MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91a17b97dbb95ae1e5d1bdb363ae0156d67da47fcb025cdb72e6e618e90ef303. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 91a17b97dbb95ae1e5d1bdb363ae0156d67da47fcb025cdb72e6e618e90ef303
SHA3-384 hash: bac596acaa43008488d1653d2dec13981b8a076dda1c503eea9954eb18a17c68b897458a5d3cc9bfb94f9be2e56e6843
SHA1 hash: 3f38f5cce2eb11931c4e5390b8dbfa72d7f6c797
MD5 hash: 91a3b7f067e265ce3e5b8d69fb152afa
humanhash: angel-nuts-emma-louisiana
File name:mipsel.uhavenobotsxd
Download: download sample
Signature Mirai
Create hunting rule
File size:108'716 bytes
First seen:2025-11-19 16:35:37 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:xookxC3ydZ2/QeD8XTTjWl11/giEGFBC8mwOsj5X5dyiMZ3TggX+dpDRbAryZtEY:xookxU/QeArWldE0BDm7vRQzxZtE4
TLSH T1A1B3F70AEF910EFBE86FCC3746E9074925CC691612B87B763974C52CF25E14B0AE3964
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 :
88
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-10001386-0
Create hunting rule

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

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

Unix.Trojan.Mirai-10017641-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Changes access rights for a written file
Sets a written file as executable
Changes the time when the file was created, accessed, or modified
Runs as daemon
Receives data from a server
Creating a file
Kills processes
Opens a port
Sends data to a server
Launching a process
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Writes files to system directory
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
bash lolbin
Link:
https://www.filescan.io/uploads/691df2071c15a0621ceacfed/reports/aede0aad-e5fe-4fc2-b1d8-fcbe6a3ea5e2/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
not packed
Botnet:
unknown
Number of open files:
7
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/91a17b97dbb95ae1e5d1bdb363ae0156d67da47fcb025cdb72e6e618e90ef303
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-11-19T14:48:00Z UTC
Last seen:
2025-11-20T01:26:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/91a17b97dbb95ae1e5d1bdb363ae0156d67da47fcb025cdb72e6e618e90ef303/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/39b5920e-cb7b-45b1-9330-22fc1b14fe2b
Behavior Graph:
Download SVG
%3 guuid=7a30197a-1a00-0000-49af-f177b0090000 pid=2480 /usr/bin/sudo guuid=3ef2657c-1a00-0000-49af-f177b9090000 pid=2489 /tmp/sample.bin guuid=7a30197a-1a00-0000-49af-f177b0090000 pid=2480->guuid=3ef2657c-1a00-0000-49af-f177b9090000 pid=2489 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/09c29bc7-2842-4a72-a427-469029c97487
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1817058
Signature
Drops files in suspicious directories
Drops invisible ELF files
Executes the "crontab" command typically for achieving persistence
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1817058 Sample: mipsel.uhavenobotsxd.elf Startdate: 19/11/2025 Architecture: LINUX Score: 80 56 94.154.35.153, 40682, 6969 SELECTELRU Ukraine 2->56 58 80.91.223.117 KBIHELLASGR Greece 2->58 60 44.215.79.92, 40472, 40474, 40476 AMAZON-AESUS United States 2->60 9 mipsel.uhavenobotsxd.elf 2->9         started        process3 signatures4 64 Sample reads /proc/mounts (often used for finding a writable filesystem) 9->64 12 mipsel.uhavenobotsxd.elf 9->12         started        process5 file6 48 /var/spool/cron/root, ASCII 12->48 dropped 50 /var/spool/cron/crontabs/root, ASCII 12->50 dropped 52 /root/.bashrc, ASCII 12->52 dropped 54 6 other malicious files 12->54 dropped 76 Sample tries to set files in /etc globally writable 12->76 78 Sample tries to persist itself using /etc/profile 12->78 80 Drops files in suspicious directories 12->80 82 3 other signatures 12->82 16 mipsel.uhavenobotsxd.elf sh 12->16         started        18 mipsel.uhavenobotsxd.elf sh 12->18         started        20 mipsel.uhavenobotsxd.elf 12->20         started        23 3 other processes 12->23 signatures7 process8 signatures9 25 sh crontab 16->25         started        29 sh 16->29         started        31 sh cp 18->31         started        62 Sample tries to kill multiple processes (SIGKILL) 20->62 33 mipsel.uhavenobotsxd.elf sh 23->33         started        35 mipsel.uhavenobotsxd.elf sh 23->35         started        37 mipsel.uhavenobotsxd.elf sh 23->37         started        39 3 other processes 23->39 process10 file11 44 /var/spool/cron/crontabs/tmp.gRVQ3o, ASCII 25->44 dropped 68 Sample tries to persist itself using cron 25->68 70 Executes the "crontab" command typically for achieving persistence 25->70 41 sh crontab 29->41         started        46 /usr/bin/.sh, ELF 31->46 dropped 72 Drops invisible ELF files 31->72 74 Drops files in suspicious directories 31->74 signatures12 process13 signatures14 66 Executes the "crontab" command typically for achieving persistence 41->66
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/91a17b97dbb95ae1e5d1bdb363ae0156d67da47fcb025cdb72e6e618e90ef303
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/91a17b97dbb95ae1e5d1bdb363ae0156d67da47fcb025cdb72e6e618e90ef303/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-19 16:36:25 UTC
File Type:
ELF32 Little (Exe)
AV detection:
9 of 36 (25.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sgqxxf63xfnodzorxwzwhlqbk3lh3jd7zmbfzw3s43tbr2io6mbq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/251119-t4eawacv8c/
Behaviour
Reads runtime system information
System Network Configuration Discovery
Changes its process name
Modifies Bash startup script
Creates a large amount of network flows
Creates/modifies Cron job
Creates/modifies environment variables
Modifies init.d
Modifies rc script
Write file to user bin folder
Executes dropped EXE
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/f23260bb-bd80-439f-87a1-9011b13cfdff
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/91a17b97dbb95ae1e5d1bdb363ae0156d67da47fcb025cdb72e6e618e90ef303

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: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 91a17b97dbb95ae1e5d1bdb363ae0156d67da47fcb025cdb72e6e618e90ef303

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3686381/
  
Delivery method
Distributed via web download

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