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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8aac20eac37f21e01352c0ab95e2db43da09fb5d6d7a8ae64f7b7927a2ba5c04. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8aac20eac37f21e01352c0ab95e2db43da09fb5d6d7a8ae64f7b7927a2ba5c04
SHA3-384 hash: 9d3e088b3025ab0fba2e5a134e39ea45ff2ca71bac67a0e25897c9d9832e58665f6e1cd4393641a1e91b71bb8acce4c3
SHA1 hash: 58aea75387d01d147a34360ce7bb2239c74439a3
MD5 hash: 1b656b1ae258db6e3d77fe308f239bec
humanhash: monkey-sierra-autumn-colorado
File name:arm5
Download: download sample
Signature Mirai
Create hunting rule
File size:112'036 bytes
First seen:2026-09-24 16:49:26 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:GE8OPBCS/JgpD8Fv1jjEFeCv0RymkJWJMVFsDiWw:GiC58jjE8Cv0RxWTWw
TLSH T1A8B302A1A95351AEF25438FCFBDC06A4DA6FEF7E944C16330A4087A496D801A53EC7B1
Magika elf
Reporter abuse_ch
Tags:elf mirai UPX
File size (compressed) :112'036 bytes
File size (de-compressed) :256'380 bytes
Format:linux/arm
Unpacked file: 829a47891ab307bc5ee59b0c46cc3402cd54d6afc3eb414aea750d95aabcf36b

Intelligence

File Origin
# of uploads :
1
# of downloads :
61
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/d4405828-8b17-4a95-bd6e-e067f9685041/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Opens a port
Launching a process
Deletes a file
Sets a written file as executable
Sends data to a server
Runs as daemon
Creates directories
Changes access rights for a written file
Connection attempt
Manages services
Receives data from a server
Changes the time when the file was created, accessed, or modified
Mounts file systems
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Writes files to system directory
Creates or modifies files to set up autorun
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6ab554d14f0d652e156e2eb2/reports/fc20c951-2493-4921-8a08-56ed086a56b5/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-09-24T13:45:00Z UTC
Last seen:
2026-09-25T00:00:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/8aac20eac37f21e01352c0ab95e2db43da09fb5d6d7a8ae64f7b7927a2ba5c04/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/d99c9d9e-6840-4e1b-8f25-a4f6c81e1558
Behavior Graph:
Download SVG
%3 guuid=85f7b712-1900-0000-947d-3a47580d0000 pid=3416 /usr/bin/sudo guuid=c3d7e515-1900-0000-947d-3a475e0d0000 pid=3422 /tmp/sample.bin guuid=85f7b712-1900-0000-947d-3a47580d0000 pid=3416->guuid=c3d7e515-1900-0000-947d-3a475e0d0000 pid=3422 execve
Malware family:
Ngioweb
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fa075f33-2257-4ba8-9a78-53506b4598e1
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1977835
Signature
Drops files in suspicious directories
Executes the "crontab" command typically for achieving persistence
Sample deletes itself
Sample is packed with UPX
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
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 ELF files to hidden directories
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1977835 Sample: arm5.elf Startdate: 24/09/2026 Architecture: LINUX Score: 88 176 217.60.103.135, 35342, 54914, 54916 HOSTSNAP-NETWORK-HostSNAPLLCUS Switzerland 2->176 178 Yara detected Mirai 2->178 180 Sample is packed with UPX 2->180 14 arm5.elf 2->14         started        16 systemd sysd 2->16         started        18 systemd sysd 2->18         started        20 67 other processes 2->20 signatures3 process4 process5 22 arm5.elf 14->22         started        24 sysd 16->24         started        26 sysd 18->26         started        28 sysd 20->28         started        30 sysd 20->30         started        32 sysd 20->32         started        34 8 other processes 20->34 process6 36 arm5.elf 22->36         started        38 sysd 24->38         started        40 sysd 26->40         started        42 sysd 28->42         started        44 sysd 30->44         started        46 sysd 32->46         started        48 sysd 34->48         started        50 sysd 34->50         started        52 6 other processes 34->52 process7 54 arm5.elf 36->54         started        58 sysd 38->58         started        60 sysd 40->60         started        62 sysd 42->62         started        64 sysd 44->64         started        66 sysd 46->66         started        68 sysd 48->68         started        70 sysd 50->70         started        72 6 other processes 52->72 file8 168 /etc/rc.local, POSIX 54->168 dropped 170 /etc/init.d/system-service, POSIX 54->170 dropped 182 Sample tries to kill multiple processes (SIGKILL) 54->182 184 Sample tries to set files in /etc globally writable 54->184 186 Writes ELF files to hidden directories 54->186 190 2 other signatures 54->190 74 10 other processes 54->74 188 Sample deletes itself 58->188 77 7 other processes 58->77 79 7 other processes 60->79 81 7 other processes 62->81 83 7 other processes 64->83 85 7 other processes 66->85 87 7 other processes 68->87 89 7 other processes 70->89 172 /var/tmp/.cache/sysd, ELF 72->172 dropped 91 42 other processes 72->91 signatures9 process10 signatures11 93 7 other processes 74->93 97 4 other processes 77->97 192 Sample reads /proc/mounts (often used for finding a writable filesystem) 79->192 99 4 other processes 79->99 101 4 other processes 81->101 103 4 other processes 83->103 105 4 other processes 85->105 107 4 other processes 87->107 109 4 other processes 89->109 111 24 other processes 91->111 process12 file13 174 /var/spool/cron/crontabs/tmp.NcWlTn, ASCII 93->174 dropped 194 Sample tries to persist itself using cron 93->194 196 Sample tries to persist itself using System V runlevels 93->196 127 2 other processes 93->127 113 systemctl systemd-sysv-install 97->113         started        115 systemctl systemd-sysv-install 99->115         started        117 systemctl systemd-sysv-install 101->117         started        119 systemctl systemd-sysv-install 103->119         started        121 systemctl systemd-sysv-install 105->121         started        123 systemctl systemd-sysv-install 107->123         started        125 systemctl systemd-sysv-install 109->125         started        198 Executes the "crontab" command typically for achieving persistence 111->198 130 6 other processes 111->130 signatures14 process15 signatures16 132 systemd-sysv-install update-rc.d 113->132         started        134 2 other processes 113->134 136 3 other processes 115->136 138 3 other processes 117->138 140 3 other processes 119->140 142 3 other processes 121->142 144 3 other processes 123->144 146 3 other processes 125->146 200 Executes the "crontab" command typically for achieving persistence 127->200 148 18 other processes 130->148 process17 process18 150 update-rc.d systemctl 132->150         started        152 update-rc.d systemctl 134->152         started        154 2 other processes 136->154 156 2 other processes 138->156 158 2 other processes 140->158 160 2 other processes 142->160 162 2 other processes 144->162 164 2 other processes 146->164 166 12 other processes 148->166
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/8aac20eac37f21e01352c0ab95e2db43da09fb5d6d7a8ae64f7b7927a2ba5c04
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8aac20eac37f21e01352c0ab95e2db43da09fb5d6d7a8ae64f7b7927a2ba5c04/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-09-24 16:50:30 UTC
File Type:
ELF32 Little (Exe)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rkwcb2wdp4q6ae2sycvzlyw3ipnat625nv5ivzsppn4spiv2lqca._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/260924-vce9jaxbme/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
System Network Configuration Discovery
Changes its process name
Reads system network configuration
Modifies Bash startup script
Reads process memory
Creates/modifies Cron job
Creates/modifies environment variables
Enumerates active TCP sockets
Enumerates running processes
Modifies init.d
Modifies rc script
Modifies systemd
Modifies the /etc/hosts DNS resolution file
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:ELF_IoT_DVR_Botnet_Hama_UPX
Create hunting rule
Author:Serhii Kocherhan
Description:Detects packed and unpacked ELF IoT/DVR botnet variants targeting UPX compression structures and uncompressed code
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 8aac20eac37f21e01352c0ab95e2db43da09fb5d6d7a8ae64f7b7927a2ba5c04

(this sample)

Mirai

elf 829a47891ab307bc5ee59b0c46cc3402cd54d6afc3eb414aea750d95aabcf36b

  
Dropping
SHA256 829a47891ab307bc5ee59b0c46cc3402cd54d6afc3eb414aea750d95aabcf36b
  
Dropping
MD5 d23bb5f1212934ded070dae26c4bcbaf
  
URLhaus
https://urlhaus.abuse.ch/url/3921991/
  
Delivery method
Distributed via web download

Comments