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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81. 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 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81
SHA3-384 hash: 76dcc3d435a8206306604b24d0ddc983134f86514a8508d19f3b0dc124c01f82db87adde45d1dffa86a84456685568a7
SHA1 hash: baac94ac16f9c8b783abcac3fa41ca14924ba4b2
MD5 hash: 749ab97d0f068de7e89f583e3a7ef99a
humanhash: lima-hot-nebraska-wolfram
File name:bot-linux-arm64
Download: download sample
Signature Mirai
Create hunting rule
File size:6'291'618 bytes
First seen:2026-11-04 12:56:08 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:6bo/N3Hx8N1aZY7G+Ai3Nl3i/jPnsdstkFngrED5EC:6boV3R8NkYAi3NQGsSsiEC
TLSH T13E566B56FC1D6822D6CA79345F6612857638BC448F82E7272A14BB3CF9F37688F13261
gimphash e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
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

Intelligence

File Origin
# of uploads :
1
# of downloads :
125
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

Gathering data
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.64.le
Link:
https://opentip.kaspersky.com/fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/49f5476c-8290-486a-934c-392ff43820d7
Behavior Graph:
Download SVG
%3 guuid=d71acd35-1800-0000-e607-f6bfa80a0000 pid=2728 /usr/bin/sudo guuid=66777e38-1800-0000-e607-f6bfad0a0000 pid=2733 /tmp/sample.bin guuid=d71acd35-1800-0000-e607-f6bfa80a0000 pid=2728->guuid=66777e38-1800-0000-e607-f6bfad0a0000 pid=2733 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/5ca5f57c-3c37-499c-b00c-fb988f6401a6
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1998221
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
Opens /proc/net/* files useful for finding connected devices and routers
Sample tries to persist itself using .desktop files
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Tries to read the AWS credentials file
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1998221 Sample: bot-linux-arm64.elf Startdate: 04/11/2026 Architecture: LINUX Score: 72 67 100.100.100.200, 80 UUNET-VerizonBusinessUS ZZ 2->67 69 169.254.169.254, 80 USDOS-USDepartmentofStateUS ZZ 2->69 71 4 other IPs or domains 2->71 9 bot-linux-arm64.elf 2->9         started        13 systemd bot-linux-arm64.elf 2->13         started        15 systemd snapd-env-generator 2->15         started        17 8 other processes 2->17 process3 file4 55 /root/.config/autostart/nyx-agent.desktop, ASCII 9->55 dropped 57 /root/.bashrc, ASCII 9->57 dropped 79 Tries to read the AWS credentials file 9->79 81 Sample tries to persist itself using .desktop files 9->81 83 Drops files in suspicious directories 9->83 85 Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions 9->85 19 bot-linux-arm64.elf crontab 9->19         started        23 bot-linux-arm64.elf update-rc.d 9->23         started        25 bot-linux-arm64.elf crontab 9->25         started        33 6 other processes 9->33 59 /etc/rc.local, POSIX 13->59 dropped 61 /etc/init.d/nyx-agent, POSIX 13->61 dropped 63 /etc/cron.d/nyx-agent, ASCII 13->63 dropped 65 /.config/autostart/nyx-agent.desktop, ASCII 13->65 dropped 87 Opens /proc/net/* files useful for finding connected devices and routers 13->87 89 Sample tries to persist itself using cron 13->89 91 Sample tries to persist itself using System V runlevels 13->91 27 bot-linux-arm64.elf crontab 13->27         started        29 bot-linux-arm64.elf systemctl 13->29         started        31 bot-linux-arm64.elf update-rc.d 13->31         started        35 5 other processes 13->35 signatures5 process6 file7 53 /var/spool/cron/crontabs/tmp.wuVGk8, ASCII 19->53 dropped 73 Sample tries to persist itself using cron 19->73 75 Executes the "crontab" command typically for achieving persistence 19->75 77 Sample tries to persist itself using System V runlevels 23->77 37 update-rc.d systemctl 23->37         started        39 systemctl systemd-sysv-install 29->39         started        41 update-rc.d systemctl 31->41         started        signatures8 process9 process10 43 systemd-sysv-install update-rc.d 39->43         started        45 systemd-sysv-install update-rc.d 39->45         started        47 systemd-sysv-install getopt 39->47         started        process11 49 update-rc.d systemctl 43->49         started        51 update-rc.d systemctl 45->51         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81/
Threat name:
Linux.Trojan.Wacatac
Create hunting rule
Status:
Suspicious
First seen:
2026-11-04 12:57:22 UTC
File Type:
ELF64 Little (Exe)
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7i47tcbszt4m3s7bh6tvxhc4o7f5rev2edpvgaecdgb3j5p53saq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/261104-p6e8qscy3p/
Malware Family:
ddos
Create hunting rule
Malicious:
True
Tags:
arm elf sets-process-name 64bits detect-debug-environment persistence
Link:
https://intel.virussign.com/intelligence/file/fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.30
Link:
https://yomi.yoroi.company/submissions/fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:DetectGoMethodSignatures
Create hunting rule
Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:Detect_Go_GOMAXPROCS
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata
Rule name:dsc
Create hunting rule
Author:Aaron DeVera
Description:Discord domains
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:F01_s1ckrule
Create hunting rule
Author:s1ckb017
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:Golang_Find_CSC846
Create hunting rule
Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:Golang_Find_CSC846_Simple
Create hunting rule
Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
Rule name:MIRAI_TELNETCURL_payload
Create hunting rule
Author:AfterPacket
Description:Mirai-lineage ELF payload carrying the leaked-source decoy domain
Reference:https://github.com/Afterpacket/drosera-threat-intel
Rule name:ProgramLanguage_Golang
Create hunting rule
Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Suspicious_Golang_Binary
Create hunting rule
Author:Tim Machac
Description:Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)
Rule name:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
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 fa39f98832ccf8cdcbe13fa75b9c5c77cbd892ba20df5300821983b4f5fddc81

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/4046859/

Comments