MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5d821b677a08f9e5862563b2c183ba4bc8db67e5b6de59888c5aa65a566eca54. 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: 12


Intelligence 12 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5d821b677a08f9e5862563b2c183ba4bc8db67e5b6de59888c5aa65a566eca54
SHA3-384 hash: 6b8850e790b98c201100f8e5b57e48c40a4ad435dd9c7407f5b6517493065c6df027d8125234d3ca0961e7126adbc13a
SHA1 hash: 142a136acb2af52ac4fcd67ba97efc0783e8d11d
MD5 hash: 71a21ca7cb1473382ef3e4bacdc7d133
humanhash: sodium-september-cola-mirror
File name:Polar.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:127'980 bytes
First seen:2025-11-22 16:38:00 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:0TZbTo9L4FrpABvfG2xJ33p3scGDQloUpd:cZvo9L4OG2l5UKrpd
TLSH T13EC35DC4E64FD0F9E85615702036BB369B73FD3A113EEA43D3A89A369CA3580D51A35C
telfhash t1985116fa667f0ce857e06802d18e5f317d4daa7b286076b605f35834367fa8144bac39
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 gafgyt mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 93a1c252d10d76024a5d488f92658d0f9cd32dc0ad90ed9ed64b26bcb93194ca
File size (compressed) :52'928 bytes
File size (de-compressed) :127'980 bytes
Format:linux/i386
Packed file: 93a1c252d10d76024a5d488f92658d0f9cd32dc0ad90ed9ed64b26bcb93194ca

Intelligence

File Origin
# of uploads :
1
# of downloads :
46
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.28940.LC.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Siggen.9999-14.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-7100807-0
Create hunting rule

Unix.Dropper.Mirai-7135897-0
Create hunting rule

Unix.Dropper.Mirai-7135901-0
Create hunting rule

Unix.Dropper.Mirai-7135909-0
Create hunting rule

Unix.Trojan.Mirai-7135916-0
Create hunting rule

Unix.Dropper.Mirai-7135918-0
Create hunting rule

Unix.Dropper.Mirai-7135954-0
Create hunting rule

Unix.Dropper.Mirai-7136016-0
Create hunting rule

Unix.Dropper.Mirai-7136028-0
Create hunting rule

Unix.Trojan.Mirai-8025795-0
Create hunting rule

Unix.Dropper.Mirai-10007027-0
Create hunting rule

Unix.Trojan.Mirai-10009361-0
Create hunting rule

Unix.Trojan.Mirai-10028515-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Sends data to a server
Receives data from a server
Runs as daemon
Opens a port
DNS request
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
46
Number of processes launched:
6
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/5d821b677a08f9e5862563b2c183ba4bc8db67e5b6de59888c5aa65a566eca54
Behaviour
Information Gathering
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-11-22T14:48:00Z UTC
Last seen:
2025-11-22T15:48:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/5d821b677a08f9e5862563b2c183ba4bc8db67e5b6de59888c5aa65a566eca54/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/c6b29350-1f9c-4dce-a876-bed3fafa827a
Behavior Graph:
Download SVG
%3 guuid=60252c4a-1b00-0000-6c86-c5153d0c0000 pid=3133 /usr/bin/sudo guuid=9d26474c-1b00-0000-6c86-c515450c0000 pid=3141 /tmp/sample.bin net guuid=60252c4a-1b00-0000-6c86-c5153d0c0000 pid=3133->guuid=9d26474c-1b00-0000-6c86-c515450c0000 pid=3141 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=9d26474c-1b00-0000-6c86-c515450c0000 pid=3141->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=b672734c-1b00-0000-6c86-c515490c0000 pid=3145 /tmp/sample.bin guuid=9d26474c-1b00-0000-6c86-c515450c0000 pid=3141->guuid=b672734c-1b00-0000-6c86-c515490c0000 pid=3145 clone guuid=cf60e678-1c00-0000-6c86-c5154a0e0000 pid=3658 /tmp/sample.bin guuid=9d26474c-1b00-0000-6c86-c515450c0000 pid=3141->guuid=cf60e678-1c00-0000-6c86-c5154a0e0000 pid=3658 clone guuid=7669ed78-1c00-0000-6c86-c5154b0e0000 pid=3659 /tmp/sample.bin net send-data zombie guuid=9d26474c-1b00-0000-6c86-c515450c0000 pid=3141->guuid=7669ed78-1c00-0000-6c86-c5154b0e0000 pid=3659 clone guuid=cea97a4c-1b00-0000-6c86-c5154a0c0000 pid=3146 /tmp/sample.bin guuid=b672734c-1b00-0000-6c86-c515490c0000 pid=3145->guuid=cea97a4c-1b00-0000-6c86-c5154a0c0000 pid=3146 clone guuid=38347f4c-1b00-0000-6c86-c5154b0c0000 pid=3147 /tmp/sample.bin dns net send-data zombie guuid=b672734c-1b00-0000-6c86-c515490c0000 pid=3145->guuid=38347f4c-1b00-0000-6c86-c5154b0c0000 pid=3147 clone guuid=38347f4c-1b00-0000-6c86-c5154b0c0000 pid=3147->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 82B 835e2637-8ea8-5733-9bcd-e417a3d56db3 lolzzmortex.duckdns.org:69 guuid=38347f4c-1b00-0000-6c86-c5154b0c0000 pid=3147->835e2637-8ea8-5733-9bcd-e417a3d56db3 send: 6B guuid=7669ed78-1c00-0000-6c86-c5154b0e0000 pid=3659->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 1230B 310a0ed0-c544-54ca-bf3f-fca55e459297 65.222.202.53:80 guuid=7669ed78-1c00-0000-6c86-c5154b0e0000 pid=3659->310a0ed0-c544-54ca-bf3f-fca55e459297 send: 4B
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d106de70-3137-4bf0-bd3c-1bd46652561c
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1819122
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Uses dynamic DNS services
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1819122 Sample: Polar.x86.elf Startdate: 22/11/2025 Architecture: LINUX Score: 60 22 lolzzmortex.duckdns.org 2->22 24 169.254.169.254, 80 USDOSUS Reserved 2->24 26 3 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 8 Polar.x86.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 32 Uses dynamic DNS services 22->32 process4 process5 12 Polar.x86.elf 8->12         started        14 Polar.x86.elf 8->14         started        16 Polar.x86.elf 8->16         started        process6 18 Polar.x86.elf 12->18         started        20 Polar.x86.elf 12->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/5d821b677a08f9e5862563b2c183ba4bc8db67e5b6de59888c5aa65a566eca54
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5d821b677a08f9e5862563b2c183ba4bc8db67e5b6de59888c5aa65a566eca54/
Threat name:
Linux.Trojan.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-11-22 16:38:46 UTC
File Type:
ELF32 Little (Exe)
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lwbbwz32bd46lbrfmozmda52jpenwz7fw3pftcemlktfuvtozjka._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery linux
Link:
https://tria.ge/reports/251122-t5mnmsyqbv/
Behaviour
Reads runtime system information
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Malware Config
C2 Extraction:
lolzzmortex.duckdns.org
Verdict:
Malicious
Tags:
trojan mirai gafgyt Unix.Trojan.Mirai-7100807-0
YARA:
Linux_Trojan_Gafgyt_5bf62ce4 Linux_Trojan_Gafgyt_ea92cca8 Linux_Trojan_Mirai_b14f4c5d Linux_Trojan_Mirai_88de437f Linux_Trojan_Mirai_ae9d0fa6 Linux_Trojan_Mirai_389ee3e9 Linux_Trojan_Mirai_cc93863b Linux_Trojan_Mirai_8aa7b5d3
Link:
https://app.threat.zone/submission/878fe86f-f1b7-4730-a5b2-764208614a0c
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/5d821b677a08f9e5862563b2c183ba4bc8db67e5b6de59888c5aa65a566eca54

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:botnet_Yakuza
Create hunting rule
Author:NDA0E
Description:Yakuza botnet
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Trojan_Gafgyt_5bf62ce4
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_ea92cca8
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_389ee3e9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_88de437f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_8aa7b5d3
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_ae9d0fa6
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_b14f4c5d
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
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

sh 3913c5e5e2c0324d51da1c172928b0d32e8dbbecae4f180b4f0ab643afcbd389

Mirai

elf 93a1c252d10d76024a5d488f92658d0f9cd32dc0ad90ed9ed64b26bcb93194ca

Mirai

elf 5d821b677a08f9e5862563b2c183ba4bc8db67e5b6de59888c5aa65a566eca54

(this sample)

  
Dropped by
SHA256 93a1c252d10d76024a5d488f92658d0f9cd32dc0ad90ed9ed64b26bcb93194ca
  
URLhaus
https://urlhaus.abuse.ch/url/3714156/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 dfe08de9e9abbc255050011f222d7b0e
  
URLhaus
https://urlhaus.abuse.ch/url/3714927/

Comments