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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4cbbb559004104056c092199ea59097f40737eb65c72b91e6170038df2d4e9c. 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 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4cbbb559004104056c092199ea59097f40737eb65c72b91e6170038df2d4e9c
SHA3-384 hash: 1d4dbd7ec54f6c370ed8a24d33b34e6c8fe17e1e11b1a0d97fd14ea5fa573ea8e28c6eb25a095e05bb5d0353a10500d4
SHA1 hash: de6129792d2ade1424927a83eea322b5bc516133
MD5 hash: 19fba2b49294ed6932db7a2354dd9fcb
humanhash: golf-carolina-earth-utah
File name:nz.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:108'148 bytes
First seen:2026-07-11 06:03:59 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:9d5qGekwumbRajd24WsA22811febx/S3HRQf:H5qGek6bRaj4V23GJS3HRQf
TLSH T1CEB33BC4E243D0F9DC560534213AFB379A73E5BF212DDA83D3A49AB26C96AC1D40679C
telfhash t12131d1fcb2770ce45bc09902f58e8b22cd0d7b2b296076a345b26924326755243bfc38
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 77ed8c7518a32663fb766f729075dcdddc355c8d6ebe381092df51bb891e0cfc
File size (compressed) :47'000 bytes
File size (de-compressed) :108'148 bytes
Format:linux/i386
Packed file: 77ed8c7518a32663fb766f729075dcdddc355c8d6ebe381092df51bb891e0cfc

Intelligence

File Origin
# of uploads :
1
# of downloads :
73
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
Mirai
Details
Link:
https://research.acce.ciphertechsolutions.com/results/06320563-8f0b-47c9-a19d-068a39944a00/
Detection(s):
Sanesecurity.Malware.29325.LC.Pl.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30435.LC.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-81.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-10007027-0
Create hunting rule

Unix.Dropper.Mirai-7135897-0
Create hunting rule

Unix.Dropper.Mirai-7135901-0
Create hunting rule

Unix.Dropper.Mirai-7135909-0
Create hunting rule

Unix.Dropper.Mirai-7135918-0
Create hunting rule

Unix.Dropper.Mirai-7135954-0
Create hunting rule

Unix.Dropper.Mirai-7136016-0
Create hunting rule

Unix.Dropper.Mirai-7136028-0
Create hunting rule

Unix.Trojan.Mirai-10009361-0
Create hunting rule

Unix.Trojan.Mirai-10011027-0
Create hunting rule

Unix.Trojan.Mirai-10011918-0
Create hunting rule

Unix.Trojan.Mirai-10059006-0
Create hunting rule

Unix.Trojan.Mirai-10059216-0
Create hunting rule

Unix.Trojan.Mirai-7100807-0
Create hunting rule

Unix.Trojan.Mirai-7135916-0
Create hunting rule

Unix.Trojan.Mirai-8025795-0
Create hunting rule

Unix.Trojan.Mirai-9441505-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Connection attempt
Receives data from a server
Runs as daemon
DNS request
Opens a port
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
masquerade
Link:
https://www.filescan.io/uploads/6a51dd00a76a613f7539bf63/reports/2883299f-9717-4c01-92e6-30a3bd569cd5/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-07-11T04:08:00Z UTC
Last seen:
2026-07-12T18:24:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b4cbbb559004104056c092199ea59097f40737eb65c72b91e6170038df2d4e9c/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/3fa43ec7-b4e9-4250-9c05-4d0e67b238e6
Behavior Graph:
Download SVG
%3 guuid=75348253-1b00-0000-7ae2-d0f1670b0000 pid=2919 /usr/bin/sudo guuid=b61fe255-1b00-0000-7ae2-d0f16f0b0000 pid=2927 /tmp/sample.bin net guuid=75348253-1b00-0000-7ae2-d0f1670b0000 pid=2919->guuid=b61fe255-1b00-0000-7ae2-d0f16f0b0000 pid=2927 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=b61fe255-1b00-0000-7ae2-d0f16f0b0000 pid=2927->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=0ccd1d56-1b00-0000-7ae2-d0f1710b0000 pid=2929 /tmp/sample.bin guuid=b61fe255-1b00-0000-7ae2-d0f16f0b0000 pid=2927->guuid=0ccd1d56-1b00-0000-7ae2-d0f1710b0000 pid=2929 clone guuid=3c3aef82-1c00-0000-7ae2-d0f1880d0000 pid=3464 /tmp/sample.bin guuid=b61fe255-1b00-0000-7ae2-d0f16f0b0000 pid=2927->guuid=3c3aef82-1c00-0000-7ae2-d0f1880d0000 pid=3464 clone guuid=5f81fb82-1c00-0000-7ae2-d0f1890d0000 pid=3465 /tmp/sample.bin net send-data zombie guuid=b61fe255-1b00-0000-7ae2-d0f16f0b0000 pid=2927->guuid=5f81fb82-1c00-0000-7ae2-d0f1890d0000 pid=3465 clone guuid=f2a52556-1b00-0000-7ae2-d0f1720b0000 pid=2930 /tmp/sample.bin guuid=0ccd1d56-1b00-0000-7ae2-d0f1710b0000 pid=2929->guuid=f2a52556-1b00-0000-7ae2-d0f1720b0000 pid=2930 clone guuid=8cb83256-1b00-0000-7ae2-d0f1730b0000 pid=2931 /tmp/sample.bin dns net send-data zombie guuid=0ccd1d56-1b00-0000-7ae2-d0f1710b0000 pid=2929->guuid=8cb83256-1b00-0000-7ae2-d0f1730b0000 pid=2931 clone guuid=8cb83256-1b00-0000-7ae2-d0f1730b0000 pid=2931->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 222B b107fb09-3c02-5397-a471-d4ec73c82dff s3onfd.bounceme.net:69 guuid=8cb83256-1b00-0000-7ae2-d0f1730b0000 pid=2931->b107fb09-3c02-5397-a471-d4ec73c82dff send: 4B guuid=5f81fb82-1c00-0000-7ae2-d0f1890d0000 pid=3465->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 950B 310a0ed0-c544-54ca-bf3f-fca55e459297 65.222.202.53:80 guuid=5f81fb82-1c00-0000-7ae2-d0f1890d0000 pid=3465->310a0ed0-c544-54ca-bf3f-fca55e459297 send: 2B
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ec0cb0f4-5ecb-400d-a68c-f1041124e3fb
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1940868
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1940868 Sample: nz.x86.elf Startdate: 11/07/2026 Architecture: LINUX Score: 80 22 169.254.169.254, 80 USDOS-USDepartmentofStateUS ZZ 2->22 24 s3onfd.bounceme.net 41.216.189.92, 48708, 69 PRIVATEHOSTING-NETIT Germany 2->24 26 2 other IPs or domains 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Antivirus / Scanner detection for submitted sample 2->30 32 Multi AV Scanner detection for submitted file 2->32 34 Yara detected Mirai 2->34 8 nz.x86.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 process4 process5 12 nz.x86.elf 8->12         started        14 nz.x86.elf 8->14         started        16 nz.x86.elf 8->16         started        process6 18 nz.x86.elf 12->18         started        20 nz.x86.elf 12->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b4cbbb559004104056c092199ea59097f40737eb65c72b91e6170038df2d4e9c
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4cbbb559004104056c092199ea59097f40737eb65c72b91e6170038df2d4e9c/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-07-11 06:08:04 UTC
File Type:
ELF32 Little (Exe)
AV detection:
27 of 37 (72.97%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wtf3wvmqaqieavwasimz5jmqs72aon7lmxdsxepgc4adrxznj2oa._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion discovery linux
Link:
https://tria.ge/reports/260711-gs27caez4t/
Behaviour
Reads runtime system information
Enumerates running processes
Writes file to system bin folder
Modifies Watchdog functionality
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/b4cbbb559004104056c092199ea59097f40737eb65c72b91e6170038df2d4e9c

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:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
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_5bf62ce4
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_389ee3e9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_804f8e7c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_88de437f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_8aa7b5d3
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_93fc3657
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_99d78950
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_a68e498c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_ae9d0fa6
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_b14f4c5d
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_fa3ad9d0
Create hunting rule
Author:Elastic Security
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: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: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 f1bed76655cc8cce9ee9ac2857fed6b6cf1eb6a6d5446ae8144b6529d07ddf77

Mirai

elf 77ed8c7518a32663fb766f729075dcdddc355c8d6ebe381092df51bb891e0cfc

Mirai

elf b4cbbb559004104056c092199ea59097f40737eb65c72b91e6170038df2d4e9c

(this sample)

  
Dropped by
SHA256 77ed8c7518a32663fb766f729075dcdddc355c8d6ebe381092df51bb891e0cfc
  
URLhaus
https://urlhaus.abuse.ch/url/3884778/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 e44140b2cd901df6a7ca55235b5a4e74
  
URLhaus
https://urlhaus.abuse.ch/url/3884912/
  
URLhaus
https://urlhaus.abuse.ch/url/3884926/

Comments