MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8a732a632c0cd50dfb807cd068f4bad0c1ec3050affebb735d7032401798e2f. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8a732a632c0cd50dfb807cd068f4bad0c1ec3050affebb735d7032401798e2f
SHA3-384 hash: cb6b21445c03228a1e97a4c0c4ae9abe0f961a184889f80a4878adbe895d6e5e81215e3e3b7c93ee2fbe61958425a2f8
SHA1 hash: 9352409d2161fde2b7a847ebda30deb210264c1d
MD5 hash: c7a31be28f15f636ec3fe576db0927db
humanhash: two-seven-louisiana-burger
File name:ntarm
Download: download sample
Signature Mirai
Create hunting rule
File size:75'392 bytes
First seen:2025-12-23 02:44:19 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:c1VzhypU0Lw5znGwHQJqFd82Ox/FwhO9NsFaZvzs/F:c1Vg8jvwJq77wb6
TLSH T127733A91B9815613C6D112BBFB5E02CE372613A8E2EF7207DD22AF21378785B0E77651
telfhash t18d319c745a880ecca2a1ce40828f757a779935b6af1626254f6b3f1f43432d0b22a426
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 37490b35b3b2ad15b38e07c6d2614e277d2a43c76355f140c7c7ef6d7cf0f5ac
File size (compressed) :35'332 bytes
File size (de-compressed) :75'392 bytes
Format:linux/arm
Packed file: 37490b35b3b2ad15b38e07c6d2614e277d2a43c76355f140c7c7ef6d7cf0f5ac

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
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/484bb420-b200-4a07-adf0-13a42356f6e4/
Detection(s):
Unix.Trojan.Mirai-9858729-0
Create hunting rule

Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-12-23T01:03:00Z UTC
Last seen:
2025-12-23T01:51:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b8a732a632c0cd50dfb807cd068f4bad0c1ec3050affebb735d7032401798e2f/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/593f5931-01ee-4617-b026-34b5ab490cc6
Behavior Graph:
Download SVG
%3 guuid=45d346ed-1900-0000-9557-089b4b0c0000 pid=3147 /usr/bin/sudo guuid=231e02f0-1900-0000-9557-089b500c0000 pid=3152 /tmp/sample.bin guuid=45d346ed-1900-0000-9557-089b4b0c0000 pid=3147->guuid=231e02f0-1900-0000-9557-089b500c0000 pid=3152 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0a9d77ad-5887-49cb-a48d-4b9750717d2c
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1838019
Signature
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Sample deletes itself
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1838019 Sample: ntarm.elf Startdate: 23/12/2025 Architecture: LINUX Score: 68 25 169.254.169.254, 80 USDOSUS Reserved 2->25 27 94.156.152.67, 18129, 34850 NET1-ASBG Bulgaria 2->27 29 daisy.ubuntu.com 162.213.35.24, 38420, 443 CANONICAL-ASGB United States 2->29 31 Antivirus / Scanner detection for submitted sample 2->31 33 Multi AV Scanner detection for submitted file 2->33 35 Yara detected Mirai 2->35 8 ntarm.elf 2->8         started        11 systemd snap-failure 2->11         started        13 python3.8 dpkg 2->13         started        signatures3 process4 signatures5 37 Sample deletes itself 8->37 15 ntarm.elf 8->15         started        17 snap-failure systemctl 11->17         started        19 snap-failure 11->19         started        process6 process7 21 ntarm.elf 15->21         started        23 ntarm.elf 15->23         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b8a732a632c0cd50dfb807cd068f4bad0c1ec3050affebb735d7032401798e2f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8a732a632c0cd50dfb807cd068f4bad0c1ec3050affebb735d7032401798e2f/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-23 02:45:19 UTC
File Type:
ELF32 Little (Exe)
AV detection:
16 of 36 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xcttfjrsydgvbx5ya7gqnd2lvugb5qyfbl76xnzv24bsialzryxq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:mirai
Link:
https://tria.ge/reports/251223-c8y3eavkcv/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-9858729-0
YARA:
n/a
Link:
https://app.threat.zone/submission/ef5fc12d-f821-439b-bb62-0f55a784223c
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.64
Link:
https://yomi.yoroi.company/submissions/b8a732a632c0cd50dfb807cd068f4bad0c1ec3050affebb735d7032401798e2f

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_Generic_Threat_d94e1020
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

sh f9880bbe5a89d7f785f0aadf21949d7348386abe000122689e28bf57427ae803

Mirai

elf 37490b35b3b2ad15b38e07c6d2614e277d2a43c76355f140c7c7ef6d7cf0f5ac

Mirai

elf b8a732a632c0cd50dfb807cd068f4bad0c1ec3050affebb735d7032401798e2f

(this sample)

  
Dropped by
SHA256 37490b35b3b2ad15b38e07c6d2614e277d2a43c76355f140c7c7ef6d7cf0f5ac
  
URLhaus
https://urlhaus.abuse.ch/url/3740742/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 d48c1d5f11905783d9fdea688151c776
  
URLhaus
https://urlhaus.abuse.ch/url/3742383/
  
URLhaus
https://urlhaus.abuse.ch/url/3742418/

Comments