MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32. 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 16 File information Comments

SHA256 hash:	af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32
SHA3-384 hash:	7931d0e78d5122c0961fdb3a1a9ddaa123c00fcc8c8de67d80d552004a666d9498accb19b12f1134b5fa347436b37f05
SHA1 hash:	79951d01b3d08a9f0d78a4664cf6a14d2bd49cc3
MD5 hash:	aed159d44da4c704179ec0932539f0d6
humanhash:	seven-comet-charlie-wyoming
File name:	af4eb9efd0598c707a5a1a443b3c41138141d05639149.exe
Download:	download sample
Signature	Stealc Create hunting rule
File size:	318'976 bytes
First seen:	2024-04-28 04:20:46 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	8c8bbaaa682c013cc75d9e0c38f1112a (30 x Stealc, 3 x Arechclient2, 1 x LummaStealer)
ssdeep	6144:usebxS9eUKfJyvHv24xXumlmcdTM1/JODE:utbxUeUGIPlxXumFURwE
TLSH	T1D1647D0376F07C54E62687329E1ED6E8B61DF9608E59BB27320DBA0F05BD171C267B90
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	10302048c9484800 (1 x Stealc)
Reporter	abuse_ch
Tags:	exe Stealc

abuse_ch

Stealc C2:
http://185.172.128.62/902e53a07830e030.php

Intelligence

File Origin

# of uploads :

# of downloads :

322

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

02733f8822f5f4e84e08914d9984522587333257fa6fe0bfce7081f145a582ad.exe

Verdict:

Malicious activity

Analysis date:

2024-04-28 04:18:26 UTC

Tags:

gcleaner loader stealer stealc hijackloader arechclient2 backdoor

Link:

https://app.any.run/tasks/9609e98e-6516-42ac-ab66-bf70f1691a70

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

Connecting to a non-recommended domain

Connection attempt

Sending an HTTP GET request

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:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32

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/efdea582-dbbc-42e7-88da-6345119a43dc

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1432760

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/af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2024-04-28 04:21:07 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

16 of 24 (66.67%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=v5hlt36qlggha6s2djcdwpcbcoauducwhekjjwrnqfur2ym25mza._file

Verdict:

malicious

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc discovery spyware stealer

Link:

https://tria.ge/reports/240428-eynj2afh99/

Behaviour

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Enumerates physical storage devices

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

Stealc

Malware Config

C2 Extraction:

http://185.172.128.62

Unpacked files

SH256 hash:

aa57555649e54198e5174e62f2907c94dcc5d2939649d937598d3c4e50549016

MD5 hash:

5b61a2b9f06c1cce5b6b4702938471c3

SHA1 hash:

ac614c151df66150e2de339543e5b7dbe4b653a6

Detections:

stealc

win_stealc_auto

Link:

https://www.unpac.me/results/f4195577-62dd-4c1c-8281-43dfabbc4134/

Parent samples :

8b6af6cb7481b58e76dde6969caf317273d72afed263fdb28f9c34a703c4acb1
eeaa177b0bc2d85cf8b416c2ed3b85fd50bd7c811bf41a32d161a10a767c2fda
b61de149a368f78dc76338a644958eb51d4efcd333b4e33485463c76f48fa1e2
af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32
76b73bd1533ce48cd2cf55316e62b3869e920992c4d7673339f9c5eefa7d922a
ce160a07f5555fd479f9b86632a594d9e679bd60c4d817757230e1d382856586
2a95da6136e35a81cbd596c909286255c36b42ea23288ac39bf7e5777f3c26ce

SH256 hash:

af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32

MD5 hash:

aed159d44da4c704179ec0932539f0d6

SHA1 hash:

79951d01b3d08a9f0d78a4664cf6a14d2bd49cc3

Link:

https://www.unpac.me/results/f4195577-62dd-4c1c-8281-43dfabbc4134/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/af4eb9efd059/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/af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32

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_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 af4eb9efd0598c707a5a1a443b3c41138141d056391494da2d81691d619aeb32

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/2803113/

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::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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