MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede. 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 11 File information Comments

SHA256 hash:	6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede
SHA3-384 hash:	8e9eac8e6769ecd12ba08b40ca268cfe95a02aefd227f7730d4a3078a9f51a8b55b5cb2a6ed27202872c54cab8ccae14
SHA1 hash:	21d28b0ab6e38421c7e3e4c11999329c7adcc645
MD5 hash:	77a256c54a00e5a69f66e5a093f8ed30
humanhash:	uranus-high-apart-pluto
File name:	SecuriteInfo.com.Win32.Malware-gen.24694.6353
Download:	download sample
Signature	Stealc Create hunting rule
File size:	2'009'600 bytes
First seen:	2024-05-17 21:22:51 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	c8c586524a23d4cd74a160dfb541091f (5 x Stealc)
ssdeep	24576:qH7t22yv9gVwa4w1v8QWgW2pNX0fqk27NoFo3t4aO78KLHidAp:q4jv918V8QC2jiqkumct498KLHi
Threatray	21 similar samples on MalwareBazaar
TLSH	T16895D023A0A378B2C076CE7988565E9885297D733D14DC492AE41FD8CF7A3D13B26397
TrID	68.7% (.EXE) Win32 Executable Borland Delphi 7 (664796/42/58) 27.1% (.EXE) Win32 Executable Borland Delphi 6 (262638/61) 1.4% (.EXE) Win32 Executable Delphi generic (14182/79/4) 1.3% (.SCR) Windows screen saver (13097/50/3) 0.4% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):
dhash icon	3c64ccfcecf8e8ec (17 x Stealc, 3 x Vidar, 1 x ArkeiStealer)
Reporter	SecuriteInfoCom
Tags:	exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

375

Origin country :

Vendor Threat Intelligence

Malware family:

vidar

ID:

File name:

6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede.exe

Verdict:

Malicious activity

Analysis date:

2024-05-17 21:23:48 UTC

Tags:

telegram stealer vidar stealc

Link:

https://app.any.run/tasks/d3f0c9db-54f6-45ec-8d6d-453d3e6a2e72

Note:

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

Detection(s):

SecuriteInfo.com.Win32.Malware-gen.24694.6353.UNOFFICIAL

Gathering data

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Creating a window

Searching for synchronization primitives

Creating a file in the %temp% directory

Creating a process from a recently created file

Behavior that indicates a threat

DNS request

Connection attempt

Sending a custom TCP request

Sending an HTTP GET request

Using the Windows Management Instrumentation requests

Running batch commands

Creating a process with a hidden window

Launching a process

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

fingerprint keylogger masquerade vidar

Link:

https://www.filescan.io/uploads/6647cabbd7fb0506c93b68fc/reports/e6524371-8c9d-491f-af50-690e9a74fb44/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede

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:

Vidar

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/edabad8d-f4ab-4686-8610-2faafff351a1

Result

Threat name:

CryptOne, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1443530

Signature

Allocates memory in foreign processes

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to inject code into remote processes

Detected unpacking (creates a PE file in dynamic memory)

Found malware configuration

Injects a PE file into a foreign processes

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sample uses process hollowing technique

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Tries to harvest and steal browser information (history, passwords, etc)

Writes to foreign memory regions

Yara detected AntiVM3

Yara detected CryptOne packer

Yara detected Powershell download and execute

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Score:

94%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede/

Threat name:

Win32.Trojan.Privateloader

Status:

Malicious

First seen:

2024-05-17 20:40:59 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

19 of 24 (79.17%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=n36zbpczih7lctpnlrbrx56bz4lz6kgejguers34cq2myt5od3pa._file

Verdict:

malicious

Stealc

744eddd9b4b8158a0ae22a864deb7c5a9741d192b2dc08eeaa54133fe5c328c4

Stealc

928b41b877a3c51a26431c21a478b8c4a9ce75cd02fb22fe2432847a13beaf1f

Stealc

acf2a71cba2dc40faf0c8a9a63189beb1cfd5a3601a202b02101cd7b69ec34e8

Stealc

df627184bb78e33980b55662e826fb3b6f4550efa2dc0eb20260f348cb150251

Stealc

+ 11 additional samples on MalwareBazaar

Result

Malware family:

vidar

Score:

10/10

Tags:

family:stealc family:vidar discovery spyware stealer

Link:

https://tria.ge/reports/240517-z8fmdsbf7t/

Behaviour

Checks processor information in registry

Delays execution with timeout.exe

Modifies system certificate store

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Downloads MZ/PE file

Detect Vidar Stealer

Stealc

Vidar

Unpacked files

SH256 hash:

da1cd99750350463d511933c52a88f4062b7957b64c7ad2ac31c500ec3ff8222

MD5 hash:

4848935d8c2d63c8e84e6a440f6017d4

SHA1 hash:

67bc530dda6ec54b5cc24adc5ee16f1d49e323ab

Detections:

VidarStealer

win_stealc_a0

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Link:

https://www.unpac.me/results/9d0244e5-1ab2-4d87-bd42-6d1c5c61a79d/

SH256 hash:

6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede

MD5 hash:

77a256c54a00e5a69f66e5a093f8ed30

SHA1 hash:

21d28b0ab6e38421c7e3e4c11999329c7adcc645

Link:

https://www.unpac.me/results/9d0244e5-1ab2-4d87-bd42-6d1c5c61a79d/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Legit

Score:

0.16

Link:

https://yomi.yoroi.company/submissions/6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede

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:	BitcoinAddress Create hunting rule
Author:	Didier Stevens (@DidierStevens)
Description:	Contains a valid Bitcoin address

Rule name:	BobSoftMiniDelphiBoBBobSoft Create hunting rule
Author:	malware-lu

Rule name:	Borland Create hunting rule
Author:	malware-lu

Rule name:	Check_Dlls Create hunting rule

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

Rule name:	has_telegram_urls Create hunting rule
Author:	Aaron DeVera<aaron@backchannel.re>
Description:	Detects Telegram URLs

Rule name:	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA Create hunting rule
Author:	ditekSHen
Description:	Detects Windows executables referencing non-Windows User-Agents

Rule name:	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL Create hunting rule
Author:	ditekSHen
Description:	Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

Rule name:	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing potential Windows Defender anti-emulation checks

Rule name:	shellcode Create hunting rule
Author:	nex
Description:	Matched shellcode byte patterns

Rule name:	Windows_Generic_Threat_c374cd85 Create hunting rule
Author:	Elastic Security

File information

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

Web download

Stealc

exe 6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/2852567/

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_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 kernel32.dll::CreateThread
WIN_BASE_API	Uses Win Base API	kernel32.dll::LoadLibraryExA kernel32.dll::LoadLibraryA kernel32.dll::GetSystemInfo kernel32.dll::GetStartupInfoA kernel32.dll::GetDiskFreeSpaceA kernel32.dll::GetCommandLineA
WIN_BASE_IO_API	Can Create Files	kernel32.dll::CreateFileA kernel32.dll::DeleteFileA kernel32.dll::FindFirstFileA kernel32.dll::GetTempPathA version.dll::GetFileVersionInfoSizeA version.dll::GetFileVersionInfoA
WIN_REG_API	Can Manipulate Windows Registry	advapi32.dll::RegOpenKeyExA advapi32.dll::RegQueryValueExA
WIN_USER_API	Performs GUI Actions	user32.dll::ActivateKeyboardLayout user32.dll::CreateMenu user32.dll::FindWindowA user32.dll::PeekMessageA user32.dll::CreateWindowExA

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