MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0. 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 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0
SHA3-384 hash: 9f55d4939f8901a995b2388d395531b79ebf83317dc0136ce309be14464638fce31ef384b21697e121f3577d12b01f94
SHA1 hash: 7cd89293a8d6fca929e0738494d7d768b78f4802
MD5 hash: 6f4760e98f21bce0b93357cda8d813c6
humanhash: artist-avocado-oven-early
File name:mao.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:59'632 bytes
First seen:2026-01-31 16:41:11 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:eGVwqp/Tp8mqYH55NEvdnUE+xDv9AwAUeDbabkb1mYgIJaV6:Yqp/N8m9baFnUEYj9AwAU4aHU
TLSH T102435CC8E59BE8F8EC050E312532EF32D9B6E53E2128EC97D7E96532ED85602D41529C
telfhash t1ff11e7f616be0cd8e7d09910c24eaf624959e47765a033604371c61937afc5710b9c3c
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 :
1
# of downloads :
50
Origin country :
DE DE
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/7ae0d266-fdfa-470a-a764-689da0b2e1e0/
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-9907086-0
Create hunting rule

Unix.Dropper.Mirai-10008433-0
Create hunting rule

Unix.Trojan.Mirai-10030493-0
Create hunting rule

Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
1
Number of processes launched:
5
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-31T13:47:00Z UTC
Last seen:
2026-02-02T00:46:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.es HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/ebdaa5ba-d24b-401a-8aa5-a0ce21191fc7
Behavior Graph:
Download SVG
%3 guuid=0a0a6328-2200-0000-29d8-ca9c81090000 pid=2433 /usr/bin/sudo guuid=3166012c-2200-0000-29d8-ca9c88090000 pid=2440 /tmp/sample.bin net guuid=0a0a6328-2200-0000-29d8-ca9c81090000 pid=2433->guuid=3166012c-2200-0000-29d8-ca9c88090000 pid=2440 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=3166012c-2200-0000-29d8-ca9c88090000 pid=2440->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=8ce2552c-2200-0000-29d8-ca9c8a090000 pid=2442 /tmp/sample.bin guuid=3166012c-2200-0000-29d8-ca9c88090000 pid=2440->guuid=8ce2552c-2200-0000-29d8-ca9c8a090000 pid=2442 clone guuid=b0f95d2c-2200-0000-29d8-ca9c8b090000 pid=2443 /tmp/sample.bin dns net send-data zombie guuid=3166012c-2200-0000-29d8-ca9c88090000 pid=2440->guuid=b0f95d2c-2200-0000-29d8-ca9c8b090000 pid=2443 clone guuid=b0f95d2c-2200-0000-29d8-ca9c8b090000 pid=2443->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 29B a11803fe-5fd8-544d-b13b-84f58f3c81f8 mn.34509.su:25565 guuid=b0f95d2c-2200-0000-29d8-ca9c8b090000 pid=2443->a11803fe-5fd8-544d-b13b-84f58f3c81f8 send: 14B guuid=f54d7d2c-2200-0000-29d8-ca9c8c090000 pid=2444 /tmp/sample.bin guuid=b0f95d2c-2200-0000-29d8-ca9c8b090000 pid=2443->guuid=f54d7d2c-2200-0000-29d8-ca9c8c090000 pid=2444 clone guuid=c124872c-2200-0000-29d8-ca9c8d090000 pid=2445 /tmp/sample.bin dns net send-data guuid=b0f95d2c-2200-0000-29d8-ca9c8b090000 pid=2443->guuid=c124872c-2200-0000-29d8-ca9c8d090000 pid=2445 clone guuid=c124872c-2200-0000-29d8-ca9c8d090000 pid=2445->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 29B guuid=c124872c-2200-0000-29d8-ca9c8d090000 pid=2445->a11803fe-5fd8-544d-b13b-84f58f3c81f8 send: 14B
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b47a073b-5416-4d73-92a0-6f0f0214494a
Result
Threat name:
Okiru
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1860970
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Okiru
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1860970 Sample: mao.x86.elf Startdate: 31/01/2026 Architecture: LINUX Score: 64 18 mn.34509.su 185.242.3.127, 25565, 58464, 58466 ATOM3-ASUA Ukraine 2->18 20 Malicious sample detected (through community Yara rule) 2->20 22 Multi AV Scanner detection for submitted file 2->22 24 Yara detected Okiru 2->24 8 mao.x86.elf 2->8         started        signatures3 process4 process5 10 mao.x86.elf 8->10         started        12 mao.x86.elf 8->12         started        process6 14 mao.x86.elf 10->14         started        16 mao.x86.elf 10->16         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-31 16:34:51 UTC
File Type:
ELF32 Little (Exe)
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wsar6xyhllf6tpnbnkfv5iuys25bixb2r4juvn32374nj4vudhqa._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion linux
Link:
https://tria.ge/reports/260131-t7capacz9d/
Behaviour
Changes its process name
Modifies Watchdog functionality
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.84
Link:
https://yomi.yoroi.company/submissions/b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0

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_Threat_3bcc1630
Create hunting rule
Author:Elastic Security
Rule name:Linux_Generic_Threat_da28eb8b
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: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 b4811f5f075acbe9bda16a8b5ea29896ba145c3a8f134ab77adff8d4f2b419e0

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3766685/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3766749/

Comments