MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b123c0917c68522fc7c5e8cf64555276595b22418aaaa91eb08a21b736bea5ea. 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

Gafgyt

Vendor detections: 10

Intelligence 10 IOCs YARA 2 File information Comments

SHA256 hash:	b123c0917c68522fc7c5e8cf64555276595b22418aaaa91eb08a21b736bea5ea
SHA3-384 hash:	7887e5a0ae1252a6816d134fd27f73a8abf6f0d10d6232fe8b254a7f0993ca9a0b1156ffe1212ed073841b59c73cac59
SHA1 hash:	1dcf1e181dab802f48dfd99c40c59ff44c5dea9d
MD5 hash:	362e9d20c68948d65e841fa75e596c0f
humanhash:	oxygen-december-winner-johnny
File name:	SecuriteInfo.com.Linux.Siggen.1179.31526.7276
Download:	download sample
Signature	Gafgyt Create hunting rule
File size:	43'452 bytes
First seen:	2025-11-20 09:13:48 UTC
Last seen:	2025-11-21 02:19:03 UTC
File type:	elf
MIME type:	application/x-executable
ssdeep	768:9oGE7gQtVQ32y3xKul7UrVIAh44qrVrchRNB7/6Gwbj9nM75+mO2JiGar:2GEDtVQ3X3xn7UxFKLhwXNWb5o+mHilr
TLSH	T17D13F1B3907A6B31C837F073A9524D8CF76FF8811E1003A31EC7A6A69F7E8811D62650
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	SecuriteInfoCom
Tags:	elf gafgyt 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) :	43'452 bytes
File size (de-compressed) :	108'745 bytes
Format:	linux/amd64
Unpacked file:	f8a17c0e18852a85ce3a1d69bb9cb5bf700a1aca60bc728f3797b4c7e12e1bec

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Detection(s):

SecuriteInfo.com.Linux.Siggen.1179.31526.7276.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Launching a process

Removes directories

Sends data to a server

Removes directories from a temporary directory

Deletes a file

Removes directories from a subdirectory of a temporary directory

Connection attempt

Substitutes an application name

Deleting of the original file

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

mirai packed upx

Link:

https://www.filescan.io/uploads/691edbfb1e4f5d3a742ba955/reports/dd16932a-13fb-4c04-8229-40034439dd68/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?

true

Remote TCP ports scanned:

not identified

Full report:

https://elfdigest.com/brief/b123c0917c68522fc7c5e8cf64555276595b22418aaaa91eb08a21b736bea5ea

Behaviour

Process Renaming

Botnet C2s

TCP botnet C2(s):

type:Gafgyt 176.100.37.194:282

UDP botnet C2(s):

not identified

Verdict:

Malicious

File Type:

elf.64.le

First seen:

2025-11-20T05:09:00Z UTC

Last seen:

2025-11-20T10:18:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/b123c0917c68522fc7c5e8cf64555276595b22418aaaa91eb08a21b736bea5ea/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/3c7cde74-3d7d-4741-9b19-8afcb3e6206b

Behavior Graph:

Download SVG

Malware family:

Gafgyt

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/1ac26d56-30e0-404d-967d-5b47114c9322

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/b123c0917c68522fc7c5e8cf64555276595b22418aaaa91eb08a21b736bea5ea

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b123c0917c68522fc7c5e8cf64555276595b22418aaaa91eb08a21b736bea5ea/

Threat name:

Linux.Backdoor.Gafgyt

Status:

Malicious

First seen:

2025-11-20 07:37:03 UTC

File Type:

ELF64 Little (Exe)

AV detection:

16 of 24 (66.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wer4bel4nbjc7r6f5dhwivksozmvwisbrkvkshvqriq3onv6uxva._file

Result

Malware family:

n/a

Score:

7/10

Tags:

defense_evasion discovery linux privilege_escalation upx

Link:

https://tria.ge/reports/251120-k7k36asnbv/

Behaviour

Reads runtime system information

System Network Configuration Discovery

Changes its process name

Reads CPU attributes

Reads system network configuration

Abuse Elevation Control Mechanism: Sudo and Sudo Caching

Deletes log files

Enumerates running processes

Reads system routing table

Deletes Audit logs

Deletes itself

Deletes journal logs

Deletes system logs

Flushes firewall rules

Writes DNS configuration

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/4e904941-8eee-4707-b1af-8b4caade3feb

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

Threat name:

Legit

Score:

0.09

Link:

https://yomi.yoroi.company/submissions/b123c0917c68522fc7c5e8cf64555276595b22418aaaa91eb08a21b736bea5ea

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:	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.

Web download

Gafgyt

elf b123c0917c68522fc7c5e8cf64555276595b22418aaaa91eb08a21b736bea5ea

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3712527/

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3712348/

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