MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8045ef43df0ccbd3cfde0fbcc7e51e11ed44a09098e0652ceed1bfebc4feffd. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8045ef43df0ccbd3cfde0fbcc7e51e11ed44a09098e0652ceed1bfebc4feffd
SHA3-384 hash: a765e8b3b77331da4acdaac3cc30c9d838d2e494a74a37af0f7f5967f5a0bdc2dfb5d7ac908d67826f0321417a436465
SHA1 hash: ff805da79f50c1af46159af8a67d9825c74baf9a
MD5 hash: 5ce8e737436c271f939b379a3d88046f
humanhash: oxygen-table-harry-coffee
File name:putita.mpsl
Download: download sample
Signature Mirai
Create hunting rule
File size:183'768 bytes
First seen:2026-07-19 13:09:43 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:FheGUbjmsykhXxKYSGxXh+cHxUVnotHI69r94U1DvU:/xUbjmsykhXgYSGxXEVnotHI69ySLU
TLSH T113042A49BE652BE7C05FCE70162D830721DE944EA2F6A73EE67CCD4C389A24859F3854
telfhash t14d31cdf08b3b55219a85cbec89edb75a491e8115470adf33fd2180bc50160ede225d4f
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 upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 dc5bf086551430f2bf8a5742be05c0789c4f32f275a14ebb30caebfd25813c32
File size (compressed) :81'728 bytes
File size (de-compressed) :183'768 bytes
Format:linux/mipsel
Packed file: dc5bf086551430f2bf8a5742be05c0789c4f32f275a14ebb30caebfd25813c32

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Dropper.Mirai-7135925-0
Create hunting rule

Unix.Trojan.Mirai-10058997-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sets a written file as executable
Sends data to a server
Creating a file
Receives data from a server
Runs as daemon
Creates or modifies symbolic links
Changes access rights for a written file
Changes the time when the file was created, accessed, or modified
Opens a port
Launching a process
Connection attempt
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Writes files to system directory
Creates or modifies files in /init.d to set up autorun
Creates or modifies files to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Deleting of the original file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
botnet dropper gcc masquerade mirai ngioweb
Link:
https://www.filescan.io/uploads/6a5cccd01f822a7412da8f6f/reports/8f5446f9-ede5-4de4-955d-16ad49666e59/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-07-19T10:18:00Z UTC
Last seen:
2026-07-21T06:39:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Linux.Agent.vn HEUR:Backdoor.Linux.Mirai.hv
Link:
https://opentip.kaspersky.com/b8045ef43df0ccbd3cfde0fbcc7e51e11ed44a09098e0652ceed1bfebc4feffd/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/55c7551d-8f60-4e78-97b2-29a7fb08c15e
Behavior Graph:
Download SVG
%3 guuid=e34ae90e-1800-0000-8264-fae8480b0000 pid=2888 /usr/bin/sudo guuid=25867f10-1800-0000-8264-fae84f0b0000 pid=2895 /tmp/sample.bin guuid=e34ae90e-1800-0000-8264-fae8480b0000 pid=2888->guuid=25867f10-1800-0000-8264-fae84f0b0000 pid=2895 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/3910a351-d3d5-4426-afba-49717e24850a
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1944776
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
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
Protects files from modification
Sample deletes itself
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: 1944776 Sample: putita.mpsl.elf Startdate: 19/07/2026 Architecture: LINUX Score: 100 53 64.89.163.215, 60648, 60650, 60652 NETIFACE-TORONTO-NetifaceAmericaIncUS Germany 2->53 55 109.202.202.202, 80 INIT7CH Switzerland 2->55 57 3 other IPs or domains 2->57 59 Antivirus detection for dropped file 2->59 61 Antivirus / Scanner detection for submitted sample 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 Contains symbols with names commonly found in malware 2->65 9 putita.mpsl.elf 2->9         started        13 dash rm 2->13         started        15 dash rm 2->15         started        signatures3 process4 file5 43 /usr/lib/kworker-helper, ELF 9->43 dropped 45 /root/.bashrc, ASCII 9->45 dropped 47 /etc/systemd/system/kworker-helper.service, ASCII 9->47 dropped 49 3 other malicious files 9->49 dropped 71 Sample tries to set files in /etc globally writable 9->71 73 Sample tries to persist itself using /etc/profile 9->73 75 Drops files in suspicious directories 9->75 77 3 other signatures 9->77 17 putita.mpsl.elf sh 9->17         started        19 putita.mpsl.elf sh 9->19         started        21 putita.mpsl.elf chattr 9->21         started        24 6 other processes 9->24 signatures6 process7 signatures8 26 sh crontab 17->26         started        30 sh 17->30         started        32 sh crontab 19->32         started        67 Protects files from modification 21->67 34 putita.mpsl.elf 24->34         started        36 putita.mpsl.elf 24->36         started        38 putita.mpsl.elf 24->38         started        process9 file10 51 /var/spool/cron/crontabs/tmp.FzfPs1, ASCII 26->51 dropped 79 Sample tries to persist itself using cron 26->79 81 Executes the "crontab" command typically for achieving persistence 26->81 40 sh crontab 30->40         started        signatures11 process12 signatures13 69 Executes the "crontab" command typically for achieving persistence 40->69
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b8045ef43df0ccbd3cfde0fbcc7e51e11ed44a09098e0652ceed1bfebc4feffd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8045ef43df0ccbd3cfde0fbcc7e51e11ed44a09098e0652ceed1bfebc4feffd/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-07-19 13:10:50 UTC
File Type:
ELF32 Little (SO)
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xacf55b56dgl2ph54d54y7sr4epnisqjbghamuwo5un75pcp576q._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion execution persistence privilege_escalation
Link:
https://tria.ge/reports/260719-qeq2laet3v/
Behaviour
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Modifies init.d
Modifies rc script
Modifies systemd
Deletes itself
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/b8045ef43df0ccbd3cfde0fbcc7e51e11ed44a09098e0652ceed1bfebc4feffd

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:elf_arm_mips_ko_so
Create hunting rule
Rule name:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
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 dc5bf086551430f2bf8a5742be05c0789c4f32f275a14ebb30caebfd25813c32

Mirai

elf b8045ef43df0ccbd3cfde0fbcc7e51e11ed44a09098e0652ceed1bfebc4feffd

(this sample)

  
Dropped by
SHA256 dc5bf086551430f2bf8a5742be05c0789c4f32f275a14ebb30caebfd25813c32
  
URLhaus
https://urlhaus.abuse.ch/url/3885284/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 c158dccabfd656b404043eca2b2f7e69

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