MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a9f42ea4abbfc5054631a4da5a4b23450c962f746969e7f6bf993e4f09afadce. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a9f42ea4abbfc5054631a4da5a4b23450c962f746969e7f6bf993e4f09afadce
SHA3-384 hash: fc0a4b2aa7e6984a6cacc2cf8c51c5e4546cc0b32e37968a3675ab9a2cd50d1146864e1561657c309e358bc48f85b4e8
SHA1 hash: e955afc9d530035f9ddd1d2973ed56206941ade0
MD5 hash: e93dd3d64a5c8c918c1609167c1b7e43
humanhash: alaska-low-spaghetti-montana
File name:Polar.arm7
Download: download sample
Signature Mirai
Create hunting rule
File size:252'037 bytes
First seen:2025-12-04 16:52:18 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 6144:lDbea5qa4hy2q2a94GmB0kldpM7op+3JrV/G0Nd2eqSmB:lD5qRBq2a6GmB0kbWsc/Dd2h
TLSH T1FD342A46EB808E13C0D627B9F69F42553333D7A4D3E77306A9286BB43B8379A4F62505
telfhash t144412fb29334911a1a61dc18e8eca772482ec7271345ff77de25c88c281944ee539c0f
Magika elf
Reporter abuse_ch
Tags:elf gafgyt mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 e48cc41b095778d8fa995861e016b03e8ed17d94acaee927c7daf67dc68a7c38
File size (compressed) :90'988 bytes
File size (de-compressed) :252'037 bytes
Format:linux/arm
Packed file: e48cc41b095778d8fa995861e016b03e8ed17d94acaee927c7daf67dc68a7c38

Intelligence

File Origin
# of uploads :
1
# of downloads :
35
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/c3b5d3e2-1bc5-43bb-8c3a-707488c28960/
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-7135925-0
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.Trojan.Mirai-9760303-0
Create hunting rule

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

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

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
gafgyt gcc masquerade mirai obfuscated rust
Link:
https://www.filescan.io/uploads/6931bc79d12d1c79d4294577/reports/645ec92b-ec72-48df-befc-9d2b740d3f8f/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-12-04T15:09:00Z UTC
Last seen:
2025-12-05T00:38:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a9f42ea4abbfc5054631a4da5a4b23450c962f746969e7f6bf993e4f09afadce/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/99fb10a2-4981-4242-9aa0-5f77f9845c27
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1826523
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1826523 Sample: Polar.arm7.elf Startdate: 04/12/2025 Architecture: LINUX Score: 68 22 uraniumc2.ddns.net 2->22 24 169.254.169.254, 80 USDOSUS Reserved 2->24 26 2 other IPs or domains 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Antivirus / Scanner detection for submitted sample 2->30 32 Multi AV Scanner detection for submitted file 2->32 8 Polar.arm7.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 34 Uses dynamic DNS services 22->34 process4 process5 12 Polar.arm7.elf 8->12         started        14 Polar.arm7.elf 8->14         started        16 Polar.arm7.elf 8->16         started        process6 18 Polar.arm7.elf 12->18         started        20 Polar.arm7.elf 12->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a9f42ea4abbfc5054631a4da5a4b23450c962f746969e7f6bf993e4f09afadce
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a9f42ea4abbfc5054631a4da5a4b23450c962f746969e7f6bf993e4f09afadce/
Threat name:
Linux.Trojan.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-12-04 16:53:15 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=vh2c5jflx7cqkrrrutnfuszdiugjml3unfu6p5v7te7e6cnpvxha._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery
Link:
https://tria.ge/reports/251204-vd3ffsbm8z/
Behaviour
Reads runtime system information
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Malware Config
C2 Extraction:
uraniumc2.ddns.net
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Trojan.Mirai-7100807-0
YARA:
Linux_Trojan_Gafgyt_ea92cca8
Link:
https://app.threat.zone/submission/7b244ce3-e1db-4d81-b5c9-a4d1b30e697c
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/a9f42ea4abbfc5054631a4da5a4b23450c962f746969e7f6bf993e4f09afadce

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
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_Trojan_Gafgyt_ea92cca8
Create hunting rule
Author:Elastic Security
Rule name:MAL_ARM_LNX_Mirai_Mar13_2022
Create hunting rule
Author:Mehmet Ali Kerimoglu a.k.a. CYB3RMX
Description:Detects new ARM Mirai variant
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
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 e48cc41b095778d8fa995861e016b03e8ed17d94acaee927c7daf67dc68a7c38

Mirai

elf a9f42ea4abbfc5054631a4da5a4b23450c962f746969e7f6bf993e4f09afadce

(this sample)

  
Dropped by
SHA256 e48cc41b095778d8fa995861e016b03e8ed17d94acaee927c7daf67dc68a7c38
  
URLhaus
https://urlhaus.abuse.ch/url/3711457/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 b273e1c36db02591004cbebe87c9d24d
  
URLhaus
https://urlhaus.abuse.ch/url/3712738/

Comments