MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4c8f6e0ccf151f765084e5d0bde25e2370ba4188b8d6d6b4a96242ef15cb84b. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4c8f6e0ccf151f765084e5d0bde25e2370ba4188b8d6d6b4a96242ef15cb84b
SHA3-384 hash: 5456885f6ba5a8e569dccf4966e382030be3f87612b32d8040b63da80197a82ef9bcb9e057f435f7926a9967c0bf052e
SHA1 hash: a15648376f561671642dabe043937d8ada096875
MD5 hash: 00837c92cad7cd5eb1691e4d6aee6fb6
humanhash: pluto-juliet-magnesium-mexico
File name:nklsh4
Download: download sample
Signature Mirai
Create hunting rule
File size:85'532 bytes
First seen:2026-01-27 11:34:40 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:Dl4faiqaEs+TVUkOigWe0lIJBJZvoqyLWRCCCXBXTTX:DlUax0+TVUBigt0WJf9oSRCC2R3X
TLSH T129837D168C75ADD8F07A6E7060B5C9FB9313A449984F6CBB3843C325501BE88F5E6BB4
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 :
65
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Dropper.Mirai-7136288-0
Create hunting rule

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

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6978a309a57b6af70d0e8d94/reports/5a0056dd-f6f7-4225-bf98-70ae7d0f1452/overview
Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/21df63d6-c084-4d28-80e6-48814c55cfc8
Behavior Graph:
Download SVG
%3 guuid=e43edbe6-1900-0000-93ac-9f18660c0000 pid=3174 /usr/bin/sudo guuid=275e78ea-1900-0000-93ac-9f18670c0000 pid=3175 /tmp/sample.bin guuid=e43edbe6-1900-0000-93ac-9f18660c0000 pid=3174->guuid=275e78ea-1900-0000-93ac-9f18670c0000 pid=3175 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/e497d47c-8c5e-4be3-b891-fb0cfd2a351b
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1858235
Signature
Connects to many IPs within the same subnet mask (likely port scanning)
Drops invisible ELF files
Multi AV Scanner detection for submitted file
Sample deletes itself
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1858235 Sample: nklsh4.elf Startdate: 27/01/2026 Architecture: LINUX Score: 60 24 45.248.232.22 SKYSIKAR-ASSKYLINEINFONETPRIVATELIMITEDIN China 2->24 26 45.248.232.23 SKYSIKAR-ASSKYLINEINFONETPRIVATELIMITEDIN China 2->26 28 100 other IPs or domains 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Connects to many IPs within the same subnet mask (likely port scanning) 2->32 8 nklsh4.elf .acpid 2->8         started        12 dash rm 2->12         started        14 dash head 2->14         started        16 8 other processes 2->16 signatures3 process4 file5 22 /dev/shm/.acpid, ELF 8->22 dropped 34 Drops invisible ELF files 8->34 36 Sample deletes itself 8->36 18 .acpid 8->18         started        signatures6 process7 process8 20 .acpid 18->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/f4c8f6e0ccf151f765084e5d0bde25e2370ba4188b8d6d6b4a96242ef15cb84b
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f4c8f6e0ccf151f765084e5d0bde25e2370ba4188b8d6d6b4a96242ef15cb84b/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6tepnygm6fi7oziijzoqxxrf4i3qxjayrogw222ksysc54k4xbfq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260127-nqcbgact4b/
Please note that we are no longer able to provide a coverage score for Virus Total.

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 f4c8f6e0ccf151f765084e5d0bde25e2370ba4188b8d6d6b4a96242ef15cb84b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3740370/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3739237/

Comments