MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81c9e99a1341c5dbd407da4ce016ef8705d5faa7aeb6d6526dd6e3997bafc38d. 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: 5


Intelligence 5 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81c9e99a1341c5dbd407da4ce016ef8705d5faa7aeb6d6526dd6e3997bafc38d
SHA3-384 hash: 3265f7450ae3ce98e262692a5e4514ba3bad1fe6b1eef42eab2a70b61c6c646a845dbe44513986fff7c56cbf73183490
SHA1 hash: f34e691f2dadbae691bdbc7dc6acbbd54532bc45
MD5 hash: ccd5679152dc55eb8afca4ff568e1846
humanhash: lemon-tennessee-bakerloo-hawaii
File name:main.riscv64
Download: download sample
Signature Mirai
Create hunting rule
File size:42'216 bytes
First seen:2026-08-09 14:54:01 UTC
Last seen:2026-08-10 14:28:14 UTC
File type: elf
MIME type:application/x-executable
ssdeep 768:+PwPrGu/c9RGVeyEsr36dDXoNqgGPrQZBy2U4W4bo/5:xxcPh1O6llgGkZBro
TLSH T14A131A828D218314C6F512BC57F54A59E3C15E0739DB2701CA72FB387DAD0A8BA93DDA
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 :
3
# of downloads :
61
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc
Link:
https://www.filescan.io/uploads/6a7894ac750d670a1ccb6390/reports/648e73e6-cf30-47de-b254-95ce3886a843/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-08-10T21:22:00Z UTC
Last seen:
2026-08-10T22:17:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/81c9e99a1341c5dbd407da4ce016ef8705d5faa7aeb6d6526dd6e3997bafc38d/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/3b437429-8c69-4a5d-93ee-9647ef10c0c1
Behavior Graph:
Download SVG
%3 guuid=ea842b29-1a00-0000-bf70-f470bd060000 pid=1725 /usr/bin/sudo guuid=a6d1662b-1a00-0000-bf70-f470c2060000 pid=1730 /tmp/sample.bin guuid=ea842b29-1a00-0000-bf70-f470bd060000 pid=1725->guuid=a6d1662b-1a00-0000-bf70-f470c2060000 pid=1730 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b5eca329-c369-43f6-ba0b-aa632051c3f0
Result
Threat name:
n/a
Detection:
clean
Classification:
n/a
Score:
2 / 100
Link:
https://www.joesandbox.com/analysis/1954666
Behaviour
Behavior Graph:
n/a
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/81c9e99a1341c5dbd407da4ce016ef8705d5faa7aeb6d6526dd6e3997bafc38d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81c9e99a1341c5dbd407da4ce016ef8705d5faa7aeb6d6526dd6e3997bafc38d/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-09 14:54:39 UTC
File Type:
ELF64 Little (Exe)
AV detection:
4 of 24 (16.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhe6tgqtihc5xvah3jgoafxpq4c5l6vhv23nmutn23rzs65pyogq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260809-r9353szfpg/
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/81c9e99a1341c5dbd407da4ce016ef8705d5faa7aeb6d6526dd6e3997bafc38d

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: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 81c9e99a1341c5dbd407da4ce016ef8705d5faa7aeb6d6526dd6e3997bafc38d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3897941/
  
Delivery method
Distributed via web download

Comments