MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6fe661df26820ae2e7fa83dd6c2167083cc22d064adcefb8093ec281e595fe4c. 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: 7


Intelligence 7 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6fe661df26820ae2e7fa83dd6c2167083cc22d064adcefb8093ec281e595fe4c
SHA3-384 hash: 14440467961a0e94edd4b230b2880ea8ec5874e24ee5a7477e9510dc74e07dca07d71c224cd1390a67dfc383fc406294
SHA1 hash: a6e3386b9c1b8128d0a070387b97f1e06bc28d7e
MD5 hash: f50b29dc075412ee0c9ca8019006eb66
humanhash: lithium-idaho-berlin-queen
File name:ntb.arm5
Download: download sample
Signature Mirai
Create hunting rule
File size:235'336 bytes
First seen:2026-08-08 18:01:07 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 6144:H/W9cKLr6y1m1YTt+bY1PK2D+olG5R8GB4T3iqjoVB9:fW901Ct+ERnMoW9
TLSH T1E9344BA6F850DB62C6D0267EFB6D428C331B07B8C2DE7102DE159F2523DB94A4F7A941
telfhash t13ee0df24b3bb057cd282a2860269e633b5ac0460df6229c9438b6a0e5c02e9425d7d32
Magika elf
Reporter abuse_ch
Tags:elf mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 8a08cb03f4ca157a57a5fe513968397127a6a7104db59c5c8164782247feb1cf
File size (compressed) :103'612 bytes
File size (de-compressed) :235'336 bytes
Format:linux/arm
Packed file: 8a08cb03f4ca157a57a5fe513968397127a6a7104db59c5c8164782247feb1cf

Intelligence

File Origin
# of uploads :
1
# of downloads :
68
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Mirai-31.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29325.LC.Pl.UNOFFICIAL
Create hunting rule

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

SecuriteInfo.com.Linux.Mirai-81.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-9441505-0
Create hunting rule

Unix.Trojan.Mirai-10011027-0
Create hunting rule

Unix.Trojan.Mirai-10011918-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Manages services
Launching a process
Creating a process from a recently created file
Creating a file
Collects information on the RAM
Sends data to a server
Sets a written file as executable
Creating a file in the %temp% directory
Kills processes
Runs as daemon
Collects information on the CPU
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc masquerade rust
Link:
https://www.filescan.io/uploads/6a776f0eebed19cd03d90c70/reports/512cff1c-cf75-4074-b9a3-03ce513acba7/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/2519a8cb-5dd5-479f-8eda-5c2b688cc3e6
Behavior Graph:
Download SVG
%3 guuid=b595fb37-1700-0000-31e7-6e0d320e0000 pid=3634 /usr/bin/sudo guuid=92f2823b-1700-0000-31e7-6e0d3b0e0000 pid=3643 /tmp/sample.bin guuid=b595fb37-1700-0000-31e7-6e0d320e0000 pid=3634->guuid=92f2823b-1700-0000-31e7-6e0d3b0e0000 pid=3643 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/4f9bdf76-242c-4e86-9d06-4c9e904abe73
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1954456
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops files in suspicious directories
Drops invisible ELF files
Found strings related to Crypto-Mining
Malicious sample detected (through community Yara rule)
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Multi AV Scanner detection for submitted file
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
Tries to open /proc/mtd (commonly found in embedded devices)
Writes identical ELF files to multiple locations
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1954456 Sample: ntb.arm5.elf Startdate: 08/08/2026 Architecture: LINUX Score: 100 66 85.11.167.183, 5060 COLOCATEL-INCColocatelNetwork-HighBandwidthDedicatedServersSC Netherlands 2->66 68 daisy.ubuntu.com 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 Antivirus detection for dropped file 2->72 74 Antivirus / Scanner detection for submitted sample 2->74 76 Multi AV Scanner detection for submitted file 2->76 11 ntb.arm5.elf 2->11         started        14 systemd snapd-env-generator 2->14         started        16 systemd snapd-env-generator 2->16         started        18 9 other processes 2->18 signatures3 process4 signatures5 90 Found strings related to Crypto-Mining 11->90 20 ntb.arm5.elf 11->20         started        process6 process7 22 ntb.arm5.elf 20->22         started        file8 58 /var/spool/cron/crontabs/root, ASCII 22->58 dropped 60 /tmp/.sys, ELF 22->60 dropped 62 /root/.bashrc, ASCII 22->62 dropped 64 6 other malicious files 22->64 dropped 82 Sample tries to set files in /etc globally writable 22->82 84 Writes identical ELF files to multiple locations 22->84 86 Sample tries to persist itself using /etc/profile 22->86 88 7 other signatures 22->88 26 ntb.arm5.elf sh 22->26         started        28 ntb.arm5.elf sh 22->28         started        30 ntb.arm5.elf sh 22->30         started        32 5 other processes 22->32 signatures9 process10 process11 34 sh at 26->34         started        38 sh 26->38         started        40 sh update-rc.d 28->40         started        42 sh syshelper 30->42         started        44 sh systemctl 32->44         started        46 sh systemctl 32->46         started        48 sh systemctl 32->48         started        file12 54 /var/spool/cron/atjobs/a0000101c641e3, POSIX 34->54 dropped 56 /var/spool/cron/atjobs/.SEQ, ASCII 34->56 dropped 78 Sample tries to persist itself using cron 34->78 80 Sample tries to persist itself using System V runlevels 40->80 50 update-rc.d systemctl 40->50         started        52 syshelper .sys 42->52         started        signatures13 process14
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/6fe661df26820ae2e7fa83dd6c2167083cc22d064adcefb8093ec281e595fe4c
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6fe661df26820ae2e7fa83dd6c2167083cc22d064adcefb8093ec281e595fe4c/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-08 18:01:55 UTC
File Type:
ELF32 Little (Exe)
AV detection:
15 of 36 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=n7tgdxzgqifofz72qpowyilhba6meligjloo7oajh3bidzmv7zga._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
antivm defense_evasion discovery exection execution persistence privilege_escalation
Link:
https://tria.ge/reports/260808-wl8swabm3v/
Behaviour
Reads runtime system information
Writes file to shm directory
Writes file to tmp directory
Changes its process name
Checks CPU configuration
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Enumerates running processes
Modifies init.d
Modifies rc script
Modifies systemd
Schedules an At job
Executes dropped EXE
Modifies the dynamic linker configuration file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.30
Link:
https://yomi.yoroi.company/submissions/6fe661df26820ae2e7fa83dd6c2167083cc22d064adcefb8093ec281e595fe4c

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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:has_telegram_urls
Create hunting rule
Author:Aaron DeVera<aaron@backchannel.re>
Description:Detects Telegram URLs
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Trojan_Gafgyt_28a2fe0c
Create hunting rule
Author:Elastic Security
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
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 8a08cb03f4ca157a57a5fe513968397127a6a7104db59c5c8164782247feb1cf

Mirai

elf 6fe661df26820ae2e7fa83dd6c2167083cc22d064adcefb8093ec281e595fe4c

(this sample)

  
Dropped by
SHA256 8a08cb03f4ca157a57a5fe513968397127a6a7104db59c5c8164782247feb1cf
  
Dropped by
MD5 69aa9fff1078d9c505a2b7ff459e3bb7
  
URLhaus
https://urlhaus.abuse.ch/url/3899946/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3899949/

Comments