MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21f6f7aef040ad4422fb88996eced78ca55084e3ddd238bf848818d1b762074b. 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: 21f6f7aef040ad4422fb88996eced78ca55084e3ddd238bf848818d1b762074b
SHA3-384 hash: cdbe296a8ec7078536b52fbdc60cc34f550901fe17f610162910b4379c5e238d40eb3d6f81458d9e38dac0b93a209b2a
SHA1 hash: b8db7e26dc5570437a56dd07e1db1d6e84f5c556
MD5 hash: f589b0df512778bf0794625454336802
humanhash: sweet-diet-bravo-helium
File name:powerpc.kok
Download: download sample
Signature Mirai
Create hunting rule
File size:99'636 bytes
First seen:2026-01-13 19:55:13 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:JAsb570wMk9G18mih5EDkR0GS288ffveRmKy7GjGfyi7gDQR:J71x2zhK0G01RBy5fBR
TLSH T14BA36D06B7080E43E1B36DB43F3F27D1D3DAAA9122F4A648255ABB49C0729326547FDD
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
108
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-10001386-0
Create hunting rule

Unix.Trojan.Mirai-10010127-0
Create hunting rule

Unix.Trojan.Mirai-10017351-0
Create hunting rule

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
masquerade mirai
Link:
https://www.filescan.io/uploads/6966a329b5214ecba5eedcf5/reports/d9931f6b-ad55-43b9-b635-a9da8270a268/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-01-13T17:58:00Z UTC
Last seen:
2026-01-15T07:26:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/21f6f7aef040ad4422fb88996eced78ca55084e3ddd238bf848818d1b762074b/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/52d526bd-8c9b-4358-9120-04911a546451
Behavior Graph:
Download SVG
%3 guuid=da6f4c74-1600-0000-283b-e1ff5b0c0000 pid=3163 /usr/bin/sudo guuid=591b9976-1600-0000-283b-e1ff5c0c0000 pid=3164 /tmp/sample.bin guuid=da6f4c74-1600-0000-283b-e1ff5b0c0000 pid=3163->guuid=591b9976-1600-0000-283b-e1ff5c0c0000 pid=3164 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/cbb5dab0-37a2-411e-90c4-e9718b2e88d5
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1850177
Signature
Drops files in suspicious directories
Drops invisible ELF files
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
Sample deletes itself
Sample reads /proc/mounts (often used for finding a writable filesystem)
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
Terminates several processes with shell command 'killall'
Writes identical ELF files to multiple locations
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1850177 Sample: powerpc.kok.elf Startdate: 13/01/2026 Architecture: LINUX Score: 96 95 91.92.241.12, 48146, 6969 THEZONEBG Bulgaria 2->95 97 109.202.202.202, 80 INIT7CH Switzerland 2->97 99 3 other IPs or domains 2->99 103 Multi AV Scanner detection for submitted file 2->103 11 powerpc.kok.elf 2->11         started        14 dash rm 2->14         started        16 dash rm 2->16         started        signatures3 process4 signatures5 113 Sample reads /proc/mounts (often used for finding a writable filesystem) 11->113 18 powerpc.kok.elf 11->18         started        process6 file7 77 /var/spool/cron/root, ASCII 18->77 dropped 79 /var/spool/cron/crontabs/root, ASCII 18->79 dropped 81 /root/.bashrc, ASCII 18->81 dropped 83 11 other files (10 malicious) 18->83 dropped 105 Sample tries to set files in /etc globally writable 18->105 107 Sample tries to persist itself using /etc/profile 18->107 109 Drops files in suspicious directories 18->109 111 4 other signatures 18->111 22 powerpc.kok.elf sh 18->22         started        24 powerpc.kok.elf sh 18->24         started        26 powerpc.kok.elf sh 18->26         started        28 20 other processes 18->28 signatures8 process9 process10 30 sh cp 22->30         started        34 sh crontab 24->34         started        36 sh 24->36         started        38 sh cp 26->38         started        40 sh cp 28->40         started        42 sh cp 28->42         started        44 sh rm 28->44         started        46 18 other processes 28->46 file11 85 /usr/bin/.update, ELF 30->85 dropped 115 Writes identical ELF files to multiple locations 30->115 117 Drops invisible ELF files 30->117 119 Drops files in suspicious directories 30->119 87 /var/spool/cron/crontabs/tmp.WhuUlw, ASCII 34->87 dropped 121 Sample tries to persist itself using cron 34->121 123 Executes the "crontab" command typically for achieving persistence 34->123 48 sh crontab 36->48         started        89 /boot/.update, ELF 38->89 dropped 91 /var/jbx/shared/.update, ELF 40->91 dropped 93 /var/log/.update, ELF 42->93 dropped 125 Sample deletes itself 44->125 127 Terminates several processes with shell command 'killall' 46->127 51 S99backup0 46->51         started        53 S99backup1 46->53         started        55 S99backup2 46->55         started        57 5 other processes 46->57 signatures12 process13 signatures14 101 Executes the "crontab" command typically for achieving persistence 48->101 59 S99backup0 .update 51->59         started        69 5 other processes 51->69 61 S99backup1 .update 53->61         started        71 5 other processes 53->71 63 S99backup2 .update 55->63         started        73 5 other processes 55->73 65 S99network .update 57->65         started        67 .monitor .update 57->67         started        75 6 other processes 57->75 process15
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/21f6f7aef040ad4422fb88996eced78ca55084e3ddd238bf848818d1b762074b
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/21f6f7aef040ad4422fb88996eced78ca55084e3ddd238bf848818d1b762074b/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-13 19:55:30 UTC
File Type:
ELF32 Big (Exe)
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eh3pplxqicwuiix3rcmw5twxrssvbbhd3xjdrp4eramndn3ca5fq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260113-ynb8sshw3b/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/8497e380-785f-4e76-85c6-e08840c99e2d
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/21f6f7aef040ad4422fb88996eced78ca55084e3ddd238bf848818d1b762074b

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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
Rule name:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_irc_catcher
Create hunting rule
Author:@_lubiedo
Description:Find new ELF IRC samples
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 21f6f7aef040ad4422fb88996eced78ca55084e3ddd238bf848818d1b762074b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3749713/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3757305/

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