MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7ff53dfb91ced1b64d359b5e2c5220b42595455addd5af6a05b1641c6420453. 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: 7


Intelligence 7 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a7ff53dfb91ced1b64d359b5e2c5220b42595455addd5af6a05b1641c6420453
SHA3-384 hash: 4808f578c1fcf733eac6fe500b2f3c319b0cf8d0eefbade4f1052a20e984f5fefd5ab93bdc929b077ae7f673a5a747d8
SHA1 hash: 2dc7eadf2a46953b5551a89029feed26ff984349
MD5 hash: d3afd7a27607dd8e861ae0806209d1d7
humanhash: may-golf-single-magazine
File name:nklsh4
Download: download sample
Signature Mirai
Create hunting rule
File size:54'136 bytes
First seen:2025-12-30 19:24:28 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:VaWwtP3ElLhH89fhTQKcRCtUnLreiCzguM7R:VhUEHE5TQKcRTnneiHuM
TLSH T18C337C66D17AEDD8C19901B4A8718AB51F53B205D2132FFB1B84D9668083EBCF60D3F5
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 :
81
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.31075.LX.BOT.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-7755770-0
Create hunting rule

Unix.Trojan.Mirai-9885259-0
Create hunting rule

Unix.Trojan.Mirai-10008934-0
Create hunting rule

Unix.Trojan.Gafgyt-6735924-0
Create hunting rule

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6954271e2fb7bb52ca828232/reports/807f2d9a-1e59-49a0-a0a2-4772fdc11eac/overview
Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/0b300256-bddc-42d6-b1d8-51a6475ec433
Behavior Graph:
Download SVG
%3 guuid=45ce10ae-1b00-0000-a318-e5a9c2090000 pid=2498 /usr/bin/sudo guuid=e8d891b0-1b00-0000-a318-e5a9c8090000 pid=2504 /tmp/sample.bin guuid=45ce10ae-1b00-0000-a318-e5a9c2090000 pid=2498->guuid=e8d891b0-1b00-0000-a318-e5a9c8090000 pid=2504 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/d2663df7-43c2-453e-a040-bb9b3b3d73fa
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1842264
Signature
Connects to many IPs within the same subnet mask (likely port scanning)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1842264 Sample: nklsh4.elf Startdate: 30/12/2025 Architecture: LINUX Score: 60 18 102.212.135.180, 23 CKL1-ASNKE unknown 2->18 20 111.126.239.202 CHINANET-BACKBONENo31Jin-rongStreetCN China 2->20 22 100 other IPs or domains 2->22 24 Multi AV Scanner detection for submitted file 2->24 26 Yara detected Mirai 2->26 28 Connects to many IPs within the same subnet mask (likely port scanning) 2->28 8 nklsh4.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        signatures3 process4 process5 14 nklsh4.elf 8->14         started        process6 16 nklsh4.elf 14->16         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a7ff53dfb91ced1b64d359b5e2c5220b42595455addd5af6a05b1641c6420453
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a7ff53dfb91ced1b64d359b5e2c5220b42595455addd5af6a05b1641c6420453/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-30 19:25:19 UTC
File Type:
ELF32 Little (Exe)
AV detection:
10 of 36 (27.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u77vhx5zdtwrwzgtlg26frjcbnbfsvcvvxovv5valmledrscarjq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/251230-x4s1tavqbl/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-7755770-0
YARA:
n/a
Link:
https://app.threat.zone/submission/6abcf421-8e92-4455-8d49-49e53257e13a
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/a7ff53dfb91ced1b64d359b5e2c5220b42595455addd5af6a05b1641c6420453

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 a7ff53dfb91ced1b64d359b5e2c5220b42595455addd5af6a05b1641c6420453

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3739237/
  
Delivery method
Distributed via web download

Comments