MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a874fbca4692d90fd9864bb58df89282abf03e75ea9f87bbd44f5a6416c05faf. 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: 8


Intelligence 8 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a874fbca4692d90fd9864bb58df89282abf03e75ea9f87bbd44f5a6416c05faf
SHA3-384 hash: 7850650b2de823051f208cc49c651ab734ced300838da8c68bbb290b617d3344dbbd903e1aa47718364a504fa626e086
SHA1 hash: 03460245f242b580be3fa73fb0757e50cac91034
MD5 hash: bbaa9b630bd356c8e1acdc0d462c90b3
humanhash: violet-shade-happy-march
File name:reaver.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:71'532 bytes
First seen:2026-08-29 02:31:59 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:cCr+DaN9lgBWyeZs8dVSMNudnWHSt0L3USGTagUIQifwyHQXgW/XfwGIFrinouy4:cC192Aygs8mfdGSiqTvUIQiYyHogibIM
TLSH T1286302684032C32CF675A6F5D17BBC2E084562FE32DCE2D4CA8C787BAD6B3891E15241
Magika elf
Reporter abuse_ch
Tags:elf mirai UPX
File size (compressed) :71'532 bytes
File size (de-compressed) :160'788 bytes
Format:linux/i386
Unpacked file: bca426f840d78e4646be1ec26403078f9b52b5c2a34dc26fe0da903f266f7a2b

Intelligence

File Origin
# of uploads :
1
# of downloads :
61
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/79b2b1ee-c59b-4fc8-8d54-6bc4c5a2a745/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Kills processes
Deletes a file
Launching a process
Runs as daemon
Changes owner for a written file
Changes access rights for a written file
Opens a port
Receives data from a server
Changes the time when the file was created, accessed, or modified
Connection attempt
Gains root access
Creating a file
Creates or modifies symbolic links
Deleting a recently created file
Creating a process from a recently created file
Sets a written file as executable
Sends data to a server
Writes files to system subdirectory
Substitutes an application name
Writes files to system directory
Creates or modifies files in /cron to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files in /init.d to set up autorun
Creates or modifies files to set up autorun
Deleting of the original file
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/93f476b9-48cd-47c6-bd96-1c16228acf70
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1965587
Signature
Creates /etc/ld.so.preload
Drops files in suspicious directories
Executes the "crontab" command typically for achieving persistence
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 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 Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1965587 Sample: reaver.x86.elf Startdate: 29/08/2026 Architecture: LINUX Score: 100 125 169.254.169.254, 80 USDOS-USDepartmentofStateUS ZZ 2->125 127 176.65.139.137, 48452, 48454, 48456 STORMINDUSTRIESHostingServicesUS Netherlands 2->127 129 2 other IPs or domains 2->129 143 Malicious sample detected (through community Yara rule) 2->143 145 Multi AV Scanner detection for submitted file 2->145 147 Yara detected Xmrig cryptocurrency miner 2->147 149 Sample is packed with UPX 2->149 15 reaver.x86.elf 2->15         started        signatures3 process4 file5 117 /var/lib/avahi-helper.bak, ELF 15->117 dropped 119 /usr/lib/avahi-helper, ELF 15->119 dropped 121 /root/.bashrc, ASCII 15->121 dropped 123 13 other files (11 malicious) 15->123 dropped 131 Found strings related to Crypto-Mining 15->131 133 Sample tries to set files in /etc globally writable 15->133 135 Writes identical ELF files to multiple locations 15->135 137 7 other signatures 15->137 19 reaver.x86.elf exe 15->19         started        21 reaver.x86.elf sh 15->21         started        23 reaver.x86.elf sh 15->23         started        25 16 other processes 15->25 signatures6 process7 file8 28 exe exe 19->28         started        30 reaver.x86.elf 19->30         started        33 chattr chattr 19->33         started        44 4 other processes 19->44 35 sh crontab 21->35         started        38 sh 21->38         started        40 sh crontab 23->40         started        115 /tmp/reaver.x86.elf.salt, Non-ISO 25->115 dropped 42 reaver.x86.elf 25->42         started        46 3 other processes 25->46 process9 file10 48 exe exe 28->48         started        50 exe 28->50         started        53 chattr chattr 28->53         started        63 4 other processes 28->63 159 Protects files from modification 30->159 113 /var/spool/cron/crontabs/tmp.EY4Y2G, ASCII 35->113 dropped 161 Sample tries to persist itself using cron 35->161 163 Executes the "crontab" command typically for achieving persistence 35->163 55 sh crontab 38->55         started        57 reaver.x86.elf 42->57         started        59 reaver.x86.elf 42->59         started        61 reaver.x86.elf 42->61         started        signatures11 process12 signatures13 65 exe exe 48->65         started        67 exe chattr 48->67         started        70 exe chattr 48->70         started        72 4 other processes 48->72 139 Protects files from modification 50->139 141 Executes the "crontab" command typically for achieving persistence 55->141 process14 signatures15 74 exe exe 65->74         started        76 exe 65->76         started        79 chattr chattr 65->79         started        81 4 other processes 65->81 151 Protects files from modification 67->151 process16 signatures17 83 exe exe 74->83         started        85 exe 74->85         started        88 chattr chattr 74->88         started        90 7 other processes 74->90 157 Protects files from modification 76->157 process18 signatures19 92 exe exe 83->92         started        94 exe chattr 83->94         started        97 exe 83->97         started        99 10 other processes 83->99 153 Protects files from modification 85->153 process20 signatures21 101 exe exe 92->101         started        103 exe chattr 92->103         started        106 exe 92->106         started        108 10 other processes 92->108 165 Protects files from modification 94->165 process22 signatures23 110 exe chattr 101->110         started        155 Protects files from modification 103->155 process24 signatures25 167 Protects files from modification 110->167
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a874fbca4692d90fd9864bb58df89282abf03e75ea9f87bbd44f5a6416c05faf
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a874fbca4692d90fd9864bb58df89282abf03e75ea9f87bbd44f5a6416c05faf/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-29 02:32:24 UTC
File Type:
ELF32 Little (Exe)
AV detection:
11 of 36 (30.56%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vb2pxssgslmq7wmgjo2y36esqkv7aptv5kpypo6uj5ngifwal6xq._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
defense_evasion discovery exection execution linux persistence privilege_escalation upx
Link:
https://tria.ge/reports/260829-c1ezkawakg/
Behaviour
Reads runtime system information
System Network Configuration Discovery
Writes file to tmp directory
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
Executes dropped EXE
Modifies the /etc/hosts DNS resolution file
Modifies the dynamic linker configuration file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a874fbca4692d90fd9864bb58df89282abf03e75ea9f87bbd44f5a6416c05faf

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
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 a874fbca4692d90fd9864bb58df89282abf03e75ea9f87bbd44f5a6416c05faf

(this sample)

Mirai

elf bca426f840d78e4646be1ec26403078f9b52b5c2a34dc26fe0da903f266f7a2b

  
URLhaus
https://urlhaus.abuse.ch/url/3909453/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 bca426f840d78e4646be1ec26403078f9b52b5c2a34dc26fe0da903f266f7a2b
  
Dropping
MD5 90568e189476bea0791f50e5386b2ed2

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