MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 97aa861cf408cc8ad8a49443c2b7bd15705ce0c1ee72e0674b476e418cfeccbb. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 97aa861cf408cc8ad8a49443c2b7bd15705ce0c1ee72e0674b476e418cfeccbb
SHA3-384 hash: a11f812806d3387b634c495a5edc7b606451e769e80210f4ea7d8568f7c3b8ba21029b24b7b94f04a05490aedf52bc96
SHA1 hash: 29e1119ab852dd3ffd045f28b3ffd6278a8eac2c
MD5 hash: 9b07d014fadd3b91e2fb3b9b025b06e1
humanhash: butter-lamp-black-chicken
File name:Polar.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:56'192 bytes
First seen:2025-11-29 04:17:42 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:E6RBNaQCANEdtCRKTKZ3XPNTWBhjW1PBnouy8ty4:XR2QCFDwKTK9/NTWXWVhoutZ
TLSH T1644302138DD8438FFEBFA2734D41DE4E1D92D34916A6985246E421E709A1B740F267E1
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) :56'192 bytes
File size (de-compressed) :136'428 bytes
Format:linux/i386
Unpacked file: c19dfac3c3c3c0b8a24170bfe71f2b2fdf357029cc407620292142945574c66b

Intelligence

File Origin
# of uploads :
1
# of downloads :
41
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/c49e9f30-6125-4d6d-b612-537a4c934acc/
Detection(s):
Unix.Dropper.Mirai-7135858-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Runs as daemon
Opens a port
Sends data to a server
DNS request
Connection attempt
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
masquerade packed upx
Link:
https://www.filescan.io/uploads/692a7406d0d5e7288b501fc1/reports/60cccad8-5c51-43bb-8ccd-b6d519070848/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-11-29T02:27:00Z UTC
Last seen:
2025-11-29T13:42:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/97aa861cf408cc8ad8a49443c2b7bd15705ce0c1ee72e0674b476e418cfeccbb/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/17ef4220-44dc-45ab-a1d4-0d1ba040a414
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1822693
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Uses dynamic DNS services
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1822693 Sample: Polar.x86.elf Startdate: 29/11/2025 Architecture: LINUX Score: 64 22 lolzzmortex.duckdns.org 2->22 24 169.254.169.254, 80 USDOSUS Reserved 2->24 26 3 other IPs or domains 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Sample is packed with UPX 2->32 8 Polar.x86.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 34 Uses dynamic DNS services 22->34 process4 process5 12 Polar.x86.elf 8->12         started        14 Polar.x86.elf 8->14         started        16 Polar.x86.elf 8->16         started        process6 18 Polar.x86.elf 12->18         started        20 Polar.x86.elf 12->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/97aa861cf408cc8ad8a49443c2b7bd15705ce0c1ee72e0674b476e418cfeccbb
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/97aa861cf408cc8ad8a49443c2b7bd15705ce0c1ee72e0674b476e418cfeccbb/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-29 04:18:23 UTC
File Type:
ELF32 Little (Exe)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=s6vimhhubdgivwfesrb4fn55cvyfzygb5zzoaz2li5xeddh6zs5q._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion discovery linux upx
Link:
https://tria.ge/reports/251129-ew3aeadr2z/
Behaviour
Reads runtime system information
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Mirai
Mirai family
Malware Config
C2 Extraction:
lolzzmortex.duckdns.org
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7135858-0
YARA:
n/a
Link:
https://app.threat.zone/submission/f920cebf-5eaa-440f-a152-4af06fe922e9
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/97aa861cf408cc8ad8a49443c2b7bd15705ce0c1ee72e0674b476e418cfeccbb

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: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 97aa861cf408cc8ad8a49443c2b7bd15705ce0c1ee72e0674b476e418cfeccbb

(this sample)

Mirai

elf c19dfac3c3c3c0b8a24170bfe71f2b2fdf357029cc407620292142945574c66b

  
URLhaus
https://urlhaus.abuse.ch/url/3712740/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 c19dfac3c3c3c0b8a24170bfe71f2b2fdf357029cc407620292142945574c66b
  
Dropping
MD5 194ea952c8a60f71a78d8305117598f2
  
URLhaus
https://urlhaus.abuse.ch/url/3711502/

Comments