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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9f81839b349bf6aa8ab6a325151bdf078fae53e10a52f14f8ab0d5b36544c7bb. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9f81839b349bf6aa8ab6a325151bdf078fae53e10a52f14f8ab0d5b36544c7bb
SHA3-384 hash: 1d4534c6349c3cc30c1c1d1b5037e475f31cedaa8068859b21b434965ce7b66254bda2f253203c16c32a785d1f05ee54
SHA1 hash: 888594ab8fd705be36f694d0ba1a03f7aa8ccf8e
MD5 hash: 4a982489068796a84a934058c4eba8b1
humanhash: william-juliet-lake-alabama
File name:eOF1
Download: download sample
Signature Mirai
Create hunting rule
File size:71'692 bytes
First seen:2026-07-21 08:25:09 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:NOn0eOJkjG+6K/rCj80gnIOle5zDq3VKHU5MABIiA9XyrvEYw7F:JeOJkj95rg8Ve/QKHUri9Xyrv
TLSH T17D630967B9418F19C5C5167AFF1E934D331327B8E3DEB213EE142B64278B96B0E2A405
telfhash t19801ce304a8659dc9bd0c10b12ef1246551cf2f133201d6db7e9dadb95c3469f31642d
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 :
99
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Other.Malware-gen.21622629.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Manages services
Launching a process
Creating a file
Sends data to a server
Collects information on the RAM
Connection attempt
Receives data from a server
Kills processes
Sets a written file as executable
Runs as daemon
Deleting a recently created file
Collects information on the CPU
Deletes a system binary file
Writes symbolic links to system directory
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
rust
Link:
https://www.filescan.io/uploads/6a5f2d28acd66b003b03821e/reports/2a3c45b2-7637-4bc3-b7a2-01b316b57ecb/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
91
Number of processes launched:
9
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/9f81839b349bf6aa8ab6a325151bdf078fae53e10a52f14f8ab0d5b36544c7bb
Behaviour
Persistence
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-07-21T05:45:00Z UTC
Last seen:
2026-07-22T18:35:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/9f81839b349bf6aa8ab6a325151bdf078fae53e10a52f14f8ab0d5b36544c7bb/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/dbb1f9e6-1068-4660-b645-ed66140bf7d1
Behavior Graph:
Download SVG
%3 guuid=08caf1cd-2900-0000-1169-15f53d030000 pid=829 /usr/bin/sudo guuid=fddda2d1-2900-0000-1169-15f53e030000 pid=830 /tmp/sample.bin guuid=08caf1cd-2900-0000-1169-15f53d030000 pid=829->guuid=fddda2d1-2900-0000-1169-15f53e030000 pid=830 execve
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/85727f72-5c9c-4821-939f-0830c789dcb0
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1945726
Signature
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1945726 Sample: eOF1.elf Startdate: 21/07/2026 Architecture: LINUX Score: 68 42 129.121.110.105, 4621, 50636 ORACLE-BMC-31898-OracleCorporationUS United States 2->42 44 Multi AV Scanner detection for submitted file 2->44 10 eOF1.elf 2->10         started        12 systemd snapd-env-generator 2->12         started        14 systemd snapd-env-generator 2->14         started        16 6 other processes 2->16 signatures3 process4 process5 18 eOF1.elf 10->18         started        process6 20 eOF1.elf 18->20         started        process7 22 eOF1.elf 20->22         started        26 eOF1.elf 20->26         started        28 eOF1.elf 20->28         started        30 5 other processes 20->30 file8 36 /etc/rc.local, POSIX 22->36 dropped 38 /etc/crontab, ASCII 22->38 dropped 40 /etc/cron.d/crond, ASCII 22->40 dropped 46 Sample tries to set files in /etc globally writable 22->46 48 Sample reads /proc/mounts (often used for finding a writable filesystem) 22->48 50 Sample tries to persist itself using cron 22->50 52 Sample tries to persist itself using System V runlevels 22->52 32 eOF1.elf systemctl 22->32         started        34 eOF1.elf systemctl 22->34         started        54 Sample tries to kill multiple processes (SIGKILL) 26->54 signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/9f81839b349bf6aa8ab6a325151bdf078fae53e10a52f14f8ab0d5b36544c7bb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9f81839b349bf6aa8ab6a325151bdf078fae53e10a52f14f8ab0d5b36544c7bb/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-07-21 08:27:25 UTC
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=t6ayhgzutp3kvcvwumsrkg67a6h24u7bbjjpct4kwdk3gzkey65q._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
antivm discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/260721-kbqzjaay6r/
Behaviour
Reads runtime system information
Checks CPU configuration
Creates/modifies Cron job
Enumerates running processes
Modifies rc script
Modifies systemd
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/9f81839b349bf6aa8ab6a325151bdf078fae53e10a52f14f8ab0d5b36544c7bb

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_Threat_d2dca9e7
Create hunting rule
Author:Elastic Security
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 9f81839b349bf6aa8ab6a325151bdf078fae53e10a52f14f8ab0d5b36544c7bb

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3889608/
  
Delivery method
Distributed via web download

Comments