MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf139ddd0632d4cc76d99de0157ad7b490c349a1a6a0d537f2b0dc14b4ec3125. 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: 7


Intelligence 7 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cf139ddd0632d4cc76d99de0157ad7b490c349a1a6a0d537f2b0dc14b4ec3125
SHA3-384 hash: 4f3dd5fbe676be722f223cd898960519471218e8e1d2e9bcb7c22e6062163384c0358063c3a731685d6a048f65fdb122
SHA1 hash: 4d0c9dd36195128d3ca14c3650132fab8abd5978
MD5 hash: 05bad4503f73a8a1835a7664ce585f45
humanhash: pizza-thirteen-hotel-single
File name:putita.arm5
Download: download sample
Signature Mirai
Create hunting rule
File size:56'940 bytes
First seen:2026-08-18 20:09:04 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 1536:/ksBdUhKL6gg/PbdxY3HmA1yskx6mEviUfO:dB6KLG/vqmA1ZkcJG
TLSH T1FD430185E5401C66D7E648B8FE1B900341F26EF8F5A7379394A085FE2CF285E3B61917
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 UPX
File size (compressed) :56'940 bytes
File size (de-compressed) :124'368 bytes
Format:linux/arm
Unpacked file: 35ce2bea70b425f52942c835be2366b315cb5e424b2187c09714dfab6bd89adb

Intelligence

File Origin
# of uploads :
1
# of downloads :
52
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/39aa494f-d3bd-4908-a928-d26ba958d615/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Opens a port
Sets a written file as executable
Changes the time when the file was created, accessed, or modified
Launching a process
Connection attempt
Runs as daemon
Receives data from a server
Sends data to a server
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
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/9d53edd2-0850-4778-802e-e7c9bfcf2dc5
Behavior Graph:
Download SVG
%3 guuid=983c80eb-1900-0000-fcd7-8259d0080000 pid=2256 /usr/bin/sudo guuid=c91d4ff1-1900-0000-fcd7-8259d9080000 pid=2265 /tmp/sample.bin guuid=983c80eb-1900-0000-fcd7-8259d0080000 pid=2256->guuid=c91d4ff1-1900-0000-fcd7-8259d9080000 pid=2265 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d924b7fa-f7bf-42f1-8407-85065db89e90
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1959939
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
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: 1959939 Sample: putita.arm5.elf Startdate: 18/08/2026 Architecture: LINUX Score: 80 49 64.89.163.215, 666 NETIFACE-TORONTO-NetifaceAmericaIncUS Germany 2->49 53 Sample is packed with UPX 2->53 9 putita.arm5.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 61 Sample tries to set files in /etc globally writable 9->61 63 Sample tries to persist itself using /etc/profile 9->63 65 Drops files in suspicious directories 9->65 67 3 other signatures 9->67 13 putita.arm5.elf sh 9->13         started        15 putita.arm5.elf sh 9->15         started        17 putita.arm5.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.arm5.elf 20->30         started        32 putita.arm5.elf 20->32         started        34 putita.arm5.elf 20->34         started        process9 file10 39 /var/spool/cron/crontabs/tmp.C2UjHs, ASCII 22->39 dropped 57 Sample tries to persist itself using cron 22->57 59 Executes the "crontab" command typically for achieving persistence 22->59 36 sh crontab 26->36         started        signatures11 process12 signatures13 55 Executes the "crontab" command typically for achieving persistence 36->55
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/cf139ddd0632d4cc76d99de0157ad7b490c349a1a6a0d537f2b0dc14b4ec3125
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cf139ddd0632d4cc76d99de0157ad7b490c349a1a6a0d537f2b0dc14b4ec3125/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z4jz3xigglkmy5wztxqbk6wxwsimgsnbu2qnkn7swdobjnhmgesq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution persistence privilege_escalation upx
Link:
https://tria.ge/reports/260818-yxfmkszcnd/
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.

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: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:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
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 cf139ddd0632d4cc76d99de0157ad7b490c349a1a6a0d537f2b0dc14b4ec3125

(this sample)

Mirai

elf 35ce2bea70b425f52942c835be2366b315cb5e424b2187c09714dfab6bd89adb

  
URLhaus
https://urlhaus.abuse.ch/url/3892132/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 35ce2bea70b425f52942c835be2366b315cb5e424b2187c09714dfab6bd89adb
  
Dropping
MD5 044a201392c59b52fca35418785b18ee

Comments