MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4a844a50d5fe49442dd85f6b0b7750f229ad8b7e35261e2b9f911d846d6892f. 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: 8


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

SHA256 hash: a4a844a50d5fe49442dd85f6b0b7750f229ad8b7e35261e2b9f911d846d6892f
SHA3-384 hash: 1a25d67cce053e75b749b87b52e366164a90f3652f8bca397a24af2e91273182c5ee7d1bac16433e4aadcd51a10681cb
SHA1 hash: 0cb9963699672a7bf8c7cf7d45051692ff5bedf9
MD5 hash: ed63708f4b0560629ae5396cff482e6e
humanhash: south-monkey-uncle-salami
File name:arm.urbotnetisass
Download: download sample
Signature Mirai
Create hunting rule
File size:201'116 bytes
First seen:2025-09-11 15:52:33 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:auNWFLTLv59o/iYXcm/ssjaWpsD5Jwia8MZNUMnzt9aUWnGnbPNFRA:agELHLo/imws+TD5KiaZNUSxY8bNFRA
TLSH T170145A55BC918E56C6C166B7FB6E838D371703B8D3EE71039D145F64728B82A0E3BA81
telfhash t1c3d0a724d50550c0b211101665fa32053624f0ff3fc4020443b0bdb919676d18c52a07
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 :
58
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.31069.LX.BOT.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.31075.LX.BOT.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-7755770-0
Create hunting rule

Unix.Trojan.Mirai-9885259-0
Create hunting rule

Unix.Trojan.Gafgyt-9940653-0
Create hunting rule

Unix.Trojan.Mirai-9951087-0
Create hunting rule

Unix.Trojan.Mirai-10008934-0
Create hunting rule

Unix.Trojan.Gafgyt-6735924-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
anti-vm expand lolbin packed remote threat
Link:
https://www.filescan.io/uploads/68c2f04c0d1238ff0aaa31c8/reports/dd79a940-beec-474f-85f1-f101d3eebdc9/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-09-11T12:30:00Z UTC
Last seen:
2025-09-11T12:30:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a4a844a50d5fe49442dd85f6b0b7750f229ad8b7e35261e2b9f911d846d6892f/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/a92d575c-e66d-4d7b-a501-ef30e1fad7a4
Behavior Graph:
Download SVG
%3 guuid=358c86e9-1600-0000-a35b-b2a9aa0d0000 pid=3498 /usr/bin/sudo guuid=67f88beb-1600-0000-a35b-b2a9ae0d0000 pid=3502 /tmp/sample.bin guuid=358c86e9-1600-0000-a35b-b2a9aa0d0000 pid=3498->guuid=67f88beb-1600-0000-a35b-b2a9ae0d0000 pid=3502 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/767a09e5-9261-4014-a926-43c7f81d3224
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1775777
Signature
Antivirus / Scanner detection for submitted sample
Deletes system log files
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
Writes identical ELF files to multiple locations
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1775777 Sample: arm.urbotnetisass.elf Startdate: 11/09/2025 Architecture: LINUX Score: 92 47 94.154.35.153, 43212 SELECTELRU Ukraine 2->47 49 109.202.202.202, 80 INIT7CH Switzerland 2->49 51 3 other IPs or domains 2->51 53 Antivirus / Scanner detection for submitted sample 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 Yara detected Gafgyt 2->57 59 Yara detected Mirai 2->59 10 arm.urbotnetisass.elf 2->10         started        12 udisksd dumpe2fs 2->12         started        14 udisksd dumpe2fs 2->14         started        16 14 other processes 2->16 signatures3 process4 process5 18 arm.urbotnetisass.elf 10->18         started        file6 39 /memfd:/usr/lib/librt.so.1 (deleted), ELF 18->39 dropped 41 /memfd:/usr/lib/libpthread.so.0 (deleted), ELF 18->41 dropped 43 /memfd:/usr/lib/libm.so.6 (deleted), ELF 18->43 dropped 45 41 other malicious files 18->45 dropped 61 Writes identical ELF files to multiple locations 18->61 22 arm.urbotnetisass.elf 18->22         started        24 arm.urbotnetisass.elf 18->24         started        signatures7 process8 process9 26 arm.urbotnetisass.elf 22->26         started        29 arm.urbotnetisass.elf 24->29         started        signatures10 63 Sample reads /proc/mounts (often used for finding a writable filesystem) 26->63 65 Deletes system log files 26->65 31 arm.urbotnetisass.elf 26->31         started        33 arm.urbotnetisass.elf 26->33         started        35 arm.urbotnetisass.elf 26->35         started        37 7 other processes 26->37 process11
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a4a844a50d5fe49442dd85f6b0b7750f229ad8b7e35261e2b9f911d846d6892f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4a844a50d5fe49442dd85f6b0b7750f229ad8b7e35261e2b9f911d846d6892f/
Threat name:
Linux.Exploit.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-09-11 15:53:42 UTC
File Type:
ELF32 Little (Exe)
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=usuejjinl7sjiqw5qx3lbn3vb4rjvwfx4njgdyvz7ei5qrwwrexq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/250911-tbdhwavtfy/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-7755770-0
YARA:
n/a
Link:
https://app.threat.zone/submission/3524bea2-04c3-45ed-b15c-0bdb927198db
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/a4a844a50d5fe49442dd85f6b0b7750f229ad8b7e35261e2b9f911d846d6892f

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Generic_Threat_d94e1020
Create hunting rule
Author:Elastic Security
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

Mirai

elf a4a844a50d5fe49442dd85f6b0b7750f229ad8b7e35261e2b9f911d846d6892f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3618222/
  
Delivery method
Distributed via web download

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