MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538. 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: 14

Intelligence 14 IOCs YARA 5 File information Comments 1

SHA256 hash:	a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538
SHA3-384 hash:	8f58413cff4d15f7c210a431f80ad032dde1d2fca544d08141593159dc24785fa3ecc820c30fb8c424a7333332b725b8
SHA1 hash:	f37e1adf38fe90e4449bd31d7ead3af3678c9af1
MD5 hash:	224598916fe737df40b20093943ac879
humanhash:	river-twelve-blue-pasta
File name:	224598916fe737df40b20093943ac879
Download:	download sample
Signature	GCleaner Create hunting rule
File size:	315'904 bytes
First seen:	2024-03-11 07:09:13 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	d56890d53749dde8bc65c65be68b457c (2 x Glupteba, 1 x Smoke Loader, 1 x Stealc)
ssdeep	6144:k6p1tshJDRM+odULu+enE1FFsaQTeyowr0y:k6+hXTodlyGaFyowrV
Threatray	12 similar samples on MalwareBazaar
TLSH	T11B64BE437AE0C475F2F707326832C9554A7FBE626E718A4B3388260E7D742D19E72762
TrID	37.3% (.EXE) Win64 Executable (generic) (10523/12/4) 17.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 15.9% (.EXE) Win32 Executable (generic) (4504/4/1) 7.3% (.ICL) Windows Icons Library (generic) (2059/9) 7.1% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):
dhash icon	101a1a0820504000 (1 x GCleaner)
Reporter	zbetcheckin
Tags:	32 exe gcleaner

Intelligence

File Origin

# of uploads :

# of downloads :

346

Origin country :

Vendor Threat Intelligence

Malware family:

stop

ID:

File name:

a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538.exe

Verdict:

Malicious activity

Analysis date:

2024-03-11 07:11:56 UTC

Tags:

gcleaner loader opendir vodkagats ransomware stop djvu

Link:

https://app.any.run/tasks/8a664e3a-e867-4cec-80ad-337bce89a5f6

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/478478/

Detection(s):

Win.Packer.pkr_ce1a-9980177-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Running batch commands

Creating a process with a hidden window

Using the Windows Management Instrumentation requests

Searching for the window

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Sending an HTTP GET request to an infection source

Connection attempt to an infection source

Launching a tool to kill processes

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-vm fingerprint lolbin shell32

Link:

https://www.filescan.io/uploads/65eeae4a5cd908a33dae582d/reports/2e09b507-a3ed-4982-be68-165e12c38a71/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538

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.

Malware family:

STOP Ransomware

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/719bc382-a280-4b9a-9180-8cf44cc84c82

Result

Threat name:

GCleaner

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1406352

Signature

Antivirus detection for URL or domain

Detected unpacking (changes PE section rights)

Detected unpacking (overwrites its own PE header)

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Snort IDS alert for network traffic

Yara detected GCleaner

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538/

Threat name:

Win32.Trojan.Privateloader

Status:

Malicious

First seen:

2024-03-11 07:10:06 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=uh3ocblrs7wqcmiyl4umgpqxk24dq56fyd7f2snzrim5rsj3su4a._file

Verdict:

malicious

GCleaner

d8fc9a7c6db8a578346d38375a467bdaec5e184149613bf7d1a4c5108ceb2b7c

GCleaner

d930ff3e1d83a347d05e9ccc86460e3ba2463a7284471081ff6c578ff5c6133a

GCleaner

edf1e3dcedbd126aab837c69aa8b81dd3767df139b0d17c1fafcac5a84627fa1

GCleaner

+ 2 additional samples on MalwareBazaar

Result

Malware family:

gcleaner

Score:

10/10

Tags:

family:gcleaner loader

Link:

https://tria.ge/reports/240311-hzdb8sfa7t/

Behaviour

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Program crash

Checks computer location settings

Deletes itself

GCleaner

Malware Config

C2 Extraction:

185.172.128.90
5.42.65.115

Unpacked files

SH256 hash:

110c64b4a03a6ed6c8ffd2baba0a5831fd8bd59ca6b23d6e885a8f34e13461fc

MD5 hash:

fa092cd96d9916f2e247067653cd1110

SHA1 hash:

b21b8b0914adc6d9c8a1d83e0ca0ddb83cd28d23

Link:

https://www.unpac.me/results/eca31765-dfbf-4eab-8cb7-5a57af856780/

Parent samples :
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SH256 hash:

a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538

MD5 hash:

224598916fe737df40b20093943ac879

SHA1 hash:

f37e1adf38fe90e4449bd31d7ead3af3678c9af1

Link:

https://www.unpac.me/results/eca31765-dfbf-4eab-8cb7-5a57af856780/

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/a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538

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

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

Rule name:	maldoc_find_kernel32_base_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	Windows_Generic_Threat_97c1a260 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_Smokeloader_3687686f 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 a1f6e1057197ed0131185f28c33e1756b83877c5c0fe5d49b98a19d8c93b9538

(this sample)

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/478478/

URLhaus

https://urlhaus.abuse.ch/url/2755475/

URLhaus

https://urlhaus.abuse.ch/url/2755494/

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
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
SHELL_API	Manipulates System Shell	SHELL32.dll::FindExecutableA
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::FindNextVolumeMountPointW KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetVolumeInformationW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::AddConsoleAliasW KERNEL32.dll::AttachConsole KERNEL32.dll::WriteConsoleA KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleInputW KERNEL32.dll::ReadConsoleW
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::GetWindowsDirectoryW KERNEL32.dll::RemoveDirectoryW

Comments

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zbet commented on 2024-03-11 07:09:14 UTC

url : hxxp://5.42.65.115/batushka/inte.exe