MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 257225c983ed6adab97e8a4e3fdf60057ff0d227aaf0c88801210ad9b5ee66f5. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 257225c983ed6adab97e8a4e3fdf60057ff0d227aaf0c88801210ad9b5ee66f5
SHA3-384 hash: 09c1553931a7c5f5a8e4b5551a11a1c7143496ae022574d81deb26ad6e872546beaf4c2370b92a62fee016fbbd0528d1
SHA1 hash: 9b0ef01f07283d2a2d7900a1a9cb63f270ff7fee
MD5 hash: 7c6c8751b93804692107da76599e561a
humanhash: ink-massachusetts-hydrogen-eight
File name:jklarm7
Download: download sample
Signature Mirai
Create hunting rule
File size:116'980 bytes
First seen:2026-01-25 23:23:46 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:dpSyp2EtW1myEtLfezviSlukeoQ6Qb30vgyV0ZUQz4KxX:by1icviSluLb30vgyiZUQcK
TLSH T160B31989BC859B11D5D525BAFE0E518D33138FB8E3FA7113DE185B2A538E85B0B3B901
telfhash t1b0f05522dd8c505dbfc4122c50bd5027526d74ec3a703ad2243ede8f8ab6ec5312881b
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
53
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Trojan.Mirai-9885259-0
Create hunting rule

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
rust
Link:
https://www.filescan.io/uploads/6976a62955805a763ff5725d/reports/51f1f470-ebe3-4954-9660-e283294c4f80/overview
Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/83d352b3-b5a7-4a70-962d-773dcf736eff
Behavior Graph:
Download SVG
%3 guuid=54e6de24-1b00-0000-91cf-517a8e0b0000 pid=2958 /usr/bin/sudo guuid=0795f727-1b00-0000-91cf-517a960b0000 pid=2966 /tmp/sample.bin guuid=54e6de24-1b00-0000-91cf-517a8e0b0000 pid=2958->guuid=0795f727-1b00-0000-91cf-517a960b0000 pid=2966 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8347f703-63b1-430f-9242-a72a2636ee36
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1857300
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
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1857300 Sample: jklarm7.elf Startdate: 26/01/2026 Architecture: LINUX Score: 68 58 61.72.209.12 SANGMYUNG-AS-KRSangmyungUniversityKR Korea Republic of 2->58 60 61.72.209.15 SANGMYUNG-AS-KRSangmyungUniversityKR Korea Republic of 2->60 62 100 other IPs or domains 2->62 66 Multi AV Scanner detection for submitted file 2->66 68 Connects to many IPs within the same subnet mask (likely port scanning) 2->68 8 jklarm7.elf .systemd-journald 2->8         started        12 systemd gpu-manager 2->12         started        14 systemd gpu-manager 2->14         started        16 83 other processes 2->16 signatures3 process4 file5 56 /dev/shm/.systemd-journald, ELF 8->56 dropped 70 Drops invisible ELF files 8->70 72 Sample deletes itself 8->72 18 .systemd-journald 8->18         started        21 gpu-manager sh 12->21         started        23 gpu-manager sh 12->23         started        31 6 other processes 12->31 33 8 other processes 14->33 74 Sample reads /proc/mounts (often used for finding a writable filesystem) 16->74 25 gpu-manager sh 16->25         started        27 gpu-manager sh 16->27         started        29 gpu-manager sh 16->29         started        35 204 other processes 16->35 signatures6 process7 signatures8 64 Sample tries to kill multiple processes (SIGKILL) 18->64 47 2 other processes 18->47 37 sh grep 21->37         started        39 sh grep 23->39         started        41 sh grep 25->41         started        43 sh grep 27->43         started        45 sh grep 29->45         started        50 6 other processes 31->50 52 8 other processes 33->52 54 162 other processes 35->54 process9 signatures10 76 Sample tries to kill multiple processes (SIGKILL) 47->76
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/257225c983ed6adab97e8a4e3fdf60057ff0d227aaf0c88801210ad9b5ee66f5
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/257225c983ed6adab97e8a4e3fdf60057ff0d227aaf0c88801210ad9b5ee66f5/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-25 23:24:28 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 36 (38.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=evzclsmd5vvnvol6rjhd7x3aav77burhvlymrcabeefntnpom32q._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery
Link:
https://tria.ge/reports/260125-3dw8facw9e/
Behaviour
Reads runtime system information
Writes file to shm directory
Enumerates running processes
Deletes itself
Executes dropped EXE
Contacts a large (116600) amount of remote hosts
Creates a large amount of network flows
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/257225c983ed6adab97e8a4e3fdf60057ff0d227aaf0c88801210ad9b5ee66f5

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_8299c877
Create hunting rule
Author:Elastic Security
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 257225c983ed6adab97e8a4e3fdf60057ff0d227aaf0c88801210ad9b5ee66f5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3738855/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3739233/
  
URLhaus
https://urlhaus.abuse.ch/url/3739149/
  
URLhaus
https://urlhaus.abuse.ch/url/3739152/

Comments