MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c
SHA3-384 hash: fd8828e18a311469ed9d9d042a4a9267e3a6ded7a8c55789a4aeed201a6f5719c4f677cc6d158b58005f37ce866b4265
SHA1 hash: f5a34637a52f0fcac29b0d5fd455ba9bd9863330
MD5 hash: e38f3c6ffcea42e27176ac6575866696
humanhash: massachusetts-spring-king-timing
File name:telnetd
Download: download sample
Signature Mirai
Create hunting rule
File size:198'780 bytes
First seen:2025-09-15 08:17:03 UTC
Last seen:2025-09-15 21:30:32 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:69Cjm+ZggKJ4u3j/EU9H3jx26pflKzcQMz:6iLKauT/bH3jx26pflKzcQa
TLSH T18814A52AB7618EB7DC0ECE7301DA4501108CD95A42E96FABF674E958E76BC4F04E3D84
telfhash t1fb4186529d7887242ff39928acad877302126a2353767f72af35c4cc54220b0e539d4f
Magika elf
Reporter abuse_ch
Tags:elf gafgyt mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
57
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30541.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.32133.LX.BOT.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7139052-0
Create hunting rule

Unix.Dropper.Mirai-7139229-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Opens a port
Creating a file
Collects information on the CPU
Launching a process
Collects information on the OS
Connection attempt
Kills processes
Runs as daemon
Substitutes an application name
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc lolbin obfuscated remote threat
Link:
https://www.filescan.io/uploads/68c7cb9f73287948292a3120/reports/87d18719-2c76-4487-905c-2f92191a25a5/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/a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c
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:
2025-09-15T05:24:00Z UTC
Last seen:
2025-09-15T05:24:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.h HEUR:Backdoor.Linux.Gafgyt.fz HEUR:Backdoor.Linux.Gafgyt.bj HEUR:Backdoor.Linux.Gafgyt.a
Link:
https://opentip.kaspersky.com/a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/bdca2ea0-2156-4bdb-995a-b103868b1093
Behavior Graph:
Download SVG
%3 guuid=134f359e-1600-0000-bcc6-1bc8830c0000 pid=3203 /usr/bin/sudo guuid=96eddf9f-1600-0000-bcc6-1bc8860c0000 pid=3206 /tmp/sample.bin guuid=134f359e-1600-0000-bcc6-1bc8830c0000 pid=3203->guuid=96eddf9f-1600-0000-bcc6-1bc8860c0000 pid=3206 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/3c7e0dca-a58c-45e0-b014-c6d5143ed2a0
Result
Threat name:
Gafgyt
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1777573
Signature
Antivirus / Scanner detection for submitted sample
Connects to many ports of the same IP (likely port scanning)
Contains symbols with names commonly found in malware
Multi AV Scanner detection for submitted file
Opens /proc/net/* files useful for finding connected devices and routers
Terminates several processes with shell command 'killall'
Yara detected Gafgyt
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1777573 Sample: telnetd.elf Startdate: 15/09/2025 Architecture: LINUX Score: 80 49 206.123.145.140, 56010, 65481 LEASEWEB-USA-NYC-11US United States 2->49 51 169.254.169.254, 80 USDOSUS Reserved 2->51 53 4 other IPs or domains 2->53 57 Antivirus / Scanner detection for submitted sample 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 Yara detected Gafgyt 2->61 63 2 other signatures 2->63 9 dash rm telnetd.elf 2->9         started        12 dash rm 2->12         started        14 dash cut 2->14         started        16 8 other processes 2->16 signatures3 process4 signatures5 65 Opens /proc/net/* files useful for finding connected devices and routers 9->65 18 telnetd.elf 9->18         started        20 telnetd.elf 9->20         started        22 telnetd.elf 9->22         started        process6 process7 24 telnetd.elf sh 18->24         started        26 telnetd.elf sh 18->26         started        28 telnetd.elf sh 18->28         started        32 5 other processes 18->32 30 telnetd.elf 20->30         started        process8 34 sh killall 24->34         started        37 sh killall 26->37         started        39 sh killall 28->39         started        41 sh killall 32->41         started        43 sh killall 32->43         started        45 sh killall 32->45         started        47 2 other processes 32->47 signatures9 55 Terminates several processes with shell command 'killall' 34->55
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c/
Verdict:
Malicious
Threat:
Family.GAFGYT
Link:
https://tip.neiki.dev/file/a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c
Threat name:
Linux.Backdoor.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-09-15 08:17:28 UTC
File Type:
ELF32 Little (Exe)
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uo7v5uxltqquaoryssypdaxknuq6wvy5zkswn67z2ashgmb63rga._file
Result
Malware family:
gafgyt
Create hunting rule
Score:
  10/10
Tags:
family:gafgyt antivm defense_evasion discovery
Link:
https://tria.ge/reports/250915-j61a1sgk31/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Changes its process name
Checks CPU configuration
Reads CPU attributes
Reads system network configuration
Enumerates running processes
Reads system routing table
Modifies Watchdog functionality
Writes memory of remote process
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7139052-0
YARA:
n/a
Link:
https://app.threat.zone/submission/92ab2863-ad30-40fa-a56c-e3cb84b1c560
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/a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
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:generic_IG_stealer
Create hunting rule
Author:RE4rensics
Description:Detects stealers that interacts with IG endpoints after stealing IG cookies
Rule name:Linux_Gafgyt_Generic
Create hunting rule
Author:albertzsigovits
Description:Generic Approach to Mirai/Gafgyt samples
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
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

Mirai

elf a3bf5ed2eb9c21403a3894b0f182ea6d21eb571dcaa566fbf9d02473303edc4c

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3576544/
  
Delivery method
Distributed via web download

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