MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a84f65668fc77f814ad920b60f5733c69ac7ff91bfa05836675d6019ea38bf82. 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: 8


Intelligence 8 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a84f65668fc77f814ad920b60f5733c69ac7ff91bfa05836675d6019ea38bf82
SHA3-384 hash: 519f8a14a3fd76487fc7928a5bc9d9867a2213d6ccbe5c656939463cd8641ef0c6402da9d415bfbf5fbc3f30b7db978b
SHA1 hash: 1211cfa7cf14e2a6c8dade3d2705751878e1951d
MD5 hash: 761a979936776c72f2904e42ecb97dd0
humanhash: gee-oscar-fanta-paris
File name:arm5.urbotnetisass
Download: download sample
Signature Mirai
Create hunting rule
File size:184'732 bytes
First seen:2025-09-11 03:27:24 UTC
Last seen:2025-09-11 09:18:09 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:84QX8kPaCs5Nm5Q8buoQwWumnvuyQNut1LfEjOwPnGjaDRA:bQX82Jszm5Xi/uyQNu9uBIaDRA
TLSH T144042B69FD819E56C6C256BAFB5EC399372713B8D3EEB103DD145720328B41B0E2B681
telfhash t1fd117a348a484dec76e18449a5ed331a7615b5d66330086ab2fe8cdd43739e6b42181c
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 :
2
# of downloads :
72
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
no reply from clamd
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
anti-vm expand lolbin packed remote threat
Link:
https://www.filescan.io/uploads/68c241ac0d1238ff0aa9d055/reports/b73f2358-d312-4bb2-a171-e79a537f8be3/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-09-11T01:12:00Z UTC
Last seen:
2025-09-11T01:12:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a84f65668fc77f814ad920b60f5733c69ac7ff91bfa05836675d6019ea38bf82/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/4a25a850-ca93-4527-aab2-23ec81457682
Behavior Graph:
Download SVG
%3 guuid=70615ca5-1600-0000-7c47-60cc890c0000 pid=3209 /usr/bin/sudo guuid=b439eaa7-1600-0000-7c47-60cc8f0c0000 pid=3215 /tmp/sample.bin guuid=70615ca5-1600-0000-7c47-60cc890c0000 pid=3209->guuid=b439eaa7-1600-0000-7c47-60cc8f0c0000 pid=3215 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/1cb7b2c9-a7b9-4dfc-9837-ef79dd5f108a
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1775278
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: 1775278 Sample: arm5.urbotnetisass.elf Startdate: 11/09/2025 Architecture: LINUX Score: 92 47 94.154.35.153, 43212 SELECTELRU Ukraine 2->47 49 109.202.202.202, 80 INIT7CH Switzerland 2->49 51 3 other IPs or domains 2->51 53 Antivirus / Scanner detection for submitted sample 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 Yara detected Gafgyt 2->57 59 Yara detected Mirai 2->59 10 arm5.urbotnetisass.elf 2->10         started        12 udisksd dumpe2fs 2->12         started        14 udisksd dumpe2fs 2->14         started        16 14 other processes 2->16 signatures3 process4 process5 18 arm5.urbotnetisass.elf 10->18         started        file6 39 /memfd:/usr/lib/librt.so.1 (deleted), ELF 18->39 dropped 41 /memfd:/usr/lib/libpthread.so.0 (deleted), ELF 18->41 dropped 43 /memfd:/usr/lib/libm.so.6 (deleted), ELF 18->43 dropped 45 41 other malicious files 18->45 dropped 61 Writes identical ELF files to multiple locations 18->61 22 arm5.urbotnetisass.elf 18->22         started        24 arm5.urbotnetisass.elf 18->24         started        signatures7 process8 process9 26 arm5.urbotnetisass.elf 22->26         started        29 arm5.urbotnetisass.elf 24->29         started        signatures10 63 Sample reads /proc/mounts (often used for finding a writable filesystem) 26->63 65 Deletes system log files 26->65 31 arm5.urbotnetisass.elf 26->31         started        33 arm5.urbotnetisass.elf 26->33         started        35 arm5.urbotnetisass.elf 26->35         started        37 7 other processes 26->37 process11
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a84f65668fc77f814ad920b60f5733c69ac7ff91bfa05836675d6019ea38bf82
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a84f65668fc77f814ad920b60f5733c69ac7ff91bfa05836675d6019ea38bf82/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-09-11 03:28:24 UTC
File Type:
ELF32 Little (Exe)
AV detection:
10 of 24 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vbhwkzupy57ycswzec3a6vzty2nmp74rx6qfqnthlvqbt2ryx6ba._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/250911-dz285sxzdt/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-7755770-0
YARA:
n/a
Link:
https://app.threat.zone/submission/8115a192-4022-4af8-9822-252152da55a6
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/a84f65668fc77f814ad920b60f5733c69ac7ff91bfa05836675d6019ea38bf82

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:Linux_Generic_Threat_d94e1020
Create hunting rule
Author:Elastic Security
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 a84f65668fc77f814ad920b60f5733c69ac7ff91bfa05836675d6019ea38bf82

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3618220/
  
Delivery method
Distributed via web download

Comments