MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd. 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: 81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd
SHA3-384 hash: 9264e1c9ef8ad80e91307133c7b7e4a2eed9190bf352a3084d71935d90a102e2ce893079eddecdd4ba1c6c27a1e2bf33
SHA1 hash: c6efb30dca71365ef3349b7fb51964dc19e43b4c
MD5 hash: 4c83ad44b657328c532a96c81dc37028
humanhash: friend-blossom-cat-edward
File name:parm5
Download: download sample
Signature Mirai
Create hunting rule
File size:53'116 bytes
First seen:2026-02-26 14:04:29 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 768:sXCYA5Ic6/38GtCP7ZmMA0llF1Y2kf2P2ilAeInJEeMklYJnZ9tCLiDCwMON/7xn:sXk5e/MiCjZTkf2OilYYv9gWDCuVn
TLSH T1F033D54178826627C2E023BEE6AE558D336573B8C2DF732BC8255F05778961F0DA7B81
telfhash t105f09704fe2a8e0948e39a70ccbd07a0d803211390a25b20cf02dbe18c3e848f308d1d
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-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 981f05a7e5352b228cfd175fcdcb27e5c066fbf21b2e942680922b87856ef431
File size (compressed) :22'504 bytes
File size (de-compressed) :53'116 bytes
Format:linux/arm
Packed file: 981f05a7e5352b228cfd175fcdcb27e5c066fbf21b2e942680922b87856ef431

Intelligence

File Origin
# of uploads :
1
# of downloads :
70
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
Mirai
Details
Mirai
an XOR decryption key and at least a c2 socket address
Link:
https://research.acce.ciphertechsolutions.com/results/2e7d45f3-72c5-456b-9caa-16f4d7d0554c/
Detection(s):
Unix.Trojan.Mirai-9858729-0
Create hunting rule

Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Gathering data
Verdict:
Malicious
File Type:
elf.32.le
Detections:
HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f2e94164-1c88-4ca7-99d2-9add1a1b6b0a
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qg2nyrzqnugk6672xdcyz7uqbemqyvjcorkh4h4bxw5eyx75v76q._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:mirai
Link:
https://tria.ge/reports/260226-rd11vafw9a/
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/81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd

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_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb
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 981f05a7e5352b228cfd175fcdcb27e5c066fbf21b2e942680922b87856ef431

Mirai

elf 81b4dc47306d0caf7bfab8c58cfe9009190c552274547e1f81bdba4c5ffdaffd

(this sample)

  
Dropped by
SHA256 981f05a7e5352b228cfd175fcdcb27e5c066fbf21b2e942680922b87856ef431
  
URLhaus
https://urlhaus.abuse.ch/url/3759550/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 f399428611c9cfcf432eb07a54264a67

Comments