MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b784633b94f332feb9cf753e478adb69f8cd2a80b90293f06ef4ce7bcb1eb690. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b784633b94f332feb9cf753e478adb69f8cd2a80b90293f06ef4ce7bcb1eb690
SHA3-384 hash: a0f2ad65a805f0b5bf7f1197bb6a29d7a6cfa33423645c6b4a068a74c7a26509c2fdc47910919d9ac5246ae8dc53c433
SHA1 hash: ef8ba3dfd33b2323eb203f90d8e3c46d0cba91fc
MD5 hash: 259932c139baaa6d3f47b20651d23966
humanhash: saturn-fanta-five-tennis
File name:Polar.x86_64
Download: download sample
Signature Mirai
Create hunting rule
File size:67'792 bytes
First seen:2026-01-17 20:18:40 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:v17cJ2kCGS4O3We3nUGzDfWWUaXmrNjwPk2Sv:vuJCGS0QnUKD9mrNkMvv
TLSH T1456302DBC232D1A5D9F33F362C5741B4F582547929922B5F0E417029DDAAFF11E19A80
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 UPX
File size (compressed) :67'792 bytes
File size (de-compressed) :181'320 bytes
Format:linux/amd64
Unpacked file: 9cbf53dc657fe63889b827dccc441b5d6004e074686f86cf1d63033acee7d688

Intelligence

File Origin
# of uploads :
1
# of downloads :
49
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/6d843005-1ad7-4c1c-9535-ff7ede404b0f/
Detection(s):
SecuriteInfo.com.Linux.Mirai-19.UNOFFICIAL
Create hunting rule

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/696beed0f3caa3bca067a853/reports/2c663715-1ed8-4862-bb29-2a9361616c36/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-01-17T17:27:00Z UTC
Last seen:
2026-01-17T18:44:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.cw HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.bl HEUR:Backdoor.Linux.Gafgyt.bj HEUR:Backdoor.Linux.Mirai.r HEUR:Backdoor.Linux.Mirai.h
Link:
https://opentip.kaspersky.com/b784633b94f332feb9cf753e478adb69f8cd2a80b90293f06ef4ce7bcb1eb690/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/18f768eb-f0d7-4137-b7ba-170e45176ea3
Behavior Graph:
Download SVG
%3 guuid=7980ad59-1600-0000-c572-178b5d0d0000 pid=3421 /usr/bin/sudo guuid=fa19bb5b-1600-0000-c572-178b640d0000 pid=3428 /tmp/sample.bin mprotect-exec net guuid=7980ad59-1600-0000-c572-178b5d0d0000 pid=3421->guuid=fa19bb5b-1600-0000-c572-178b640d0000 pid=3428 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=fa19bb5b-1600-0000-c572-178b640d0000 pid=3428->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=3c8e695c-1600-0000-c572-178b670d0000 pid=3431 /tmp/sample.bin guuid=fa19bb5b-1600-0000-c572-178b640d0000 pid=3428->guuid=3c8e695c-1600-0000-c572-178b670d0000 pid=3431 clone guuid=4b70d386-1700-0000-c572-178ba90f0000 pid=4009 /tmp/sample.bin guuid=fa19bb5b-1600-0000-c572-178b640d0000 pid=3428->guuid=4b70d386-1700-0000-c572-178ba90f0000 pid=4009 clone guuid=294dda86-1700-0000-c572-178baa0f0000 pid=4010 /tmp/sample.bin net send-data zombie guuid=fa19bb5b-1600-0000-c572-178b640d0000 pid=3428->guuid=294dda86-1700-0000-c572-178baa0f0000 pid=4010 clone guuid=a58f735c-1600-0000-c572-178b680d0000 pid=3432 /tmp/sample.bin guuid=3c8e695c-1600-0000-c572-178b670d0000 pid=3431->guuid=a58f735c-1600-0000-c572-178b680d0000 pid=3432 clone guuid=d654785c-1600-0000-c572-178b690d0000 pid=3433 /tmp/sample.bin net send-data zombie guuid=3c8e695c-1600-0000-c572-178b670d0000 pid=3431->guuid=d654785c-1600-0000-c572-178b690d0000 pid=3433 clone guuid=d654785c-1600-0000-c572-178b690d0000 pid=3433->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 1290B 310a0ed0-c544-54ca-bf3f-fca55e459297 65.222.202.53:80 guuid=d654785c-1600-0000-c572-178b690d0000 pid=3433->310a0ed0-c544-54ca-bf3f-fca55e459297 send: 4B guuid=294dda86-1700-0000-c572-178baa0f0000 pid=4010->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 1290B guuid=294dda86-1700-0000-c572-178baa0f0000 pid=4010->310a0ed0-c544-54ca-bf3f-fca55e459297 send: 4B
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/16828b74-f203-4784-82d4-4e0bb508fc4c
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1852603
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Sends malformed DNS queries
Uses dynamic DNS services
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1852603 Sample: Polar.x86_64.elf Startdate: 17/01/2026 Architecture: LINUX Score: 84 22 ilovenetssomuch.ddns.net. [malformed] 2->22 24 169.254.169.254, 80 USDOSUS Reserved 2->24 26 2 other IPs or domains 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Yara detected Gafgyt 2->32 38 2 other signatures 2->38 8 Polar.x86_64.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 34 Sends malformed DNS queries 22->34 36 Uses dynamic DNS services 22->36 process4 process5 12 Polar.x86_64.elf 8->12         started        14 Polar.x86_64.elf 8->14         started        16 Polar.x86_64.elf 8->16         started        process6 18 Polar.x86_64.elf 12->18         started        20 Polar.x86_64.elf 12->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b784633b94f332feb9cf753e478adb69f8cd2a80b90293f06ef4ce7bcb1eb690
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b784633b94f332feb9cf753e478adb69f8cd2a80b90293f06ef4ce7bcb1eb690/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/b784633b94f332feb9cf753e478adb69f8cd2a80b90293f06ef4ce7bcb1eb690
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-17 20:19:40 UTC
File Type:
ELF64 Little (Exe)
AV detection:
15 of 36 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w6cggo4u6mzp5oopou7epcw3nh4m2kuaxebjh4do6thhxsy6w2ia._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion discovery linux upx
Link:
https://tria.ge/reports/260117-y34llacs5b/
Behaviour
Reads runtime system information
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Mirai
Mirai family
Malware Config
C2 Extraction:
ilovenetssomuch.ddns.net
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/582711c8-4752-463f-af5d-cd462137a3d7
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/b784633b94f332feb9cf753e478adb69f8cd2a80b90293f06ef4ce7bcb1eb690

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_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

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

Web download

Mirai

elf b784633b94f332feb9cf753e478adb69f8cd2a80b90293f06ef4ce7bcb1eb690

(this sample)

Mirai

elf 9cbf53dc657fe63889b827dccc441b5d6004e074686f86cf1d63033acee7d688

  
URLhaus
https://urlhaus.abuse.ch/url/3711448/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 9cbf53dc657fe63889b827dccc441b5d6004e074686f86cf1d63033acee7d688
  
Dropping
MD5 d7b42e87de94694463201a975d94d508

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