MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a497cd58c9107b0bf11639ccdf2b12310d6a9aeabb6dadbd1e71eba042f8efea. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a497cd58c9107b0bf11639ccdf2b12310d6a9aeabb6dadbd1e71eba042f8efea
SHA3-384 hash: 14fe05f164183d376100faa1c9079e1ffb1d0d812a38d00d51384df3ca7ea1ae02af78847ab6132073714a1ef05ee514
SHA1 hash: 9ab5a900963884fff4026c3a0b03312bb23eb92c
MD5 hash: ef6619b92e71b87ba03af799cd07432e
humanhash: avocado-sierra-speaker-nine
File name:wlan.arm5
Download: download sample
Signature Mirai
Create hunting rule
File size:3'994'912 bytes
First seen:2026-03-30 01:18:24 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:Xg6AxAeRbNSlKSCVyc5n0GYbHc5htjJzwkbDZUt33+ByY3qaPH3:Q6ACeRElK9ocBhYKPJzw8qt3Ed3qA3
TLSH T1BF064A62BC90CA62CBC0A6BAF75E829C73135B75D2DF71068D14473437EB95A0E3B642
telfhash t160e0686432aa3332b68409e8e1ae693d4b7310d9eb892a308734547d3f0b6c16816833
Magika elf
Reporter abuse_ch
Tags:elf Hajime mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
105
Origin country :
DE DE
Vendor Threat Intelligence
Gathering data
Detection(s):
Sanesecurity.Malware.30479.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Changes access rights for a written file
Connection attempt
Runs as daemon
Kills processes
Opens a port
Collects information on the RAM
Launching a process
Locks files
Sends data to a server
DNS request
Creating a process from a recently created file
Creating a file
Collects information on the CPU
Creating a file in the %temp% directory
Collects information on the network activity
Manages services
Changes the time when the file was created, accessed, or modified
Receives data from a server
Sets a written file as executable
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Writes files to system directory
Performs a bruteforce attack in the network
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
base64 bash expand gcc hajime lolbin masquerade rust
Link:
https://www.filescan.io/uploads/69c9cf942346b9da57af1633/reports/3ddad7bd-77fe-4f1b-99eb-5b2019589f5e/overview
Verdict:
Unknown
File Type:
elf.32.le
Link:
https://opentip.kaspersky.com/a497cd58c9107b0bf11639ccdf2b12310d6a9aeabb6dadbd1e71eba042f8efea/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/4f8d47e6-488f-41ba-9350-c66ab6fe98e2
Behavior Graph:
Download SVG
%3 guuid=190817cf-1600-0000-ba78-c29b9e0e0000 pid=3742 /usr/bin/sudo guuid=a8a8c6d0-1600-0000-ba78-c29ba50e0000 pid=3749 /tmp/sample.bin guuid=190817cf-1600-0000-ba78-c29b9e0e0000 pid=3742->guuid=a8a8c6d0-1600-0000-ba78-c29ba50e0000 pid=3749 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/5c5a224b-9fe7-4b9f-bedd-7b22ec6259e7
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1890713
Signature
Connects to many ports of the same IP (likely port scanning)
Drops invisible ELF files
Executes the "crontab" command typically for achieving persistence
Opens /proc/net/* files useful for finding connected devices and routers
Opens /sys/class/net/* files useful for querying network interface information
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
Writes identical ELF files to multiple locations
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1890713 Sample: wlan.arm5.elf Startdate: 30/03/2026 Architecture: LINUX Score: 84 63 23.28.66.155, 23, 37215, 52869 WOW-INTERNETUS United States 2->63 65 169.236.5.70, 23, 37215, 52869 UNIVERSITY-OF-CALIFORNIA-MERCEDUS United States 2->65 67 15 other IPs or domains 2->67 71 Yara detected Mirai 2->71 73 Connects to many ports of the same IP (likely port scanning) 2->73 9 wlan.arm5.elf 2->9         started        13 systemd snapd-env-generator 2->13         started        15 systemd snapd-env-generator 2->15         started        17 4 other processes 2->17 signatures3 process4 file5 55 /var/cache/.update-helper, ELF 9->55 dropped 57 /usr/share/.dbus-helper, ELF 9->57 dropped 59 /usr/lib/.libsystemd.so, ELF 9->59 dropped 79 Sample tries to set files in /etc globally writable 9->79 81 Writes identical ELF files to multiple locations 9->81 83 Drops invisible ELF files 9->83 19 wlan.arm5.elf sh 9->19         started        21 wlan.arm5.elf sh 9->21         started        23 wlan.arm5.elf 9->23         started        26 4 other processes 9->26 signatures6 process7 signatures8 28 sh crontab 19->28         started        32 sh 19->32         started        34 sh update-rc.d 21->34         started        75 Opens /sys/class/net/* files useful for querying network interface information 23->75 77 Opens /proc/net/* files useful for finding connected devices and routers 23->77 36 wlan.arm5.elf 23->36         started        38 wlan.arm5.elf 23->38         started        40 wlan.arm5.elf wlan.arm5.elf 26->40         started        42 sh systemctl 26->42         started        44 sh systemctl 26->44         started        46 2 other processes 26->46 process9 file10 61 /var/spool/cron/crontabs/tmp.Fbt5pW, ASCII 28->61 dropped 85 Sample tries to persist itself using cron 28->85 87 Executes the "crontab" command typically for achieving persistence 28->87 48 sh crontab 32->48         started        51 sh grep 32->51         started        89 Sample tries to persist itself using System V runlevels 34->89 53 update-rc.d systemctl 34->53         started        signatures11 process12 signatures13 69 Executes the "crontab" command typically for achieving persistence 48->69
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a497cd58c9107b0bf11639ccdf2b12310d6a9aeabb6dadbd1e71eba042f8efea
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a497cd58c9107b0bf11639ccdf2b12310d6a9aeabb6dadbd1e71eba042f8efea/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-03-30 01:19:19 UTC
File Type:
ELF32 Little (Exe)
AV detection:
6 of 24 (25.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=usl42wgjcb5qx4iwhhgn6kysgegwvgxkxnw23pi6ohv2aqxy57va._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
antivm credential_access defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/260330-bpm1csfw3p/
Behaviour
Reads runtime system information
Writes file to shm directory
Writes file to tmp directory
Changes its process name
Checks CPU configuration
Reads CPU attributes
Reads system network configuration
Modifies Bash startup script
Reads process memory
Creates/modifies Cron job
Creates/modifies environment variables
Modifies init.d
Modifies rc script
Modifies systemd
Reads network interface configuration
Reads system routing table
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/a497cd58c9107b0bf11639ccdf2b12310d6a9aeabb6dadbd1e71eba042f8efea

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:APT_Bitter_ZxxZ_Downloader
Create hunting rule
Author:SECUINFRA Falcon Team (@SI_FalconTeam)
Description:Detects Bitter (T-APT-17) ZxxZ Downloader
Reference:https://www.secuinfra.com/en/techtalk/whatever-floats-your-boat-bitter-apt-continues-to-target-bangladesh
Rule name:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:F01_s1ckrule
Create hunting rule
Author:s1ckb017
Rule name:Linux_Generic_Threat_1ac392ca
Create hunting rule
Author:Elastic Security
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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
Rule name:WHIRLPOOL_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for WhirlPool constants

File information

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

Web download

Mirai

elf a497cd58c9107b0bf11639ccdf2b12310d6a9aeabb6dadbd1e71eba042f8efea

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3795966/
  
Delivery method
Distributed via web download

Comments