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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8bc00a58f1b6eb48140a4a68828be4210b292dde8cf6917b3ec41368b4ba595d. 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


CatStorm


Vendor detections: 7


Intelligence 7 IOCs YARA 35 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8bc00a58f1b6eb48140a4a68828be4210b292dde8cf6917b3ec41368b4ba595d
SHA3-384 hash: 3978af397fa9f64635a36521948e4b23b95bc19f1dc8b7481261ad07899f94e4c9b1eeb4923d4e35df165206150ec304
SHA1 hash: 2b27e472ff01c7048208a5e93343890740f0c616
MD5 hash: a1c64573c4caa1709f316de9ecbcf8ca
humanhash: yellow-virginia-failed-minnesota
File name:armv7l
Download: download sample
Signature CatStorm
Create hunting rule
File size:5'963'960 bytes
First seen:2026-10-27 05:04:20 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:dc+IlsokZqIICI4tOzPRUCEKjaBNKkxC3Odw6tBlJs2N5Eu:dfcQIZxEK90tLDEu
TLSH T18F561897B9D24942C4E43A77B9BD80C433634EBA9BC612566D04FE3C3EBE1990E35358
telfhash t11ce068d6c94c23cc47d3c0a8029b029559b635fa0720ba89aece776b0a82485f18ec67
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 BlinkzSec
Tags:CatStorm

Intelligence

File Origin
# of uploads :
1
# of downloads :
51
Origin country :
AT AT
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Flooder-5.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:
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/8bc00a58f1b6eb48140a4a68828be4210b292dde8cf6917b3ec41368b4ba595d
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-10-27T03:25:00Z UTC
Last seen:
2026-10-28T20:33:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/8bc00a58f1b6eb48140a4a68828be4210b292dde8cf6917b3ec41368b4ba595d/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/ae6ba0a5-b3d2-4eb8-b41f-52493547b158
Behavior Graph:
Download SVG
%3 guuid=64b47aa8-1e00-0000-6e33-38e9840b0000 pid=2948 /usr/bin/sudo guuid=40b428aa-1e00-0000-6e33-38e9870b0000 pid=2951 /tmp/sample.bin guuid=64b47aa8-1e00-0000-6e33-38e9840b0000 pid=2948->guuid=40b428aa-1e00-0000-6e33-38e9870b0000 pid=2951 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b6ec5d43-791f-4e21-9868-7fdddf79579b
Result
Threat name:
CatStorm
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1992732
Signature
Multi AV Scanner detection for submitted file
Yara detected CatStorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1992732 Sample: armv7l.elf Startdate: 27/10/2026 Architecture: LINUX Score: 56 34 Multi AV Scanner detection for submitted file 2->34 36 Yara detected CatStorm 2->36 14 armv7l.elf 2->14         started        process3 process4 16 armv7l.elf armv7l.elf 14->16         started        process5 18 armv7l.elf armv7l.elf 16->18         started        process6 20 armv7l.elf armv7l.elf 18->20         started        process7 22 armv7l.elf armv7l.elf 20->22         started        process8 24 armv7l.elf armv7l.elf 22->24         started        process9 26 armv7l.elf armv7l.elf 24->26         started        process10 28 armv7l.elf armv7l.elf 26->28         started        process11 30 armv7l.elf armv7l.elf 28->30         started        process12 32 armv7l.elf armv7l.elf 30->32         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/8bc00a58f1b6eb48140a4a68828be4210b292dde8cf6917b3ec41368b4ba595d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8bc00a58f1b6eb48140a4a68828be4210b292dde8cf6917b3ec41368b4ba595d/
Threat name:
Linux.Backdoor.DarkDDoSer
Create hunting rule
Status:
Suspicious
First seen:
2026-10-27 05:03:10 UTC
File Type:
ELF32 Little (Exe)
AV detection:
10 of 24 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rpaauwhrw3vuqfakjjuifc7eeefsslo6rt3jc6z6yqjwrnf2lfoq._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
credential_access discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/261027-fq5zsacg25/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Writes file to tmp directory
Reads process memory
Creates/modifies Cron job
Enumerates running processes
Modifies init.d
Modifies systemd
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:ach_202610_elf_catstorm
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Author:abuse.ch
Description:Detects CatStorm
Rule name:APT_Bitter_ZxxZ_Downloader
Create hunting rule
Author:SECUINFRA Falcon Team (@SI_FalconTeam)
Description:Detects Bitter (T-APT-17) ZxxZ Downloader
Reference:https://www.secuinfra.com/en/techtalk/whatever-floats-your-boat-bitter-apt-continues-to-target-bangladesh
Rule name:CP_Script_Inject_Detector
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Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectEncryptedVariants
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Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:DetectGoMethodSignatures
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Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:Detect_Go_GOMAXPROCS
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Author:Obscurity Labs LLC
Description:Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata
Rule name:ELF_Packer_Dropper_Fileless_Armhf
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Author:Serhii Kocherhan
Description:Detects obfuscated Linux ELF packers/droppers featuring ChaCha20/RC4 decryption, memfd_create/execveat fileless execution capabilities, and unique binary artifacts.
Rule name:enterpriseapps2
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Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:exploit_any_poppopret
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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
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Author:s1ckb017
Rule name:GoBinTest
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Rule name:golang
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Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:Golang_Find_CSC846
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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:LIN_Malware_Unknown_ForgeAuto_0daebbb8
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Author:Marjoriefort
Description:Detects Unknown (elf, etat binaire)
Rule name:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
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:NSVPS_Hydra_SSH_Bruteforce
Create hunting rule
Author:sanad (NSVPS-SOC)
Description:Hydra SSH brute-force campaign credentials pattern from NSVPS honeypot
Rule name:ProgramLanguage_Golang
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Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:RANSOMWARE
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Author:ToroGuitar
Rule name:RIPEMD160_Constants
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Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:setsockopt
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Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
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:telebot_framework
Create hunting rule
Author:vietdx.mb
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
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Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:vmdetect
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Author:nex
Description:Possibly employs anti-virtualization techniques
Rule name:Web_Generic_Binary_URL_Download
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Author:Serhii Kocherhan
Description:Detects files containing HTTP or HTTPS links pointing directly to .bin payload extensions.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

CatStorm

elf 8bc00a58f1b6eb48140a4a68828be4210b292dde8cf6917b3ec41368b4ba595d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/4035100/
  
Delivery method
Distributed via web download

Comments