MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1
SHA3-384 hash: 33732af20d1bb62cf0e094ee036ffd8eef9090bdf4f7f1cfe5f144802438b7ff830e1a1924c3b654b8e3fe617f4380e7
SHA1 hash: 257ce62a617475cdf262f75c9755c1367f1f5909
MD5 hash: 14f5790fe9b1454cef8dc1b4c15bfbd0
humanhash: finch-sad-network-hawaii
File name:zero.armv7l
Download: download sample
Signature Mirai
Create hunting rule
File size:53'368 bytes
First seen:2026-06-21 02:31:51 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:JkF6Nb/j2/Xu4rNzTY1if/natW4IQIWOI7CZLa:Jkw/jaXNvzae9WILa
TLSH T14F3302ABA10278BAC4205DE43EFD6755E5241BBCD0DFA1520F84C2CC5E9E0479AF0E53
TrID 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12)
49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika elf
Reporter abuse_ch
Tags:elf mirai UPX
File size (compressed) :53'368 bytes
File size (de-compressed) :132'572 bytes
Format:linux/arm
Unpacked file: 99f79a2e804f5387eaf38175dc683020a973cb005258b43ec8ead59b5b9b8eba

Intelligence

File Origin
# of uploads :
1
# of downloads :
62
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/be0df027-cb70-4cb0-9cf5-5dbc54203b3f/
Detection(s):
SecuriteInfo.com.Linux.Mirai.9785.7445.24117.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Connection attempt
Receives data from a server
Runs as daemon
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a374d379799578a6c4348e4/reports/35862be8-4d51-4be3-9f9d-a44e266418cf/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
29
Number of processes launched:
5
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1
Behaviour
Information Gathering
Botnet C2s
TCP botnet C2(s):
type:Mirai 31.56.209.229:1791
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-06-20T23:39:00Z UTC
Last seen:
2026-06-22T23:48:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.r HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/1c723f48-bdfc-43be-955f-2f5627ab0daf
Behavior Graph:
Download SVG
%3 guuid=f372b860-1900-0000-6c70-3e10c00e0000 pid=3776 /usr/bin/sudo guuid=bd96ad62-1900-0000-6c70-3e10cb0e0000 pid=3787 /tmp/sample.bin guuid=f372b860-1900-0000-6c70-3e10c00e0000 pid=3776->guuid=bd96ad62-1900-0000-6c70-3e10cb0e0000 pid=3787 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c634538f-625d-4631-9eca-3567cdb861e1
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-06-21 03:56:46 UTC
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vgnbkio2734z77xwjykfmn4oanjs3wfgdlgzbxrt5hwfesk6tgyq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:lzrd botnet defense_evasion discovery upx
Link:
https://tria.ge/reports/260621-c1gs6aaz8n/
Behaviour
Reads runtime system information
Modifies Watchdog functionality
Family: Mirai
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/a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1

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 a99a1521dafef99ffef64e1456378e03532dd8a61acd90de33e9ec52495e99b1

(this sample)

Mirai

elf 99f79a2e804f5387eaf38175dc683020a973cb005258b43ec8ead59b5b9b8eba

  
URLhaus
https://urlhaus.abuse.ch/url/3857824/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 99f79a2e804f5387eaf38175dc683020a973cb005258b43ec8ead59b5b9b8eba
  
Dropping
MD5 6dc7c725ecaddb802719e55f6ad501ff

Comments