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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4efbcd4de5c82624f29a244c7281b13f4320e56aedf4a54f4807e98bfca8b978. 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: 8


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4efbcd4de5c82624f29a244c7281b13f4320e56aedf4a54f4807e98bfca8b978
SHA3-384 hash: c2071e1a2ed1329c323dccba56fced1697db60d7d404ffdfc77c0dd51a403b0fa9188524b664dcb92debc81e2ce0b402
SHA1 hash: 254f75b71400a7527fd811c349f2dfcac67f7178
MD5 hash: bb5747152a05d011e29b81cc23f787dc
humanhash: bravo-louisiana-carbon-red
File name:flutter.arm8
Download: download sample
Signature Mirai
Create hunting rule
File size:191'160 bytes
First seen:2026-09-02 17:12:20 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:mJ/I7xnvdKwfQzdXxMZE0GN36nuzYVslXPbaC3u0rY0a7g8nDVnRR4rC38HKwSv6:KI7x1wtjsVs9PWT0rxa7gQRGmaK2
TLSH T111148D9CAD0FBC41CADAE27DD9098BA3B03774B44365C0726C01137ED9AB9E6D9E3425
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 e9d152da4fb7066979efc4e832d36383ddafff1112546a54ddcef51313076f54
File size (compressed) :104'460 bytes
File size (de-compressed) :191'160 bytes
Format:linux/arm64
Packed file: e9d152da4fb7066979efc4e832d36383ddafff1112546a54ddcef51313076f54

Intelligence

File Origin
# of uploads :
1
# of downloads :
51
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Dropper.Mirai-7135897-0
Create hunting rule

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

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

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

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Creating a file
Runs as daemon
Manages services
Kills processes
Opens a port
Connection attempt
Changes access rights for a written file
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 expand gcc lolbin masquerade mirai
Link:
https://www.filescan.io/uploads/6a985931825f430840cc3b35/reports/d014dee4-4cb7-4fbb-9dbb-95588ba91886/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-08-31T17:04:00Z UTC
Last seen:
2026-08-31T17:22:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4efbcd4de5c82624f29a244c7281b13f4320e56aedf4a54f4807e98bfca8b978/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/1205221e-9fbc-4a3b-a8ae-73f9ffa4ddf6
Behavior Graph:
Download SVG
%3 guuid=6acb6326-1900-0000-52d3-afe22c070000 pid=1836 /usr/bin/sudo guuid=9e93332c-1900-0000-52d3-afe233070000 pid=1843 /tmp/sample.bin guuid=6acb6326-1900-0000-52d3-afe22c070000 pid=1836->guuid=9e93332c-1900-0000-52d3-afe233070000 pid=1843 execve
Gathering data
Score:
99%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4efbcd4de5c82624f29a244c7281b13f4320e56aedf4a54f4807e98bfca8b978
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4efbcd4de5c82624f29a244c7281b13f4320e56aedf4a54f4807e98bfca8b978/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-31 03:44:03 UTC
File Type:
ELF64 Little (SO)
AV detection:
18 of 36 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j3542tpfzatcj4u2erghfanrh5bsbzlk5x2kkt2ia7uyx7fixf4a._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260902-vrh9qsbk8v/
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/4efbcd4de5c82624f29a244c7281b13f4320e56aedf4a54f4807e98bfca8b978

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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:test_rule_vldslv
Create hunting rule
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:woof_mirai_variant
Create hunting rule
Author:Nokia Deepfield ERT
Description:Detects Woof Mirai variant (ChaCha20 table, HTTP C2 with token/guid, .woof dropper)
Reference:Internal analysis of sample 6ef4ce02

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf e9d152da4fb7066979efc4e832d36383ddafff1112546a54ddcef51313076f54

Mirai

elf 4efbcd4de5c82624f29a244c7281b13f4320e56aedf4a54f4807e98bfca8b978

(this sample)

  
Dropped by
SHA256 e9d152da4fb7066979efc4e832d36383ddafff1112546a54ddcef51313076f54
  
Dropped by
MD5 21f0ab20758fdfbebf50ccd37645576f
  
URLhaus
https://urlhaus.abuse.ch/url/3911443/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3911446/
  
URLhaus
https://urlhaus.abuse.ch/url/3911467/
  
URLhaus
https://urlhaus.abuse.ch/url/3911466/

Comments