MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fcf5437a7884cdecc7fd0f9b88bf6e33ec02748caedea247732db9ad3993e5fc. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fcf5437a7884cdecc7fd0f9b88bf6e33ec02748caedea247732db9ad3993e5fc
SHA3-384 hash: f377d5215f890116fa2be28830135eb286deace408690879dd1c53f550ca3e685d43d36258d02a074714e0b9e0baebf0
SHA1 hash: 81972cbabd7f32d22e4d27406fa48830f24007f3
MD5 hash: 291c556b407d094b85727b2a33566588
humanhash: victor-shade-march-wolfram
File name:fcf5437a7884cdecc7fd0f9b88bf6e33ec02748caedea247732db9ad3993e5fc.elf
Download: download sample
Signature Mirai
Create hunting rule
File size:80'512 bytes
First seen:2026-08-12 04:28:47 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:RN30qC0bt84UggbRwN3H5pxCxpaWYPx8LcJFVgpzH50r4:3LCs+4Fzl/gg/GLr50s
TLSH T1A27312AB7A53EDE9C551843EE1CCD347CE0BA56210EC94F387AA497461D62873352F0B
TrID 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12)
49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika elf
Reporter whack_sh
Tags:elf exe mirai UPX whack.sh
File size (compressed) :80'512 bytes
File size (de-compressed) :232'891 bytes
Format:linux/arm
Unpacked file: 63ef1254493c2ee23b9902bcdef303ed8192d109c9aadde7ee35def4b869aaa7

Intelligence

File Origin
# of uploads :
1
# of downloads :
107
Origin country :
US US
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/bc491db1-6228-4765-a1af-6ad5c17492b4/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Creating a file in the %temp% directory
Changes access rights for a file
Runs as daemon
Receives data from a server
Changes the time when the file was created, accessed, or modified
Kills processes
Opens a port
Connection attempt
Launching a process
Changes access rights for a written file
Creating a file
Sets a written file as executable
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a7bf6a0c008a3333ee277bc/reports/4560bce1-b466-4b9a-998d-63cad51969fc/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/f04bd076-2e89-4944-85cf-ceba00d66780
Behavior Graph:
Download SVG
%3 guuid=940d0085-1c00-0000-f666-74ae6b0b0000 pid=2923 /usr/bin/sudo guuid=29311688-1c00-0000-f666-74ae740b0000 pid=2932 /tmp/sample.bin guuid=940d0085-1c00-0000-f666-74ae6b0b0000 pid=2923->guuid=29311688-1c00-0000-f666-74ae740b0000 pid=2932 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fb739fc3-485c-468f-9d37-92fd7c7a65ad
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/fcf5437a7884cdecc7fd0f9b88bf6e33ec02748caedea247732db9ad3993e5fc
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fcf5437a7884cdecc7fd0f9b88bf6e33ec02748caedea247732db9ad3993e5fc/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7t2ug6tyqtg6zr75b6nyrp3ogpwae5emv3pker3tfw422omt4x6a._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
credential_access defense_evasion discovery execution persistence privilege_escalation upx
Link:
https://tria.ge/reports/260812-e4d8jsyekd/
Behaviour
Command and Scripting Interpreter: Unix Shell
Reads runtime system information
Reads system network configuration
Reads process memory
UPX packed file
Creates/modifies Cron job
Enumerates active TCP sockets
Enumerates running processes
Modifies init.d
Modifies systemd
Write file to user bin folder
Writes file to system bin folder
Modifies Watchdog functionality
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/fcf5437a7884cdecc7fd0f9b88bf6e33ec02748caedea247732db9ad3993e5fc

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:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
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:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

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

Web download

Mirai

elf fcf5437a7884cdecc7fd0f9b88bf6e33ec02748caedea247732db9ad3993e5fc

(this sample)

Mirai

elf 63ef1254493c2ee23b9902bcdef303ed8192d109c9aadde7ee35def4b869aaa7

  
Delivery method
Distributed via web download
  
Dropping
SHA256 63ef1254493c2ee23b9902bcdef303ed8192d109c9aadde7ee35def4b869aaa7
  
Dropping
MD5 90a69ebc3c8119ef7ad5d672b5a4e2e5

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