MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3f7493bbb0e9094f734c7fe53af0b2e311342652ed0d2e3acdae5d96113a54e. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3f7493bbb0e9094f734c7fe53af0b2e311342652ed0d2e3acdae5d96113a54e
SHA3-384 hash: a4ec568b71dcdcc29d61e61a3414e6527b9bb49acf964ccc4847a710767a6c5d1f75daf5370357bdf52f2a1f2467b3ec
SHA1 hash: 94bee610734af192d1841951e8d82161a39c68d1
MD5 hash: 6df713c903abf9f7e562850cc958b2d2
humanhash: may-cat-skylark-stairway
File name:riscv32
Download: download sample
Signature Mirai
Create hunting rule
File size:96'072 bytes
First seen:2025-03-30 11:18:22 UTC
Last seen:2025-04-18 15:26:03 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:jYSvxZEzA7H0sj/+vBUQlrvDPfg0P75zYpjpBS15ztH7w4eYZTwR8MvWj+IQWtif:jfwSpjWvJPYo5zYpjpBS1RFeUspWjHDA
TLSH T1B3937C55DC374B21C1F607F06FA98B0795D06B6A32D76B04C64CB638F64D4E862C2BAE
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
4
# of downloads :
60
Origin country :
DE DE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e92ae0cfd0a37f830a212dlinux22vpnfull_triage
Tags:
ransomware mirai
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated
Link:
https://www.filescan.io/uploads/67e928b2f274bf2d8e291030/reports/7e5c1318-5090-4004-9769-4064eaeae39f/overview
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/653c4c75-506b-4d1e-8e72-1f33de2a2757
Result
Threat name:
n/a
Detection:
malicious
Classification:
spyw.evad
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1652145
Signature
Multi AV Scanner detection for submitted file
Opens /sys/class/net/* files useful for querying network interface information
Sample deletes itself
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1652145 Sample: riscv32.elf Startdate: 30/03/2025 Architecture: LINUX Score: 56 23 Multi AV Scanner detection for submitted file 2->23 7 fwupd gpg riscv32.elf 2->7         started        10 fwupd gpgconf 2->10         started        12 fwupd gpgconf 2->12         started        14 16 other processes 2->14 process3 signatures4 25 Sample deletes itself 7->25 16 riscv32.elf 7->16         started        process5 signatures6 21 Opens /sys/class/net/* files useful for querying network interface information 16->21 19 riscv32.elf 16->19         started        process7
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b3f7493bbb0e9094f734c7fe53af0b2e311342652ed0d2e3acdae5d96113a54e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3f7493bbb0e9094f734c7fe53af0b2e311342652ed0d2e3acdae5d96113a54e/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-03-30 11:19:21 UTC
File Type:
ELF32 Little (Exe)
AV detection:
9 of 24 (37.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wp3uso53b2ijj5zuy77fhlylfyyrgqtff3infy5m3ls5syituvha._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/250330-neyqbszlz7/
Verdict:
Informative
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/67d75d82-aae5-4001-8c99-aef99b67d80c
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b3f7493bbb0e9094f734c7fe53af0b2e311342652ed0d2e3acdae5d96113a54e

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: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

File information

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

Web download

Mirai

elf b3f7493bbb0e9094f734c7fe53af0b2e311342652ed0d2e3acdae5d96113a54e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3495044/
  
Delivery method
Distributed via web download

Comments