MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cfb06c37c8ae8ff22d2a5229e3793802bb4f47a01b60d080ef90d3734ee14624. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cfb06c37c8ae8ff22d2a5229e3793802bb4f47a01b60d080ef90d3734ee14624
SHA3-384 hash: 3d3fe6589a2d00fbb70566e0545388b5650f23f0a2394db6a829766668463bf9a0c8157af6bf77eeb7aaf03feb6c51e5
SHA1 hash: 23f6db837e96f75a4294527cfe8dd587553851fa
MD5 hash: b11ed2c71337829f07242a8a9687f110
humanhash: enemy-tennis-east-batman
File name:putita.mips
Download: download sample
Signature Mirai
Create hunting rule
File size:283'180 bytes
First seen:2026-08-23 20:53:25 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 6144:h21N8EmSXUTn0bRH+0B9fZTj2zSEQ/kl5/JfN:h21N59TPT9EPJfN
TLSH T1C754591B7B10CF65E329C53149B38E5667F5265227E2C549F22CDE08BE60389682FFE4
telfhash t1474133a04e3bda0adb98caec85fcab6e780f50165209cf33ee30416d40510f9e25ad5f
Magika elf
Reporter abuse_ch
Tags:elf mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 e1cdf3e206e6ae2a62903785ae14a81aae050a1bead2e3ada8e830f8ed862fba
File size (compressed) :138'200 bytes
File size (de-compressed) :283'180 bytes
Format:linux/mips
Packed file: e1cdf3e206e6ae2a62903785ae14a81aae050a1bead2e3ada8e830f8ed862fba

Intelligence

File Origin
# of uploads :
1
# of downloads :
50
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
Opens a port
Sets a written file as executable
Launching a process
Connection attempt
Runs as daemon
Changes the time when the file was created, accessed, or modified
Changes access rights for a written file
Creating a file
Creates or modifies symbolic links
Substitutes an application name
Writes files to system directory
Creates or modifies files in /cron to set up autorun
Creates or modifies files to set up autorun
Deleting of the original file
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc masquerade
Link:
https://www.filescan.io/uploads/6a8b5df66e58c2f4df0d7ce4/reports/53d37fc7-a572-4bc9-aff5-ae378aeaf21a/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-08-23T18:38:00Z UTC
Last seen:
2026-08-25T01:49:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/cfb06c37c8ae8ff22d2a5229e3793802bb4f47a01b60d080ef90d3734ee14624/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/ca4cd0dc-354e-4c7d-8323-638fa517197c
Behavior Graph:
Download SVG
%3 guuid=be57c6d1-1d00-0000-7aaa-536e4f0b0000 pid=2895 /usr/bin/sudo guuid=350228d4-1d00-0000-7aaa-536e550b0000 pid=2901 /tmp/sample.bin guuid=be57c6d1-1d00-0000-7aaa-536e4f0b0000 pid=2895->guuid=350228d4-1d00-0000-7aaa-536e550b0000 pid=2901 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/4fbcfa96-7619-462c-9111-781b9b39b7a9
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1962435
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
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1962435 Sample: putita.mips.elf Startdate: 23/08/2026 Architecture: LINUX Score: 100 49 64.89.163.215, 36078, 36080, 36082 NETIFACE-TORONTO-NetifaceAmericaIncUS Germany 2->49 53 Antivirus detection for dropped file 2->53 55 Antivirus / Scanner detection for submitted sample 2->55 57 Multi AV Scanner detection for submitted file 2->57 59 2 other signatures 2->59 9 putita.mips.elf 2->9         started        signatures3 process4 file5 41 /usr/lib/kworker-helper, ELF 9->41 dropped 43 /root/.bashrc, ASCII 9->43 dropped 45 /etc/systemd/system/kworker-helper.service, ASCII 9->45 dropped 47 3 other malicious files 9->47 dropped 67 Sample tries to set files in /etc globally writable 9->67 69 Sample tries to persist itself using /etc/profile 9->69 71 Drops files in suspicious directories 9->71 73 3 other signatures 9->73 13 putita.mips.elf sh 9->13         started        15 putita.mips.elf sh 9->15         started        17 putita.mips.elf chattr 9->17         started        20 6 other processes 9->20 signatures6 process7 signatures8 22 sh crontab 13->22         started        26 sh 13->26         started        28 sh crontab 15->28         started        51 Protects files from modification 17->51 30 putita.mips.elf 20->30         started        32 putita.mips.elf 20->32         started        34 putita.mips.elf 20->34         started        process9 file10 39 /var/spool/cron/crontabs/tmp.GRAVBw, ASCII 22->39 dropped 63 Sample tries to persist itself using cron 22->63 65 Executes the "crontab" command typically for achieving persistence 22->65 36 sh crontab 26->36         started        signatures11 process12 signatures13 61 Executes the "crontab" command typically for achieving persistence 36->61
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/cfb06c37c8ae8ff22d2a5229e3793802bb4f47a01b60d080ef90d3734ee14624
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cfb06c37c8ae8ff22d2a5229e3793802bb4f47a01b60d080ef90d3734ee14624/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-23 20:54:26 UTC
File Type:
ELF32 Big (SO)
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z6ygyn6iv2h7eljkkiu6g6jyak5u6r5adnqnbahpsdjxgtxbiysa._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/260823-zpyzmazgmb/
Behaviour
Reads runtime system information
System Network Configuration Discovery
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/cfb06c37c8ae8ff22d2a5229e3793802bb4f47a01b60d080ef90d3734ee14624

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
Rule name:woof_mirai_variant
Create hunting rule
Author:Nokia Deepfield ERT
Description:Detects Woof Mirai variant (ChaCha20 table, HTTP C2 with token/guid, .woof dropper)
Reference:Internal analysis of sample 6ef4ce02

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf e1cdf3e206e6ae2a62903785ae14a81aae050a1bead2e3ada8e830f8ed862fba

Mirai

elf cfb06c37c8ae8ff22d2a5229e3793802bb4f47a01b60d080ef90d3734ee14624

(this sample)

  
Dropped by
SHA256 e1cdf3e206e6ae2a62903785ae14a81aae050a1bead2e3ada8e830f8ed862fba
  
URLhaus
https://urlhaus.abuse.ch/url/3885290/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3892123/
  
Dropped by
MD5 424f113f66aca6469f2876a4f59d5430
  
URLhaus
https://urlhaus.abuse.ch/url/3892137/

Comments