MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a33b34243c205a7bdecd393ce8b15a26bef3bf69cbdebbad580a3ebbb6c57ae9. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a33b34243c205a7bdecd393ce8b15a26bef3bf69cbdebbad580a3ebbb6c57ae9
SHA3-384 hash: b69f3b555496d510e5ae0cfad2bec9ae3b031a6ae1cb039b2b1f7a96ebec98e81abd9e31b232228208e0f4d45aa4e8f6
SHA1 hash: bc7d5e6ecaec8ea81c8adccb6a700ff9a67279bd
MD5 hash: 851ec3b6a12b1e558c8b02302c70ba06
humanhash: quebec-diet-neptune-earth
File name:micro.arm7
Download: download sample
Signature Mirai
Create hunting rule
File size:200'744 bytes
First seen:2026-05-27 11:22:12 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:f+7xTruvDniBDRbQraUgaodckJc8k4RoEJOjCiaMbooM/RcBa66:qTivTqRbONgaOckJc8r6jCiFEoM/RUb6
TLSH T108142B45EA414B13C0D627BAFA9F424533339B64D3EB73059928AFB43BC679E4F22605
telfhash t10e31ffb15b7a52165950eeac98e9a753052ec6261341ff37ff22c4dc680a44edb22c0f
Magika elf
Reporter abuse_ch
Tags:elf mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 38d9f99421e8e342b31fbce999d472cd1a957958ef09cdcf6724bd3293556bfb
File size (compressed) :73'516 bytes
File size (de-compressed) :200'744 bytes
Format:linux/arm
Packed file: 38d9f99421e8e342b31fbce999d472cd1a957958ef09cdcf6724bd3293556bfb

Intelligence

File Origin
# of uploads :
1
# of downloads :
39
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/b932568b-43d7-4acf-9595-e5ba41bb8430/
Detection(s):
Unix.Dropper.Mirai-7135925-0
Create hunting rule

Unix.Dropper.Mirai-7136013-0
Create hunting rule

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

Unix.Trojan.Mirai-9760303-0
Create hunting rule

Unix.Trojan.Mirai-9858729-0
Create hunting rule

YARA.SIGNATURE_BASE_MAL_ARM_LNX_Mirai_Mar13_2022.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Runs as daemon
Connection attempt
Sends data to a server
Receives data from a server
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/c856285c-19ac-44a3-a3f5-c6263eeb560e
Behavior Graph:
Download SVG
%3 guuid=70a80492-2300-0000-57a8-0b81660a0000 pid=2662 /usr/bin/sudo guuid=2a185794-2300-0000-57a8-0b816d0a0000 pid=2669 /tmp/sample.bin guuid=70a80492-2300-0000-57a8-0b81660a0000 pid=2662->guuid=2a185794-2300-0000-57a8-0b816d0a0000 pid=2669 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/74716fc0-d393-47de-b64a-f37c93956dbf
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a33b34243c205a7bdecd393ce8b15a26bef3bf69cbdebbad580a3ebbb6c57ae9
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a33b34243c205a7bdecd393ce8b15a26bef3bf69cbdebbad580a3ebbb6c57ae9/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-05-27 11:25:48 UTC
File Type:
ELF32 Little (Exe)
AV detection:
17 of 36 (47.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=um5tijb4ebnhxxwnhe6ormk2e27php3jzpplxlkybi7lxnwfpluq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:lzrd botnet defense_evasion
Link:
https://tria.ge/reports/260527-ngsl4aew5y/
Behaviour
Writes file to system bin folder
Modifies Watchdog functionality
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
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:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
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 38d9f99421e8e342b31fbce999d472cd1a957958ef09cdcf6724bd3293556bfb

Mirai

elf a33b34243c205a7bdecd393ce8b15a26bef3bf69cbdebbad580a3ebbb6c57ae9

(this sample)

  
Dropped by
SHA256 38d9f99421e8e342b31fbce999d472cd1a957958ef09cdcf6724bd3293556bfb
  
URLhaus
https://urlhaus.abuse.ch/url/3853860/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 acde4bc3b0683158d3b32809ab500250

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