MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51e85925e9c3d37565a4cea9a69c86f039030bf3fcfae8750bb8ea474d9f676f. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 51e85925e9c3d37565a4cea9a69c86f039030bf3fcfae8750bb8ea474d9f676f
SHA3-384 hash: 9e919a5786981c6947eb99a853a632bb20934aea34f09e416c6516d32c1abb5a0f37571627d9e298df6c41ca343797e5
SHA1 hash: 8fb839d00c91f0ff62d80a71c9063190e98ad15f
MD5 hash: 9827ce9f7395470ebf2ca00e33cd4d8e
humanhash: floor-vegan-happy-shade
File name:arm7.urbotnetisass
Download: download sample
Signature Mirai
Create hunting rule
File size:235'256 bytes
First seen:2025-09-12 14:18:37 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 6144:tFBvE0WPh9wKv+gHhLaRvUXGANjSVA/XMrxQ9PRAPz:5vfWPhOKW0hLatUXGANjS6/Mr+9PRA
TLSH T1B8344C56FD91DF56D5C526FABBAE814933136BB8D3EA7102CC106FA4238B48B0F76601
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
36
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.31069.LX.BOT.UNOFFICIAL
Create hunting rule

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.Gafgyt-9940653-0
Create hunting rule

Unix.Trojan.Mirai-9951087-0
Create hunting rule

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

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unmounts file systems
Opens a port
Sends data to a server
Creating a file
Deletes a file
Receives data from a server
Connection attempt
Kills processes
Mounts file systems
Runs as daemon
Collects information on the network activity
Substitutes an application name
Writes files to system directory
Deletes a system binary file
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
anti-vm expand gcc lolbin packed remote threat
Link:
https://www.filescan.io/uploads/68c42c7adbc6f5a29c420f7f/reports/9a63ced2-443e-4cba-808d-9e6fbf73f7fe/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-09-12T12:26:00Z UTC
Last seen:
2025-09-12T12:26:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/51e85925e9c3d37565a4cea9a69c86f039030bf3fcfae8750bb8ea474d9f676f/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/5cc142dc-6fda-4588-b986-f9882443c017
Behavior Graph:
Download SVG
%3 guuid=38a078af-1800-0000-f8c0-103836070000 pid=1846 /usr/bin/sudo guuid=556757b1-1800-0000-f8c0-10383d070000 pid=1853 /tmp/sample.bin guuid=38a078af-1800-0000-f8c0-103836070000 pid=1846->guuid=556757b1-1800-0000-f8c0-10383d070000 pid=1853 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/5b0c4fa5-a30d-4956-81eb-724544932037
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1776522
Signature
Antivirus / Scanner detection for submitted sample
Deletes system log files
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
Writes identical ELF files to multiple locations
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1776522 Sample: arm7.urbotnetisass.elf Startdate: 12/09/2025 Architecture: LINUX Score: 84 47 94.154.35.153, 43212 SELECTELRU Ukraine 2->47 49 Antivirus / Scanner detection for submitted sample 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 Yara detected Mirai 2->53 10 arm7.urbotnetisass.elf 2->10         started        12 udisksd dumpe2fs 2->12         started        14 udisksd dumpe2fs 2->14         started        16 12 other processes 2->16 signatures3 process4 process5 18 arm7.urbotnetisass.elf 10->18         started        file6 39 /memfd:/usr/lib/librt.so.1 (deleted), ELF 18->39 dropped 41 /memfd:/usr/lib/libpthread.so.0 (deleted), ELF 18->41 dropped 43 /memfd:/usr/lib/libm.so.6 (deleted), ELF 18->43 dropped 45 41 other malicious files 18->45 dropped 55 Writes identical ELF files to multiple locations 18->55 22 arm7.urbotnetisass.elf 18->22         started        24 arm7.urbotnetisass.elf 18->24         started        signatures7 process8 process9 26 arm7.urbotnetisass.elf 22->26         started        29 arm7.urbotnetisass.elf 24->29         started        signatures10 57 Sample reads /proc/mounts (often used for finding a writable filesystem) 26->57 59 Deletes system log files 26->59 31 arm7.urbotnetisass.elf 26->31         started        33 arm7.urbotnetisass.elf 26->33         started        35 arm7.urbotnetisass.elf 26->35         started        37 7 other processes 26->37 process11
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/51e85925e9c3d37565a4cea9a69c86f039030bf3fcfae8750bb8ea474d9f676f
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/51e85925e9c3d37565a4cea9a69c86f039030bf3fcfae8750bb8ea474d9f676f/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-09-12 14:21:38 UTC
File Type:
ELF32 Little (Exe)
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=khufsjpjypjxkznez2u2nheg6a4qgc7t7t5oq5ilxdveotm7m5xq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
credential_access defense_evasion discovery
Link:
https://tria.ge/reports/250912-rn8tfayvcy/
Behaviour
Reads runtime system information
Changes its process name
Reads system network configuration
Reads process memory
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-7755770-0
YARA:
n/a
Link:
https://app.threat.zone/submission/404d0372-a7f8-41bf-9021-7f8e8c2d3a17
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/51e85925e9c3d37565a4cea9a69c86f039030bf3fcfae8750bb8ea474d9f676f

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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf 51e85925e9c3d37565a4cea9a69c86f039030bf3fcfae8750bb8ea474d9f676f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3618219/
  
Delivery method
Distributed via web download

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