MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e631961754aecfab4c11d53b72cf6782d140ac342a229dbbe697b18139693550. 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: 9

Intelligence 9 IOCs YARA 28 File information Comments

SHA256 hash:	e631961754aecfab4c11d53b72cf6782d140ac342a229dbbe697b18139693550
SHA3-384 hash:	785f21c71766f3f25e74c3503b819120791dce556c2e8f0bb4cb9da51d4f1cf607207e557470f68d5ce7430965ca0309
SHA1 hash:	5eb7678010fb45168958773bba303b429221d157
MD5 hash:	36fb6934cb788f3b952ab23c7baff4fa
humanhash:	six-venus-coffee-lactose
File name:	x86_64
Download:	download sample
Signature	CatStorm Create hunting rule
File size:	6'234'274 bytes
First seen:	2026-10-15 02:02:50 UTC
Last seen:	Never
File type:	elf
MIME type:	application/x-executable
ssdeep	49152:sq/k05q1M8Itz8XJZeT0nQnyj3nx08Tclqn5RfLYO7s7J5XNvDIb8KlK1Kczm/8s:sql56cTmvbfM2bazm/LEw
TLSH	T1A4565B07FC5925E9C0EE92348AA69113BB717C895B3123D32B90B3287F77BD069B9744
telfhash	t1fb3248314dbd35b5b696da10b3a3b4f899371ca572f878b11463a884ffc5e801ca2877
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:	CatStorm elf

Intelligence

File Origin

# of uploads :

# of downloads :

115

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

SecuriteInfo.com.Linux.Flooder-5.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Manages services

Connection attempt

Changes access rights for a written file

Changes the time when the file was created, accessed, or modified

Creating a process from a recently created file

Runs as daemon

Deleting a recently created file

Sends data to a server

Creating a file in the %temp% directory

Receives data from a server

Creating a file

Launching a process

Writes files to system subdirectory

Creates or modifies files in /cron to set up autorun

Creates or modifies files in /init.d to set up autorun

Creates or modifies files to set up autorun

Gathering data

Verdict:

Malicious

Uses P2P?:

false

Uses anti-vm?:

false

Architecture:

x86

Packer:

not packed

Botnet:

unknown

Number of open files:

Number of processes launched:

Processes remaning?

true

Remote TCP ports scanned:

not identified

Full report:

https://elfdigest.com/brief/e631961754aecfab4c11d53b72cf6782d140ac342a229dbbe697b18139693550

Behaviour

Persistence

Process Renaming

Information Gathering

Botnet C2s

TCP botnet C2(s):

not identified

UDP botnet C2(s):

type: 1.0.0.1:80

Verdict:

Malicious

File Type:

elf.64.le

First seen:

2026-10-14T23:39:00Z UTC

Last seen:

2026-10-15T00:54:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/e631961754aecfab4c11d53b72cf6782d140ac342a229dbbe697b18139693550/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/6f5d5d81-cd4a-4532-886d-ba90ee6887d9

Behavior Graph:

Download SVG

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/2fe4c970-f153-4f16-b201-3ad9520dd14a

Score:

73%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/e631961754aecfab4c11d53b72cf6782d140ac342a229dbbe697b18139693550

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/e631961754aecfab4c11d53b72cf6782d140ac342a229dbbe697b18139693550/

Threat name:

Linux.Trojan.Generic

Status:

Suspicious

First seen:

2026-10-15 02:10:20 UTC

AV detection:

13 of 38 (34.21%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=4yyzmf2uv3h2wtar2u5xft3hqliublbufirj3o7gs6yycoljgvia._file

Result

Malware family:

n/a

Score:

6/10

Tags:

discovery execution linux persistence privilege_escalation

Link:

https://tria.ge/reports/261015-cgxehats8j/

Behaviour

Enumerates kernel/hardware configuration

Reads runtime system information

Writes file to tmp directory

Creates/modifies Cron job

Modifies init.d

Modifies systemd

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Suspicious File

Score:

0.59

Link:

https://yomi.yoroi.company/submissions/e631961754aecfab4c11d53b72cf6782d140ac342a229dbbe697b18139693550

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:	enterpriseapps2 Create hunting rule
Author:	Tim Brown @timb_machine
Description:	Enterprise apps

Rule name:	F01_s1ckrule Create hunting rule
Author:	s1ckb017

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:	LIN_Sample_Unique_4c099562 Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (elf, etat binaire)

Rule name:	MD5_Constants Create hunting rule
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 Create hunting rule
Author:	albertzsigovits
Description:	Application written in Golang programming language

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	setsockopt Create hunting rule
Author:	Tim Brown @timb_machine
Description:	Hunts for setsockopt() red flags

Rule name:	SHA1_Constants Create hunting rule
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 Create hunting rule
Author:	Tim Brown @timb_machine
Description:	Hunts for UNIX red flags

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

Rule name:	Web_Generic_Binary_URL_Download Create hunting rule
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 e631961754aecfab4c11d53b72cf6782d140ac342a229dbbe697b18139693550

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3926245/

Delivery method

Distributed via web download

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