MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1c46b788cd21053d730f5ea5c186d6e4f23aa62baf307003f0cd739914e4cb07. 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 7 File information Comments

SHA256 hash: 1c46b788cd21053d730f5ea5c186d6e4f23aa62baf307003f0cd739914e4cb07
SHA3-384 hash: 6ba574496f68bd387d4c1cd1d94d9d9de5dccc8db54343a0e8548fb98e2f0f11dd35590510e6223bf24f8ccec81c8c5c
SHA1 hash: cdc58cdab08c05e592f0dcc231db7e54aa141753
MD5 hash: 6b070f94b644316ea982ea71b8f22486
humanhash: pluto-west-oven-venus
File name:firmware.armv7l
Download: download sample
Signature Mirai
File size:136'420 bytes
First seen:2024-09-01 15:29:09 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:I60j1PPFurocpgwS2GWddcaz9nkBZla1KfBZcqVgqWImte:Ihj1X4TGWbcaz9nkBZ04fDV9W9te
TLSH T1B6D31B46A942DF11D5C722BAFB9E418C33136BB8D3EA3102DD245F6133CA99B0EB7552
telfhash t114216266ee580e8c17d54e4d91ef652eadfe30ea670024114f1c5b4f45a38c3702983b
Magika elf
Reporter NDA0E
Tags:elf firmware mirai

Intelligence


File Origin
# of uploads :
1
# of downloads :
117
Origin country :
NL NL
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Deleting a recently created file
DNS request
Connection attempt
Receives data from a server
Creating a file
Kills processes
Runs as daemon
Changes the time when the file was created, accessed, or modified
Creating a file in the %temp% directory
Sets a written file as executable
Launching a process
Changes access rights for a written file
Substitutes an application name
Writes files to system directory
Creates or modifies files in /cron to set up autorun
Performs a bruteforce attack in the network
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-debug botnet gcc lolbin mirai remote
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Verdict:
MALICIOUS
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops files in suspicious directories
Executes the "crontab" command typically for achieving persistence
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample tries to persist itself using cron
Tries to resolve many domain names, but no domain seems valid
Uses known network protocols on non-standard ports
Writes identical ELF files to multiple locations
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1502464 Sample: firmware.armv7l.elf Startdate: 01/09/2024 Architecture: LINUX Score: 96 91 kckc.ru 2->91 93 kafl.ru 2->93 95 349 other IPs or domains 2->95 111 Malicious sample detected (through community Yara rule) 2->111 113 Antivirus detection for dropped file 2->113 115 Antivirus / Scanner detection for submitted sample 2->115 117 3 other signatures 2->117 11 firmware.armv7l.elf 2->11         started        signatures3 process4 process5 13 firmware.armv7l.elf 11->13         started        file6 87 /usr/bin/urztrmjq, ELF 13->87 dropped 119 Writes identical ELF files to multiple locations 13->119 121 Drops files in suspicious directories 13->121 123 Sample tries to persist itself using cron 13->123 17 firmware.armv7l.elf 13->17         started        21 firmware.armv7l.elf sh 13->21         started        23 firmware.armv7l.elf 13->23         started        25 4 other processes 13->25 signatures7 process8 file9 81 /var/spool/cron/crontabs/root, ASCII 17->81 dropped 83 /usr/bin/ioxuhzzigj, ELF 17->83 dropped 101 Writes identical ELF files to multiple locations 17->101 103 Drops files in suspicious directories 17->103 105 Sample tries to persist itself using cron 17->105 27 firmware.armv7l.elf sh 17->27         started        29 firmware.armv7l.elf 17->29         started        31 firmware.armv7l.elf 17->31         started        43 3 other processes 17->43 33 sh crontab 21->33         started        37 firmware.armv7l.elf sh 23->37         started        39 firmware.armv7l.elf sh 23->39         started        45 10 other processes 23->45 41 firmware.armv7l.elf sh 25->41         started        signatures10 process11 file12 47 sh crontab 27->47         started        51 firmware.armv7l.elf sh 29->51         started        53 firmware.armv7l.elf sh 29->53         started        63 10 other processes 29->63 55 firmware.armv7l.elf sh 31->55         started        85 /var/spool/cron/crontabs/tmp.tzvsJf, ASCII 33->85 dropped 107 Sample tries to persist itself using cron 33->107 109 Executes the "crontab" command typically for achieving persistence 33->109 57 sh hostname 37->57         started        59 sh hostname 39->59         started        61 sh hostname 41->61         started        65 10 other processes 45->65 signatures13 process14 file15 89 /var/spool/cron/crontabs/tmp.V6c7fF, ASCII 47->89 dropped 97 Sample tries to persist itself using cron 47->97 99 Executes the "crontab" command typically for achieving persistence 47->99 67 sh hostname 51->67         started        69 sh hostname 53->69         started        71 sh hostname 55->71         started        73 sh hostname 63->73         started        75 sh hostname 63->75         started        77 sh hostname 63->77         started        79 7 other processes 63->79 signatures16 process17
Threat name:
Linux.Backdoor.Mirai
Status:
Malicious
First seen:
2024-09-01 03:26:02 UTC
File Type:
ELF32 Little (Exe)
AV detection:
20 of 37 (54.05%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:mirai botnet discovery persistence
Behaviour
Reads runtime system information
Writes file to tmp directory
Changes its process name
Creates/modifies Cron job
Writes file to system bin folder
Unexpected DNS network traffic destination
Contacts a large (47263) amount of remote hosts
Creates a large amount of network flows
Mirai
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:Linux_Generic_Threat_8299c877
Author:Elastic Security
Rule name:Mirai_Botnet_Malware
Author:Florian Roth (Nextron Systems)
Description:Detects Mirai Botnet Malware
Reference:Internal Research
Rule name:Mirai_Botnet_Malware_RID2EF6
Author:Florian Roth
Description:Detects Mirai Botnet Malware
Reference:Internal Research
Rule name:setsockopt
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SUSP_XORed_Mozilla
Author:Florian Roth
Description:Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()
Rule name:SUSP_XORed_Mozilla_RID2DB4
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
Rule name:unixredflags3
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 1c46b788cd21053d730f5ea5c186d6e4f23aa62baf307003f0cd739914e4cb07

(this sample)

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