MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 803e382100c15488668821185252b67deb6e3e2f4abb794db3b01e6d62457f32. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 803e382100c15488668821185252b67deb6e3e2f4abb794db3b01e6d62457f32
SHA3-384 hash: d93beb2990d3db3c7e85872763f923642b3446eea0024fed6ed590f432a511e39b6d69e19eec0231f4c2633f5af5a528
SHA1 hash: 6a8c5fa0106f520938f0e61be6d0d2ee79dc0cf6
MD5 hash: 45294594c3902cdd09c408fc3c7327c5
humanhash: robert-burger-fruit-bravo
File name:Polar.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:56'120 bytes
First seen:2025-12-04 15:58:22 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:RhNZoUhtnJ2nz3/NKiremw/C2YiEwE9RtXivSeY4XwJnouy8tyy:RhToUhlEZKzB/C2Rk+pYHoutr
TLSH T16B43022BD3D74990F27F0271D89F6ADB2111FAEA700878979F4292488527C1C3B297C7
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) :56'120 bytes
File size (de-compressed) :136'140 bytes
Format:linux/i386
Unpacked file: 12170ab6d819635c5857867763fa32b96a970d19484082124f2db9a2442283e1

Intelligence

File Origin
# of uploads :
1
# of downloads :
36
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/eea4b551-f1f4-4af3-8747-4eaadea82278/
Detection(s):
Unix.Dropper.Mirai-7135858-0
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gafgyt masquerade mirai obfuscated packed upx
Link:
https://www.filescan.io/uploads/6931afd0bc15eab491f46fc4/reports/04a79058-2449-4a53-84cb-a5eb15e84ec2/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-12-04T14:10:00Z UTC
Last seen:
2025-12-05T00:38:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/803e382100c15488668821185252b67deb6e3e2f4abb794db3b01e6d62457f32/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/338b61fa-1ea0-47b6-bd97-bde99b7e7d0e
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1826471
Signature
Malicious sample detected (through community Yara rule)
Sample is packed with UPX
Uses dynamic DNS services
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1826471 Sample: Polar.x86.elf Startdate: 04/12/2025 Architecture: LINUX Score: 56 26 uraniumc2.ddns.net 2->26 28 169.254.169.254, 80 USDOSUS Reserved 2->28 30 6 other IPs or domains 2->30 32 Malicious sample detected (through community Yara rule) 2->32 34 Sample is packed with UPX 2->34 8 Polar.x86.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        14 python3.8 dpkg 2->14         started        signatures3 36 Uses dynamic DNS services 26->36 process4 process5 16 Polar.x86.elf 8->16         started        18 Polar.x86.elf 8->18         started        20 Polar.x86.elf 8->20         started        process6 22 Polar.x86.elf 16->22         started        24 Polar.x86.elf 16->24         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/803e382100c15488668821185252b67deb6e3e2f4abb794db3b01e6d62457f32
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/803e382100c15488668821185252b67deb6e3e2f4abb794db3b01e6d62457f32/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-04 16:19:27 UTC
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qa7dqiiayfkiqzuieemfeuvwpxvw4prpjk5xstntwapg2ysfp4za._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/251204-te53asar6x/
Behaviour
Reads runtime system information
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Mirai
Mirai family
Malware Config
C2 Extraction:
uraniumc2.ddns.net
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7135858-0
YARA:
n/a
Link:
https://app.threat.zone/submission/2d6cf3c8-05f0-45b9-a5e5-5b1429001d8f
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/803e382100c15488668821185252b67deb6e3e2f4abb794db3b01e6d62457f32

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: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 803e382100c15488668821185252b67deb6e3e2f4abb794db3b01e6d62457f32

(this sample)

Mirai

elf 12170ab6d819635c5857867763fa32b96a970d19484082124f2db9a2442283e1

  
URLhaus
https://urlhaus.abuse.ch/url/3711502/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 12170ab6d819635c5857867763fa32b96a970d19484082124f2db9a2442283e1
  
Dropping
MD5 d769704be760d812b3c3cae9db279f37
  
URLhaus
https://urlhaus.abuse.ch/url/3712740/

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