MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b11548afc62523403824257077d9fa2b89cadf08244658b48a4bdba3294b97f. 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

ConnectBack

Vendor detections: 11

Intelligence 11 IOCs YARA 1 File information Comments 1

SHA256 hash:	3b11548afc62523403824257077d9fa2b89cadf08244658b48a4bdba3294b97f
SHA3-384 hash:	859ee88b2139fc62730ea0eda633f538043b67903f7546531c2734e14a364ac80a0cc2286c3840177c99c3566fb4e747
SHA1 hash:	422cb9e965aeeaee7870aaa0be6edc4ac13e5f00
MD5 hash:	3af6053f0222924e341221a8e5580f7e
humanhash:	aspen-stairway-fruit-minnesota
File name:	3af6053f0222924e341221a8e5580f7e
Download:	download sample
Signature	ConnectBack Create hunting rule
File size:	250 bytes
First seen:	2024-07-31 19:19:40 UTC
Last seen:	Never
File type:	elf
MIME type:	application/x-executable
ssdeep	6:BnX//In8/r1uBxHocmTvfFQ3RQdygg5XJYD:BvwncrAH3me532D
TLSH	T1E3D080331F4A50DADAD4023FA5745D5CD77B8976574963311C60DC010C0A7045F52C75
TrID	50.1% (.) ELF Executable and Linkable format (Linux) (4022/12) 49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Reporter	zbetcheckin
Tags:	64 ConnectBack elf

Intelligence

File Origin

# of uploads :

# of downloads :

110

Origin country :

Vendor Threat Intelligence

Result

Verdict:

Malware

Maliciousness:

Behaviour

Connection attempt

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-debug

Link:

https://www.filescan.io/uploads/66aa8e7355684023171706b7/reports/eb0ebd03-b44e-4259-be61-b27c61c98ca6/overview

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/3b11548afc62523403824257077d9fa2b89cadf08244658b48a4bdba3294b97f

Behaviour

no suspicious findings

Botnet C2s

TCP botnet C2(s):

not identified

UDP botnet C2(s):

not identified

Result

Verdict:

MALICIOUS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/f0320b7e-41fa-4b07-a296-6245b2af0c78

Result

Threat name:

ConnectBack

Detection:

malicious

Classification:

troj

Score:

68 / 100

Link:

https://www.joesandbox.com/analysis/1485585

Signature

Found malware configuration

Machine Learning detection for sample

Multi AV Scanner detection for submitted file

Yara detected ConnectBack

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/3b11548afc62523403824257077d9fa2b89cadf08244658b48a4bdba3294b97f

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/3b11548afc62523403824257077d9fa2b89cadf08244658b48a4bdba3294b97f/

Threat name:

Linux.Backdoor.ConnectBack

Status:

Malicious

First seen:

2024-07-31 19:20:07 UTC

File Type:

ELF64 Little (Exe)

AV detection:

18 of 24 (75.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=hmivjcx4mjjdia4cijlqo7m7uk4jzlpqqjcglc2ius63umuuxf7q._file

Result

Malware family:

connectback

Score:

10/10

Tags:

family:connectback linux

Link:

https://tria.ge/reports/240731-x13qvatepe/

Malware Config

C2 Extraction:

15.206.116.117:8787

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/3b11548afc62523403824257077d9fa2b89cadf08244658b48a4bdba3294b97f

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:	Linux_Trojan_Metasploit_69e20012 Create hunting rule
Author:	Elastic Security

File information

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

Web download

ConnectBack

elf 3b11548afc62523403824257077d9fa2b89cadf08244658b48a4bdba3294b97f

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3081408/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_NX	Missing Non-Executable Memory Protection	critical
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Comments

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zbet commented on 2024-07-31 19:19:41 UTC

url : hxxp://15.206.116.117/test.elf