MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 657440f542bb2265caaa453cd0b426887b58f8b3ecb67d2c3ddd99f25ab433a2. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 657440f542bb2265caaa453cd0b426887b58f8b3ecb67d2c3ddd99f25ab433a2
SHA3-384 hash: bd3f9f717b96d93a2d1be56751e7c68d213ce54a272920a156d6749594bd979dec24c0ad9f0e12c72ce0d3d04ab63bf6
SHA1 hash: 24ce708f059e74452aa2e3c44098e3fcc2f60932
MD5 hash: 3f7dc2e197f4e0a371373dc1388c83a0
humanhash: bravo-stairway-india-white
File name:morte.x86_64
Download: download sample
Signature Mirai
Create hunting rule
File size:41'448 bytes
First seen:2025-10-20 23:36:27 UTC
Last seen:2025-10-21 10:41:07 UTC
File type: elf
MIME type:application/x-executable
ssdeep 768:WLAnBgdfe6mJECgGfR/iYCsoRXJZN87XVbbnRiRDFwGBkBQ5jdx02K:WsBefetERGfRJCsyZuX1R8DTDK
TLSH T1A913E1F75237E2F4C4B452F9AD6592C0ED362513354387AA05CA70AE88E8EA15738F73
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 :
55
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Linux.Mirai-19.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Opens a port
Sends data to a server
Changes access rights for a file
Receives data from a server
Connection attempt
Kills processes
Changes access rights for a written file
Runs as daemon
Deleting of the original file
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
packed threat upx
Link:
https://www.filescan.io/uploads/68f6c78c3a79800405ed291e/reports/dc890acf-6d02-4ed3-9ad5-d2e24c3462a0/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2025-10-20T20:47:00Z UTC
Last seen:
2025-10-20T22:35:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.r HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.bl HEUR:Backdoor.Linux.Gafgyt.bj
Link:
https://opentip.kaspersky.com/657440f542bb2265caaa453cd0b426887b58f8b3ecb67d2c3ddd99f25ab433a2/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/e612ba64-afd3-4059-9a0d-cc3e929096ff
Behavior Graph:
Download SVG
%3 guuid=ffcf7f73-1a00-0000-6185-ae4f530e0000 pid=3667 /usr/bin/sudo guuid=599d6376-1a00-0000-6185-ae4f570e0000 pid=3671 /tmp/sample.bin delete-file mprotect-exec net guuid=ffcf7f73-1a00-0000-6185-ae4f530e0000 pid=3667->guuid=599d6376-1a00-0000-6185-ae4f570e0000 pid=3671 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=599d6376-1a00-0000-6185-ae4f570e0000 pid=3671->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=ec05a177-1a00-0000-6185-ae4f5c0e0000 pid=3676 /tmp/sample.bin zombie guuid=599d6376-1a00-0000-6185-ae4f570e0000 pid=3671->guuid=ec05a177-1a00-0000-6185-ae4f5c0e0000 pid=3676 clone guuid=071eaa77-1a00-0000-6185-ae4f5e0e0000 pid=3678 /tmp/sample.bin guuid=599d6376-1a00-0000-6185-ae4f570e0000 pid=3671->guuid=071eaa77-1a00-0000-6185-ae4f5e0e0000 pid=3678 clone guuid=f0dbb177-1a00-0000-6185-ae4f600e0000 pid=3680 /tmp/sample.bin net send-data zombie guuid=599d6376-1a00-0000-6185-ae4f570e0000 pid=3671->guuid=f0dbb177-1a00-0000-6185-ae4f600e0000 pid=3680 clone guuid=1ccba977-1a00-0000-6185-ae4f5d0e0000 pid=3677 /tmp/sample.bin guuid=ec05a177-1a00-0000-6185-ae4f5c0e0000 pid=3676->guuid=1ccba977-1a00-0000-6185-ae4f5d0e0000 pid=3677 clone guuid=c847ac77-1a00-0000-6185-ae4f5f0e0000 pid=3679 /tmp/sample.bin guuid=ec05a177-1a00-0000-6185-ae4f5c0e0000 pid=3676->guuid=c847ac77-1a00-0000-6185-ae4f5f0e0000 pid=3679 clone guuid=f0dbb177-1a00-0000-6185-ae4f600e0000 pid=3680->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 675B 9ecbdff7-028a-5e1a-92fe-e6406d074277 143.20.185.225:12121 guuid=f0dbb177-1a00-0000-6185-ae4f600e0000 pid=3680->9ecbdff7-028a-5e1a-92fe-e6406d074277 con
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/94fbf17b-24d5-4a63-8c5e-5252539cec80
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1798751
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample is packed with UPX
Sends malformed DNS queries
Uses dynamic DNS services
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1798751 Sample: morte.x86_64.elf Startdate: 21/10/2025 Architecture: LINUX Score: 80 23 ultrauraniummirai.ddns.net. [malformed] 2->23 25 169.254.169.254, 80 USDOSUS Reserved 2->25 27 2 other IPs or domains 2->27 31 Malicious sample detected (through community Yara rule) 2->31 33 Multi AV Scanner detection for submitted file 2->33 35 Yara detected Mirai 2->35 37 Sample is packed with UPX 2->37 8 morte.x86_64.elf 2->8         started        10 python3.8 dpkg 2->10         started        signatures3 39 Sends malformed DNS queries 23->39 41 Uses dynamic DNS services 23->41 process4 process5 12 morte.x86_64.elf 8->12         started        14 morte.x86_64.elf 8->14         started        16 morte.x86_64.elf 8->16         started        process6 18 morte.x86_64.elf 12->18         started        21 morte.x86_64.elf 12->21         started        signatures7 29 Sample deletes itself 18->29
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/657440f542bb2265caaa453cd0b426887b58f8b3ecb67d2c3ddd99f25ab433a2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/657440f542bb2265caaa453cd0b426887b58f8b3ecb67d2c3ddd99f25ab433a2/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/657440f542bb2265caaa453cd0b426887b58f8b3ecb67d2c3ddd99f25ab433a2
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-10-20 23:37:36 UTC
File Type:
ELF64 Little (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mv2eb5kcxmrglsvkiu6nbnbgrb5vr6ft5s3h2lb53wm7ewvugora._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion discovery linux upx
Link:
https://tria.ge/reports/251020-3lzcrs1mev/
Behaviour
Reads runtime system information
Reads system network configuration
Enumerates active TCP sockets
Enumerates running processes
Writes file to system bin folder
Deletes itself
Modifies Watchdog functionality
Mirai
Mirai family
Malware Config
C2 Extraction:
ultrauraniummirai.ddns.net
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/657440f542bb2265caaa453cd0b426887b58f8b3ecb67d2c3ddd99f25ab433a2

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: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: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 657440f542bb2265caaa453cd0b426887b58f8b3ecb67d2c3ddd99f25ab433a2

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3630225/
  
Delivery method
Distributed via web download

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