MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0b51f3120c7d31f504bd67b8bc8e9f41ca580b77bbf3a2aaa257bb1232d31073. 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

Arechclient2

Vendor detections: 13

Intelligence 13 IOCs YARA 5 File information Comments

SHA256 hash:	0b51f3120c7d31f504bd67b8bc8e9f41ca580b77bbf3a2aaa257bb1232d31073
SHA3-384 hash:	7974478dc04abd1ed0218f997f3ed4916f569db5c381d3024064f12aa365b51e868b6e73efcfdce2d30d137524c0ec3b
SHA1 hash:	9ee240c069604d8591666f5a22382530d7cd111f
MD5 hash:	5a3ef9924dc137f975a13aa4d131c492
humanhash:	autumn-mike-pennsylvania-thirteen
File name:	5a3ef9924dc137f975a13aa4d131c492.exe
Download:	download sample
Signature	Arechclient2 Create hunting rule
File size:	485'377 bytes
First seen:	2024-04-23 11:46:40 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	c9619f19f41ef1b7d232f47cfbcc330b (11 x Stealc, 4 x Arechclient2)
ssdeep	6144:dYGgupEJ12YQcP55RYd85n4roeyk5FNP0Pz1BHF+hzxYaE1ccq:dYGgupEJ1brP5si5Iyk5wXQYnBq
TLSH	T1B1A4C00372F0AC60E5622A319F2BB69C669FFD51DE11572B2E08610F66703E0F6A375D
TrID	67.1% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 12.2% (.EXE) Win64 Executable (generic) (10523/12/4) 5.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 5.2% (.EXE) Win32 Executable (generic) (4504/4/1) 2.4% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):
dhash icon	03010b0311212100 (2 x Stealc, 1 x Arechclient2)
Reporter	abuse_ch
Tags:	Arechclient2 exe

abuse_ch

Arechclient2 C2:
http://185.172.128.76/3cd2b41cbde8fc9c.php

Intelligence

File Origin

# of uploads :

# of downloads :

436

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

0b51f3120c7d31f504bd67b8bc8e9f41ca580b77bbf3a2aaa257bb1232d31073.zip

Verdict:

Malicious activity

Analysis date:

2024-04-23 13:55:41 UTC

Tags:

gcleaner loader stealer stealc

Link:

https://app.any.run/tasks/08dbf1ad-a7d7-42dc-84cd-c556e571e66d

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending an HTTP GET request to an infection source

Creating a file in the %temp% directory

Сreating synchronization primitives

Creating a process from a recently created file

DNS request

Connection attempt

Sending an HTTP GET request

Connecting to a non-recommended domain

Running batch commands

Creating a process with a hidden window

Launching a process

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Connection attempt to an infection source

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

fingerprint overlay packed

Link:

https://www.filescan.io/uploads/66279fb847bfd8641eb3475b/reports/99500afe-0ed4-4cca-a791-2ba0a9467e06/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/0b51f3120c7d31f504bd67b8bc8e9f41ca580b77bbf3a2aaa257bb1232d31073

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:

Stealc

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/f9e0450f-ef52-464e-b6ba-474df16fc378

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1430312

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Detected unpacking (changes PE section rights)

Detected unpacking (overwrites its own PE header)

Found evasive API chain (may stop execution after checking locale)

Found malware configuration

Found many strings related to Crypto-Wallets (likely being stolen)

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

Searches for specific processes (likely to inject)

Snort IDS alert for network traffic

Tries to harvest and steal Bitcoin Wallet information

Tries to harvest and steal browser information (history, passwords, etc)

Tries to harvest and steal ftp login credentials

Tries to steal Crypto Currency Wallets

Tries to steal Mail credentials (via file / registry access)

Yara detected Mars stealer

Yara detected Stealc

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/0b51f3120c7d31f504bd67b8bc8e9f41ca580b77bbf3a2aaa257bb1232d31073/

Threat name:

Win32.Trojan.Stealerc

Status:

Malicious

First seen:

2024-04-23 09:11:07 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

30 of 38 (78.95%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=bni7geqmpuy7kbf5m64lzdu7ihffqc3xxpz2fkvck65remwtcbzq._file

Verdict:

malicious

Result

Malware family:

zgrat

Score:

10/10

Tags:

family:sectoprat family:stealc family:zgrat rat stealer trojan

Link:

https://tria.ge/reports/240423-nxvrdsfh3y/

Behaviour

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Program crash

Suspicious use of SetThreadContext

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Downloads MZ/PE file

Detect ZGRat V1

SectopRAT

SectopRAT payload

Stealc

ZGRat

Unpacked files

SH256 hash:

024375d3b85d8e205499bb5c1d5eb6c01d40ddb5dbdd36872c2ffef49a00e4b6

MD5 hash:

39f0b2bc2ef3b029217043cb4d0028c4

SHA1 hash:

2eb04d8f4d156c96c280f0f2e498162a7660ea54

Link:

https://www.unpac.me/results/dc1fd67f-3f4f-42e5-aada-e7553a043238/

SH256 hash:

0b51f3120c7d31f504bd67b8bc8e9f41ca580b77bbf3a2aaa257bb1232d31073

MD5 hash:

5a3ef9924dc137f975a13aa4d131c492

SHA1 hash:

9ee240c069604d8591666f5a22382530d7cd111f

Link:

https://www.unpac.me/results/dc1fd67f-3f4f-42e5-aada-e7553a043238/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/0b51f3120c7d/report/overview.html

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

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

Rule name:	EXE_Stealer_StealC_Feb2024 Create hunting rule
Author:	Yashraj Solanki - Cyber Threat Intelligence Analyst at Bridewell

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

Rule name:	Windows_Trojan_Generic_2993e5a5 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

Arechclient2

exe 0b51f3120c7d31f504bd67b8bc8e9f41ca580b77bbf3a2aaa257bb1232d31073

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/2813846/

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
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetVolumeInformationA KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::AddConsoleAliasW KERNEL32.dll::AddConsoleAliasA KERNEL32.dll::WriteConsoleA KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleInputW KERNEL32.dll::SetStdHandle
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateHardLinkA KERNEL32.dll::CreateFileW KERNEL32.dll::GetWindowsDirectoryW KERNEL32.dll::RemoveDirectoryW
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::GetComputerNameA
WIN_HTTP_API	Uses HTTP services	WINHTTP.dll::WinHttpConnect

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