MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a45db935f5b32831712572e4d38076e787ae7f9d58a6c4afc502b201b806acce. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a45db935f5b32831712572e4d38076e787ae7f9d58a6c4afc502b201b806acce
SHA3-384 hash: 5ccf7fc68814fe0780c6519eab0a92f8c8a139cb5d75ebef03ed718e9aff4ada48e7cd719ba6301ae21b6bb14691ba6a
SHA1 hash: bda1dc3215a55b4305f494400de70713912ad718
MD5 hash: 56c6759bd13ef90224f335ab6b57408b
humanhash: colorado-ack-hot-oscar
File name:hold.arm5
Download: download sample
Signature Mirai
Create hunting rule
File size:80'592 bytes
First seen:2025-01-27 12:21:53 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:/evlXQuEtewWA5Z3BchLT78JOEDAGMUlplWKEEK6xlbe:/e2p5hm1T78JAUl+KRKee
TLSH T1D6732946B9815A13C6D0137BF6AE428D373923E8E2DE7207DE216F21339686F0D67E51
telfhash t1921110661a9506ec27e4d99cc1ce9237566e78783f001549aeafff1f43ef5c0b024426
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 :
89
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29325.LC.Pl.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-81.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7135906-0
Create hunting rule

Unix.Dropper.Mirai-7135966-0
Create hunting rule

Unix.Dropper.Mirai-7135979-0
Create hunting rule

Unix.Trojan.Mirai-9935718-0
Create hunting rule

Unix.Trojan.Mirai-9945193-0
Create hunting rule

Unix.Trojan.Mirai-9946826-0
Create hunting rule

Unix.Dropper.Mirai-10008433-0
Create hunting rule

Unix.Trojan.Mirai-10028946-0
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67977b38752ec6ca6801304clinux22vpnfull_triage
Tags:
malware
Result
Verdict:
Malware
Maliciousness:
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
evasive lolbin masquerade remote
Link:
https://www.filescan.io/uploads/67977a6c0a04287e8b02f220/reports/6787a08f-7e84-4a32-b9e3-a33b013a05a2/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
101
Number of processes launched:
7
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/a45db935f5b32831712572e4d38076e787ae7f9d58a6c4afc502b201b806acce
Behaviour
Persistence
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Verdict:
MALICIOUS
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/18049eb2-e8d5-4d0f-9b37-245662bf19e1
Result
Threat name:
Mirai, Okiru
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1600346
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains symbols with names commonly found in malware
Drops files in suspicious directories
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample tries to kill multiple processes (SIGKILL)
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Yara detected Mirai
Yara detected Okiru
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1600346 Sample: hold.arm5.elf Startdate: 27/01/2025 Architecture: LINUX Score: 100 157 holdabchoneypots.p-e.kr 193.143.1.66, 36448, 36454, 36458 BITWEB-ASRU unknown 2->157 159 daisy.ubuntu.com 2->159 161 Malicious sample detected (through community Yara rule) 2->161 163 Antivirus detection for dropped file 2->163 165 Antivirus / Scanner detection for submitted sample 2->165 167 5 other signatures 2->167 13 systemd bash 2->13         started        15 hold.arm5.elf 2->15         started        18 systemd snapd-env-generator 2->18         started        20 8 other processes 2->20 signatures3 process4 signatures5 22 bash sh 13->22         started        24 bash wget 13->24         started        189 Sample tries to persist itself using /etc/profile 15->189 191 Drops files in suspicious directories 15->191 193 Sample deletes itself 15->193 195 Sample tries to persist itself using System V runlevels 15->195 26 hold.arm5.elf sh 15->26         started        28 hold.arm5.elf sh 15->28         started        30 hold.arm5.elf 15->30         started        33 3 other processes 15->33 process6 signatures7 35 sh hold.sh4 22->35         started        39 sh hold.arm5 22->39         started        41 sh hold.arm7 22->41         started        49 45 other processes 22->49 43 sh chmod 26->43         started        45 sh chmod 28->45         started        187 Sample tries to kill multiple processes (SIGKILL) 30->187 47 hold.arm5.elf 30->47         started        51 2 other processes 30->51 53 3 other processes 33->53 process8 file9 141 /etc/systemd/system/holdservice.service, ASCII 35->141 dropped 143 /etc/rc.local, ASCII 35->143 dropped 145 /etc/profile, ASCII 35->145 dropped 147 /etc/init.d/holdservice, Bourne-Again 35->147 dropped 171 Sample tries to persist itself using /etc/profile 35->171 173 Drops files in suspicious directories 35->173 175 Sample deletes itself 35->175 65 6 other processes 35->65 177 Sample tries to persist itself using System V runlevels 39->177 55 hold.arm5 sh 39->55         started        57 hold.arm5 sh 39->57         started        67 4 other processes 39->67 59 hold.arm7 sh 41->59         started        61 hold.arm7 sh 41->61         started        70 4 other processes 41->70 179 Sample tries to set files in /etc globally writable 43->179 181 Sample tries to kill multiple processes (SIGKILL) 47->181 149 /tmp/hold.x86_64, ELF 49->149 dropped 151 /tmp/hold.x86, ELF 49->151 dropped 153 /tmp/hold.spc, ELF 49->153 dropped 155 8 other malicious files 49->155 dropped 63 hold.mips sh 49->63         started        72 29 other processes 49->72 signatures10 process11 signatures12 74 sh chmod 55->74         started        77 sh chmod 57->77         started        79 sh chmod 59->79         started        81 sh chmod 61->81         started        83 sh chmod 63->83         started        85 8 other processes 65->85 87 6 other processes 67->87 89 6 other processes 70->89 169 Sample tries to kill multiple processes (SIGKILL) 72->169 91 39 other processes 72->91 process13 signatures14 183 Sample tries to set files in /etc globally writable 74->183 93 systemctl systemd-sysv-install 85->93         started        95 systemctl systemd-sysv-install 87->95         started        97 systemctl systemd-sysv-install 89->97         started        185 Sample tries to kill multiple processes (SIGKILL) 91->185 99 systemctl systemd-sysv-install 91->99         started        101 systemctl systemd-sysv-install 91->101         started        103 systemctl systemd-sysv-install 91->103         started        105 2 other processes 91->105 process15 process16 111 3 other processes 93->111 107 systemd-sysv-install update-rc.d 95->107         started        113 2 other processes 95->113 109 systemd-sysv-install update-rc.d 97->109         started        115 2 other processes 97->115 117 3 other processes 99->117 119 3 other processes 101->119 121 3 other processes 103->121 123 6 other processes 105->123 process17 125 update-rc.d systemctl 107->125         started        127 update-rc.d systemctl 109->127         started        129 update-rc.d systemctl 111->129         started        131 update-rc.d systemctl 117->131         started        133 update-rc.d systemctl 119->133         started        135 update-rc.d systemctl 121->135         started        137 update-rc.d systemctl 123->137         started        139 update-rc.d systemctl 123->139         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a45db935f5b32831712572e4d38076e787ae7f9d58a6c4afc502b201b806acce
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a45db935f5b32831712572e4d38076e787ae7f9d58a6c4afc502b201b806acce/
Threat name:
Linux.Trojan.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-01-27 12:22:06 UTC
File Type:
ELF32 Little (Exe)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uro3snpvwmudc4jfolsnhadw46d24745lctmjl6fakzadoagvtha._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:unstable
Link:
https://tria.ge/reports/250127-pjwl7sxrfv/
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Dropper.Mirai-7135906-0
YARA:
Linux_Trojan_Gafgyt_28a2fe0c Linux_Gafgyt_May_2024
Link:
https://app.threat.zone/submission/6705e6cd-7a49-4755-b8d0-e537ef1935a8
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_3bcc1630
Create hunting rule
Author:Elastic Security
Rule name:Linux_Generic_Threat_d94e1020
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_28a2fe0c
Create hunting rule
Author:Elastic Security
Rule name:SUSP_XORed_Mozilla_Oct19
Create hunting rule
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
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
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 a45db935f5b32831712572e4d38076e787ae7f9d58a6c4afc502b201b806acce

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3405911/
  
Delivery method
Distributed via web download

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