MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277. 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: 15

Intelligence 15 IOCs YARA 9 File information Comments 1

SHA256 hash:	748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277
SHA3-384 hash:	c8f8e5b7a622814d787013e758a1361aecf2c614698628641d4502479f52fab0196f9f9d28e995bb9249251032084291
SHA1 hash:	026eff85b267da853dac6cc00866bd1cb1c02c4d
MD5 hash:	eda757c6ae24693068781c06550cb3a6
humanhash:	maryland-apart-early-jig
File name:	eda757c6ae24693068781c06550cb3a6
Download:	download sample
Signature	Stealc Create hunting rule
File size:	235'008 bytes
First seen:	2024-03-08 18:51:46 UTC
Last seen:	2024-03-08 20:25:59 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	59c8dd4ac2c97748fa2f414e5bacf8da (1 x Stealc)
ssdeep	6144:/4qdvcItHrBhjlf6R05be5BlXE0tvi7DDu:BRcItHNCR05Sji0UPu
Threatray	19 similar samples on MalwareBazaar
TLSH	T1E934BF1922B6ACF1F9663D7049B2C6E01AEEFD425734069B1254293F5EB07D04A7E33E
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	d2f0e4c4e4f9c6f9 (9 x Stealc, 2 x LummaStealer, 2 x RedLineStealer)
Reporter	zbetcheckin
Tags:	32 exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

321

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277.exe

Verdict:

Malicious activity

Analysis date:

2024-03-08 18:55:32 UTC

Tags:

stealer stealc

Link:

https://app.any.run/tasks/455b9793-c8f1-466f-9934-172b23b378f8

Note:

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

Detection(s):

SecuriteInfo.com.Win32.Evo-gen.31009.10946.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Connection attempt to an infection source

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Link:

https://www.filescan.io/uploads/65eb5e551d6034c3c029c86f/reports/66eee762-0bd9-4081-8028-e41e9c3265ae/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277

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/3e04bd9d-1d91-4af2-9ee1-1bb1431e13b8

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

phis.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1405586

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 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/748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2024-03-08 18:00:54 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=osdth33lgumoygfmx5ukh6t7ipsag44kfgrhlvwlfx4oq6cryj3q._file

Verdict:

malicious

Stealc

58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608

Stealc

6505124e089a5b658c16cc831297438239ad47a3b06a1e817880fb7edd19a1ef

Stealc

8ad20c4b4c312feb468a58d1748c0d7abba3dd2d0fb8e6bfbee837c47a0e8c5a

Stealc

9643edaedb1e0b2075c9d608e12477727015706f3fe670283d84fb7dae49c88d

Stealc

a863912b539cb57887b41e05ac11e17298bac7565c6c715b33fe287590848d5d

Stealc

e5be6b01b31232f0ec0059be780fd0c20cea2d8e0450c9ed30dbe8e5b789d21a

Stealc

+ 9 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

8/10

Tags:

discovery spyware stealer

Link:

https://tria.ge/reports/240308-xh2qtseg3z/

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

Unpacked files

SH256 hash:

dc652095b56a5692c5f632c69ecd2ad567e149f0954140afb13d12bcb06368f4

MD5 hash:

901c77d2269ae75fc795a175e18324a1

SHA1 hash:

7ddc250d385bc0fe58e1ba68b21736ff306ec8a2

Detections:

win_stealc_auto

Link:

https://www.unpac.me/results/4889d5d6-db8a-4a96-9a1a-4f06843ea083/

Parent samples :
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SH256 hash:

748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277

MD5 hash:

eda757c6ae24693068781c06550cb3a6

SHA1 hash:

026eff85b267da853dac6cc00866bd1cb1c02c4d

Link:

https://www.unpac.me/results/4889d5d6-db8a-4a96-9a1a-4f06843ea083/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/748733ef6b35/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/748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277

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_Smokeloader_3687686f 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 748733ef6b3518ec18acbf68a3fa7f43e403738a29a275d6cb2df8e87851c277

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2749139/

URLhaus

https://urlhaus.abuse.ch/url/2755131/

URLhaus

https://urlhaus.abuse.ch/url/2775151/

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
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleOutputCharacterW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleAliasExesLengthW
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateHardLinkA KERNEL32.dll::GetFileAttributesW

Comments

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zbet commented on 2024-03-08 18:51:47 UTC

url : hxxp://185.172.128.127/syncUpd.exe