MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a. 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

Stealc

Vendor detections: 16

Intelligence 16 IOCs YARA 13 File information Comments 1

SHA256 hash:	4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a
SHA3-384 hash:	581c32f52c7d716c5b83ef906fd2fe9adba1a8042af7ced0bd0f252214a9849dec579e0ae1499badaba571a9430c5ec6
SHA1 hash:	c63bb487f778e84c0cf14e909272ca34dc201731
MD5 hash:	7ccdc641efe0d68558816f1f7f3487a9
humanhash:	single-foxtrot-thirteen-hotel
File name:	7ccdc641efe0d68558816f1f7f3487a9
Download:	download sample
Signature	Stealc Create hunting rule
File size:	311'296 bytes
First seen:	2024-04-15 13:36:11 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	ec4b404d0de4b3477a6cb59791522c47 (1 x Stealc)
ssdeep	6144:IeNCtWxtkZlLB7HMkCaOodcpl9hAQJOu8a:IsEWXkzt7HMkCafKcQJU
TLSH	T1B7648D0272E168F0F67346324EAD8EA066FEFDB15E599F5B23CC491F05700A1D626B63
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	080818280a0b0600 (1 x Stealc)
Reporter	zbetcheckin
Tags:	32 exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

294

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a.exe

Verdict:

Malicious activity

Analysis date:

2024-04-15 13:49:33 UTC

Tags:

stealer stealc

Link:

https://app.any.run/tasks/4ed28fb3-26f9-400d-b1c0-2c3881ecfd1c

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Running batch commands

Creating a process with a hidden window

Launching a process

Launching the default Windows debugger (dwwin.exe)

Connection attempt to an infection source

Sending an HTTP GET request to an infection source

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

fingerprint

Link:

https://www.filescan.io/uploads/661d2d8054bafb7d21cd329a/reports/1360ad7c-07b0-45d6-b0cd-7a4d9c48ae95/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a

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/c4f3ddd7-db42-4a5d-bdcf-2fa477502a81

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

phis.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1426127

Signature

Antivirus / Scanner detection for submitted sample

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 sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Overwrites Mozilla Firefox settings

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

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a/

Threat name:

Win32.Spyware.Stealc

Status:

Malicious

First seen:

2024-04-15 13:37:05 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

18 of 24 (75.00%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ji3hknub2p4fggvmt2qpunr2gcu7giyhaok2df7vpgszlrcffbfa._file

Verdict:

malicious

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc discovery spyware stealer

Link:

https://tria.ge/reports/240415-qwsxhshh6y/

Behaviour

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Program crash

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Loads dropped DLL

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Downloads MZ/PE file

Stealc

Unpacked files

SH256 hash:

b52bd484795f9b6427bd063c9dd50893474c1ee01d040fb6ff66063ebef7a77d

MD5 hash:

2eae5f367455c809a7888a3072dde2a2

SHA1 hash:

5e76ff05a8e2503e362b8b3db2e1189eb0b9240e

Detections:

stealc

win_stealc_auto

Link:

https://www.unpac.me/results/ef75d885-7a39-4eab-8a06-9421f7106bad/

Parent samples :
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SH256 hash:

4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a

MD5 hash:

7ccdc641efe0d68558816f1f7f3487a9

SHA1 hash:

c63bb487f778e84c0cf14e909272ca34dc201731

Link:

https://www.unpac.me/results/ef75d885-7a39-4eab-8a06-9421f7106bad/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/4a36753681d3/report/overview.html

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/4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a

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

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

Rule name:	detect_Mars_Stealer Create hunting rule
Author:	@malgamy12
Description:	detect_Mars_Stealer

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

Rule name:	infostealer_win_stealc_standalone Create hunting rule
Description:	Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:	https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/

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

Rule name:	malware_Stealc_str Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	Stealc infostealer

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

Rule name:	Windows_Trojan_Generic_2993e5a5 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_Stealc_b8ab9ab5 Create hunting rule
Author:	Elastic Security

Rule name:	win_stealc_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.stealc.

Rule name:	win_stealc_w0 Create hunting rule
Author:	crep1x
Description:	Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:	https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/

File information

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

Web download

Stealc

exe 4a36753681d3f8531aac9ea0fa363a30a9f323070395a197f579a595c445284a

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2754939/

URLhaus

https://urlhaus.abuse.ch/url/2812849/

URLhaus

https://urlhaus.abuse.ch/url/2810818/

URLhaus

https://urlhaus.abuse.ch/url/2793509/

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_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::VirtualAllocEx KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::FindNextVolumeA KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetVolumeInformationW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleInputA KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleInputA KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleAliasExesLengthA KERNEL32.dll::GetConsoleAliasA KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileA KERNEL32.dll::CreateHardLinkA KERNEL32.dll::CreateFileW KERNEL32.dll::GetWindowsDirectoryW KERNEL32.dll::RemoveDirectoryA
WIN_HTTP_API	Uses HTTP services	WINHTTP.dll::WinHttpReadData

Comments

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zbet commented on 2024-04-15 13:36:12 UTC

url : hxxp://185.172.128.203/dl.php