MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9. 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 17 File information Comments

SHA256 hash:	a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9
SHA3-384 hash:	2e1fedc6dc6e2dda8825f8a1248931f07561197dd3b87ccf6e22ec9123c7cf85b397f3736ce76f9ac6f830bbda74375b
SHA1 hash:	352bd5b4f4373546dfe9576dbd02b158589dbd0a
MD5 hash:	39351fae1fa6e6227941ebc2b7a7fc75
humanhash:	april-alanine-sixteen-hawaii
File name:	39351fae1fa6e6227941ebc2b7a7fc75.exe
Download:	download sample
Signature	Stealc Create hunting rule
File size:	318'464 bytes
First seen:	2024-04-28 04:20:20 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	8c8bbaaa682c013cc75d9e0c38f1112a (30 x Stealc, 3 x Arechclient2, 1 x LummaStealer)
ssdeep	3072:R1GwGnDTpebsP2X/Z+UzcZsV7ztLksKuPDthTDuDN2gwnMwWF9YX2kkZ7ODE:Qw4c2s9zasKYaR2gSM1KGJODE
TLSH	T1D6646C0366F07C54E62647329E1EA6E8765DF9E08F45AB23321DBA9F0D7D071C263B90
TrID	60.4% (.EXE) InstallShield setup (43053/19/16) 14.7% (.EXE) Win64 Executable (generic) (10523/12/4) 7.0% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.8% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):
dhash icon	0305010321011100 (1 x Stealc)
Reporter	abuse_ch
Tags:	exe Stealc

abuse_ch

Stealc C2:
http://185.172.128.76/8681490a59ad0e34.php

Intelligence

File Origin

# of uploads :

# of downloads :

307

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9.exe

Verdict:

Malicious activity

Analysis date:

2024-04-28 04:21:27 UTC

Tags:

stealer stealc loader

Link:

https://app.any.run/tasks/9211805c-e8fc-47fc-ad1b-80e0b9cfb32c

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Running batch commands

Creating a process with a hidden window

Launching a process

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Connection attempt to an infection source

Sending an HTTP GET request to an infection source

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

fingerprint packed

Link:

https://www.filescan.io/uploads/662dceaf47bfd8641eb87b0f/reports/fc0234ea-dbcc-4f52-83ce-901a7e1f58c0/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9

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/865c486b-e10e-436b-9ab1-b8dd564ee701

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1432761

Signature

Antivirus detection for URL or domain

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 domain / URL

Multi AV Scanner detection for submitted file

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/a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9/

Threat name:

Win32.Trojan.StealC

Status:

Malicious

First seen:

2024-04-28 04:21:06 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

21 of 24 (87.50%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ul6yuklususd5nqc2dggszcf4jsk5a5srfxtlynxz4rdem3722uq._file

Verdict:

malicious

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc discovery stealer

Link:

https://tria.ge/reports/240428-eynj2afh98/

Behaviour

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Program crash

Checks installed software on the system

Stealc

Malware Config

C2 Extraction:

http://185.172.128.76

Unpacked files

SH256 hash:

5d0240865ac729989411c28e72427f89c4e028eb1e95d85cf2db69e8c119f5ad

MD5 hash:

786fe26c903d1e534e647a42342574c9

SHA1 hash:

aa8754524d05c1d76138b70be29889cce2f5e2d5

Detections:

stealc

win_stealc_auto

Link:

https://www.unpac.me/results/b30601ed-9637-492b-9560-a80f72448e5b/

Parent samples :
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SH256 hash:

a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9

MD5 hash:

39351fae1fa6e6227941ebc2b7a7fc75

SHA1 hash:

352bd5b4f4373546dfe9576dbd02b158589dbd0a

Link:

https://www.unpac.me/results/b30601ed-9637-492b-9560-a80f72448e5b/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a2fd8a297495/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/a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9

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:	Check_OutputDebugStringA_iat Create hunting rule

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:	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs Create hunting rule
Author:	ditekSHen
Description:	Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

Rule name:	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs Create hunting rule
Author:	ditekSHen
Description:	Detect binaries embedding considerable number of MFA browser extension IDs.

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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/

Rule name:	yara_template Create hunting rule

File information

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

Web download

Stealc

exe a2fd8a297495243eb602d0cc696445e264ae83b2896f35e1b7cf2232337fd6a9

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/2754939/

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2810818/

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::LoadLibraryExW KERNEL32.dll::LoadLibraryW KERNEL32.dll::GetVolumeInformationA KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleInputA KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleAliasesA KERNEL32.dll::GetConsoleProcessList KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateHardLinkW KERNEL32.dll::CreateFileW KERNEL32.dll::GetWindowsDirectoryA KERNEL32.dll::RemoveDirectoryA KERNEL32.dll::GetTempPathA
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::GetComputerNameW KERNEL32.dll::QueryDosDeviceW

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