MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3f5d6f349c123f71787e5c68203f6f287932a971fec2f99dc7815cb17e9abfd. 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 3 File information Comments
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SHA256 hash: b3f5d6f349c123f71787e5c68203f6f287932a971fec2f99dc7815cb17e9abfd
SHA3-384 hash: 87f27a0c2eece5879bbe4899c9fcea6b1b126b00d413b55c6be5e069d82195aa8cde7608be92fe827a40625ff3be2384
SHA1 hash: babad6490859c2bd367159ca7024afdcc375aebc
MD5 hash: 9265a0e76c998ebd7ffb6fc8348bdc4b
humanhash: enemy-early-vermont-spring
File name:ecco.arm
Download: download sample
Signature Mirai
Create hunting rule
File size:82'272 bytes
First seen:2025-12-04 21:17:32 UTC
Last seen:2025-12-05 09:16:50 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:5n/+K1I5tQn7gSi5CNyEeOt+E/+VPIF5Sq3ex2ULkhQRWvG0wM3zc:5/+sI3Qn7+5CbtJ/CIJQLkaUvGvM3A
TLSH T1E483122403584E1EF2052C3BB6AC9E8B56360674D537F078B9C21A2CBFA778DA1753E5
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) :82'272 bytes
File size (de-compressed) :248'864 bytes
Format:linux/arm
Unpacked file: 62012171be467500f2d7259e4a75f347878f096f0ae9c52d475215727ca9ef0b

Intelligence

File Origin
# of uploads :
2
# of downloads :
75
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/3308fa67-94df-4366-b70c-c7c3ff695e85/
Detection(s):
SecuriteInfo.com.Linux.Mirai-18.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-12-04T17:32:00Z UTC
Last seen:
2025-12-04T20:28:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b3f5d6f349c123f71787e5c68203f6f287932a971fec2f99dc7815cb17e9abfd/results?tab=lookup
Malware family:
Mirai
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9e0d1dc0-f352-4237-823b-6d249d212d34
Result
Threat name:
Mirai, Gafgyt
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1826826
Signature
Connects to many ports of the same IP (likely port scanning)
Deletes system log files
Detected Mirai
Drops files in suspicious directories
Executes the "crontab" command typically for achieving persistence
Malicious sample detected (through community Yara rule)
Manipulation of devices in /dev
Sample is packed with UPX
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Suricata IDS alerts for network traffic
Uses known network protocols on non-standard ports
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1826826 Sample: ecco.arm.elf Startdate: 04/12/2025 Architecture: LINUX Score: 100 78 115.65.105.179 XEPHIONNTT-MECorporationJP Japan 2->78 80 115.65.105.185 XEPHIONNTT-MECorporationJP Japan 2->80 82 98 other IPs or domains 2->82 90 Suricata IDS alerts for network traffic 2->90 92 Malicious sample detected (through community Yara rule) 2->92 94 Detected Mirai 2->94 96 5 other signatures 2->96 12 ecco.arm.elf 2->12         started        signatures3 process4 process5 14 ecco.arm.elf 12->14         started        process6 16 ecco.arm.elf 14->16         started        file7 68 /etc/init.d/sysd, POSIX 16->68 dropped 84 Sample tries to set files in /etc globally writable 16->84 86 Drops files in suspicious directories 16->86 88 Sample tries to persist itself using System V runlevels 16->88 20 ecco.arm.elf 16->20         started        22 ecco.arm.elf 16->22         started        25 ecco.arm.elf sh 16->25         started        signatures8 process9 file10 27 ecco.arm.elf 20->27         started        29 ecco.arm.elf sh 20->29         started        31 ecco.arm.elf 20->31         started        39 4 other processes 20->39 70 /usr/Bin), ELF 22->70 dropped 33 ecco.arm.elf 22->33         started        35 ecco.arm.elf sh 22->35         started        37 sh cp 25->37         started        process11 process12 55 739 other processes 27->55 41 sh crontab 29->41         started        45 sh 29->45         started        47 ecco.arm.elf 31->47         started        57 3 other processes 31->57 59 249 other processes 33->59 49 sh crontab 35->49         started        51 sh 35->51         started        53 ecco.arm.elf 39->53         started        file13 72 /var/spool/cron/crontabs/tmp.7QZgcb, ASCII 41->72 dropped 61 sh crontab 45->61         started        98 Deletes system log files 47->98 74 /var/spool/cron/cr...mp.Y61tPM (deleted), ASCII 49->74 dropped 76 /dev/null (deleted), ASCII 49->76 dropped 100 Manipulation of devices in /dev 49->100 102 Sample tries to persist itself using cron 49->102 104 Executes the "crontab" command typically for achieving persistence 49->104 64 sh crontab 51->64         started        66 ecco.arm.elf 57->66         started        signatures14 process15 signatures16 106 Executes the "crontab" command typically for achieving persistence 61->106
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b3f5d6f349c123f71787e5c68203f6f287932a971fec2f99dc7815cb17e9abfd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3f5d6f349c123f71787e5c68203f6f287932a971fec2f99dc7815cb17e9abfd/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-04 21:18:30 UTC
File Type:
ELF32 Little (Exe)
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wp25n42jyer7of4h4xdiea7w6kdzgkuxd7wc7go4pak4wf7jvp6q._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
upx
Link:
https://tria.ge/reports/251204-z5qm7atqaz/
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c4f3cd7b-9c8b-4703-bceb-3fe05fe251dc
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/b3f5d6f349c123f71787e5c68203f6f287932a971fec2f99dc7815cb17e9abfd

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
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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 b3f5d6f349c123f71787e5c68203f6f287932a971fec2f99dc7815cb17e9abfd

(this sample)

Mirai

elf 62012171be467500f2d7259e4a75f347878f096f0ae9c52d475215727ca9ef0b

  
URLhaus
https://urlhaus.abuse.ch/url/3725559/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 62012171be467500f2d7259e4a75f347878f096f0ae9c52d475215727ca9ef0b
  
Dropping
MD5 e153bf71ba51ee57ab2827354b17b130

Comments