MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3872dc574fa31405eeb6eba0125c3881dfda05a30b04c76a7e885073932700f. 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: b3872dc574fa31405eeb6eba0125c3881dfda05a30b04c76a7e885073932700f
SHA3-384 hash: fd3ded92b18a799a734c7c2b0aba73a728b2ac6169865acfcde48edbe7474bc82a4381d493f0353feac05525bec4e692
SHA1 hash: 2e3797529eff042282c1e73b8bd644d258109d94
MD5 hash: 0c48f0a533d38f407e9e957e774ad578
humanhash: cat-autumn-nuts-river
File name:debug
Download: download sample
Signature Mirai
Create hunting rule
File size:40'012 bytes
First seen:2025-08-13 07:16:33 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 768:4H5t0NfyDmIMyjW20S5bReRLWyF++MN+enWuaHTJP//4JnkBae6t+nbcuyD7UHQv:4ZwfxIvqMoRL3UN+juazd/4JkB56t+nQ
TLSH T1B303F12287B9D149CC2659795FBFB90A2D20B57068DC15D7E214C4BF68E8F3C29382C3
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) :40'012 bytes
File size (de-compressed) :79'796 bytes
Format:linux/i386
Unpacked file: fbaa6e56136fe9cbbf31232a48fe29330974d626552d3374459e467a6cc80c52

Intelligence

File Origin
# of uploads :
1
# of downloads :
30
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Dropper.Mirai-7135858-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Changes access rights for a written file
Receives data from a server
Connection attempt
Opens a port
Sends data to a server
Changes access rights for a file
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/942c29b0-e828-4f8e-9fa5-b117e61c5d3b
Behavior Graph:
Download SVG
%3 guuid=2933dc11-1d00-0000-5b44-58d9f10a0000 pid=2801 /usr/bin/sudo guuid=9ec20315-1d00-0000-5b44-58d9f30a0000 pid=2803 /tmp/sample.bin net send-data guuid=2933dc11-1d00-0000-5b44-58d9f10a0000 pid=2801->guuid=9ec20315-1d00-0000-5b44-58d9f30a0000 pid=2803 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=9ec20315-1d00-0000-5b44-58d9f30a0000 pid=2803->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 510B c1b0b58b-bcce-5b42-91a3-ce9e347d9f3d s3o-cnc.ddns.net:80 guuid=9ec20315-1d00-0000-5b44-58d9f30a0000 pid=2803->c1b0b58b-bcce-5b42-91a3-ce9e347d9f3d send: 22B guuid=db7d6751-1d00-0000-5b44-58d9770b0000 pid=2935 /tmp/sample.bin dns net send-data guuid=9ec20315-1d00-0000-5b44-58d9f30a0000 pid=2803->guuid=db7d6751-1d00-0000-5b44-58d9770b0000 pid=2935 clone guuid=26da887d-1e00-0000-5b44-58d94f0d0000 pid=3407 /tmp/sample.bin guuid=9ec20315-1d00-0000-5b44-58d9f30a0000 pid=2803->guuid=26da887d-1e00-0000-5b44-58d94f0d0000 pid=3407 clone guuid=db7d6751-1d00-0000-5b44-58d9770b0000 pid=2935->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 850B c38ca444-0fdc-539c-bfb6-84060b76c97d s3o-cnc.ddns.net:12121 guuid=db7d6751-1d00-0000-5b44-58d9770b0000 pid=2935->c38ca444-0fdc-539c-bfb6-84060b76c97d send: 150B guuid=8b347851-1d00-0000-5b44-58d9780b0000 pid=2936 /tmp/sample.bin guuid=db7d6751-1d00-0000-5b44-58d9770b0000 pid=2935->guuid=8b347851-1d00-0000-5b44-58d9780b0000 pid=2936 clone
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/caf9f9fd-ea8e-424c-bbd7-808871da2601
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1755830
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Uses dynamic DNS services
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1755830 Sample: debug.elf Startdate: 13/08/2025 Architecture: LINUX Score: 64 18 s3o-cnc.ddns.net 2->18 20 169.254.169.254, 80 USDOSUS Reserved 2->20 22 3 other IPs or domains 2->22 24 Malicious sample detected (through community Yara rule) 2->24 26 Multi AV Scanner detection for submitted file 2->26 28 Sample is packed with UPX 2->28 8 debug.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 30 Uses dynamic DNS services 18->30 process4 process5 12 debug.elf 8->12         started        14 debug.elf 8->14         started        process6 16 debug.elf 12->16         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b3872dc574fa31405eeb6eba0125c3881dfda05a30b04c76a7e885073932700f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3872dc574fa31405eeb6eba0125c3881dfda05a30b04c76a7e885073932700f/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-08-13 07:17:45 UTC
File Type:
ELF32 Little (Exe)
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wods3rlu7iyuaxxln25acjodrao73ic2gcyey5vh5ccqoojsoahq._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/250813-h4j1kshj2w/
Behaviour
Reads runtime system information
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Mirai
Mirai family
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7135858-0
YARA:
n/a
Link:
https://app.threat.zone/submission/5d9f5ba1-619e-4eb8-a7c2-f07ab6812669
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.68
Link:
https://yomi.yoroi.company/submissions/b3872dc574fa31405eeb6eba0125c3881dfda05a30b04c76a7e885073932700f

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: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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
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 b3872dc574fa31405eeb6eba0125c3881dfda05a30b04c76a7e885073932700f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3601668/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3601841/

Comments