MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b8a0355b145ca5c0dd5a31f02ee61e8735134558a767d7e373ccca1257980c5. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b8a0355b145ca5c0dd5a31f02ee61e8735134558a767d7e373ccca1257980c5
SHA3-384 hash: f9f58d7b64123dec58c21c97bdb1e684f52243fbbefa8e9f1d35064136491c58020ba4041d06ddd5a7c841bee6053870
SHA1 hash: 4429ada521dfeeca449d149e4e30a74c7dd13c9b
MD5 hash: 9add80b7da88e31f5fc12e3095c9749e
humanhash: william-alabama-romeo-magazine
File name:mipsel.urbotnetisass
Download: download sample
Signature Mirai
Create hunting rule
File size:257'044 bytes
First seen:2025-09-06 06:07:22 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:CXgyQf8AXnp9eAToMRpxnjoP1kvS9reaL0frXZPnnfONFaJQ:gkfXu6hpxnih6aL09PTJQ
TLSH T13744E70AAF610EFBE8AFCE3752E90B4625CC685222993F797134D914B54B54F0AE3C74
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

Intelligence

File Origin
# of uploads :
1
# of downloads :
44
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
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-7755770-0
Create hunting rule

Unix.Trojan.Mirai-9885259-0
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.Gafgyt-6735924-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unmounts file systems
Opens a port
Sends data to a server
Creating a file
Deletes a file
Receives data from a server
Deleting a recently created file
Creates directories in a temporary directory
Connection attempt
Kills processes
Mounts file systems
Runs as daemon
Collects information on the network activity
Substitutes an application name
Writes files to system directory
Deletes a system binary file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm anti-vm exploit mirai threat
Link:
https://www.filescan.io/uploads/68bbd00637c25fcf12d57694/reports/9d2d89c6-156c-4bfd-98a2-7dfee11b16f4/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
not packed
Botnet:
unknown
Number of open files:
7
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/4b8a0355b145ca5c0dd5a31f02ee61e8735134558a767d7e373ccca1257980c5
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-09-05T09:22:00Z UTC
Last seen:
2025-09-05T09:22:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4b8a0355b145ca5c0dd5a31f02ee61e8735134558a767d7e373ccca1257980c5/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/77b29f7c-009e-4b2f-a0a8-7cd8b7c0d05d
Behavior Graph:
Download SVG
%3 guuid=91531933-1b00-0000-3941-1bc285040000 pid=1157 /usr/bin/sudo guuid=cc888436-1b00-0000-3941-1bc28f040000 pid=1167 /tmp/sample.bin guuid=91531933-1b00-0000-3941-1bc285040000 pid=1157->guuid=cc888436-1b00-0000-3941-1bc28f040000 pid=1167 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2cee0f37-54eb-4e3f-85df-4196946a9b3a
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1772216
Signature
Antivirus / Scanner detection for submitted sample
Deletes system log files
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
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: 1772216 Sample: mipsel.urbotnetisass.elf Startdate: 06/09/2025 Architecture: LINUX Score: 92 47 94.154.35.153, 43212, 51936 SELECTELRU Ukraine 2->47 49 54.247.62.1, 443, 57212 AMAZON-02US United States 2->49 51 Antivirus / Scanner detection for submitted sample 2->51 53 Multi AV Scanner detection for submitted file 2->53 55 Yara detected Gafgyt 2->55 57 Yara detected Mirai 2->57 10 mipsel.urbotnetisass.elf 2->10         started        12 udisksd dumpe2fs 2->12         started        14 udisksd dumpe2fs 2->14         started        16 28 other processes 2->16 signatures3 process4 process5 18 mipsel.urbotnetisass.elf 10->18         started        file6 39 /_dev_shm_.5431_librt.so.1, ELF 18->39 dropped 41 /_dev_shm_.5431_libpthread.so.0, ELF 18->41 dropped 43 /_dev_shm_.5431_libm.so.6, ELF 18->43 dropped 45 6 other malicious files 18->45 dropped 59 Writes identical ELF files to multiple locations 18->59 22 mipsel.urbotnetisass.elf 18->22         started        24 mipsel.urbotnetisass.elf 18->24         started        signatures7 process8 process9 26 mipsel.urbotnetisass.elf 22->26         started        29 mipsel.urbotnetisass.elf 24->29         started        signatures10 61 Sample reads /proc/mounts (often used for finding a writable filesystem) 26->61 63 Deletes system log files 26->63 31 mipsel.urbotnetisass.elf 26->31         started        33 mipsel.urbotnetisass.elf 26->33         started        35 mipsel.urbotnetisass.elf 26->35         started        37 7 other processes 26->37 process11
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4b8a0355b145ca5c0dd5a31f02ee61e8735134558a767d7e373ccca1257980c5
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b8a0355b145ca5c0dd5a31f02ee61e8735134558a767d7e373ccca1257980c5/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-09-05 18:46:00 UTC
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jofagvnrixffydovumpqf3tb5bzvcncvrj3h27rxhtgkcjlzqdcq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
credential_access defense_evasion discovery
Link:
https://tria.ge/reports/250906-gwe6zszjw8/
Behaviour
Reads runtime system information
System Network Configuration Discovery
Changes its process name
Reads system network configuration
Reads process memory
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-7755770-0
YARA:
n/a
Link:
https://app.threat.zone/submission/a3deb7b4-ab60-401e-8b31-78e87ee2b9bf
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/4b8a0355b145ca5c0dd5a31f02ee61e8735134558a767d7e373ccca1257980c5

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 4b8a0355b145ca5c0dd5a31f02ee61e8735134558a767d7e373ccca1257980c5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3618252/
  
Delivery method
Distributed via web download

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