MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66dcb48a513212f97ea2d5854a75684e45205ef7df570537b6dccf9a50f884fe. 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


Gafgyt


Vendor detections: 12


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66dcb48a513212f97ea2d5854a75684e45205ef7df570537b6dccf9a50f884fe
SHA3-384 hash: afded85dbc93a6abd90d3da59c60e8b596f6fab24cff423044a9550320701bc029e3d2a30b9c219980a42a5226ec8bea
SHA1 hash: fb5a3ef4e41b1b4265176135e5b862d6adc1eb43
MD5 hash: 2ac67a4cbdefabba6e918217b32e8df2
humanhash: aspen-muppet-lamp-victor
File name:top1miku.armv7l
Download: download sample
Signature Gafgyt
Create hunting rule
File size:195'257 bytes
First seen:2025-07-26 18:08:44 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:nynLMxyicpqgj5VZcZB0fgHaQuEhyjqHXH4bEbzbY4EY7rYDM/9rWWP0mewazqvY:ynLMxtcpqgd7KWYHatEhyjq3HVbXYhYG
TLSH T1E1144B46EA908A13C4D3277ABA9F414533339B64D3EB330699186FF43F8679E0E67505
telfhash t16331fb615b3512256ea1d928dcec93b2412e9b025305ee32df2ac48c142e49be13ac0f
Magika elf
Reporter abuse_ch
Tags:elf gafgyt mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
24
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Dropper.Mirai-7135925-0
Create hunting rule

Unix.Trojan.Mirai-9760303-0
Create hunting rule

Multios.Coinminer.Miner-6781728-2
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Opens a port
Sends data to a server
Sets a written file as executable
Receives data from a server
Sets a file as executable
Launching a process
Connection attempt
DNS request
Runs as daemon
Substitutes an application name
Writes files to system directory
Creates or modifies files in /init.d to set up autorun
Performs a bruteforce attack in the network
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gcc lolbin mirai obfuscated remote
Link:
https://www.filescan.io/uploads/688519d6a16348d835efb831/reports/58daf2eb-9300-4a89-9f0a-ff902cd23ebe/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
196.251.73.115/HBTs
Number of open files:
3
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
2323,23,37215
Full report:
https://elfdigest.com/brief/66dcb48a513212f97ea2d5854a75684e45205ef7df570537b6dccf9a50f884fe
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/31c862db-458d-4c28-b2b1-5f82a116fc0a
Behavior Graph:
Download SVG
%3 guuid=76d175a9-1900-0000-d0d9-d1dbae090000 pid=2478 /usr/bin/sudo guuid=8b2ef0ab-1900-0000-d0d9-d1dbb5090000 pid=2485 /tmp/sample.bin guuid=76d175a9-1900-0000-d0d9-d1dbae090000 pid=2478->guuid=8b2ef0ab-1900-0000-d0d9-d1dbb5090000 pid=2485 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0ac40487-5177-4267-87f9-9c37d49ff9d5
Result
Threat name:
Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.evad.mine
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1744750
Signature
Connects to many ports of the same IP (likely port scanning)
Drops files in suspicious directories
Drops invisible ELF files
Found strings related to Crypto-Mining
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Uses dynamic DNS services
Yara detected Mirai
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1744750 Sample: top1miku.armv7l.elf Startdate: 26/07/2025 Architecture: LINUX Score: 96 40 top1miku.duckdns.org 2->40 42 102.83.94.51 ZAINUGASUG Uganda 2->42 44 99 other IPs or domains 2->44 52 Multi AV Scanner detection for submitted file 2->52 54 Yara detected Mirai 2->54 56 Yara detected Xmrig cryptocurrency miner 2->56 58 Connects to many ports of the same IP (likely port scanning) 2->58 10 top1miku.armv7l.elf 2->10         started        signatures3 60 Uses dynamic DNS services 40->60 process4 signatures5 68 Found strings related to Crypto-Mining 10->68 13 top1miku.armv7l.elf 10->13         started        process6 process7 15 top1miku.armv7l.elf 13->15         started        file8 38 /etc/init.d/sysd, POSIX 15->38 dropped 46 Sample tries to set files in /etc globally writable 15->46 48 Drops files in suspicious directories 15->48 50 Sample tries to persist itself using System V runlevels 15->50 19 top1miku.armv7l.elf sh 15->19         started        21 top1miku.armv7l.elf 15->21         started        signatures9 process10 signatures11 24 sh cp 19->24         started        62 Sample deletes itself 21->62 28 top1miku.armv7l.elf sh 21->28         started        30 top1miku.armv7l.elf sh 21->30         started        32 top1miku.armv7l.elf sh 21->32         started        34 12 other processes 21->34 process12 file13 36 /usr/bin/.sh, ELF 24->36 dropped 64 Drops invisible ELF files 24->64 66 Drops files in suspicious directories 24->66 signatures14
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/66dcb48a513212f97ea2d5854a75684e45205ef7df570537b6dccf9a50f884fe
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66dcb48a513212f97ea2d5854a75684e45205ef7df570537b6dccf9a50f884fe/
Verdict:
Malicious
Threat:
HEUR:Backdoor.Linux.Mirai
Link:
https://tip.neiki.dev/file/66dcb48a513212f97ea2d5854a75684e45205ef7df570537b6dccf9a50f884fe
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-07-25 19:04:58 UTC
File Type:
ELF32 Little (Exe)
AV detection:
19 of 35 (54.29%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3oljcsrgijps7vc2wcuu5lijzcsaxxx35lqkn5w3thzuuhyqt7a._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai credential_access defense_evasion discovery execution persistence
Link:
https://tria.ge/reports/250726-wrlwasbj7s/
Behaviour
Command and Scripting Interpreter: Unix Shell
Reads runtime system information
Changes its process name
Reads system network configuration
Reads process memory
Creates a large amount of network flows
Enumerates active TCP sockets
Enumerates running processes
Modifies init.d
Modifies rc script
Write file to user bin folder
File and Directory Permissions Modification
Deletes itself
Contacts a large (8613) amount of remote hosts
Malware Config
C2 Extraction:
top1miku.duckdns.org
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7135925-0
YARA:
n/a
Link:
https://app.threat.zone/submission/1ac1362e-5000-4b3f-adc6-a3550ac1f9c5
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/66dcb48a513212f97ea2d5854a75684e45205ef7df570537b6dccf9a50f884fe

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:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:Linux_Generic_Threat_8299c877
Create hunting rule
Author:Elastic Security
Rule name:MAL_ARM_LNX_Mirai_Mar13_2022
Create hunting rule
Author:Mehmet Ali Kerimoglu a.k.a. CYB3RMX
Description:Detects new ARM Mirai variant
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags

File information

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

Web download

Gafgyt

elf 66dcb48a513212f97ea2d5854a75684e45205ef7df570537b6dccf9a50f884fe

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3590425/
  
Delivery method
Distributed via web download

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