MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fcff5a3aa406899ab947d468969e4c2485c8bdc8ef71f4eac15f3e85d54c79c8. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fcff5a3aa406899ab947d468969e4c2485c8bdc8ef71f4eac15f3e85d54c79c8
SHA3-384 hash: b83bcf688e9ad2448e1a2e507e713c21984b5c943c698333ec14ac74846b94a381f4b0fe41f12b10a3c7b4eb25a006e5
SHA1 hash: 0617706af9b4f0396f19e66d90e3863aa74da37c
MD5 hash: 0d4a1a4035070c47944244d1947d85e6
humanhash: spring-carpet-red-august
File name:arm7.uhavenobotsxd
Download: download sample
Signature Mirai
Create hunting rule
File size:129'252 bytes
First seen:2026-01-03 08:30:07 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:EJhoO188Ir7DtaqgR/1XrfQOxBzX+zRzxZ73m:EJhoO14rftaqgR/1Xr4Ox0z1xt3m
TLSH T110C32956B9829F01D5C735FAFB9E414933136BB8D3FA7101DD206F61238A99B0F7A112
telfhash t117e02b57fe5504dc4bf14b2158e6310fe8ee34e50b24945974ac568fc1236c1743a00a
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
40
Origin country :
DE DE
Vendor Threat Intelligence
No detections
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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Opens a port
Changes the time when the file was created, accessed, or modified
Receives data from a server
Creating a file
Runs as daemon
Connection attempt
Changes access rights for a written file
Creating a process from a recently created file
Kills processes
Deleting a recently created file
Sends data to a server
Launching a process
Sets a written file as executable
Attempts to kill processes by name
Deletes a file
Writes files to system directory
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Creates or modifies files to set up autorun
Performs a bruteforce attack in the network
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
gcc mirai rust
Link:
https://www.filescan.io/uploads/6958d39c8d1aa9829e2995fb/reports/4dde23e5-a0f9-49dd-8324-587f230b850e/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-02T23:57:00Z UTC
Last seen:
2026-01-04T01:46:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Gafgyt.ij HEUR:Backdoor.Linux.Gafgyt.gu HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/fcff5a3aa406899ab947d468969e4c2485c8bdc8ef71f4eac15f3e85d54c79c8/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/f5f40dea-d250-4db0-8696-953845d2365b
Behavior Graph:
Download SVG
%3 guuid=22ad0fce-1700-0000-5757-1620fa0a0000 pid=2810 /usr/bin/sudo guuid=dfd0aad0-1700-0000-5757-1620000b0000 pid=2816 /tmp/sample.bin guuid=22ad0fce-1700-0000-5757-1620fa0a0000 pid=2810->guuid=dfd0aad0-1700-0000-5757-1620000b0000 pid=2816 execve
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cf39f433-37f4-42a4-8977-9647fb3a9ef8
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1843990
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
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill a massive number of system processes
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
Terminates several processes with shell command 'killall'
Writes identical ELF files to multiple locations
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1843990 Sample: arm7.uhavenobotsxd.elf Startdate: 03/01/2026 Architecture: LINUX Score: 100 96 203.220.117.170, 3106 TPG-INTERNET-APTPGTelecomLimitedAU Australia 2->96 98 94.154.35.153, 59738, 6969 SELECTELRU Ukraine 2->98 100 14 other IPs or domains 2->100 102 Multi AV Scanner detection for submitted file 2->102 11 arm7.uhavenobotsxd.elf 2->11         started        14 dash rm 2->14         started        16 dash rm 2->16         started        signatures3 process4 signatures5 128 Sample tries to kill multiple processes (SIGKILL) 11->128 130 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->130 18 arm7.uhavenobotsxd.elf 11->18         started        process6 file7 72 /var/spool/cron/root, ASCII 18->72 dropped 74 /var/spool/cron/crontabs/root, ASCII 18->74 dropped 76 /root/.bashrc, ASCII 18->76 dropped 78 7 other files (6 malicious) 18->78 dropped 104 Sample tries to set files in /etc globally writable 18->104 106 Sample tries to persist itself using /etc/profile 18->106 108 Drops files in suspicious directories 18->108 110 4 other signatures 18->110 22 arm7.uhavenobotsxd.elf sh 18->22         started        24 arm7.uhavenobotsxd.elf sh 18->24         started        26 arm7.uhavenobotsxd.elf sh 18->26         started        28 67 other processes 18->28 signatures8 process9 signatures10 31 sh .monitor 22->31         started        33 sh S99network 24->33         started        35 sh cp 26->35         started        132 Sample tries to kill a massive number of system processes 28->132 134 Sample tries to kill multiple processes (SIGKILL) 28->134 39 sh crontab 28->39         started        41 sh cp 28->41         started        43 sh cp 28->43         started        45 62 other processes 28->45 process11 file12 47 .monitor 31->47         started        49 S99network 33->49         started        80 /usr/bin/.update, ELF 35->80 dropped 114 Writes identical ELF files to multiple locations 35->114 116 Drops invisible ELF files 35->116 118 Drops files in suspicious directories 35->118 82 /var/spool/cron/crontabs/tmp.AJ2NYq, ASCII 39->82 dropped 120 Sample tries to persist itself using cron 39->120 122 Executes the "crontab" command typically for achieving persistence 39->122 84 /var/jbx/shared/.update, ELF 41->84 dropped 86 /var/log/.update, ELF 43->86 dropped 88 /var/.update, ELF 45->88 dropped 90 /root/.update, ELF 45->90 dropped 92 /mnt/.update, ELF 45->92 dropped 94 3 other malicious files 45->94 dropped 124 Sample deletes itself 45->124 126 Terminates several processes with shell command 'killall' 45->126 51 sh crontab 45->51         started        54 sh arm7.uhavenobotsxd.elf 45->54         started        signatures13 process14 signatures15 56 .monitor arm7.uhavenobotsxd.elf 47->56         started        58 .monitor arm7.uhavenobotsxd.elf 47->58         started        60 .monitor arm7.uhavenobotsxd.elf 47->60         started        68 133 other processes 47->68 62 S99network arm7.uhavenobotsxd.elf 49->62         started        64 S99network arm7.uhavenobotsxd.elf 49->64         started        66 S99network arm7.uhavenobotsxd.elf 49->66         started        70 73 other processes 49->70 112 Executes the "crontab" command typically for achieving persistence 51->112 process16
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/fcff5a3aa406899ab947d468969e4c2485c8bdc8ef71f4eac15f3e85d54c79c8
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fcff5a3aa406899ab947d468969e4c2485c8bdc8ef71f4eac15f3e85d54c79c8/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/fcff5a3aa406899ab947d468969e4c2485c8bdc8ef71f4eac15f3e85d54c79c8
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-03 04:45:08 UTC
File Type:
ELF32 Little (Exe)
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7t7vuovea2ezvokh2rujnhsmesc4rpoi55y7j2wbl47ilvkmphea._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/260103-kemraafr8x/
Behaviour
Command and Scripting Interpreter: Unix Shell
Reads runtime system information
Writes file to shm directory
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Deletes log files
Enumerates running processes
Modifies init.d
Modifies rc script
Write file to user bin folder
Executes dropped EXE
Unexpected DNS network traffic destination
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/d1bf47f2-f295-45d7-8b00-f68de06ccaf8
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/fcff5a3aa406899ab947d468969e4c2485c8bdc8ef71f4eac15f3e85d54c79c8

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:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:Linux_Generic_Threat_8299c877
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 fcff5a3aa406899ab947d468969e4c2485c8bdc8ef71f4eac15f3e85d54c79c8

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3686384/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3749659/

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