MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4591c54052c787376ea64aae9e4297bedf835551d9e1c7db3c2e5e3f90bff02a. 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: 12


Intelligence 12 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4591c54052c787376ea64aae9e4297bedf835551d9e1c7db3c2e5e3f90bff02a
SHA3-384 hash: af8224bffb02c60d426ed22ab743ffd64dc9b5334ab8f9324edeb200b43ba6019cb7793dcbb3304af5e03bd6e50411c2
SHA1 hash: f660c24f8c7f6aec661dba2c54ef7cc084571d9a
MD5 hash: e5b351c99fc1a53815d8727b12b088ff
humanhash: lactose-tango-london-massachusetts
File name:x86_64.uhavenobotsxd
Download: download sample
Signature Mirai
Create hunting rule
File size:91'792 bytes
First seen:2025-11-23 22:01:08 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:k5/oaj+aaAci5fTrZyhiSakK1gy5TAoEcvtuoytQOKul7vrN:kBNj+61fqiSm195TAutu9QxulTJ
TLSH T1E0936C0AFAC0D4FCC899C339565FA275C932F46D1236721B87C4FB257C8DE212B2A656
telfhash t1fc3166317d49296471fbfb3ab742e1d0ad621d3412e031f0e873f8e9cf4a38108624a1
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 abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
43
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-10001386-0
Create hunting rule

Unix.Trojan.Mirai-10017351-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Changes the time when the file was created, accessed, or modified
Deletes a file
Receives data from a server
Attempts to kill processes by name
Opens a port
Deleting a recently created file
Sends data to a server
Launching a process
Connection attempt
Sets a written file as executable
Creating a file
Changes access rights for a written file
Runs as daemon
Creating a process from a recently created file
Kills processes
Writes files to system directory
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:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gafgyt mirai
Link:
https://www.filescan.io/uploads/692384316c89728b98260dc1/reports/95bc1222-7893-4dd3-8fce-ae8be84fe59f/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
23
Number of processes launched:
4
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/4591c54052c787376ea64aae9e4297bedf835551d9e1c7db3c2e5e3f90bff02a
Behaviour
Persistence
Process Renaming
Botnet C2s
TCP botnet C2(s):
type:Mirai 94.154.35.153:6969
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2025-11-23T20:08:00Z UTC
Last seen:
2025-11-23T20:36:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4591c54052c787376ea64aae9e4297bedf835551d9e1c7db3c2e5e3f90bff02a/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/975752aa-8006-4c77-86c1-faa2343034c1
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1819662
Signature
Drops files in suspicious directories
Drops invisible ELF files
Executes the "crontab" command typically for achieving persistence
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 deletes itself
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
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
Terminates several processes with shell command 'killall'
Writes identical ELF files to multiple locations
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1819662 Sample: x86_64.uhavenobotsxd.elf Startdate: 23/11/2025 Architecture: LINUX Score: 100 97 94.154.35.153, 40676, 6969 SELECTELRU Ukraine 2->97 99 172.65.228.124, 25565, 48502, 48504 CLOUDFLARENETUS United States 2->99 101 Malicious sample detected (through community Yara rule) 2->101 103 Multi AV Scanner detection for submitted file 2->103 11 x86_64.uhavenobotsxd.elf 2->11         started        signatures3 process4 signatures5 125 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->125 14 x86_64.uhavenobotsxd.elf 11->14         started        process6 file7 89 /var/spool/cron/root, ASCII 14->89 dropped 91 /var/spool/cron/crontabs/root, ASCII 14->91 dropped 93 /root/.bashrc, ASCII 14->93 dropped 95 11 other files (10 malicious) 14->95 dropped 129 Sample tries to set files in /etc globally writable 14->129 131 Sample tries to persist itself using /etc/profile 14->131 133 Drops files in suspicious directories 14->133 135 4 other signatures 14->135 18 x86_64.uhavenobotsxd.elf sh 14->18         started        20 x86_64.uhavenobotsxd.elf sh 14->20         started        22 x86_64.uhavenobotsxd.elf sh 14->22         started        24 26 other processes 14->24 signatures8 process9 signatures10 27 sh S99backup0 18->27         started        29 sh S99backup1 20->29         started        31 sh S99backup2 22->31         started        123 Sample tries to kill multiple processes (SIGKILL) 24->123 33 sh S99network 24->33         started        35 sh cp 24->35         started        39 sh crontab 24->39         started        41 25 other processes 24->41 process11 file12 43 S99backup0 27->43         started        45 S99backup1 29->45         started        47 S99backup2 31->47         started        49 S99network 33->49         started        79 /usr/bin/.update, ELF 35->79 dropped 105 Writes identical ELF files to multiple locations 35->105 107 Drops invisible ELF files 35->107 109 Drops files in suspicious directories 35->109 81 /var/spool/cron/crontabs/tmp.uGv8Q3, ASCII 39->81 dropped 111 Sample tries to persist itself using cron 39->111 113 Executes the "crontab" command typically for achieving persistence 39->113 83 /var/log/.update, ELF 41->83 dropped 85 /var/jbx/shared/.update, ELF 41->85 dropped 87 /boot/.update, ELF 41->87 dropped 115 Sample deletes itself 41->115 117 Terminates several processes with shell command 'killall' 41->117 51 .monitor 41->51         started        53 sh .update 41->53         started        56 sh .update 41->56         started        58 3 other processes 41->58 signatures13 process14 signatures15 60 S99backup0 .update 43->60         started        69 37 other processes 43->69 63 S99backup1 .update 45->63         started        71 35 other processes 45->71 65 S99backup2 .update 47->65         started        73 31 other processes 47->73 67 S99network .update 49->67         started        75 29 other processes 49->75 77 2 other processes 51->77 119 Sample reads /proc/mounts (often used for finding a writable filesystem) 53->119 121 Executes the "crontab" command typically for achieving persistence 58->121 process16 signatures17 127 Sample reads /proc/mounts (often used for finding a writable filesystem) 60->127
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4591c54052c787376ea64aae9e4297bedf835551d9e1c7db3c2e5e3f90bff02a
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4591c54052c787376ea64aae9e4297bedf835551d9e1c7db3c2e5e3f90bff02a/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-23 22:01:25 UTC
File Type:
ELF64 Little (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=iwi4kqcsy6dto3vgjkxj4quxx3pygvkr3hq4pwz4fzpd7ef76ava._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion discovery execution linux persistence privilege_escalation
Link:
https://tria.ge/reports/251123-1xdjbsylcm/
Behaviour
Reads runtime system information
Writes file to shm directory
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Deletes log files
Enumerates running processes
Modifies init.d
Modifies rc script
Write file to user bin folder
Executes dropped EXE
Unexpected DNS network traffic destination
Mirai
Mirai family
Verdict:
Malicious
Tags:
trojan gafgyt mirai Unix.Trojan.Mirai-7640640-0
YARA:
Linux_Trojan_Gafgyt_9e9530a7 Linux_Trojan_Gafgyt_807911a2 Linux_Trojan_Gafgyt_d4227dbf Linux_Trojan_Gafgyt_d996d335 Linux_Trojan_Gafgyt_620087b9 Linux_Trojan_Gafgyt_33b4111a Linux_Trojan_Mirai_6a77af0f Linux_Trojan_Mirai_e0cf29e2
Link:
https://app.threat.zone/submission/0b4cb721-547d-4547-946f-88ee686cd530
Please note that we are no longer able to provide a coverage score for Virus Total.

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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Trojan_Gafgyt_33b4111a
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_620087b9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_807911a2
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_9e9530a7
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d4227dbf
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d996d335
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_6a77af0f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_e0cf29e2
Create hunting rule
Author:Elastic Security
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 4591c54052c787376ea64aae9e4297bedf835551d9e1c7db3c2e5e3f90bff02a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3714269/
  
Delivery method
Distributed via web download

Comments