MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41. 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 10 File information Comments 1

SHA256 hash:	c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41
SHA3-384 hash:	184db49628a8e9e207719d9df898899223489daf856d382438a753f1b9e7daade9ec8094e25cae70eb6941c1fa6fd3cf
SHA1 hash:	3d98fff19ff36e1bb307e885bc22bf7d2e84e941
MD5 hash:	f9f0b2b6c628789336ab905f82269982
humanhash:	arizona-snake-charlie-berlin
File name:	f9f0b2b6c628789336ab905f82269982
Download:	download sample
Signature	Stealc Create hunting rule
File size:	258'560 bytes
First seen:	2024-04-25 19:46:52 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	3ae61081ee7e6f8cf29cd8863eab3a8f (1 x Stealc)
ssdeep	3072:4+4W37COtvSDvqsAeDU4emOilhqdv8WRMWh8U5qQYMRCP:48rUqSemydvVSDuE
TLSH	T12144CF117A62F472FAA784704938C6A75B3A7D715AB4C18BF65C1B2F0F716C08F26362
TrID	46.6% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 25.2% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 8.5% (.EXE) Win64 Executable (generic) (10523/12/4) 5.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):
dhash icon	64d29a98a9a98989 (1 x Stealc)
Reporter	zbetcheckin
Tags:	32 exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

347

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41.exe

Verdict:

Malicious activity

Analysis date:

2024-04-25 19:47:06 UTC

Tags:

stealer stealc

Link:

https://app.any.run/tasks/93d059a7-a5dc-41f5-8856-f61e03d40f68

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

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

Sending an HTTP GET request to an infection source

Verdict:

No Threat

Threat level:

10/10

Confidence:

100%

Tags:

fingerprint

Link:

https://www.filescan.io/uploads/662ab33614ba3ce8289a854a/reports/454058df-ce14-4a63-8ea1-d9e1525df658/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41

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/4a6d7be5-7631-4ba8-8a9d-773e22bda667

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1431855

Signature

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 evasive API chain (may stop execution after checking mutex)

Found malware configuration

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

Found stalling execution ending in API Sleep call

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

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

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41/

Threat name:

Win32.Spyware.Stealc

Status:

Malicious

First seen:

2024-04-25 19:47:04 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ym54ofh4blzcomkxvtkixyajw6dxilzhch6w2x4b7qgiljkkjzaq._file

Verdict:

malicious

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc stealer

Link:

https://tria.ge/reports/240425-yhhtdsdh7v/

Behaviour

Program crash

Stealc

Unpacked files

SH256 hash:

bd631d087623e1fb75987ae145f184492b89b830c5e534b6366669e4634cde00

MD5 hash:

0956468d63ded2563c664339a96a0841

SHA1 hash:

1ade9ea34298742d6f75b439aec37e108b405a5b

Detections:

stealc

win_stealc_auto

Link:

https://www.unpac.me/results/17e88e30-6b44-4ffb-a47c-2a4b7ab3130b/

Parent samples :
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SH256 hash:

c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41

MD5 hash:

f9f0b2b6c628789336ab905f82269982

SHA1 hash:

3d98fff19ff36e1bb307e885bc22bf7d2e84e941

Link:

https://www.unpac.me/results/17e88e30-6b44-4ffb-a47c-2a4b7ab3130b/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/c33bc714fc0a/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/c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41

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

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:	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 c33bc714fc0af2273157acd48be009b787742f2711fd6d5f81fc0c85a54a4e41

(this sample)

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::SetFirmwareEnvironmentVariableW KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetVolumeInformationW KERNEL32.dll::GetStartupInfoA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleA KERNEL32.dll::WriteConsoleW KERNEL32.dll::SetConsoleDisplayMode KERNEL32.dll::SetConsoleTitleA KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleAliasExesLengthA KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateFileA

Comments

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zbet commented on 2024-04-25 19:46:53 UTC

url : hxxp://185.172.128.59/syncUpd.exe