MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7b81b5ac951a02eefd5e0e401aabc2bb463365ed69dbd862c719bcb28646b33e. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7b81b5ac951a02eefd5e0e401aabc2bb463365ed69dbd862c719bcb28646b33e
SHA3-384 hash: 9e447221f526545377cb63af1c217de094acaaecc51fdbdc764241f186f4ceee9f3efaa1149863f8ed8b52c49779e593
SHA1 hash: 330223089506777928192c9ece3b843dc90b0140
MD5 hash: de13a8a7f3fb23b3efe49bc853229c30
humanhash: magnesium-charlie-william-nitrogen
File name:nz.arm
Download: download sample
Signature Mirai
Create hunting rule
File size:41'660 bytes
First seen:2026-06-19 06:09:53 UTC
Last seen:2026-06-19 12:48:57 UTC
File type: elf
MIME type:application/x-executable
ssdeep 768:rw6lTQWQ97oJpm68luHy7T7+9AtU+jToXIygamC43yIIRZOs3Uozb:1+WQ97Sm68luHyr+9AtUATpldCbPzb
TLSH T19A13013126017EA5C564EC3CAF39C54553E50FB4E0EEBF3A2B494A5073E5D2123BC299
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
File size (compressed) :41'660 bytes
File size (de-compressed) :92'176 bytes
Format:linux/arm
Unpacked file: c53349de2a26fe73d2efe8d26dc75140cec2f16b3d5e6861314c86c37d82a18d

Intelligence

File Origin
# of uploads :
2
# of downloads :
53
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/a2f84033-8b30-40ad-be6f-10221c69df31/
Detection(s):
SecuriteInfo.com.Linux.Mirai-18.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed upx
Link:
https://www.filescan.io/uploads/6a34dd5690632a45f72bde14/reports/da67c91d-0e0b-4fc0-86fb-b2b34b42ac34/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
48
Number of processes launched:
5
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/7b81b5ac951a02eefd5e0e401aabc2bb463365ed69dbd862c719bcb28646b33e
Behaviour
Information Gathering
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/bd930da9-485a-4da7-92b5-2f22010414ae
Behavior Graph:
Download SVG
%3 guuid=68e52c0a-1a00-0000-4945-b5fa190d0000 pid=3353 /usr/bin/sudo guuid=83f1f70b-1a00-0000-4945-b5fa200d0000 pid=3360 /tmp/sample.bin guuid=68e52c0a-1a00-0000-4945-b5fa190d0000 pid=3353->guuid=83f1f70b-1a00-0000-4945-b5fa200d0000 pid=3360 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bbf42a83-271d-49ac-b309-594d31912a98
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1930882
Signature
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Sample is packed with UPX
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1930882 Sample: nz.arm.elf Startdate: 19/06/2026 Architecture: LINUX Score: 72 22 u87yy3f87b23f8293bfg83bgu94.bombamodzik.xyz 2->22 24 u87yy3f87b23f8293bfg83bgu94.bombamodzik.xyz 176.65.139.195, 53554, 53556, 53558 STORMINDUSTRIESHostingServicesUS Netherlands 2->24 26 daisy.ubuntu.com 2->26 28 Antivirus / Scanner detection for submitted sample 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Yara detected Mirai 2->32 34 Sample is packed with UPX 2->34 8 nz.arm.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 36 Performs DNS queries to domains with low reputation 22->36 process4 process5 12 nz.arm.elf 8->12         started        14 nz.arm.elf 8->14         started        16 nz.arm.elf 8->16         started        process6 18 nz.arm.elf 12->18         started        20 nz.arm.elf 12->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/7b81b5ac951a02eefd5e0e401aabc2bb463365ed69dbd862c719bcb28646b33e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7b81b5ac951a02eefd5e0e401aabc2bb463365ed69dbd862c719bcb28646b33e/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=poa3llevdibo57k6bzabvk6cxnddgzpnnhn5qywhdg6lfbsgwm7a._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
upx
Link:
https://tria.ge/reports/260619-gxb6qafv21/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/7b81b5ac951a02eefd5e0e401aabc2bb463365ed69dbd862c719bcb28646b33e

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:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
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:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

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

Web download

Mirai

elf 7b81b5ac951a02eefd5e0e401aabc2bb463365ed69dbd862c719bcb28646b33e

(this sample)

Mirai

elf c53349de2a26fe73d2efe8d26dc75140cec2f16b3d5e6861314c86c37d82a18d

  
URLhaus
https://urlhaus.abuse.ch/url/3864450/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3864318/
  
Dropping
SHA256 c53349de2a26fe73d2efe8d26dc75140cec2f16b3d5e6861314c86c37d82a18d
  
Dropping
MD5 adee881af04aa0413d6eb6a2be3af29a

Comments