MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a31c290b388a56d228f60d1a4afccaff1c18722710712dbe718167bf227c786a. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a31c290b388a56d228f60d1a4afccaff1c18722710712dbe718167bf227c786a
SHA3-384 hash: 002a85ef391cbb8b267783bc16bbb7ce1fa229e54c3181ed9bc80a4ca16bdd7cade9865ac4d6dd1b8a6075bdaf0cca6b
SHA1 hash: 671a83065eca5e800d9143dc3bea08b053f40b12
MD5 hash: e6cc767efbc754e170361e4868d52818
humanhash: papa-florida-oklahoma-indigo
File name:arm7.uhavenobotsxd
Download: download sample
Signature Mirai
Create hunting rule
File size:214'144 bytes
First seen:2026-01-01 12:12:53 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 6144:4UfmaqjNv4d/YntvuzDztzEA5acIJYRoUatoHGj7jU2v:/fTqjNwxYnFKEA5arJYRoUatz/U
TLSH T157244B56BD91DF11D5C221BAFAAF418D33131BB8D3FA7102DD206F61638A99B0E7B502
telfhash t15511ab100dac573ef1d558fec7b7a93b6a2811b62b113421424bba3e6e13ac15571827
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
37
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

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:
  2.5/10
Confidence:
100%
Tags:
base64 expand fingerprint gcc lolbin rust
Link:
https://www.filescan.io/uploads/695664db2fb7bb52ca84081e/reports/5ebcf8ff-8332-4d5b-bd0b-ad514b7c2e27/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-01T09:24:00Z UTC
Last seen:
2026-01-01T09:36:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/a31c290b388a56d228f60d1a4afccaff1c18722710712dbe718167bf227c786a/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/50eb73fd-0733-445d-8d1e-58cbc3e27d33
Behavior Graph:
Download SVG
%3 guuid=2a8aa34e-1a00-0000-db46-362bd10c0000 pid=3281 /usr/bin/sudo guuid=e1dfa450-1a00-0000-db46-362bd70c0000 pid=3287 /tmp/sample.bin guuid=2a8aa34e-1a00-0000-db46-362bd10c0000 pid=3281->guuid=e1dfa450-1a00-0000-db46-362bd70c0000 pid=3287 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2a85aa08-d8f5-4874-b466-ae94ca89d3ea
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1843081
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 pipes script to sh (AV evasion)
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 signatures2 2 Behavior Graph ID: 1843081 Sample: arm7.uhavenobotsxd.elf Startdate: 01/01/2026 Architecture: LINUX Score: 100 96 Multi AV Scanner detection for submitted file 2->96 98 Sample pipes script to sh (AV evasion) 2->98 10 arm7.uhavenobotsxd.elf 2->10         started        12 udisksd dumpe2fs 2->12         started        14 udisksd dumpe2fs 2->14         started        16 76 other processes 2->16 process3 process4 18 arm7.uhavenobotsxd.elf 10->18         started        file5 72 /var/tmp/.monitor, POSIX 18->72 dropped 74 /var/spool/cron/root, ASCII 18->74 dropped 76 /var/spool/cron/crontabs/root, ASCII 18->76 dropped 78 7 other malicious files 18->78 dropped 100 Sample tries to set files in /etc globally writable 18->100 102 Sample tries to persist itself using /etc/profile 18->102 104 Drops files in suspicious directories 18->104 106 3 other signatures 18->106 22 arm7.uhavenobotsxd.elf sh 18->22         started        24 arm7.uhavenobotsxd.elf sh 18->24         started        26 arm7.uhavenobotsxd.elf sh 18->26         started        28 70 other processes 18->28 signatures6 process7 signatures8 31 sh S99network 22->31         started        33 sh .monitor 24->33         started        35 sh cp 26->35         started        126 Sample tries to kill multiple processes (SIGKILL) 28->126 39 sh crontab 28->39         started        41 sh cp 28->41         started        43 sh cp 28->43         started        45 63 other processes 28->45 process9 file10 47 S99network 31->47         started        49 .monitor 33->49         started        80 /usr/bin/.update, ELF 35->80 dropped 110 Writes identical ELF files to multiple locations 35->110 112 Drops invisible ELF files 35->112 114 Drops files in suspicious directories 35->114 82 /var/spool/cron/crontabs/tmp.sReGW5, ASCII 39->82 dropped 116 Sample tries to persist itself using cron 39->116 118 Executes the "crontab" command typically for achieving persistence 39->118 84 /var/.update, ELF 41->84 dropped 86 /mnt/.update, ELF 43->86 dropped 88 /var/log/.update, ELF 45->88 dropped 90 /root/.update, ELF 45->90 dropped 92 /media/.update, ELF 45->92 dropped 94 /home/.update, ELF 45->94 dropped 120 Sample tries to kill multiple processes (SIGKILL) 45->120 122 Sample deletes itself 45->122 124 Terminates several processes with shell command 'killall' 45->124 51 sh crontab 45->51         started        54 sh arm7.uhavenobotsxd.elf 45->54         started        signatures11 process12 signatures13 56 S99network arm7.uhavenobotsxd.elf 47->56         started        58 S99network arm7.uhavenobotsxd.elf 47->58         started        60 S99network arm7.uhavenobotsxd.elf 47->60         started        68 97 other processes 47->68 62 .monitor arm7.uhavenobotsxd.elf 49->62         started        64 .monitor arm7.uhavenobotsxd.elf 49->64         started        66 .monitor arm7.uhavenobotsxd.elf 49->66         started        70 95 other processes 49->70 108 Executes the "crontab" command typically for achieving persistence 51->108 process14
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a31c290b388a56d228f60d1a4afccaff1c18722710712dbe718167bf227c786a
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a31c290b388a56d228f60d1a4afccaff1c18722710712dbe718167bf227c786a/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/a31c290b388a56d228f60d1a4afccaff1c18722710712dbe718167bf227c786a
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-01 12:13:16 UTC
File Type:
ELF32 Little (Exe)
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=umocsczyrjlnekhwbunev7gk74obq4rhcbys3ptrqft36it4pbva._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/260101-pdyvdabt9d/
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
Looks up external IP address via web service
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/ba461113-e9a3-49b6-83e2-c1822c19c50a
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/a31c290b388a56d228f60d1a4afccaff1c18722710712dbe718167bf227c786a

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:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
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 a31c290b388a56d228f60d1a4afccaff1c18722710712dbe718167bf227c786a

(this sample)

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

Comments