MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2c308b4e9bf0aa29474550b82b687ca07648d8d814fb0564e60afa8d622ee29. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b2c308b4e9bf0aa29474550b82b687ca07648d8d814fb0564e60afa8d622ee29
SHA3-384 hash: 8dcc7eadb0b68d101661bfa6f409f8856ad8f404cd172038c6c49ef89c51a79fcf40b06e4b8d411ba60d5dc75a78e186
SHA1 hash: d43d33f7d02135fa6b2ef00a7ff76e4b8446a93d
MD5 hash: 18ec3c576070fe0133d1154b3daf1ce9
humanhash: diet-sink-football-bravo
File name:m68k.urbotnetisass
Download: download sample
Signature Mirai
Create hunting rule
File size:231'076 bytes
First seen:2025-09-19 21:32:31 UTC
Last seen:2025-09-19 21:53:58 UTC
File type: elf
MIME type:application/x-executable
ssdeep 6144:oGcFHgiLa90r6A86KEgAsTuRiopZ4y4j8zj1aS/e54tjXVRAD:SFHgIM0ryKRiop414VVRAD
TLSH T187346DC7F500CE7DF8CB963B815B4A17B131976500821A27B327F95ABD371A60A37E89
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
96
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30645.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.31069.LX.BOT.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.31075.LX.BOT.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-6981989-0
Create hunting rule

Unix.Trojan.Mirai-7755770-0
Create hunting rule

Unix.Trojan.Gafgyt-7782058-0
Create hunting rule

Unix.Trojan.Mirai-9885259-0
Create hunting rule

Unix.Trojan.Mirai-9940650-0
Create hunting rule

Unix.Trojan.Gafgyt-9940653-0
Create hunting rule

Unix.Trojan.Mirai-9951087-0
Create hunting rule

Unix.Trojan.Mirai-10008934-0
Create hunting rule

Unix.Trojan.Mirai-10018298-0
Create hunting rule

Unix.Trojan.Gafgyt-6735924-0
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm
Link:
https://www.filescan.io/uploads/68cdcc1473af424b47e80ef0/reports/e8d6e069-e245-482b-b878-a5a0cacce0bf/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2025-09-19T20:30:00Z UTC
Last seen:
2025-09-19T20:30:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b2c308b4e9bf0aa29474550b82b687ca07648d8d814fb0564e60afa8d622ee29/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/6cdf9b0f-0be8-45f6-a384-8177e8281f1e
Behavior Graph:
Download SVG
%3 guuid=42757421-1700-0000-be9d-f1c4d50c0000 pid=3285 /usr/bin/sudo guuid=ee307f24-1700-0000-be9d-f1c4dc0c0000 pid=3292 /tmp/sample.bin guuid=42757421-1700-0000-be9d-f1c4d50c0000 pid=3285->guuid=ee307f24-1700-0000-be9d-f1c4dc0c0000 pid=3292 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2d64b4af-ffde-4441-af9c-defdf999c45f
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1781037
Signature
Deletes system log files
Drops files in suspicious directories
Drops invisible ELF files
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to persist itself using /etc/profile
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
Writes identical ELF files to multiple locations
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1781037 Sample: m68k.urbotnetisass.elf Startdate: 19/09/2025 Architecture: LINUX Score: 100 62 94.154.35.153, 43212 SELECTELRU Ukraine 2->62 64 109.202.202.202, 80 INIT7CH Switzerland 2->64 66 2 other IPs or domains 2->66 76 Yara detected Gafgyt 2->76 78 Yara detected Mirai 2->78 10 m68k.urbotnetisass.elf 2->10         started        14 udisksd dumpe2fs 2->14         started        16 udisksd dumpe2fs 2->16         started        18 8 other processes 2->18 signatures3 process4 file5 56 /root/.bashrc, ASCII 10->56 dropped 58 /etc/profile, ASCII 10->58 dropped 60 /etc/crontab, ASCII 10->60 dropped 86 Sample tries to persist itself using /etc/profile 10->86 88 Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions 10->88 90 Sample tries to persist itself using cron 10->90 92 Sample tries to persist itself using System V runlevels 10->92 20 m68k.urbotnetisass.elf 10->20         started        signatures6 process7 file8 48 /etc/rc.local, ASCII 20->48 dropped 50 /_dev_shm_.6240_librt.so.1, ELF 20->50 dropped 52 /_dev_shm_.6240_libpthread.so.0, ELF 20->52 dropped 54 7 other malicious files 20->54 dropped 80 Sample tries to set files in /etc globally writable 20->80 82 Writes identical ELF files to multiple locations 20->82 84 Sample tries to persist itself using System V runlevels 20->84 24 m68k.urbotnetisass.elf sh 20->24         started        26 m68k.urbotnetisass.elf 20->26         started        28 m68k.urbotnetisass.elf 20->28         started        30 m68k.urbotnetisass.elf 20->30         started        signatures9 process10 process11 32 sh cp 24->32         started        36 m68k.urbotnetisass.elf 26->36         started        38 m68k.urbotnetisass.elf 28->38         started        40 m68k.urbotnetisass.elf 30->40         started        file12 46 /usr/bin/.sh, ELF 32->46 dropped 68 Drops invisible ELF files 32->68 70 Drops files in suspicious directories 32->70 72 Sample reads /proc/mounts (often used for finding a writable filesystem) 36->72 74 Deletes system log files 36->74 42 m68k.urbotnetisass.elf 36->42         started        44 m68k.urbotnetisass.elf 36->44         started        signatures13 process14
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b2c308b4e9bf0aa29474550b82b687ca07648d8d814fb0564e60afa8d622ee29
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b2c308b4e9bf0aa29474550b82b687ca07648d8d814fb0564e60afa8d622ee29/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-09-19 21:33:40 UTC
File Type:
ELF32 Big (Exe)
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wlbqrnhjx4fkffdukufyfnuhzidwjdmnqfh3avsomcx2rvrc5yuq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/250919-1dz8zshm8t/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-6981989-0
YARA:
n/a
Link:
https://app.threat.zone/submission/be8b014b-a505-4359-961a-2b2439ad0461
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/b2c308b4e9bf0aa29474550b82b687ca07648d8d814fb0564e60afa8d622ee29

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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

Mirai

elf b2c308b4e9bf0aa29474550b82b687ca07648d8d814fb0564e60afa8d622ee29

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3618254/
  
Delivery method
Distributed via web download

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