MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4c5d10e0484cc0b3005ba65e1499780acb68a18b476f846bc8fce1d318f07bf. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4c5d10e0484cc0b3005ba65e1499780acb68a18b476f846bc8fce1d318f07bf
SHA3-384 hash: 9f6a04e1e0a337aa8b88390294fe8fe059f34b4ef4bf06217792f372f87a0733399fadc9992b00f343acce512cf099f2
SHA1 hash: 00a001b4f3160cd4eed9ad051048b321006ce75c
MD5 hash: 1269c3fae676c77acdfe168c1ad8e1fd
humanhash: wolfram-golf-white-undress
File name:.modprobe
Download: download sample
Signature Mirai
Create hunting rule
File size:148'472 bytes
First seen:2025-08-03 07:20:21 UTC
Last seen:2025-08-21 09:30:17 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:djMuclcOTWU8jEqNv7wG6BQTxogNWKhPie2zqyegjeJvAgpu2WFGpr7qcymi/Jvt:9MTTWUq+ZBQTxQs2qGj1gcyozEY
TLSH T170E34C02770C0D43E2532EF03B3F27E193DF969521E4FA44655FAA8A91B1E32198ADDD
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
4
# of downloads :
39
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Dropper.Mirai-7135957-0
Create hunting rule

Unix.Trojan.Mirai-9940367-0
Create hunting rule

Unix.Trojan.Mirai-10012200-0
Create hunting rule

Unix.Trojan.Mirai-10012671-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Sets a written file as executable
Receives data from a server
Launching a process
Connection attempt
DNS request
Kills processes
Runs as daemon
Substitutes an application name
Writes files to system directory
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
bash lolbin obfuscated remote
Link:
https://www.filescan.io/uploads/688f0dbfdc44c87d077af1c6/reports/dd2bd0c6-8435-4205-9ee2-1b898b8e125f/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/61ee0ae9-3ec7-4b86-947a-07cb2bf7b82d
Behavior Graph:
Download SVG
%3 guuid=582050a9-1900-0000-51b0-23f642080000 pid=2114 /usr/bin/sudo guuid=02d5a7ac-1900-0000-51b0-23f64b080000 pid=2123 /tmp/sample.bin guuid=582050a9-1900-0000-51b0-23f642080000 pid=2114->guuid=02d5a7ac-1900-0000-51b0-23f64b080000 pid=2123 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/32acbdad-2bf8-4e25-9e1f-4150a1999569
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1749355
Signature
Drops files in suspicious directories
Drops invisible ELF files
Multi AV Scanner detection for submitted file
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Sends malformed DNS queries
Uses dynamic DNS services
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1749355 Sample: .modprobe.elf Startdate: 03/08/2025 Architecture: LINUX Score: 72 38 top1miku.duckdns.org. [malformed] 2->38 40 top1miku.duckdns.org 2->40 42 3 other IPs or domains 2->42 44 Multi AV Scanner detection for submitted file 2->44 10 .modprobe.elf 2->10         started        12 gnome-session-binary sh gsd-rfkill 2->12         started        14 gdm3 Default 2->14         started        16 3 other processes 2->16 signatures3 46 Sends malformed DNS queries 38->46 48 Uses dynamic DNS services 40->48 process4 process5 18 .modprobe.elf 10->18         started        20 .modprobe.elf 10->20         started        process6 22 .modprobe.elf 18->22         started        file7 34 /etc/init.d/sysd, POSIX 22->34 dropped 50 Sample tries to set files in /etc globally writable 22->50 52 Drops files in suspicious directories 22->52 54 Sample tries to persist itself using System V runlevels 22->54 26 .modprobe.elf sh 22->26         started        28 .modprobe.elf 22->28         started        signatures8 process9 process10 30 sh cp 26->30         started        file11 36 /usr/bin/.sh, ELF 30->36 dropped 56 Drops invisible ELF files 30->56 58 Drops files in suspicious directories 30->58 signatures12
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a4c5d10e0484cc0b3005ba65e1499780acb68a18b476f846bc8fce1d318f07bf
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4c5d10e0484cc0b3005ba65e1499780acb68a18b476f846bc8fce1d318f07bf/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-08-03 05:43:15 UTC
File Type:
ELF32 Big (Exe)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=utc5cdqeqtgawmafxjs6csmxqcwlncqywr3pqrv4r7hb2mmpa67q._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai linux
Link:
https://tria.ge/reports/250803-h6b3raysey/
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7135957-0
YARA:
n/a
Link:
https://app.threat.zone/submission/f209970a-2b3e-4860-aa70-c0cac789b3ae
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/a4c5d10e0484cc0b3005ba65e1499780acb68a18b476f846bc8fce1d318f07bf

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: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 a4c5d10e0484cc0b3005ba65e1499780acb68a18b476f846bc8fce1d318f07bf

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3595557/
  
Delivery method
Distributed via web download

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