MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef3c847353018e42ace6a8b183d5f93191a821311a536a3b30897aaefa0e52b6. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef3c847353018e42ace6a8b183d5f93191a821311a536a3b30897aaefa0e52b6
SHA3-384 hash: e2ee46c9fd46ea414247fe586777d58db06822fcb6d9569c1838587f89e4bca703e12bbe444b058c137167d98d20fd65
SHA1 hash: be17d1e23b7196e542c7173a04881406a88ae92d
MD5 hash: 05b8181dfc97dd6455224d10bed5d549
humanhash: robert-sodium-delaware-louisiana
File name:mipsel.uhavenobotsxd
Download: download sample
Signature Mirai
Create hunting rule
File size:131'224 bytes
First seen:2025-11-29 05:51:28 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:4EyN7Oeq6wx9Sa7cwTgq+VeAY6KIOOg2gy+edSjQsyA7QuRG2qVFY8c6:qgT6wjSa7cwTgRA7QupqU0
TLSH T15BD30809BB614EF7E86FCD3706E9070521CD655622B83B763A70E82CF15E28B1AD3974
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 :
1
# of downloads :
78
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-10001386-0
Create hunting rule

Unix.Trojan.Mirai-10010119-0
Create hunting rule

Unix.Trojan.Mirai-10010127-0
Create hunting rule

Unix.Trojan.Mirai-10017351-0
Create hunting rule

Unix.Trojan.Mirai-10017641-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Changes access rights for a written file
Connection attempt
Runs as daemon
Kills processes
Opens a port
Launching a process
Sends data to a server
Creating a process from a recently created file
Creating a file
Deleting a recently created file
Deletes a file
Changes the time when the file was created, accessed, or modified
Receives data from a server
Sets a written file as executable
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Writes files to system directory
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files to set up autorun
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
bash lolbin
Link:
https://www.filescan.io/uploads/692a8a0fd0d5e7288b502cb0/reports/a6a86278-3689-4ef5-a773-3d34bb22edd7/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-11-29T03:42:00Z UTC
Last seen:
2025-11-30T23:20:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/ef3c847353018e42ace6a8b183d5f93191a821311a536a3b30897aaefa0e52b6/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/4ecc2b03-37a3-419c-b025-08abf2d92c5d
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1822733
Signature
Drops files in suspicious directories
Drops invisible ELF files
Executes the "crontab" command typically for achieving persistence
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill a massive number of system processes
Sample tries to kill multiple processes (SIGKILL)
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Terminates several processes with shell command 'killall'
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1822733 Sample: mipsel.uhavenobotsxd.elf Startdate: 29/11/2025 Architecture: LINUX Score: 100 91 94.154.35.153, 59720, 6969 SELECTELRU Ukraine 2->91 93 151.243.93.88, 1337, 34568, 34570 RASANAIR Iran (ISLAMIC Republic Of) 2->93 95 11 other IPs or domains 2->95 97 Multi AV Scanner detection for submitted file 2->97 11 mipsel.uhavenobotsxd.elf 2->11         started        14 dash rm 2->14         started        16 dash rm 2->16         started        signatures3 process4 signatures5 123 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->123 18 mipsel.uhavenobotsxd.elf 11->18         started        process6 file7 79 /var/spool/cron/root, ASCII 18->79 dropped 81 /var/spool/cron/crontabs/root, ASCII 18->81 dropped 83 /root/.bashrc, ASCII 18->83 dropped 85 8 other files (7 malicious) 18->85 dropped 99 Sample tries to set files in /etc globally writable 18->99 101 Sample tries to persist itself using /etc/profile 18->101 103 Drops files in suspicious directories 18->103 105 4 other signatures 18->105 22 mipsel.uhavenobotsxd.elf sh 18->22         started        24 mipsel.uhavenobotsxd.elf sh 18->24         started        26 mipsel.uhavenobotsxd.elf sh 18->26         started        28 43 other processes 18->28 signatures8 process9 signatures10 31 sh .monitor 22->31         started        33 sh S99network 24->33         started        35 sh crontab 26->35         started        39 sh 26->39         started        125 Sample tries to kill a massive number of system processes 28->125 127 Sample tries to kill multiple processes (SIGKILL) 28->127 41 sh cp 28->41         started        43 mipsel.uhavenobotsxd.elf sh 28->43         started        45 sh rm 28->45         started        47 41 other processes 28->47 process11 file12 49 .monitor 31->49         started        51 S99network 33->51         started        87 /var/spool/cron/crontabs/tmp.vceRCI, ASCII 35->87 dropped 107 Sample tries to persist itself using cron 35->107 109 Executes the "crontab" command typically for achieving persistence 35->109 53 sh crontab 39->53         started        89 /usr/bin/.update, ELF 41->89 dropped 111 Drops invisible ELF files 41->111 113 Drops files in suspicious directories 41->113 56 sh .update 43->56         started        115 Sample deletes itself 45->115 117 Terminates several processes with shell command 'killall' 47->117 58 sh .update 47->58         started        60 sh .update 47->60         started        signatures13 process14 signatures15 62 .monitor .update 49->62         started        65 .monitor .update 49->65         started        67 .monitor .update 49->67         started        75 101 other processes 49->75 69 S99network .update 51->69         started        71 S99network .update 51->71         started        73 S99network .update 51->73         started        77 41 other processes 51->77 119 Executes the "crontab" command typically for achieving persistence 53->119 121 Sample reads /proc/mounts (often used for finding a writable filesystem) 56->121 process16 signatures17 129 Sample reads /proc/mounts (often used for finding a writable filesystem) 69->129
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/ef3c847353018e42ace6a8b183d5f93191a821311a536a3b30897aaefa0e52b6
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef3c847353018e42ace6a8b183d5f93191a821311a536a3b30897aaefa0e52b6/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-29 05:52:16 UTC
File Type:
ELF32 Little (Exe)
AV detection:
18 of 38 (47.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=546ii42tagheflhgvcyyhvpzggi2qijrdjjwuozqrf5k56qokk3a._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/251129-gktv1awjam/
Behaviour
Reads runtime system information
System Network Configuration Discovery
Writes file to shm directory
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Deletes log files
Enumerates running processes
Modifies init.d
Modifies rc script
Write file to user bin folder
Executes dropped EXE
Creates a large amount of network flows
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/73cacb2e-24da-41b9-a543-0df1273312f5
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/ef3c847353018e42ace6a8b183d5f93191a821311a536a3b30897aaefa0e52b6

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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
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 ef3c847353018e42ace6a8b183d5f93191a821311a536a3b30897aaefa0e52b6

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3686381/
  
Delivery method
Distributed via web download

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