MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 820a7ffca1224e715aaea58847fdbc45b407d1d2d87bebb9b993fc348387f539. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 820a7ffca1224e715aaea58847fdbc45b407d1d2d87bebb9b993fc348387f539
SHA3-384 hash: 6dff1c2cb24dfe4edd39be3c7f25382b672ad09e16c9965389056066f3b3b5933efefebf4a8c2be02c24ba02ed609de2
SHA1 hash: 850fdab5a8949cd83f7fbc0908efb7dfec9a2686
MD5 hash: d4d971b100045c5d3d9b4d44f550f412
humanhash: quiet-nevada-failed-colorado
File name:Polar.arm
Download: download sample
Signature Mirai
Create hunting rule
File size:176'896 bytes
First seen:2025-11-28 23:47:17 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:nw2nSbUrV+ZwhNAjmVHHVvCUB5CNp4PtPzpQvZSahT:weSbUrV+ZZgHFZfc4FPdQRSahT
TLSH T193042986F8C18E22C5C252BFFB5E418D372657A8D2DE31039D265F21378B5AA0F3A546
telfhash t13521da26de451a9c33cc865581ee2132eea8309eab1924db865c6b0e8b53d80f01e936
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 6138db860a6695f8a3900fae3a75d32ddd9a20f12f043a3f1a783a2f1ecec4d2
File size (compressed) :66'476 bytes
File size (de-compressed) :176'896 bytes
Format:linux/arm
Packed file: 6138db860a6695f8a3900fae3a75d32ddd9a20f12f043a3f1a783a2f1ecec4d2

Intelligence

File Origin
# of uploads :
1
# of downloads :
87
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/a12cc993-130a-4d55-8e14-bfbee07698df/
Detection(s):
Sanesecurity.Malware.28940.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30435.LC.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Siggen.9999-6.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-7100807-0
Create hunting rule

Unix.Dropper.Mirai-7135897-0
Create hunting rule

Unix.Dropper.Mirai-7135901-0
Create hunting rule

Unix.Dropper.Mirai-7135909-0
Create hunting rule

Unix.Trojan.Mirai-7135916-0
Create hunting rule

Unix.Dropper.Mirai-7135918-0
Create hunting rule

Unix.Dropper.Mirai-7135954-0
Create hunting rule

Unix.Dropper.Mirai-7136016-0
Create hunting rule

Unix.Dropper.Mirai-7136028-0
Create hunting rule

Unix.Trojan.Mirai-8025795-0
Create hunting rule

Unix.Dropper.Mirai-10007027-0
Create hunting rule

Unix.Trojan.Mirai-10009361-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade mirai obfuscated rust
Link:
https://www.filescan.io/uploads/692a34bcd0d5e7288b4fe7a4/reports/33db0b32-5cd9-49cc-877c-e1d933fc7c05/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-11-28T20:54:00Z UTC
Last seen:
2025-11-29T09:17:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.r HEUR:Backdoor.Linux.Mirai.h HEUR:Backdoor.Linux.Mirai.cw HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.bl HEUR:Backdoor.Linux.Gafgyt.bj
Link:
https://opentip.kaspersky.com/820a7ffca1224e715aaea58847fdbc45b407d1d2d87bebb9b993fc348387f539/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c92811ce-dc51-4a86-a63c-b81290eeb308
Result
Threat name:
Gafgyt
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1822635
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Uses dynamic DNS services
Yara detected Gafgyt
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1822635 Sample: Polar.arm.elf Startdate: 29/11/2025 Architecture: LINUX Score: 76 26 lolzzmortex.duckdns.org 2->26 28 169.254.169.254, 80 USDOSUS Reserved 2->28 30 5 other IPs or domains 2->30 32 Malicious sample detected (through community Yara rule) 2->32 34 Antivirus / Scanner detection for submitted sample 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected Gafgyt 2->38 8 Polar.arm.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        14 python3.8 dpkg 2->14         started        signatures3 40 Uses dynamic DNS services 26->40 process4 process5 16 Polar.arm.elf 8->16         started        18 Polar.arm.elf 8->18         started        20 Polar.arm.elf 8->20         started        process6 22 Polar.arm.elf 16->22         started        24 Polar.arm.elf 16->24         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/820a7ffca1224e715aaea58847fdbc45b407d1d2d87bebb9b993fc348387f539
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/820a7ffca1224e715aaea58847fdbc45b407d1d2d87bebb9b993fc348387f539/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/820a7ffca1224e715aaea58847fdbc45b407d1d2d87bebb9b993fc348387f539
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-28 23:48:14 UTC
File Type:
ELF32 Little (Exe)
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qifh77fbejhhcwvouweep7n4iw2apuos3b56xonzsp6dja4h6u4q._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai
Link:
https://tria.ge/reports/251128-3tg4fscj6y/
Malware Config
C2 Extraction:
lolzzmortex.duckdns.org
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Trojan.Mirai-7100807-0
YARA:
Linux_Trojan_Gafgyt_ea92cca8
Link:
https://app.threat.zone/submission/aed7d482-cd01-4eb3-ac3b-db3c399fc1d0
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/820a7ffca1224e715aaea58847fdbc45b407d1d2d87bebb9b993fc348387f539

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_Yakuza
Create hunting rule
Author:NDA0E
Description:Yakuza botnet
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Generic_Threat_d94e1020
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_ea92cca8
Create hunting rule
Author:Elastic Security
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 6138db860a6695f8a3900fae3a75d32ddd9a20f12f043a3f1a783a2f1ecec4d2

Mirai

elf 820a7ffca1224e715aaea58847fdbc45b407d1d2d87bebb9b993fc348387f539

(this sample)

  
Dropped by
SHA256 6138db860a6695f8a3900fae3a75d32ddd9a20f12f043a3f1a783a2f1ecec4d2
  
URLhaus
https://urlhaus.abuse.ch/url/3711540/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 da7a15196703d4583b3fac1b45adaf5a
  
URLhaus
https://urlhaus.abuse.ch/url/3712735/

Comments