MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f8b9acbdcbeeb5d59c9d31788ef5f717fb62bf728ddae01584e29b6a33d89dc5. 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 4 File information Comments

SHA256 hash: f8b9acbdcbeeb5d59c9d31788ef5f717fb62bf728ddae01584e29b6a33d89dc5
SHA3-384 hash: 42285f35a60bd8771f715a7fa255787caa619c2753a6626d5d64bbe0808f00b176c65ba677e5e59b37c4b3d054fb63ba
SHA1 hash: 691af39b3e4f21ded52cb13ca22f2e70ea0c1727
MD5 hash: 87d15ddefc6d863834ae1d50f645f34d
humanhash: beryllium-stairway-winner-ceiling
File name:kvariant.arm5
Download: download sample
Signature Mirai
File size:89'876 bytes
First seen:2025-11-07 23:02:25 UTC
Last seen:2025-11-07 23:55:15 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:bhUQe9qmh0bZKUvQTATKNR1P9OeK+BvNgZoM+mVbeJy36udju:bhUt9qmojvSAWn1y0FB0e/2ju
TLSH T1BE931985BC819A12C6C1127BFF5F428D372A63A8E3ED3203DE255F61379756B0E2B521
telfhash t110b092e25e890ef827029b4bd3c3227d9f683290ab4114601cca8fa344636e4a463020
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

Intelligence


File Origin
# of uploads :
2
# of downloads :
90
Origin country :
DE DE
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gafgyt masquerade mirai rust
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
2
Number of processes launched:
4
Processes remaning?
true
Remote TCP ports scanned:
37215,23
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-11-07T21:28:00Z UTC
Last seen:
2025-11-07T22:54:00Z UTC
Hits:
~10
Status:
terminated
Behavior Graph:
%3 guuid=ea871b68-1a00-0000-0e7b-0447020b0000 pid=2818 /usr/bin/sudo guuid=49e3816b-1a00-0000-0e7b-0447090b0000 pid=2825 /tmp/sample.bin guuid=ea871b68-1a00-0000-0e7b-0447020b0000 pid=2818->guuid=49e3816b-1a00-0000-0e7b-0447090b0000 pid=2825 execve
Result
Threat name:
Detection:
malicious
Classification:
troj
Score:
72 / 100
Signature
Antivirus / Scanner detection for submitted sample
Connects to many IPs within the same subnet mask (likely port scanning)
Uses known network protocols on non-standard ports
Yara detected Mirai
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1810270 Sample: kvariant.arm5.elf Startdate: 08/11/2025 Architecture: LINUX Score: 72 25 65.44.149.119 XO-AS15US United States 2->25 27 107.25.249.68 WAYPORTUS United States 2->27 29 100 other IPs or domains 2->29 31 Antivirus / Scanner detection for submitted sample 2->31 33 Yara detected Mirai 2->33 35 Connects to many IPs within the same subnet mask (likely port scanning) 2->35 37 Uses known network protocols on non-standard ports 2->37 9 kvariant.arm5.elf 2->9         started        11 dash rm 2->11         started        13 dash cat 2->13         started        15 9 other processes 2->15 signatures3 process4 process5 17 kvariant.arm5.elf 9->17         started        process6 19 kvariant.arm5.elf 17->19         started        process7 21 kvariant.arm5.elf 19->21         started        23 kvariant.arm5.elf 19->23         started       
Threat name:
Linux.Worm.Mirai
Status:
Malicious
First seen:
2025-11-07 23:03:19 UTC
File Type:
ELF32 Little (Exe)
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Verdict:
Malicious
Tags:
Unix.Exploit.Mirai-9798002-0
YARA:
n/a
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:CVE_2017_17215
Author:NDA0E
Description:Detects exploitation attempt of CVE-2017-17215
Rule name:ELF_Mirai
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:Linux_Generic_Threat_d94e1020
Author:Elastic Security
Rule name:unixredflags3
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 f8b9acbdcbeeb5d59c9d31788ef5f717fb62bf728ddae01584e29b6a33d89dc5

(this sample)

  
Delivery method
Distributed via web download

Comments