MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae. 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 12 File information Comments

SHA256 hash:	34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae
SHA3-384 hash:	2d6efa6161a27528b97c734fa6eeda9a8062a9787e92087328c5fbf223e59fe71e88700b9b58acc7c0a1233bf11741bc
SHA1 hash:	b04f4b4c712a0b95b570e4c1b3bab26500a42eb6
MD5 hash:	6fa4f14d89259a3ddd6fafeee57c0d64
humanhash:	juliet-tennessee-stairway-angel
File name:	6fa4f14d89259a3ddd6fafeee57c0d64.exe
Download:	download sample
Signature	Stealc Create hunting rule
File size:	264'704 bytes
First seen:	2024-03-28 20:20:13 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	e87c9c66e32f791de60bd46f1df17fc3 (1 x Smoke Loader, 1 x Stealc, 1 x GCleaner)
ssdeep	6144:ADb2OudtR+Ekpr625czhXfKZo9cKovAkOYqQ:ad+tR+NQoczhiUczvALYqQ
TLSH	T1A944BE1276E1D675F6F306324C749A840A3FFCB39AB5968B33992A4E1D712C04F25B63
TrID	47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):
dhash icon	020604070a183000 (1 x Stealc)
Reporter	abuse_ch
Tags:	exe Stealc

abuse_ch

Stealc C2:
http://193.233.132.241/e64f36763e423a50.php

Intelligence

File Origin

# of uploads :

# of downloads :

580

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae.exe

Verdict:

Malicious activity

Analysis date:

2024-03-28 20:20:55 UTC

Tags:

stealer stealc

Link:

https://app.any.run/tasks/42613d7e-53ff-4b53-8060-334285148227

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

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Creating a window

Connection attempt to an infection source

Verdict:

No Threat

Threat level:

10/10

Confidence:

100%

Tags:

fingerprint

Link:

https://www.filescan.io/uploads/6605d135aeca3665d3b27ecf/reports/d927ae7e-9a23-41d8-900d-ea91757f7e1d/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae

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/1866cdbe-2a72-4c12-a615-6bfd54db3c7d

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1417288

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)

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/34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae/

Threat name:

Win32.Ransomware.Stopcrypt

Status:

Malicious

First seen:

2024-03-28 20:21:06 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=gtcxquhz7f74uui3wlbxcyai7hvbrmrpt2y6y7624dkhvohzp2xa._file

Verdict:

malicious

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc discovery spyware stealer

Link:

https://tria.ge/reports/240328-y4zc9sff7w/

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

Malware Config

C2 Extraction:

http://193.233.132.241

Unpacked files

SH256 hash:

c38f8ce9a0c6b5d091eb736312627507aa1dfe1ec16cf82effd2c23be1395078

MD5 hash:

1c684082864af787db66e966e27f9531

SHA1 hash:

a2122ab11ca6fb3e7a8240ad85820f03b6790a5e

Detections:

stealc

win_stealc_auto

Link:

https://www.unpac.me/results/9214d55b-0341-431a-b609-e1b46f4ece3e/

Parent samples :

7c8f7e7e7ab86868b082d4c21bf4d02da7c337719c143cc606dadc2cede8c04e
34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae

SH256 hash:

34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae

MD5 hash:

6fa4f14d89259a3ddd6fafeee57c0d64

SHA1 hash:

b04f4b4c712a0b95b570e4c1b3bab26500a42eb6

Link:

https://www.unpac.me/results/9214d55b-0341-431a-b609-e1b46f4ece3e/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/34c57850f9f9/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/34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae

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:	DebuggerException__SetConsoleCtrl 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:	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 34c57850f9f97fca511bb2c3716008f9ea18b22f9eb1ec7fdae0d47ab8f97eae

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/2756618/

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_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::FindFirstVolumeMountPointW KERNEL32.dll::FindNextVolumeW KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetVolumeInformationW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::PeekConsoleInputA KERNEL32.dll::ReadConsoleA KERNEL32.dll::SetConsoleCtrlHandler KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleAliasesLengthA KERNEL32.dll::GetConsoleAliasW KERNEL32.dll::GetConsoleAliasExesLengthA KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateFileW KERNEL32.dll::GetWindowsDirectoryA KERNEL32.dll::RemoveDirectoryA
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::QueryDosDeviceW

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