MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81f2c3ad4ac29556a4315c4d86e6fb824f4271d94c1cd55e26a39876fbdb6763. 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: 12


Intelligence 12 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81f2c3ad4ac29556a4315c4d86e6fb824f4271d94c1cd55e26a39876fbdb6763
SHA3-384 hash: a8b2e4b70ef9e6f058a01bd138ef03db4b6cce7a6752e9c1b31529534c749468132688a2e711804d3ecaf2d9e9967b3c
SHA1 hash: ae1d55faa743d1dad8ffba15662d335119378a8b
MD5 hash: dcba7872cf884016da1ca1d883762c12
humanhash: green-nitrogen-low-freddie
File name:x86_32.uhavenobotsxd
Download: download sample
Signature Mirai
Create hunting rule
File size:69'364 bytes
First seen:2025-11-09 18:22:31 UTC
Last seen:2025-11-10 14:50:21 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:GuMIMgbvdzWWjmAY3KHpYPC8LkklfULB0S+8e6:GXgPjg3Ap+C+NlIR5
TLSH T196635CC5D643D4F5FC2242785137BBB78632E6391215FE46CB68BA32AC16A02B71B35C
telfhash t10b3108fb4d7a1dd8b7e4a400c31f27e5296ac63b152076d58563dda822eadc180bec3d
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 :
2
# of downloads :
40
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Trojan.Mirai-10001386-0
Create hunting rule

Unix.Trojan.Mirai-10010127-0
Create hunting rule

Unix.Trojan.Mirai-10017351-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Kills processes
Sends data to a server
Receives data from a server
Runs as daemon
Opens a port
Substitutes an application name
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
mirai
Link:
https://www.filescan.io/uploads/6910dc118938e2fe22197d23/reports/93752c9a-92bf-4540-9bb2-14786b60eb54/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
6
Number of processes launched:
3
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/81f2c3ad4ac29556a4315c4d86e6fb824f4271d94c1cd55e26a39876fbdb6763
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:
2025-11-09T16:06:00Z UTC
Last seen:
2025-11-09T21:32:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Gafgyt.gu
Link:
https://opentip.kaspersky.com/81f2c3ad4ac29556a4315c4d86e6fb824f4271d94c1cd55e26a39876fbdb6763/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0b77b7d6-3930-4c30-b135-d4a779d445f1
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1811002
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1811002 Sample: x86_32.uhavenobotsxd.elf Startdate: 09/11/2025 Architecture: LINUX Score: 64 37 Malicious sample detected (through community Yara rule) 2->37 39 Multi AV Scanner detection for submitted file 2->39 8 x86_32.uhavenobotsxd.elf 2->8         started        process3 signatures4 45 Sample reads /proc/mounts (often used for finding a writable filesystem) 8->45 11 x86_32.uhavenobotsxd.elf 8->11         started        process5 process6 13 x86_32.uhavenobotsxd.elf 11->13         started        15 x86_32.uhavenobotsxd.elf 11->15         started        17 x86_32.uhavenobotsxd.elf 11->17         started        19 10 other processes 11->19 signatures7 22 x86_32.uhavenobotsxd.elf 13->22         started        25 x86_32.uhavenobotsxd.elf 15->25         started        27 x86_32.uhavenobotsxd.elf 17->27         started        41 Sample tries to kill multiple processes (SIGKILL) 19->41 29 x86_32.uhavenobotsxd.elf 19->29         started        31 x86_32.uhavenobotsxd.elf 19->31         started        33 x86_32.uhavenobotsxd.elf 19->33         started        35 6 other processes 19->35 process8 signatures9 43 Sample tries to kill multiple processes (SIGKILL) 25->43
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/81f2c3ad4ac29556a4315c4d86e6fb824f4271d94c1cd55e26a39876fbdb6763
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/81f2c3ad4ac29556a4315c4d86e6fb824f4271d94c1cd55e26a39876fbdb6763/
Verdict:
Malicious
Threat:
Backdoor.Linux.Gafgyt
Link:
https://tip.neiki.dev/file/81f2c3ad4ac29556a4315c4d86e6fb824f4271d94c1cd55e26a39876fbdb6763
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-09 18:23:15 UTC
File Type:
ELF32 Little (Exe)
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhzmhlkkykkvnjbrlrgynzx3qjhue4ozjqonkxrguomhn663m5rq._file
Result
Malware family:
n/a
Score:
  4/10
Tags:
discovery linux
Link:
https://tria.ge/reports/251109-w1j33afr71/
Behaviour
Reads runtime system information
Changes its process name
Verdict:
Malicious
Tags:
trojan mirai Unix.Trojan.Mirai-10001386-0
YARA:
Linux_Trojan_Mirai_b14f4c5d Linux_Trojan_Mirai_5f7b67b8 Linux_Trojan_Mirai_ae9d0fa6 Linux_Trojan_Mirai_389ee3e9 Linux_Trojan_Mirai_cc93863b
Link:
https://app.threat.zone/submission/4bf4cc29-b36f-47b9-9d5c-0a114d018381
Please note that we are no longer able to provide a coverage score for Virus Total.

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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:Linux_Trojan_Mirai_389ee3e9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_5f7b67b8
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: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 81f2c3ad4ac29556a4315c4d86e6fb824f4271d94c1cd55e26a39876fbdb6763

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3687976/
  
Delivery method
Distributed via web download

Comments