MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cafc4cc063bd3f7176a19281ec1cc7b15fc68cc4dfe480a38e967e2f97f83738. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cafc4cc063bd3f7176a19281ec1cc7b15fc68cc4dfe480a38e967e2f97f83738
SHA3-384 hash: 06f1d84501faf230a992c565a0fb891dd72bd4be160c92c3ec41c93ef12b900d1a52f52bd75521d60e53b9c96a1c1add
SHA1 hash: a7743c398397b66b9d3f98363c2caf0c029a5e05
MD5 hash: 992076424cc468ec091f7178921052cf
humanhash: colorado-fanta-sixteen-cold
File name:putita.x86_64
Download: download sample
Signature Mirai
Create hunting rule
File size:90'768 bytes
First seen:2026-08-23 03:25:52 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 1536:XH08ZkHQjsgOj7b3yH3XwPHZKggWpjOlUSFwjk3lnMFH9j7sDWLYSqC7kXoXyoAs:XjZkwjNQi4KPWpWG0qFHF7swnAs
TLSH T1929302FB8557E5F9C33993313E61E1E365068F28A1032BDB00A4DF7E089A9815754EDB
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
File size (compressed) :90'768 bytes
File size (de-compressed) :190'592 bytes
Format:linux/amd64
Unpacked file: f6763395e424bbb23810b31669636539ab5f102533e2ce843c5470ebbb18b13b

Intelligence

File Origin
# of uploads :
1
# of downloads :
57
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/c82aa0ba-fbac-4be4-88bb-999ad6e88d8d/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sets a written file as executable
Creating a file
Runs as daemon
Changes access rights for a written file
Creates or modifies symbolic links
Changes the time when the file was created, accessed, or modified
Opens a port
Launching a process
Connection attempt
Creates or modifies files in /cron to set up autorun
Substitutes an application name
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:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a8a68522286587657386b51/reports/6cec2ba3-1ade-47b2-b955-763495ec44f8/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
UPX
Botnet:
unknown
Number of open files:
13
Number of processes launched:
6
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/cafc4cc063bd3f7176a19281ec1cc7b15fc68cc4dfe480a38e967e2f97f83738
Behaviour
Persistence
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/631ab5c4-ce4d-41da-8856-6e99d1fbe6d1
Behavior Graph:
Download SVG
%3 guuid=4510a30f-1a00-0000-a33f-2a6f5b0c0000 pid=3163 /usr/bin/sudo guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172 /tmp/sample.bin delete-file mprotect-exec net write-config write-file guuid=4510a30f-1a00-0000-a33f-2a6f5b0c0000 pid=3163->guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=a24d1414-1a00-0000-a33f-2a6f690c0000 pid=3177 /usr/bin/dash guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=a24d1414-1a00-0000-a33f-2a6f690c0000 pid=3177 execve guuid=8d938a14-1a00-0000-a33f-2a6f6a0c0000 pid=3178 /usr/bin/dash guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=8d938a14-1a00-0000-a33f-2a6f6a0c0000 pid=3178 execve guuid=04466115-1a00-0000-a33f-2a6f6d0c0000 pid=3181 /usr/bin/chattr zombie guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=04466115-1a00-0000-a33f-2a6f6d0c0000 pid=3181 execve guuid=25ae6315-1a00-0000-a33f-2a6f6e0c0000 pid=3182 /usr/bin/chattr zombie guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=25ae6315-1a00-0000-a33f-2a6f6e0c0000 pid=3182 execve guuid=43966815-1a00-0000-a33f-2a6f6f0c0000 pid=3183 /usr/bin/chattr zombie guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=43966815-1a00-0000-a33f-2a6f6f0c0000 pid=3183 execve guuid=7ef56b15-1a00-0000-a33f-2a6f700c0000 pid=3184 /usr/bin/busybox zombie guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=7ef56b15-1a00-0000-a33f-2a6f700c0000 pid=3184 execve guuid=7e0f7015-1a00-0000-a33f-2a6f710c0000 pid=3185 /usr/bin/busybox zombie guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=7e0f7015-1a00-0000-a33f-2a6f710c0000 pid=3185 execve guuid=0acc7215-1a00-0000-a33f-2a6f720c0000 pid=3186 /usr/bin/busybox zombie guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=0acc7215-1a00-0000-a33f-2a6f720c0000 pid=3186 execve guuid=7cae7515-1a00-0000-a33f-2a6f730c0000 pid=3187 /tmp/sample.bin net send-data zombie guuid=87a22712-1a00-0000-a33f-2a6f640c0000 pid=3172->guuid=7cae7515-1a00-0000-a33f-2a6f730c0000 pid=3187 clone guuid=649eba14-1a00-0000-a33f-2a6f6b0c0000 pid=3179 /usr/bin/dash guuid=8d938a14-1a00-0000-a33f-2a6f6a0c0000 pid=3178->guuid=649eba14-1a00-0000-a33f-2a6f6b0c0000 pid=3179 clone guuid=d736cb14-1a00-0000-a33f-2a6f6c0c0000 pid=3180 /usr/bin/dash guuid=8d938a14-1a00-0000-a33f-2a6f6a0c0000 pid=3178->guuid=d736cb14-1a00-0000-a33f-2a6f6c0c0000 pid=3180 clone guuid=7cae7515-1a00-0000-a33f-2a6f730c0000 pid=3187->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con 706d8119-5804-563f-93fb-1ad04086f3d8 64.89.163.215:666 guuid=7cae7515-1a00-0000-a33f-2a6f730c0000 pid=3187->706d8119-5804-563f-93fb-1ad04086f3d8 send: 90B guuid=7f5a7516-1a00-0000-a33f-2a6f760c0000 pid=3190 /tmp/sample.bin guuid=7cae7515-1a00-0000-a33f-2a6f730c0000 pid=3187->guuid=7f5a7516-1a00-0000-a33f-2a6f760c0000 pid=3190 clone guuid=3a297816-1a00-0000-a33f-2a6f770c0000 pid=3191 /tmp/sample.bin guuid=7cae7515-1a00-0000-a33f-2a6f730c0000 pid=3187->guuid=3a297816-1a00-0000-a33f-2a6f770c0000 pid=3191 clone guuid=eaf07a16-1a00-0000-a33f-2a6f780c0000 pid=3192 /tmp/sample.bin guuid=7cae7515-1a00-0000-a33f-2a6f730c0000 pid=3187->guuid=eaf07a16-1a00-0000-a33f-2a6f780c0000 pid=3192 clone
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/a1b9ec2f-6aed-4ae7-a3d8-a4fe73a82457
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1962335
Signature
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 is packed with UPX
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: 1962335 Sample: putita.x86_64.elf Startdate: 23/08/2026 Architecture: LINUX Score: 88 49 64.89.163.215, 666 NETIFACE-TORONTO-NetifaceAmericaIncUS Germany 2->49 53 Multi AV Scanner detection for submitted file 2->53 55 Sample is packed with UPX 2->55 9 putita.x86_64.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 63 Sample tries to set files in /etc globally writable 9->63 65 Sample tries to persist itself using /etc/profile 9->65 67 Drops files in suspicious directories 9->67 69 3 other signatures 9->69 13 putita.x86_64.elf sh 9->13         started        15 putita.x86_64.elf sh 9->15         started        17 putita.x86_64.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.x86_64.elf 20->30         started        32 putita.x86_64.elf 20->32         started        34 putita.x86_64.elf 20->34         started        process9 file10 39 /var/spool/cron/crontabs/tmp.aoBZxr, ASCII 22->39 dropped 59 Sample tries to persist itself using cron 22->59 61 Executes the "crontab" command typically for achieving persistence 22->61 36 sh crontab 26->36         started        signatures11 process12 signatures13 57 Executes the "crontab" command typically for achieving persistence 36->57
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/cafc4cc063bd3f7176a19281ec1cc7b15fc68cc4dfe480a38e967e2f97f83738
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cafc4cc063bd3f7176a19281ec1cc7b15fc68cc4dfe480a38e967e2f97f83738/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Suspicious
First seen:
2026-08-23 03:26:16 UTC
File Type:
ELF64 Little (SO)
AV detection:
9 of 24 (37.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zl6ezqddxu7xc5vbska6yhghwfp4ndge37sibi4osz7c7f7yg44a._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution linux persistence privilege_escalation upx
Link:
https://tria.ge/reports/260823-dy9ltssdlf/
Behaviour
Reads runtime system information
Changes its process name
Modifies Bash startup script
UPX packed file
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/cafc4cc063bd3f7176a19281ec1cc7b15fc68cc4dfe480a38e967e2f97f83738

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:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

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

Web download

Mirai

elf cafc4cc063bd3f7176a19281ec1cc7b15fc68cc4dfe480a38e967e2f97f83738

(this sample)

Mirai

elf f6763395e424bbb23810b31669636539ab5f102533e2ce843c5470ebbb18b13b

  
URLhaus
https://urlhaus.abuse.ch/url/3892125/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 f6763395e424bbb23810b31669636539ab5f102533e2ce843c5470ebbb18b13b
  
Dropping
MD5 e146b175eff0c9ec3811aca54d684fd0
  
URLhaus
https://urlhaus.abuse.ch/url/3892133/
  
URLhaus
https://urlhaus.abuse.ch/url/3885289/

Comments