MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef. 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

SHA256 hash:	7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef
SHA3-384 hash:	b63dc7dadbdcc1219d2f5bfc529bf515d06275ca8b8ddc178cf80453afa30fb088e13844e2134b263a9bc799cc3de1c8
SHA1 hash:	3b98b0a6318bb6c2380ea1b5e5bb09bd3d2b3c78
MD5 hash:	574b039114c9ac13abe7739838cf52f9
humanhash:	spring-rugby-hotel-alanine
File name:	file
Download:	download sample
Signature	Stealc Create hunting rule
File size:	250'368 bytes
First seen:	2024-05-18 19:30:23 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	79c5a788fe0a654f1048125f626edccb (1 x Stealc)
ssdeep	3072:Xlbn7iQ/qZvCaV9eWyGgOleDVx059sY5RsJ5Z5o5Pbjkq/:XkQ/gV9eWyvOIDkR+0
Threatray	17 similar samples on MalwareBazaar
TLSH	T1DB34CF11AEE4A829D8178635DD2EC6F4671EBC61EFBCA6673204EA1F05F3DB1C522710
TrID	67.1% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 12.2% (.EXE) Win64 Executable (generic) (10523/12/4) 5.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 5.2% (.EXE) Win32 Executable (generic) (4504/4/1) 2.4% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):
dhash icon	2268c082e0f01118 (1 x Stealc)
Reporter	Bitsight
Tags:	exe Stealc

Bitsight

url: https://vk.com/doc5294803_669719518?hash=iPnTzbp1ukP5DqCzxkV3aHzhhGQofbDyD25lgcV9s58&dl=dosZ5ojYHsD1vbGv4j5GPKWgAzfMXD5ZqfAm5fv5ZYs&api=1&no_preview=1#build

Intelligence

File Origin

# of uploads :

# of downloads :

573

Origin country :

Vendor Threat Intelligence

Malware family:

vidar

ID:

File name:

7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef.exe

Verdict:

Malicious activity

Analysis date:

2024-05-18 19:33:29 UTC

Tags:

telegram stealer vidar stealc

Link:

https://app.any.run/tasks/5546cdfb-5e42-4c0e-a3ca-4d80a526174e

Note:

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

Detection(s):

Win.Packed.Fareit-10030127-0

Gathering data

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

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

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

fingerprint

Link:

https://www.filescan.io/uploads/664901ffeecf8de655e83e15/reports/4d347e0f-f3e0-420f-a7e8-743d2ac723d6/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef

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/dbfa5224-ad1c-44df-873a-ef1c09fd4675

Result

Threat name:

Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1443862

Signature

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Detected unpacking (changes PE section rights)

Detected unpacking (creates a PE file in dynamic memory)

Detected unpacking (overwrites its own PE header)

Found malware configuration

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Searches for specific processes (likely to inject)

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)

Yara detected AntiVM3

Yara detected Powershell download and execute

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef/

Threat name:

Win32.Trojan.SmokeLoader

Status:

Malicious

First seen:

2024-05-18 19:31:07 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ojl4dqmlqscx2edmt25hvezcf2cxtdrhb24zyimvh3hb5cuhtpxq._file

Verdict:

malicious

Stealc

6efd90bc5941feb14ded5c431bf7c1cf179f28c449a848cb7c1434cc4fae1ede

Stealc

ab59931fb0325a31ac86e463f06c01cbb8a8c8ad2f2512a19e84698af282900a

Stealc

df627184bb78e33980b55662e826fb3b6f4550efa2dc0eb20260f348cb150251

Stealc

e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2

Stealc

+ 7 additional samples on MalwareBazaar

Result

Malware family:

vidar

Score:

10/10

Tags:

family:stealc family:vidar discovery spyware stealer

Link:

https://tria.ge/reports/240518-x8dfxsbf6w/

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

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:

01a699ccb478c7a8debd2e74f1be6d6e7b92d972b38305dc4c7f31575e6bacb8

MD5 hash:

efe1bfbacb8903c098587aa1460ab9bb

SHA1 hash:

2c15bdbc5fcfa9730893af87430af2a418444add

Detections:

VidarStealer

win_stealc_a0

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Link:

https://www.unpac.me/results/b0b95dba-717d-4112-854d-8121774e262c/

SH256 hash:

7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef

MD5 hash:

574b039114c9ac13abe7739838cf52f9

SHA1 hash:

3b98b0a6318bb6c2380ea1b5e5bb09bd3d2b3c78

Link:

https://www.unpac.me/results/b0b95dba-717d-4112-854d-8121774e262c/

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/7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef

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:	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:	maldoc_find_kernel32_base_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	Windows_Generic_Threat_c374cd85 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_Generic_2993e5a5 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 7257c1c18b84857d106c9eba7a93222e85798e270eb99c21953ece1e8a879bef

(this sample)

Dropped by

Privateloader

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::SetFirmwareEnvironmentVariableA KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetStartupInfoA KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::FlushConsoleInputBuffer KERNEL32.dll::WriteConsoleOutputW KERNEL32.dll::WriteConsoleW KERNEL32.dll::WriteConsoleA KERNEL32.dll::SetConsoleTitleW KERNEL32.dll::SetStdHandle
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateFileA

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