B714B6DAC6
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 UPX
File size (compressed) :39'940 bytes
File size (de-compressed) :97'736 bytes
Format:linux/i386
Unpacked file: bd60405fe30e29f984e0dbc4a02783558e146ac4feaf431c116345d12b62bb75

Intelligence

File Origin
# of uploads :
1
# of downloads :
42
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/11a3ab09-68e2-4544-b8af-8d7d9698025d/
Detection(s):
Unix.Dropper.Mirai-7135858-0
Create hunting rule

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
masquerade packed upx
Link:
https://www.filescan.io/uploads/697081125db9ae47708b5834/reports/595917b4-186e-493b-98fc-2852743c727a/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
UPX
Botnet:
unknown
Number of open files:
4
Number of processes launched:
5
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/40cb9b33a953cb7c415d91e8cc9e73053dffc060f213ca4c9ad233d9ae1d399d
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-21T05:25:00Z UTC
Last seen:
2026-01-21T08:44:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/40cb9b33a953cb7c415d91e8cc9e73053dffc060f213ca4c9ad233d9ae1d399d/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/0b1ba4ea-5517-44ca-8654-94ef6d490e71
Behavior Graph:
Download SVG
%3 guuid=44cb0f43-2200-0000-dd74-3056b7080000 pid=2231 /usr/bin/sudo guuid=e6e9c046-2200-0000-dd74-3056c1080000 pid=2241 /tmp/sample.bin delete-file net guuid=44cb0f43-2200-0000-dd74-3056b7080000 pid=2231->guuid=e6e9c046-2200-0000-dd74-3056c1080000 pid=2241 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=e6e9c046-2200-0000-dd74-3056c1080000 pid=2241->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=2f3c9e47-2200-0000-dd74-3056c4080000 pid=2244 /tmp/sample.bin guuid=e6e9c046-2200-0000-dd74-3056c1080000 pid=2241->guuid=2f3c9e47-2200-0000-dd74-3056c4080000 pid=2244 clone guuid=1efe4883-2200-0000-dd74-3056fb080000 pid=2299 /tmp/sample.bin guuid=e6e9c046-2200-0000-dd74-3056c1080000 pid=2241->guuid=1efe4883-2200-0000-dd74-3056fb080000 pid=2299 clone guuid=43e700bf-2200-0000-dd74-30565f090000 pid=2399 /tmp/sample.bin guuid=e6e9c046-2200-0000-dd74-3056c1080000 pid=2241->guuid=43e700bf-2200-0000-dd74-30565f090000 pid=2399 clone guuid=c8d90abf-2200-0000-dd74-305660090000 pid=2400 /tmp/sample.bin dns net send-data zombie guuid=e6e9c046-2200-0000-dd74-3056c1080000 pid=2241->guuid=c8d90abf-2200-0000-dd74-305660090000 pid=2400 clone guuid=c8d90abf-2200-0000-dd74-305660090000 pid=2400->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con 4f6baed0-9587-596c-82b3-fd721afe4cc1 10.0.2.3:53 guuid=c8d90abf-2200-0000-dd74-305660090000 pid=2400->4f6baed0-9587-596c-82b3-fd721afe4cc1 send: 1748B 3ec2bfaf-8e71-5eeb-b8ce-6ffe78958b80 weifang.serveftp.com:3778 guuid=c8d90abf-2200-0000-dd74-305660090000 pid=2400->3ec2bfaf-8e71-5eeb-b8ce-6ffe78958b80 send: 230B
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/17bde32d-1115-4e36-be50-3bcaf8069232
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1854591
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/40cb9b33a953cb7c415d91e8cc9e73053dffc060f213ca4c9ad233d9ae1d399d
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/40cb9b33a953cb7c415d91e8cc9e73053dffc060f213ca4c9ad233d9ae1d399d/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-21 07:32:43 UTC
File Type:
ELF32 Little (Exe)
AV detection:
16 of 36 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=idfzwm5jkpfxyqk5shumzhttau677qda6ij4ute22iz5tlq5hgoq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion linux upx
Link:
https://tria.ge/reports/260121-jc8ejacs7e/
Behaviour
Writes file to tmp directory
Changes its process name
Writes file to system bin folder
Modifies Watchdog functionality
Mirai
Mirai family
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_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

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

Web download

Mirai

elf 40cb9b33a953cb7c415d91e8cc9e73053dffc060f213ca4c9ad233d9ae1d399d

(this sample)

Mirai

elf bd60405fe30e29f984e0dbc4a02783558e146ac4feaf431c116345d12b62bb75

  
URLhaus
https://urlhaus.abuse.ch/url/3753590/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3759497/
  
Dropping
SHA256 bd60405fe30e29f984e0dbc4a02783558e146ac4feaf431c116345d12b62bb75
  
Dropping
MD5 d3b0153eef66223c1b7a245b1a5e9216
  
URLhaus
https://urlhaus.abuse.ch/url/3760893/

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