MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180. 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

Threat unknown

Vendor detections: 8

Intelligence 8 IOCs YARA 6 File information Comments 1

SHA256 hash:	640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180
SHA3-384 hash:	2953a3ca3b0012367861192611e027671154af80d1e9d1d9a656c969eb25e971569a243756745ecb1d4a6fabdc8721b8
SHA1 hash:	0424f2c9a4de1e56ef7a2767ed5cb6874c27391a
MD5 hash:	80a0000c25616e460d0602be0b01278c
humanhash:	winter-golf-fifteen-butter
File name:	ubuntu_1771654714_elf_cache
Download:	download sample
File size:	1'006'168 bytes
First seen:	2026-02-21 08:12:58 UTC
Last seen:	2026-07-16 01:03:47 UTC
File type:	elf
MIME type:	application/x-executable
ssdeep	24576:O4JlljICm5+rzmN+SinV4ebmNtVi+w3yYJbW8YlpQaW:O4Jl4uV4Kms4aWNzQF
TLSH	T1262533FFD5263DFE6151D2D36B49498A53D4E933A1A02C64DFD2F0CB84393686CA2898
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	Skynet11
Tags:	UPX

UPX packed

This file is packed with UPX. We have therefore unpacked the file. Below is furhter information about the unpacked (de-compressed) file.

File size (compressed) :	1'006'168 bytes
File size (de-compressed) :	2'863'239 bytes
Format:	linux/amd64
Unpacked file:	6041b27598fa7db6df3364ba1e1d94268616bef7ccab5cd48c2646b6a7d087e2

Intelligence

File Origin

# of uploads :

# of downloads :

108

Origin country :

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/5bec3d2c-0d69-4066-a0bf-7cc43a6b242b/

Verdict:

Malicious

Uses P2P?:

false

Uses anti-vm?:

false

Architecture:

x86

Packer:

UPX

Botnet:

unknown

Number of open files:

Number of processes launched:

Processes remaning?

false

Remote TCP ports scanned:

not identified

Full report:

https://elfdigest.com/brief/640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180

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

First seen:

2025-07-07T21:13:00Z UTC

Last seen:

2025-11-06T02:46:00Z UTC

Hits:

~100

Detections:

HEUR:Trojan.Linux.Agent.gen

Link:

https://opentip.kaspersky.com/640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/f4316e1c-31cb-4c7c-ac35-d946a2adaa84

Behavior Graph:

Download SVG

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/2a9e9844-66c6-4e44-b1f1-3120f1256ed2

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180/

Verdict:

Malicious

Link:

https://tip.neiki.dev/file/640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180

Threat name:

Linux.PUA.Multiverze

Status:

Malicious

First seen:

2025-08-07 04:11:35 UTC

File Type:

ELF64 Little (Exe)

AV detection:

18 of 36 (50.00%)

Threat level:

1/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=mqgic5zcutgseji7z7yqb7n2cz5x377yqxzwwx3e6lkzyusrigaa._file

Result

Malware family:

n/a

Score:

5/10

Tags:

discovery linux upx

Link:

https://tria.ge/reports/260221-j4x3waey9b/

Behaviour

Enumerates kernel/hardware configuration

Reads runtime system information

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

Threat name:

Legit

Score:

0.29

Link:

https://yomi.yoroi.company/submissions/640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180

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:	GoBinTest Create hunting rule

Rule name:	golang_binary_string Create hunting rule
Description:	Golang strings present

Rule name:	linux_generic_ipv6_catcher Create hunting rule
Author:	@_lubiedo
Description:	ELF samples using IPv6 addresses

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

Rule name:	SUSP_ELF_LNX_UPX_Compressed_File Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects a suspicious ELF binary with UPX compression
Reference:	Internal Research

Rule name:	upx_packed_elf_v1 Create hunting rule
Author:	RandomMalware

File information

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

elf 640c817722a4cd22251fcff100fdba167b7dfff885f36b5f64f2d59c52514180

(this sample)

elf 6041b27598fa7db6df3364ba1e1d94268616bef7ccab5cd48c2646b6a7d087e2

Dropping

SHA256 6041b27598fa7db6df3364ba1e1d94268616bef7ccab5cd48c2646b6a7d087e2

Dropping

MD5 bc34eb025d65fad3e1a5025979cbcb21

Comments

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Skynet commented on 2026-02-21 08:14:35 UTC

SCP'd to /tmp/cache by 165.245.134.104