MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcb1ef5bb211a8a3402b4a9cdf2469e4b2cc8b5a5fc14f859ecbf79ee2a25177. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bcb1ef5bb211a8a3402b4a9cdf2469e4b2cc8b5a5fc14f859ecbf79ee2a25177
SHA3-384 hash: 8614fe1bcca22ed1380ae9ba16eacba456f4a08ae9eb3909f7e644efd4253bde951760e951e8dbed1824763efa389139
SHA1 hash: 8b40b511b96443ca2c83532bd7024160eff4d809
MD5 hash: 9de6a052f098e436f10b3d5d199734bf
humanhash: bakerloo-snake-xray-harry
File name:putita.arm6
Download: download sample
Signature Mirai
Create hunting rule
File size:124'352 bytes
First seen:2026-07-16 18:03:00 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:aY45kbyt+I9M6lKBx9RokeVElcYEEUrH7pCx2a0hfrmFT72Uk8W+Af1DlF:aYj5sEs+lcYEEUrH7pI2Z9rmFztxA95F
TLSH T184C329A9F880DE52C6D1267AF75E514C33231378D3DE7109CE209E3467EBD5A0E7A942
Magika elf
Reporter abuse_ch
Tags:elf mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 94a0d43d06b5823ac41cb0e4904b3df757c8a059c1f562ab129913314c9456fc
File size (compressed) :54'484 bytes
File size (de-compressed) :124'352 bytes
Format:linux/arm
Packed file: 94a0d43d06b5823ac41cb0e4904b3df757c8a059c1f562ab129913314c9456fc

Intelligence

File Origin
# of uploads :
1
# of downloads :
71
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.ELF.Mirai-DJZ.76844227.UNOFFICIAL
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gcc masquerade mirai rust
Link:
https://www.filescan.io/uploads/6a591cf965b415d15b0ede10/reports/b8adf9aa-aeb5-49b6-973a-374d1a231fb4/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
51
Number of processes launched:
16
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/bcb1ef5bb211a8a3402b4a9cdf2469e4b2cc8b5a5fc14f859ecbf79ee2a25177
Behaviour
Persistence
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-07-16T16:07:00Z UTC
Last seen:
2026-07-18T15:29:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/bcb1ef5bb211a8a3402b4a9cdf2469e4b2cc8b5a5fc14f859ecbf79ee2a25177/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/a8f9308b-e148-427a-9b67-9110dd2fa029
Behavior Graph:
Download SVG
%3 guuid=3f09e2b0-1e00-0000-99b9-886d38140000 pid=5176 /usr/bin/sudo guuid=91c17bb3-1e00-0000-99b9-886d39140000 pid=5177 /tmp/sample.bin guuid=3f09e2b0-1e00-0000-99b9-886d38140000 pid=5176->guuid=91c17bb3-1e00-0000-99b9-886d39140000 pid=5177 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/76865c00-805f-4ebe-918c-de49f1a5e07a
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1943770
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 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: 1943770 Sample: putita.arm6.elf Startdate: 16/07/2026 Architecture: LINUX Score: 84 49 64.89.163.215, 59900, 59902, 59904 NETIFACE-TORONTO-NetifaceAmericaIncUS Germany 2->49 53 Multi AV Scanner detection for submitted file 2->53 9 putita.arm6.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.arm6.elf sh 9->13         started        15 putita.arm6.elf sh 9->15         started        17 putita.arm6.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.arm6.elf 20->30         started        32 putita.arm6.elf 20->32         started        34 putita.arm6.elf 20->34         started        process9 file10 39 /var/spool/cron/crontabs/tmp.zf5b8x, 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/bcb1ef5bb211a8a3402b4a9cdf2469e4b2cc8b5a5fc14f859ecbf79ee2a25177
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bcb1ef5bb211a8a3402b4a9cdf2469e4b2cc8b5a5fc14f859ecbf79ee2a25177/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-07-16 18:03:41 UTC
File Type:
ELF32 Little (SO)
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xsy66w5scgukgqbljkon6jdj4szmzc22l7au7bm6zp3z5yvckf3q._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion execution persistence privilege_escalation
Link:
https://tria.ge/reports/260716-wnazmaev21/
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/bcb1ef5bb211a8a3402b4a9cdf2469e4b2cc8b5a5fc14f859ecbf79ee2a25177

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: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 94a0d43d06b5823ac41cb0e4904b3df757c8a059c1f562ab129913314c9456fc

Mirai

elf bcb1ef5bb211a8a3402b4a9cdf2469e4b2cc8b5a5fc14f859ecbf79ee2a25177

(this sample)

  
Dropped by
SHA256 94a0d43d06b5823ac41cb0e4904b3df757c8a059c1f562ab129913314c9456fc
  
URLhaus
https://urlhaus.abuse.ch/url/3885285/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 77d001a65f6f313f12b074d8fb33c142

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