MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608. 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: 14

Intelligence 14 IOCs YARA 9 File information Comments 1

SHA256 hash:	58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608
SHA3-384 hash:	ba5ceba9183e234d8251304032e3da079ef33cd04f3648432318c91bc4690e60557aa191f4fd00c02db52926166a8bff
SHA1 hash:	2cad943820e8b6bc2f7ed89ae943518f051000a5
MD5 hash:	02973a41a79b53aa831fc27fef4a5c76
humanhash:	white-stairway-tennessee-lamp
File name:	02973a41a79b53aa831fc27fef4a5c76
Download:	download sample
Signature	Stealc Create hunting rule
File size:	237'568 bytes
First seen:	2024-03-03 18:26:01 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	ede9c6017633125bea7e6d7ae9914f6b (1 x Stealc)
ssdeep	3072:j21CTVWKayMVZuZDoWco+TJsT2kYdklWYyl+HQt35e44sDYk:YYWKaJaZDj+tJkYq4R4HQC44qY
TLSH	T1F334C02176E1C072C97B4539A4A1CAF06F7BF8715BA0C15B37181B6E9EE07D08E3A356
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	0004084804244801 (1 x Stealc)
Reporter	zbetcheckin
Tags:	32 exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

363

Origin country :

Vendor Threat Intelligence

Detection(s):

Win.Packer.pkr_ce1a-9980177-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Connecting to a non-recommended domain

Connection attempt

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

fingerprint packed

Link:

https://www.filescan.io/uploads/65e4c0c306b24253d235e0a8/reports/593002c7-daf8-4cf7-ac2b-3cc79176b230/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608

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/4e5ce3a0-0e5d-411e-8b0b-198be943fc6e

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1402204

Signature

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)

Searches for specific processes (likely to inject)

Self deletion via cmd or bat file

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/58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608/

Threat name:

Win32.Spyware.Stealc

Status:

Malicious

First seen:

2024-03-03 18:27:05 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=lcly5xx6nb5ipeaucwbtcolcvnrhv35kwity5hndvh52ou6nwyea._file

Verdict:

malicious

Result

Malware family:

n/a

Score:

8/10

Tags:

discovery spyware stealer

Link:

https://tria.ge/reports/240303-w26y8aea71/

Behaviour

Checks processor information in registry

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Program crash

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Checks computer location settings

Deletes itself

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/aa9809a4-43d4-414f-9a6f-4f33498634b1/

Parent samples :
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SH256 hash:

58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608

MD5 hash:

02973a41a79b53aa831fc27fef4a5c76

SHA1 hash:

2cad943820e8b6bc2f7ed89ae943518f051000a5

Link:

https://www.unpac.me/results/aa9809a4-43d4-414f-9a6f-4f33498634b1/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/58978edefe68/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/58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608

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 58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608

(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
MULTIMEDIA_API	Can Play Multimedia	GDI32.dll::StretchDIBits
SHELL_API	Manipulates System Shell	SHELL32.dll::FindExecutableA
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::FindNextVolumeMountPointW KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetVolumeInformationA KERNEL32.dll::GetStartupInfoA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::AddConsoleAliasW KERNEL32.dll::WriteConsoleInputA KERNEL32.dll::WriteConsoleA KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::ReadConsoleInputW
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateDirectoryA KERNEL32.dll::CreateFileA KERNEL32.dll::GetWindowsDirectoryW KERNEL32.dll::RemoveDirectoryW
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::GetComputerNameW
WIN_HTTP_API	Uses HTTP services	WINHTTP.dll::WinHttpOpen

Comments

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zbet commented on 2024-03-03 18:26:02 UTC

url : hxxp://185.172.128.187/syncUpd.exe