MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3719f7fd896d3de0649cbf6b3e3b41bfbd681d2c275e9adea06fdd434f0b825. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3719f7fd896d3de0649cbf6b3e3b41bfbd681d2c275e9adea06fdd434f0b825
SHA3-384 hash: 17dd1a9d79cf113f32fe30977548f547d2531e845d362af591b820172c87aab162cceb66c8836721f77a6bc2267a398d
SHA1 hash: 2b3fb57dc3185a9fa7e289b81db446c7bf58aef9
MD5 hash: 8351a8bee5055ab3596e7daa20ab5b9e
humanhash: kilo-mississippi-mississippi-nineteen
File name:arm7.uhavenobotsxd
Download: download sample
Signature Mirai
Create hunting rule
File size:133'360 bytes
First seen:2025-12-24 19:12:38 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:b8rOqdq/8PMmQG7Vqazy9i3ICv7svveiIhz7sxrAb:b8rOqs/ZKYazy9i3ICzsvszoxrAb
TLSH T197D32956B9919F11D4C731FAFA9E418933135FB8D3FA71019D206F6123CA99B0FBA212
telfhash t147f04c65f70019d8abc1c26642997996a99d31fa2b1425d7c09d5a0f42326c8a12e90f
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
36
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

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

Unix.Trojan.Mirai-10010119-0
Create hunting rule

Unix.Trojan.Mirai-10010127-0
Create hunting rule

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

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc rust
Link:
https://www.filescan.io/uploads/694c3b4c5ceddcfa3ff6ac8a/reports/32bcb9e2-9107-40f8-bef8-e7fbd0688f9d/overview
Result
Gathering data
Verdict:
Malicious
File Type:
elf.32.le
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/a3719f7fd896d3de0649cbf6b3e3b41bfbd681d2c275e9adea06fdd434f0b825/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/d4e4c60d-b94b-46d4-b190-0046d2d0bc69
Behavior Graph:
Download SVG
%3 guuid=a9011679-1900-0000-cfde-66e0a70b0000 pid=2983 /usr/bin/sudo guuid=3f94e57b-1900-0000-cfde-66e0ae0b0000 pid=2990 /tmp/sample.bin guuid=a9011679-1900-0000-cfde-66e0a70b0000 pid=2983->guuid=3f94e57b-1900-0000-cfde-66e0ae0b0000 pid=2990 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/8055f447-50ab-4e90-9059-cec67728c5e5
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1839030
Signature
Drops files in suspicious directories
Drops invisible ELF files
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
Sample deletes itself
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill a massive number of system processes
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: 1839030 Sample: arm7.uhavenobotsxd.elf Startdate: 24/12/2025 Architecture: LINUX Score: 100 92 216.244.17.19, 10000, 9 WINDSTREAMUS United States 2->92 94 91.108.17.39, 32002 TELEGRAMRU United Kingdom 2->94 96 14 other IPs or domains 2->96 112 Multi AV Scanner detection for submitted file 2->112 11 arm7.uhavenobotsxd.elf 2->11         started        signatures3 process4 signatures5 118 Sample tries to kill multiple processes (SIGKILL) 11->118 120 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->120 14 arm7.uhavenobotsxd.elf 11->14         started        process6 file7 68 /var/spool/cron/root, ASCII 14->68 dropped 70 /var/spool/cron/crontabs/root, ASCII 14->70 dropped 72 /root/.bashrc, ASCII 14->72 dropped 74 7 other files (6 malicious) 14->74 dropped 122 Sample tries to set files in /etc globally writable 14->122 124 Sample tries to persist itself using /etc/profile 14->124 126 Drops files in suspicious directories 14->126 128 4 other signatures 14->128 18 arm7.uhavenobotsxd.elf sh 14->18         started        20 arm7.uhavenobotsxd.elf sh 14->20         started        22 arm7.uhavenobotsxd.elf sh 14->22         started        24 74 other processes 14->24 signatures8 process9 signatures10 27 sh S99network 18->27         started        29 sh .monitor 20->29         started        31 sh cp 22->31         started        114 Sample tries to kill a massive number of system processes 24->114 116 Sample tries to kill multiple processes (SIGKILL) 24->116 35 sh crontab 24->35         started        37 sh cp 24->37         started        39 sh cp 24->39         started        41 67 other processes 24->41 process11 file12 43 S99network 27->43         started        45 .monitor 29->45         started        76 /usr/bin/.update, ELF 31->76 dropped 98 Writes identical ELF files to multiple locations 31->98 100 Drops invisible ELF files 31->100 102 Drops files in suspicious directories 31->102 78 /var/spool/cron/crontabs/tmp.fmZiC3, ASCII 35->78 dropped 104 Sample tries to persist itself using cron 35->104 106 Executes the "crontab" command typically for achieving persistence 35->106 80 /var/jbx/shared/.update, ELF 37->80 dropped 82 /var/log/.update, ELF 39->82 dropped 84 /var/.update, ELF 41->84 dropped 86 /root/.update, ELF 41->86 dropped 88 /mnt/.update, ELF 41->88 dropped 90 3 other malicious files 41->90 dropped 108 Sample deletes itself 41->108 110 Terminates several processes with shell command 'killall' 41->110 47 sh crontab 41->47         started        50 sh arm7.uhavenobotsxd.elf 41->50         started        signatures13 process14 signatures15 52 S99network arm7.uhavenobotsxd.elf 43->52         started        54 S99network arm7.uhavenobotsxd.elf 43->54         started        56 S99network arm7.uhavenobotsxd.elf 43->56         started        64 109 other processes 43->64 58 .monitor arm7.uhavenobotsxd.elf 45->58         started        60 .monitor arm7.uhavenobotsxd.elf 45->60         started        62 .monitor arm7.uhavenobotsxd.elf 45->62         started        66 105 other processes 45->66 130 Executes the "crontab" command typically for achieving persistence 47->130 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a3719f7fd896d3de0649cbf6b3e3b41bfbd681d2c275e9adea06fdd434f0b825
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a3719f7fd896d3de0649cbf6b3e3b41bfbd681d2c275e9adea06fdd434f0b825/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/a3719f7fd896d3de0649cbf6b3e3b41bfbd681d2c275e9adea06fdd434f0b825
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-24 19:13:19 UTC
File Type:
ELF32 Little (Exe)
AV detection:
13 of 36 (36.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=unyz676ys3j54bsjzp3lhy5udp55naosyj26tlpka365inhqxasq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/251224-xxb4qaa16g/
Behaviour
Command and Scripting Interpreter: Unix Shell
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
Creates a large amount of network flows
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/b75745f7-c12c-418c-b3d9-275ea933e474
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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:Linux_Generic_Threat_8299c877
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 a3719f7fd896d3de0649cbf6b3e3b41bfbd681d2c275e9adea06fdd434f0b825

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3686384/
  
Delivery method
Distributed via web download

Comments