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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31628a457ccf9220d56ebdca431d1c2ed5ffd8dbe412b39ef12ac362c7f7a95b. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31628a457ccf9220d56ebdca431d1c2ed5ffd8dbe412b39ef12ac362c7f7a95b
SHA3-384 hash: 43be56debaac2a0c9edf24654ba40f3a57a1e9c817eda98376dd51dec7ad81693c92252c3fe2fd327df112b66be9f56d
SHA1 hash: 248651d064571ef9ee441156cca5af1790065da9
MD5 hash: 939ab5941b77a2674d64f4a297366576
humanhash: nitrogen-nuts-west-red
File name:reaver.mips
Download: download sample
Signature Mirai
Create hunting rule
File size:75'740 bytes
First seen:2026-08-29 04:25:23 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:lRYDCtBxuZQWOGZgxbQ+ZBYbi6eLVAXzjzrV1cn:rYSzItha3ZBY+6MOzvrV1k
TLSH T14F73026090035347C2A2E33B8BAD4B505F30DA7289535A48BD5BCE85D5C99EE2CB1CFC
Magika unknown
Reporter abuse_ch
Tags:elf UPX
File size (compressed) :75'740 bytes
File size (de-compressed) :244'776 bytes
Format:linux/mips
Unpacked file: 5d7d7c4c8f67db20efa5b5bc3ca2daae643daee229421d22969f9fcb270eba20

Intelligence

File Origin
# of uploads :
1
# of downloads :
80
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/8a466c72-bb2d-4fea-bef7-7e07b7cc4ebe/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Opens a port
Sets a written file as executable
Launching a process
Connection attempt
Creating a process from a recently created file
Changes the time when the file was created, accessed, or modified
Gains root access
Changes owner for a written file
Changes access rights for a written file
Creating a file
Creates or modifies symbolic links
Substitutes an application name
Writes files to system directory
Creates or modifies files in /cron to set up autorun
Creates or modifies files to set up autorun
Deleting of the original file
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
masquerade packed upx
Link:
https://www.filescan.io/uploads/6a925f667eb9e2a33ac8634c/reports/8ff20540-3e00-4fba-8250-a657116ccb8f/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
UPX
Botnet:
unknown
Number of open files:
7
Number of processes launched:
5
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/31628a457ccf9220d56ebdca431d1c2ed5ffd8dbe412b39ef12ac362c7f7a95b
Behaviour
Information Gathering
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-08-29T02:14:00Z UTC
Last seen:
2026-08-30T21:52:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/31628a457ccf9220d56ebdca431d1c2ed5ffd8dbe412b39ef12ac362c7f7a95b/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/abaf8c7e-08ca-47b7-8419-3034f4b4fd1f
Behavior Graph:
Download SVG
%3 guuid=7ddcb1d7-1800-0000-fff0-4922aa080000 pid=2218 /usr/bin/sudo guuid=0709f4d9-1800-0000-fff0-4922b2080000 pid=2226 /tmp/sample.bin guuid=7ddcb1d7-1800-0000-fff0-4922aa080000 pid=2218->guuid=0709f4d9-1800-0000-fff0-4922b2080000 pid=2226 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/28b643cb-0d84-4fbf-853e-cfb806751381
Result
Threat name:
Gafgyt, Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1965656
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates /etc/ld.so.preload
Drops files in suspicious directories
Executes the "crontab" command typically for achieving persistence
Found malware configuration
Found strings related to Crypto-Mining
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
Protects files from modification
Sample deletes itself
Sample is packed with UPX
Sample reads /proc/mounts (often used for finding a writable filesystem)
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
Writes identical ELF files to multiple locations
Yara detected Gafgyt
Yara detected Mirai
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1965656 Sample: reaver.mips.elf Startdate: 29/08/2026 Architecture: LINUX Score: 100 112 176.65.139.137, 36200, 36202, 7777 STORMINDUSTRIESHostingServicesUS Netherlands 2->112 114 217.60.195.187, 1900 NETPOOLIN Netherlands 2->114 116 daisy.ubuntu.com 2->116 128 Found malware configuration 2->128 130 Malicious sample detected (through community Yara rule) 2->130 132 Antivirus detection for dropped file 2->132 134 6 other signatures 2->134 11 reaver.mips.elf 2->11         started        15 python3.8 dpkg 2->15         started        signatures3 process4 file5 102 /var/lib/dhcpcd-monitor.bak, ELF 11->102 dropped 104 /usr/lib/dhcpcd-monitor, ELF 11->104 dropped 106 /root/.bashrc, ASCII 11->106 dropped 108 14 other malicious files 11->108 dropped 140 Found strings related to Crypto-Mining 11->140 142 Sample tries to set files in /etc globally writable 11->142 144 Writes identical ELF files to multiple locations 11->144 146 8 other signatures 11->146 17 reaver.mips.elf 11->17         started        20 reaver.mips.elf sh 11->20         started        22 reaver.mips.elf exe 11->22         started        24 16 other processes 11->24 signatures6 process7 file8 100 /tmp/reaver.mips.elf.salt, data 17->100 dropped 27 reaver.mips.elf 17->27         started        29 reaver.mips.elf 17->29         started        45 2 other processes 17->45 31 sh crontab 20->31         started        35 sh 20->35         started        37 reaver.mips.elf 22->37         started        39 chattr chattr 22->39         started        41 reaver.mips.elf 22->41         started        136 Protects files from modification 24->136 43 sh crontab 24->43         started        signatures9 process10 file11 47 reaver.mips.elf dhcpcd-monitor 27->47         started        49 reaver.mips.elf dhcpcd-monitor 27->49         started        51 reaver.mips.elf dhcpcd-monitor 27->51         started        53 reaver.mips.elf 29->53         started        55 reaver.mips.elf 29->55         started        57 reaver.mips.elf 29->57         started        110 /var/spool/cron/crontabs/tmp.MEux8o, ASCII 31->110 dropped 118 Sample tries to persist itself using cron 31->118 120 Executes the "crontab" command typically for achieving persistence 31->120 59 sh crontab 35->59         started        122 Protects files from modification 37->122 signatures12 process13 signatures14 62 dhcpcd-monitor exe 47->62         started        64 dhcpcd-monitor chattr 47->64         started        67 dhcpcd-monitor chattr 47->67         started        75 5 other processes 47->75 69 dhcpcd-monitor exe 49->69         started        71 dhcpcd-monitor chattr 49->71         started        77 6 other processes 49->77 73 dhcpcd-monitor exe 51->73         started        79 7 other processes 51->79 138 Executes the "crontab" command typically for achieving persistence 59->138 process15 signatures16 81 dhcpcd-monitor chattr 62->81         started        84 dhcpcd-monitor 62->84         started        86 dhcpcd-monitor 62->86         started        94 4 other processes 62->94 124 Protects files from modification 64->124 88 dhcpcd-monitor chattr 69->88         started        96 6 other processes 69->96 90 dhcpcd-monitor chattr 73->90         started        92 dhcpcd-monitor chattr 73->92         started        98 5 other processes 73->98 process17 signatures18 126 Protects files from modification 81->126
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/31628a457ccf9220d56ebdca431d1c2ed5ffd8dbe412b39ef12ac362c7f7a95b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31628a457ccf9220d56ebdca431d1c2ed5ffd8dbe412b39ef12ac362c7f7a95b/
Threat name:
Linux.PUA.Maltiverza
Create hunting rule
Status:
Malicious
First seen:
2026-08-29 04:26:24 UTC
File Type:
ELF32 Big (Exe)
AV detection:
13 of 24 (54.17%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gfriurl4z6jcbvloxxfeghi4f3k77wg34qjlhhxrflbwfr7xvfnq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution persistence privilege_escalation upx
Link:
https://tria.ge/reports/260829-e2kybawdph/
Behaviour
Reads runtime system information
System Network Configuration Discovery
Changes its process name
Reads system network configuration
Modifies Bash startup script
UPX packed file
Creates/modifies Cron job
Creates/modifies environment variables
Enumerates active TCP sockets
Modifies init.d
Modifies rc script
Modifies systemd
Deletes itself
Modifies the /etc/hosts DNS resolution file
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/31628a457ccf9220d56ebdca431d1c2ed5ffd8dbe412b39ef12ac362c7f7a95b

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 31628a457ccf9220d56ebdca431d1c2ed5ffd8dbe412b39ef12ac362c7f7a95b

(this sample)

Mirai

elf 5d7d7c4c8f67db20efa5b5bc3ca2daae643daee229421d22969f9fcb270eba20

  
URLhaus
https://urlhaus.abuse.ch/url/3909457/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 5d7d7c4c8f67db20efa5b5bc3ca2daae643daee229421d22969f9fcb270eba20
  
Dropping
MD5 915761368e2aa5ce43608722be893192

Comments