MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4372bf3c767e01af65efe347edcba4b7397833ca53d5bb176f943adf6ea0ffbd. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4372bf3c767e01af65efe347edcba4b7397833ca53d5bb176f943adf6ea0ffbd
SHA3-384 hash: 6f057383d460fb56cc52056d64168b597418efac164060790120e22a12e56e840d404c515b9aa179c0a2f916fbb09d9a
SHA1 hash: a2f0a9f3125222f280d2300646d7ebb0ab14297b
MD5 hash: da97e7cb6ac34f19808e6efb7f603346
humanhash: berlin-bulldog-montana-montana
File name:putita.arm7
Download: download sample
Signature Mirai
Create hunting rule
File size:186'000 bytes
First seen:2026-08-22 14:16:25 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:EZyhXYl56B81o3iwNrCW/QEpIqytxi56vK+UQ4g8OcCyJlSiOgnb2we1q7U2mzZY:EWko8ONGqytxi5qZUQ4g8OByjSihhe1m
TLSH T134043A95F890DE52C6D5267AF96D418C331317B8C2DBB106CE248F38B7EB95A0F3A941
Magika elf
Reporter abuse_ch
Tags:elf mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 a28a0bae3819a7cdd9bf924db6db8149cec15ed87fc24d6897f5c04efbaa8a75
File size (compressed) :82'968 bytes
File size (de-compressed) :186'000 bytes
Format:linux/arm
Packed file: a28a0bae3819a7cdd9bf924db6db8149cec15ed87fc24d6897f5c04efbaa8a75

Intelligence

File Origin
# of uploads :
1
# of downloads :
60
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Mirai.10742.27809.30140.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Opens a port
Launching a process
Connection attempt
Sets a written file as executable
Creates or modifies symbolic links
Creating a file
Substitutes an application name
Writes files to system directory
Deleting of the original file
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gcc masquerade mirai rust
Link:
https://www.filescan.io/uploads/6a89af6456fb9e3a839c4821/reports/b86b4850-c1a6-41bf-904d-696b691f0f8a/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
52
Number of processes launched:
20
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/4372bf3c767e01af65efe347edcba4b7397833ca53d5bb176f943adf6ea0ffbd
Behaviour
Persistence
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/68eb6236-3094-4932-a8b9-7539947d848a
Behavior Graph:
Download SVG
%3 guuid=5067e976-1c00-0000-9952-b3afe90b0000 pid=3049 /usr/bin/sudo guuid=1d0ebb79-1c00-0000-9952-b3afec0b0000 pid=3052 /tmp/sample.bin guuid=5067e976-1c00-0000-9952-b3afe90b0000 pid=3049->guuid=1d0ebb79-1c00-0000-9952-b3afec0b0000 pid=3052 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/828e82c4-746b-40b3-873c-e7bc29a92f0a
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1962218
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops files in suspicious directories
Executes the "crontab" command typically for achieving persistence
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Multi AV Scanner detection for submitted file
Protects files from modification
Sample deletes itself
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1962218 Sample: putita.arm7.elf Startdate: 22/08/2026 Architecture: LINUX Score: 100 49 64.89.163.215, 36078, 666 NETIFACE-TORONTO-NetifaceAmericaIncUS Germany 2->49 53 Antivirus detection for dropped file 2->53 55 Antivirus / Scanner detection for submitted sample 2->55 57 Multi AV Scanner detection for submitted file 2->57 9 putita.arm7.elf 2->9         started        signatures3 process4 file5 41 /usr/lib/kworker-helper, ELF 9->41 dropped 43 /root/.bashrc, ASCII 9->43 dropped 45 /etc/systemd/system/kworker-helper.service, ASCII 9->45 dropped 47 3 other malicious files 9->47 dropped 65 Sample tries to set files in /etc globally writable 9->65 67 Sample tries to persist itself using /etc/profile 9->67 69 Drops files in suspicious directories 9->69 71 3 other signatures 9->71 13 putita.arm7.elf sh 9->13         started        15 putita.arm7.elf sh 9->15         started        17 putita.arm7.elf chattr 9->17         started        20 6 other processes 9->20 signatures6 process7 signatures8 22 sh crontab 13->22         started        26 sh 13->26         started        28 sh crontab 15->28         started        51 Protects files from modification 17->51 30 putita.arm7.elf 20->30         started        32 putita.arm7.elf 20->32         started        34 putita.arm7.elf 20->34         started        process9 file10 39 /var/spool/cron/crontabs/tmp.xZq1it, ASCII 22->39 dropped 61 Sample tries to persist itself using cron 22->61 63 Executes the "crontab" command typically for achieving persistence 22->63 36 sh crontab 26->36         started        signatures11 process12 signatures13 59 Executes the "crontab" command typically for achieving persistence 36->59
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4372bf3c767e01af65efe347edcba4b7397833ca53d5bb176f943adf6ea0ffbd
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4372bf3c767e01af65efe347edcba4b7397833ca53d5bb176f943adf6ea0ffbd/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-22 14:17:16 UTC
File Type:
ELF32 Little (SO)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=inzl6pdwpya26zpp4nd63s5ew44xqm6kkpk3wf3psq5n63va766q._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion execution persistence privilege_escalation
Link:
https://tria.ge/reports/260822-rlq6lszvdx/
Behaviour
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Modifies init.d
Modifies rc script
Modifies systemd
Deletes itself
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/4372bf3c767e01af65efe347edcba4b7397833ca53d5bb176f943adf6ea0ffbd

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_arm_mips_ko_so
Create hunting rule
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:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:woof_mirai_variant
Create hunting rule
Author:Nokia Deepfield ERT
Description:Detects Woof Mirai variant (ChaCha20 table, HTTP C2 with token/guid, .woof dropper)
Reference:Internal analysis of sample 6ef4ce02

File information

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

Web download

Mirai

elf a28a0bae3819a7cdd9bf924db6db8149cec15ed87fc24d6897f5c04efbaa8a75

Mirai

elf 4372bf3c767e01af65efe347edcba4b7397833ca53d5bb176f943adf6ea0ffbd

(this sample)

  
Dropped by
SHA256 a28a0bae3819a7cdd9bf924db6db8149cec15ed87fc24d6897f5c04efbaa8a75
  
URLhaus
https://urlhaus.abuse.ch/url/3892127/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3885281/
  
Dropped by
MD5 2049e337bef79052c5d4b72520be1c33
  
URLhaus
https://urlhaus.abuse.ch/url/3892135/

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