MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a4fbba9403d7c9c5f9f0be2172c284eacd540a4018049078bf7be1889ec0c99. 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

GCleaner

Vendor detections: 16

Intelligence 16 IOCs YARA 25 File information Comments

SHA256 hash:	6a4fbba9403d7c9c5f9f0be2172c284eacd540a4018049078bf7be1889ec0c99
SHA3-384 hash:	4b23d093e1d54072cf4d4a5f239e06d0d31c6894eeb35d0025a0f620be9ca93203d5d9396ae4dcb40ad307e0dbbe8de5
SHA1 hash:	610e63279f6811b43f4f209c94df7c9608f4ac70
MD5 hash:	f358e8e50868cf48d6f429fbe5348773
humanhash:	oxygen-lactose-gee-colorado
File name:	f358e8e50868cf48d6f429fbe5348773.exe
Download:	download sample
Signature	GCleaner Create hunting rule
File size:	4'725'248 bytes
First seen:	2025-02-27 06:33:12 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	2eabe9054cad5152567f0699947a2c5b (2'852 x LummaStealer, 1'312 x Stealc, 1'026 x Healer)
ssdeep	98304:5PZ0g+hzQPk5jEablKMYaoSQVGt69/eGsKvXEtnCjtex1:VZpwQP4JbgMYaoSQ8M7ol
TLSH	T15C26334EEF371276CA90327BFE4D51EE101AAF4FB06043E5B7F6A19094E2717215638A
TrID	32.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 28.9% (.EXE) Win32 Executable (generic) (4504/4/1) 13.0% (.EXE) OS/2 Executable (generic) (2029/13) 12.8% (.EXE) Generic Win/DOS Executable (2002/3) 12.8% (.EXE) DOS Executable Generic (2000/1)
Magika	pebin
dhash icon	96b2e8cce8b28e06 (60 x GCleaner, 1 x Formbook)
Reporter	abuse_ch
Tags:	exe gcleaner

Intelligence

File Origin

# of uploads :

# of downloads :

462

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

f358e8e50868cf48d6f429fbe5348773.exe

Verdict:

Malicious activity

Analysis date:

2025-02-27 06:58:39 UTC

Tags:

golang themida gcleaner loader auto generic

Link:

https://app.any.run/tasks/4e6259a2-908a-44d3-99b7-0a808ee50800

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

SecuriteInfo.com.Trojan.Lumma-1.UNOFFICIAL

Verdict:

Malicious

Score:

98.2%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67c007c3a0fd713c335d2da1

Tags:

cobalt micro virus hype

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Searching for analyzing tools

Launching a process

Creating a file in the %temp% subdirectories

Creating a file

Connection attempt to an infection source

Unauthorized injection to a system process

Sending an HTTP GET request to an infection source

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

obfuscated packed packed packer_detected

Link:

https://www.filescan.io/uploads/67c00764f8726576332b46ef/reports/6deaa798-f5e6-483c-bb51-bdc1b9632671/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/6a4fbba9403d7c9c5f9f0be2172c284eacd540a4018049078bf7be1889ec0c99

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/f63f2919-4f90-493c-a57c-18f5b8bbb3a2

Result

Threat name:

GCleaner

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1625408

Signature

Allocates memory in foreign processes

Antivirus / Scanner detection for submitted sample

C2 URLs / IPs found in malware configuration

Detected unpacking (changes PE section rights)

Found malware configuration

Hides threads from debuggers

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

PE file contains section with special chars

Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)

Tries to detect sandboxes / dynamic malware analysis system (registry check)

Tries to detect sandboxes and other dynamic analysis tools (window names)

Tries to detect virtualization through RDTSC time measurements

Tries to evade debugger and weak emulator (self modifying code)

Writes to foreign memory regions

Yara detected GCleaner

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/6a4fbba9403d7c9c5f9f0be2172c284eacd540a4018049078bf7be1889ec0c99

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/6a4fbba9403d7c9c5f9f0be2172c284eacd540a4018049078bf7be1889ec0c99/

Threat name:

Win32.Trojan.Generic

Status:

Suspicious

First seen:

2025-02-27 01:22:08 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

21 of 38 (55.26%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=njh3xkkahv6jyx47bprbolbij2wnkqfeagaesb4l667brcpmbsmq._file

Verdict:

malicious

Label(s):

gcleaner

Similar samples:

error

GCleaner

Result

Malware family:

gcleaner

Score:

10/10

Tags:

family:gcleaner defense_evasion discovery loader

Link:

https://tria.ge/reports/250227-hba7zayvdz/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Checks BIOS information in registry

Identifies Wine through registry keys

Loads dropped DLL

Downloads MZ/PE file

Identifies VirtualBox via ACPI registry values (likely anti-VM)

GCleaner

Gcleaner family

Malware Config

C2 Extraction:

185.156.73.73

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/cd2d2b97-b050-4da7-bdd4-a722b92d51bb

Unpacked files

SH256 hash:

6a4fbba9403d7c9c5f9f0be2172c284eacd540a4018049078bf7be1889ec0c99

MD5 hash:

f358e8e50868cf48d6f429fbe5348773

SHA1 hash:

610e63279f6811b43f4f209c94df7c9608f4ac70

Link:

https://www.unpac.me/results/a73e052a-ded1-4e92-afba-8d8fb085f42f/

SH256 hash:

3fc71269bc8837efd36893c8678c9282b895c767eb01133cb04d5323ce9ff8af

MD5 hash:

0bbdd6ad0f40e48d23e76b8401e08946

SHA1 hash:

c6ee59c2a702989eac93ce97c7f407df902f323d

Link:

https://www.unpac.me/results/a73e052a-ded1-4e92-afba-8d8fb085f42f/

SH256 hash:

2d0f339b2ba646b433c265e998e9d18108cd6aa865e5ea5dae89da5ca1adc3ef

MD5 hash:

f4ed5ff7d9773ca8a3b379b4368935a3

SHA1 hash:

4cfe68480392ceee9287f3f5dbc406d8dd7eed29

Detections:

GCleaner

Link:

https://www.unpac.me/results/a73e052a-ded1-4e92-afba-8d8fb085f42f/

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/6a4fbba9403d7c9c5f9f0be2172c284eacd540a4018049078bf7be1889ec0c99

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:	Borland Create hunting rule
Author:	malware-lu

Rule name:	Check_OutputDebugStringA_iat Create hunting rule

Rule name:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	command_and_control Create hunting rule
Author:	CD_R0M_
Description:	This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerCheck__QueryInfo Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerException__ConsoleCtrl Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DetectGoMethodSignatures Create hunting rule
Author:	Wyatt Tauber
Description:	Detects Go method signatures in unpacked Go binaries

Rule name:	GoBinTest Create hunting rule

Rule name:	golang Create hunting rule

Rule name:	Golangmalware Create hunting rule
Author:	Dhanunjaya
Description:	Malware in Golang

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

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	HiveRansomware Create hunting rule
Author:	Dhanunjaya
Description:	Yara Rule To Detect Hive V4 Ransomware

Rule name:	identity_golang Create hunting rule
Author:	Eric Yocam
Description:	find Golang malware

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	pe_detect_tls_callbacks Create hunting rule

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:	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:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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

Rule name:	Windows_Generic_Threat_23d33b48 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

GCleaner

exe 6a4fbba9403d7c9c5f9f0be2172c284eacd540a4018049078bf7be1889ec0c99

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3452050/

Delivery method

Distributed via web download

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_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high
CHECK_NX	Missing Non-Executable Memory Protection	critical

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