MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57b85033fc3c849f07dc2006fa0b87fd813f333c686de9864360ff246818ba72. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 57b85033fc3c849f07dc2006fa0b87fd813f333c686de9864360ff246818ba72
SHA3-384 hash: 5fcaf6abc0901527f56c283a68cd67718fda06b450a7082373fb3b620270936c7d5fe3dfcb57d5982ce8de7c36c47dea
SHA1 hash: 2caa8a3aed8d916358dde9c5dea77c7e4bb0b670
MD5 hash: 15a7526bc6eacbc3d568f0495fe62f85
humanhash: grey-lamp-tennessee-equal
File name:morte.mpsl
Download: download sample
Signature Mirai
Create hunting rule
File size:157'156 bytes
First seen:2025-12-03 22:43:26 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:5SiLTdQUa2BSRcBIZaRmcbbc7pzrSQOfBQawSq:5SkTdQUa2BSRnZQPcJrShfzwS
TLSH T114E3C609BF611EF7E89FCC3705E91B01288D691622A93F36B534D858B64B24F26E3D74
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 8c45280bdf1bbb9840dde3dd4ddbf30b2bb42a67da3fc793eedb3d3ffffca0c4
File size (compressed) :49'604 bytes
File size (de-compressed) :157'156 bytes
Format:linux/mipsel
Packed file: 8c45280bdf1bbb9840dde3dd4ddbf30b2bb42a67da3fc793eedb3d3ffffca0c4

Intelligence

File Origin
# of uploads :
1
# of downloads :
65
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/bf7a26bd-f96f-419e-95ad-cffd9177a8ee/
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
DNS request
Sets a written file as executable
Runs as daemon
Sends data to a server
Launching a process
Substitutes an application name
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
botnet masquerade mirai obfuscated
Link:
https://www.filescan.io/uploads/6930bd3fbba50eaf041ff151/reports/1866d5eb-69d7-4c6f-9e67-a18848132e2c/overview
Result
Gathering data
Gathering data
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1825914
Signature
Antivirus / Scanner detection for submitted sample
Deletes system log files
Drops files in suspicious directories
Malicious sample detected (through community Yara rule)
Sample tries to kill multiple processes (SIGKILL)
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1825914 Sample: morte.mpsl.elf Startdate: 03/12/2025 Architecture: LINUX Score: 84 37 109.202.202.202, 80 INIT7CH Switzerland 2->37 39 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->39 41 2 other IPs or domains 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus / Scanner detection for submitted sample 2->45 47 Yara detected Mirai 2->47 10 morte.mpsl.elf 2->10         started        12 xfce4-panel wrapper-2.0 2->12         started        14 xfce4-panel wrapper-2.0 2->14         started        16 5 other processes 2->16 signatures3 process4 process5 18 morte.mpsl.elf 10->18         started        process6 20 morte.mpsl.elf 18->20         started        file7 35 /etc/init.d/sysd, POSIX 20->35 dropped 49 Sample tries to set files in /etc globally writable 20->49 51 Drops files in suspicious directories 20->51 53 Sample tries to persist itself using System V runlevels 20->53 24 morte.mpsl.elf 20->24         started        26 morte.mpsl.elf sh 20->26         started        signatures8 process9 process10 28 morte.mpsl.elf 24->28         started        31 morte.mpsl.elf 24->31         started        33 sh cp 26->33         started        signatures11 55 Deletes system log files 28->55 57 Sample tries to kill multiple processes (SIGKILL) 31->57
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/57b85033fc3c849f07dc2006fa0b87fd813f333c686de9864360ff246818ba72
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/57b85033fc3c849f07dc2006fa0b87fd813f333c686de9864360ff246818ba72/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k64fam74hscj6b64eadpuc4h7wat6mz4nbw6tbsdmd7si2ayxjza._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery persistence
Link:
https://tria.ge/reports/251203-2n383ahm5y/
Behaviour
Reads runtime system information
Changes its process name
Enumerates running processes
Modifies init.d
Modifies rc script
Deletes Audit logs
Deletes journal logs
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:botnet_Yakuza
Create hunting rule
Author:NDA0E
Description:Yakuza botnet
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Trojan_Gafgyt_28a2fe0c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_ea92cca8
Create hunting rule
Author:Elastic Security
Rule name:Mirai_Botnet_Malware
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Mirai Botnet Malware
Reference:Internal Research
Rule name:Mirai_Botnet_Malware_RID2EF6
Create hunting rule
Author:Florian Roth
Description:Detects Mirai Botnet Malware
Reference:Internal Research
Rule name:SUSP_XORed_Mozilla_Oct19
Create hunting rule
Author:Florian Roth
Description:Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()
Rule name:SUSP_XORed_Mozilla_RID2DB4
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
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 8c45280bdf1bbb9840dde3dd4ddbf30b2bb42a67da3fc793eedb3d3ffffca0c4

Mirai

elf 57b85033fc3c849f07dc2006fa0b87fd813f333c686de9864360ff246818ba72

(this sample)

  
Dropped by
SHA256 8c45280bdf1bbb9840dde3dd4ddbf30b2bb42a67da3fc793eedb3d3ffffca0c4
  
URLhaus
https://urlhaus.abuse.ch/url/3720197/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 bf9d2ef00c3bd9e8c36b5d695804cd76

Comments