MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4dc1581c6e85fc4f45e3797d256afca8f2755cb1b433daf07d05f795e9c7891b. 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: 11


Intelligence 11 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4dc1581c6e85fc4f45e3797d256afca8f2755cb1b433daf07d05f795e9c7891b
SHA3-384 hash: f7c32833a3966c7a4a43a4af6ddb62b2a86490f5d9435e89e77c54cf20f888b3bc67b0cbc3376b7c17a5db4655584d54
SHA1 hash: a71b583c31466dbb1bf43b8ca38ded626c1d8db6
MD5 hash: 19a48bcc85e2095541285f5d1f9d2505
humanhash: mockingbird-river-sink-oranges
File name:Yboats.i686
Download: download sample
Signature Mirai
Create hunting rule
File size:120'208 bytes
First seen:2025-12-03 16:37:22 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:aW6GQudy3DREum5B3ZBtziRNpSE5RmyfSl:qudy3N9CPIza
TLSH T162C32B81F68741F6CC174934709BFA3FDA72946E4136CAE9DF988E35DA27A01421B34E
telfhash t1093168b9ff7249acb3d09801e2cb5710d62ed43b245026f805f22ae032f65426079c3a
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-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 22225ac56d5b1e5cc24ec6a09623d49b9d64148bc88509957687f80d1f5ab6eb
File size (compressed) :44'616 bytes
File size (de-compressed) :120'208 bytes
Format:linux/i386
Packed file: 22225ac56d5b1e5cc24ec6a09623d49b9d64148bc88509957687f80d1f5ab6eb

Intelligence

File Origin
# of uploads :
1
# of downloads :
24
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
Mirai
Details
Mirai
an XOR decryption key and at least a c2 socket address
Link:
https://research.acce.ciphertechsolutions.com/results/5d686e5e-daf8-40d9-b019-68d25efed8b5/
Detection(s):
Sanesecurity.Malware.29502.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30442.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29524.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7135870-0
Create hunting rule

Unix.Dropper.Mirai-7135906-0
Create hunting rule

Unix.Dropper.Mirai-7135966-0
Create hunting rule

Unix.Dropper.Mirai-7135979-0
Create hunting rule

Unix.Dropper.Mirai-7135980-0
Create hunting rule

Unix.Dropper.Mirai-7171384-0
Create hunting rule

Unix.Dropper.Mirai-7355719-0
Create hunting rule

Unix.Trojan.Mirai-9935718-0
Create hunting rule

Unix.Trojan.Mirai-9945193-0
Create hunting rule

Unix.Trojan.Mirai-9946826-0
Create hunting rule

Unix.Dropper.Mirai-9977145-0
Create hunting rule

Unix.Dropper.Mirai-10008433-0
Create hunting rule

Unix.Trojan.Mirai-10028946-0
Create hunting rule

Unix.Trojan.Gafgyt-6748839-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
DNS request
Runs as daemon
Opens a port
Sends data to a server
Substitutes an application name
Deleting of the original file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade mirai obfuscated
Link:
https://www.filescan.io/uploads/69306777189af9fec66b888f/reports/8ff9bc41-1159-4935-ac90-e8bb82fdbded/overview
Result
Gathering data
Gathering data
Result
Threat name:
Mirai, Okiru
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1825607
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample deletes itself
Yara detected Mirai
Yara detected Okiru
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4dc1581c6e85fc4f45e3797d256afca8f2755cb1b433daf07d05f795e9c7891b
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4dc1581c6e85fc4f45e3797d256afca8f2755cb1b433daf07d05f795e9c7891b/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/4dc1581c6e85fc4f45e3797d256afca8f2755cb1b433daf07d05f795e9c7891b
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-03 16:38:17 UTC
File Type:
ELF32 Little (Exe)
AV detection:
23 of 36 (63.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jxavqhdoqx6e6rpdpf6sk2x4vdzhkxfrwqz5v4d5ax3zl2ohrenq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai linux
Link:
https://tria.ge/reports/251203-t5gsds1mbv/
Behaviour
Deletes itself
Malware Config
C2 Extraction:
scan.504.su
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:CVE_2017_17215
Create hunting rule
Author:NDA0E
Description:Detects exploitation attempt of CVE-2017-17215
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:iot_req_metachar
Create hunting rule
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Generic_Threat_1ac392ca
Create hunting rule
Author:Elastic Security
Rule name:Linux_Generic_Threat_3bcc1630
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_0cb1699c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_0d73971c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_268aac0b
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_2e3f67a9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_3a85a418
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_70ef58f1
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_88de437f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_c8385b81
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
Create hunting rule
Author:Elastic Security
Rule name:MAL_ELF_LNX_Mirai_Oct10_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects ELF Mirai variant
Reference:Internal Research
Rule name:MAL_ELF_LNX_Mirai_Oct10_1_RID2F39
Create hunting rule
Author:Florian Roth
Description:Detects ELF Mirai variant
Reference:Internal Research
Rule name:SUSP_XORed_Mozilla_Oct19
Create hunting rule
Author:Florian Roth
Description:Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()
Rule name:SUSP_XORed_Mozilla_RID2DB4
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
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 22225ac56d5b1e5cc24ec6a09623d49b9d64148bc88509957687f80d1f5ab6eb

Mirai

elf 4dc1581c6e85fc4f45e3797d256afca8f2755cb1b433daf07d05f795e9c7891b

(this sample)

  
Dropped by
SHA256 22225ac56d5b1e5cc24ec6a09623d49b9d64148bc88509957687f80d1f5ab6eb
  
URLhaus
https://urlhaus.abuse.ch/url/3723949/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 3ab9e492dbe6836c19bc5b6105dae651

Comments