MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 721c20fc71e2e783c9298a51433c2ba6672279f8214e148e493a1cae6e534443. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 721c20fc71e2e783c9298a51433c2ba6672279f8214e148e493a1cae6e534443
SHA3-384 hash: 5503a8dc014dd122d6516af3da8003a21d23e5844b7e09a5d781184ed332ae3c27dee9fc1fd58369091f42078d6f1b2f
SHA1 hash: adf64c9ff9b8d9897fddc7e3014b9c5aea88b964
MD5 hash: 47ee0b8842a526fc0c6ff94fe4ca2ad6
humanhash: finch-sixteen-delaware-xray
File name:x86
Download: download sample
Signature Mirai
Create hunting rule
File size:75'704 bytes
First seen:2024-10-26 19:16:41 UTC
Last seen:2024-10-26 20:30:59 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:BFEA/tr50yFqIWfWD7LnaItWpOIfFkDFD:BFEAVZRWfWTnaVEIf0FD
TLSH T1CC736C17B681C0FDC499C234476F763AE933B57D0238B26A27D4FB226E8AD611F6D940
telfhash t1693129f539e61ca0e1f7ba767346e0e11834192115f131e299b6a9f2ce627830d7583b
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

Intelligence

File Origin
# of uploads :
2
# of downloads :
91
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Linux.Siggen.9999.30229.23681.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=671e42b7a75e41aa67225797linux22vpnfull_triage
Tags:
Phishing Mirai
Result
Verdict:
Malware
Maliciousness:

Behaviour
Runs as daemon
Connection attempt
Mounts file systems
Creating a file
Receives data from a server
DNS request
Changes access rights for a written file
Launching a process
Changes the time when the file was created, accessed, or modified
Opens a port
Sends data to a server
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug lolbin remote
Link:
https://www.filescan.io/uploads/671d402f7b6de3d3d355b2c1/reports/93e2c692-f1f5-4fcf-be4f-7cde7b32ce8a/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
true
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
3
Number of processes launched:
4
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/721c20fc71e2e783c9298a51433c2ba6672279f8214e148e493a1cae6e534443
Behaviour
Anti-VM
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Verdict:
UNKNOWN
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0cc993ed-2f64-4641-ac7e-712fefe8b2df
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1542917
Signature
Connects to many ports of the same IP (likely port scanning)
Executes the "crontab" command typically for achieving persistence
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample tries to persist itself using cron
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1542917 Sample: x86.elf Startdate: 26/10/2024 Architecture: LINUX Score: 72 30 31.13.248.89, 13295, 24854, 34796 NETERRA-ASBG Bulgaria 2->30 32 185.82.200.181, 11289, 13921, 24797 HSAE Netherlands 2->32 34 12 other IPs or domains 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 Machine Learning detection for sample 2->40 42 Connects to many ports of the same IP (likely port scanning) 2->42 9 x86.elf 2->9         started        signatures3 process4 process5 11 x86.elf sh 9->11         started        13 x86.elf 9->13         started        15 x86.elf 9->15         started        17 x86.elf 9->17         started        process6 19 sh crontab 11->19         started        23 sh 11->23         started        file7 28 /var/spool/cron/crontabs/tmp.5uOXlK, ASCII 19->28 dropped 44 Sample tries to persist itself using cron 19->44 46 Executes the "crontab" command typically for achieving persistence 19->46 25 sh crontab 23->25         started        signatures8 process9 signatures10 48 Executes the "crontab" command typically for achieving persistence 25->48
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/721c20fc71e2e783c9298a51433c2ba6672279f8214e148e493a1cae6e534443
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/721c20fc71e2e783c9298a51433c2ba6672279f8214e148e493a1cae6e534443/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2024-10-26 19:17:04 UTC
File Type:
ELF64 Little (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=oiocb7dr4ltyhsjjrjiugpbluztse6pyefhbjdsjhiok43stirbq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution linux persistence privilege_escalatio
Link:
https://tria.ge/reports/241026-xzcg9syenk/
Behaviour
Reads runtime system information
Changes its process name
Creates/modifies Cron job
File and Directory Permissions Modification
Renames itself
Unexpected DNS network traffic destination
Verdict:
Malicious
Tags:
trojan gafgyt mirai
YARA:
Linux_Trojan_Gafgyt_9e9530a7 Linux_Trojan_Gafgyt_807911a2 Linux_Trojan_Gafgyt_d4227dbf Linux_Trojan_Gafgyt_d996d335 Linux_Trojan_Gafgyt_620087b9 Linux_Trojan_Gafgyt_33b4111a Linux_Trojan_Mirai_e0cf29e2
Link:
https://app.threat.zone/submission/ed335307-a315-4642-ab46-8c834d89ea9f
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Mirai
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/721c20fc71e2e783c9298a51433c2ba6672279f8214e148e493a1cae6e534443

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:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:Linux_Trojan_Gafgyt_33b4111a
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_620087b9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_807911a2
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_9e9530a7
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d4227dbf
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d996d335
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_e0cf29e2
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 721c20fc71e2e783c9298a51433c2ba6672279f8214e148e493a1cae6e534443

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3254406/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3192434/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh

Comments