MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8c892f6fc9989c499e15ed02b7ee0310146f63ebce40c79cb4a7290cd9d3ea2. 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: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8c892f6fc9989c499e15ed02b7ee0310146f63ebce40c79cb4a7290cd9d3ea2
SHA3-384 hash: 6b7fee2b2411f118ff7fbe3908caa77f2aeb0e948ba8cf979061af0312c51f36c0ef90f42b447791a2518e0c1af8b3dc
SHA1 hash: acf024645075d1a5593a3bf077b4b0e2982276c6
MD5 hash: a7d9b3f928a5bc7f4e8678a939a0079d
humanhash: eighteen-king-ohio-pip
File name:putita.arm7
Download: download sample
Signature Mirai
Create hunting rule
File size:124'356 bytes
First seen:2026-07-17 18:47:13 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:Bc9mMYnhxeOo1iJKHUQ4g8OFCqFEAV6OLx78mxk3f1Dlh:Bc8Xn7evHUQ4g8OgqFEKx78wk395h
TLSH T1B8C32B99FC90DE52C6D52679FA5E128C332353B8C3DA7106CD209F3477EBD5A0A3A942
Magika elf
Reporter abuse_ch
Tags:elf mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 bc658eaff9e085c43280052034ea30014908e54946c8f9b3a820cb97fe4c9430
File size (compressed) :53'780 bytes
File size (de-compressed) :124'356 bytes
Format:linux/arm
Packed file: bc658eaff9e085c43280052034ea30014908e54946c8f9b3a820cb97fe4c9430

Intelligence

File Origin
# of uploads :
1
# of downloads :
80
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.ELF.Mirai-DJZ.45916556.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Changes access rights for a written file
Changes the time when the file was created, accessed, or modified
Runs as daemon
Opens a port
Launching a process
Creates or modifies symbolic links
Creating a file
Sends data to a server
Connection attempt
Receives data from a server
Sets a written file as executable
Writes files to system directory
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Deleting of the original file
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files to set up autorun
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
gcc masquerade mirai rust
Link:
https://www.filescan.io/uploads/6a5a78bf0b6b74a75dcc80e2/reports/a5f86d5e-e9c2-4f10-8f53-d94a12d693dd/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/b8c892f6fc9989c499e15ed02b7ee0310146f63ebce40c79cb4a7290cd9d3ea2
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:
2026-07-17T17:12:00Z UTC
Last seen:
2026-07-18T19:13:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b8c892f6fc9989c499e15ed02b7ee0310146f63ebce40c79cb4a7290cd9d3ea2/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/75542726-179e-4e98-8987-9aef5b8f7ff6
Behavior Graph:
Download SVG
%3 guuid=d48d2116-2800-0000-9ef8-09ae7c030000 pid=892 /usr/bin/sudo guuid=485b0519-2800-0000-9ef8-09ae7d030000 pid=893 /tmp/sample.bin guuid=d48d2116-2800-0000-9ef8-09ae7c030000 pid=892->guuid=485b0519-2800-0000-9ef8-09ae7d030000 pid=893 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/72b5bfa5-e937-44eb-8713-aa662a138412
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1944388
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: 1944388 Sample: putita.arm7.elf Startdate: 17/07/2026 Architecture: LINUX Score: 84 53 64.89.163.215, 60650, 60652, 60654 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 Multi AV Scanner detection for submitted file 2->59 9 putita.arm7.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 65 Sample tries to set files in /etc globally writable 9->65 67 Sample tries to persist itself using /etc/profile 9->67 69 Drops files in suspicious directories 9->69 71 3 other signatures 9->71 17 putita.arm7.elf sh 9->17         started        19 putita.arm7.elf sh 9->19         started        21 putita.arm7.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        61 Protects files from modification 21->61 34 putita.arm7.elf 24->34         started        36 putita.arm7.elf 24->36         started        38 putita.arm7.elf 24->38         started        process9 file10 51 /var/spool/cron/crontabs/tmp.wHboRr, ASCII 26->51 dropped 73 Sample tries to persist itself using cron 26->73 75 Executes the "crontab" command typically for achieving persistence 26->75 40 sh crontab 30->40         started        signatures11 process12 signatures13 63 Executes the "crontab" command typically for achieving persistence 40->63
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b8c892f6fc9989c499e15ed02b7ee0310146f63ebce40c79cb4a7290cd9d3ea2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8c892f6fc9989c499e15ed02b7ee0310146f63ebce40c79cb4a7290cd9d3ea2/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-07-17 18:47:48 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=xdejf5x4tge4jgpbl3icw7xageaun5r6xtsay6oljjzjbtm5h2ra._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion execution persistence privilege_escalation
Link:
https://tria.ge/reports/260717-xfg9eafs3w/
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/b8c892f6fc9989c499e15ed02b7ee0310146f63ebce40c79cb4a7290cd9d3ea2

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 bc658eaff9e085c43280052034ea30014908e54946c8f9b3a820cb97fe4c9430

Mirai

elf b8c892f6fc9989c499e15ed02b7ee0310146f63ebce40c79cb4a7290cd9d3ea2

(this sample)

  
Dropped by
SHA256 bc658eaff9e085c43280052034ea30014908e54946c8f9b3a820cb97fe4c9430
  
URLhaus
https://urlhaus.abuse.ch/url/3885281/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 477bd804d4b82da1e2d9d5bc41e0a8ce

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