MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb81dfd70f6753b7142b53f565f85273be0561e66c1bfef8e80de95066e681fc. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bb81dfd70f6753b7142b53f565f85273be0561e66c1bfef8e80de95066e681fc
SHA3-384 hash: 87862001c318be1b74ea40a37fccbd3f5102e900750dcb08a37bb7e78fd325651fee87389cef7df2bd451fcbb228bae8
SHA1 hash: 1d4730cfd694c5f4db967b47dc6bd35dc52ede35
MD5 hash: ce4a6336dbb62fc10410df262f8654f6
humanhash: sad-charlie-fourteen-october
File name:sshd
Download: download sample
Signature Mirai
Create hunting rule
File size:109'828 bytes
First seen:2025-07-14 00:10:10 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:Y5wQ4C555Xmhs/I0zAq9NdIBoZZCyH2iNL7zTJW2izjUJNcneFky74WcC72:UhdtXVP9NdIBoZZjlvJW2izj8Nwy7cCq
TLSH T153B3E70E6E219FBEF66CC63547B34B20975923D617E195C1E2ACD9005F6028E246FFE8
telfhash t1ed215b5c497823e4977a1cdd5aedfb76e55130df06266e378e00adad9a2cd825e00c1c
Magika elf
Reporter abuse_ch
Tags:elf gafgyt mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
17
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7640011-0
Create hunting rule

Unix.Trojan.Mirai-8041698-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Collects information on the CPU
Launching a process
Collects information on the OS
Connection attempt
Kills processes
Runs as daemon
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
bash lolbin obfuscated obfuscated
Link:
https://www.filescan.io/uploads/68744b29a15b22faa8b071a9/reports/06e691fe-7101-4fda-813b-72dcab42d9b3/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
not packed
Botnet:
unknown
Number of open files:
94
Number of processes launched:
15
Processes remaning?
false
Remote TCP ports scanned:
23
Full report:
https://elfdigest.com/brief/bb81dfd70f6753b7142b53f565f85273be0561e66c1bfef8e80de95066e681fc
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/d1885e30-6887-4750-af3d-37fc5c3655a0
Behavior Graph:
Download SVG
%3 guuid=8755b11f-1f00-0000-df0b-44e66a0b0000 pid=2922 /usr/bin/sudo guuid=e0798f21-1f00-0000-df0b-44e66c0b0000 pid=2924 /tmp/sample.bin guuid=8755b11f-1f00-0000-df0b-44e66a0b0000 pid=2922->guuid=e0798f21-1f00-0000-df0b-44e66c0b0000 pid=2924 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/0e1784e2-6ad8-4039-8d77-7b4cd85af4f0
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1735560
Signature
Antivirus / Scanner detection for submitted sample
Connects to many ports of the same IP (likely port scanning)
Multi AV Scanner detection for submitted file
Terminates several processes with shell command 'killall'
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1735560 Sample: sshd.elf Startdate: 14/07/2025 Architecture: LINUX Score: 64 41 46.222.106.79 XFERAES Spain 2->41 43 205.185.50.230 WINDSTREAMUS United States 2->43 45 98 other IPs or domains 2->45 47 Antivirus / Scanner detection for submitted sample 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 Connects to many ports of the same IP (likely port scanning) 2->51 10 sshd.elf 2->10         started        signatures3 process4 process5 12 sshd.elf 10->12         started        14 sshd.elf 10->14         started        process6 16 sshd.elf 12->16         started        process7 18 sshd.elf sh 16->18         started        20 sshd.elf sh 16->20         started        22 sshd.elf sh 16->22         started        24 59 other processes 16->24 process8 26 sh killall 18->26         started        29 sh killall 20->29         started        31 sh killall 22->31         started        33 sh killall 24->33         started        35 sh killall 24->35         started        37 sh killall 24->37         started        39 55 other processes 24->39 signatures9 53 Terminates several processes with shell command 'killall' 26->53
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/bb81dfd70f6753b7142b53f565f85273be0561e66c1bfef8e80de95066e681fc
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bb81dfd70f6753b7142b53f565f85273be0561e66c1bfef8e80de95066e681fc/
Threat name:
Linux.Backdoor.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-07-14 00:10:32 UTC
File Type:
ELF32 Big (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xoa57vypm5j3ofblkp2wl6csoo7akypgnqn756hibxuvazxgqh6a._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:kyton defense_evasion discovery
Link:
https://tria.ge/reports/250714-af9mbswxg1/
Behaviour
Reads runtime system information
Reads CPU attributes
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Contacts a large (111553) amount of remote hosts
Creates a large amount of network flows
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7640011-0
YARA:
n/a
Link:
https://app.threat.zone/submission/a2fc3338-365d-43a2-beef-5e039aa5daba
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/bb81dfd70f6753b7142b53f565f85273be0561e66c1bfef8e80de95066e681fc

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
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 bb81dfd70f6753b7142b53f565f85273be0561e66c1bfef8e80de95066e681fc

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3576541/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh

Comments