MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03b6b9b10aad113cb8e9bd43d0ed189dde70170e6141aa2bd3cbec5644e7553e. 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: 13

Intelligence 13 IOCs YARA 20 File information Comments 1

SHA256 hash:	03b6b9b10aad113cb8e9bd43d0ed189dde70170e6141aa2bd3cbec5644e7553e
SHA3-384 hash:	50660d2fa11839b6968c1e593a2cae30505dd65851bc9bcfc0cfa82390f642fe8e79eae1576c9987d2ba839195b0d9a1
SHA1 hash:	db43e8714ce1c8d496e0eef1f9f61fafa5dfa0ad
MD5 hash:	773e8af03da6e64f25166e7df67d71fe
humanhash:	earth-blossom-black-jig
File name:	773e8af03da6e64f25166e7df67d71fe
Download:	download sample
Signature	Stealc Create hunting rule
File size:	2'467'328 bytes
First seen:	2024-06-28 12:25:04 UTC
Last seen:	2024-06-28 14:34:23 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	001806c33a6e9fe5fbff34bdbd79b591 (112 x Stealc, 9 x MarsStealer, 1 x Amadey)
ssdeep	49152:InkYmh7/egM/WXtzFAmlR0yIwsMa720naH3QqN2zw0XTUzQaQo6Az99ZP:InkvZmgCeM8KTN60aH3QqN2z5XUQawAB
TLSH	T166B5337A83023EA3E99E4A70EF4B5C7CEA59447C65D19055E2CBDD2E112C6FC0CE198E
TrID	27.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 20.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 18.6% (.EXE) Win32 Executable (generic) (4504/4/1) 8.5% (.ICL) Windows Icons Library (generic) (2059/9) 8.3% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter	zbetcheckin
Tags:	32 exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

443

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

http://77.91.77.80/sauna/neste.exe

Verdict:

Malicious activity

Analysis date:

2024-06-28 13:24:11 UTC

Tags:

loader stealer stealc

Link:

https://app.any.run/tasks/eb3a3fb3-7935-41e0-8128-48ee922bcd29

Note:

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

Detection(s):

PUA.Win.Packer.EnigmaProtector-9852682-0

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=667eabdd7d0a7ff58bc759edwin10vpnfull_triage

Tags:

Execution Generic Infostealer Network Stealth Trojan

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Running batch commands

Creating a process with a hidden window

Launching a process

Connection attempt to an infection source

Sending an HTTP GET request to an infection source

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

enigma lolbin microsoft_visual_cc packed packed shell32

Link:

https://www.filescan.io/uploads/667eabe3ef9fdf64aa7010df/reports/28e79c52-a18d-44c1-bcd8-dab062913143/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/03b6b9b10aad113cb8e9bd43d0ed189dde70170e6141aa2bd3cbec5644e7553e

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.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/81d051c5-7234-4479-9e87-8776bc06eb3c

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1464154

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Detected unpacking (changes PE section rights)

Found malware configuration

Hides threads from debuggers

Machine Learning detection for sample

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

PE file has nameless sections

Sample uses string decryption to hide its real strings

Snort IDS alert for network traffic

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/03b6b9b10aad113cb8e9bd43d0ed189dde70170e6141aa2bd3cbec5644e7553e

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/03b6b9b10aad113cb8e9bd43d0ed189dde70170e6141aa2bd3cbec5644e7553e/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2024-06-28 12:26:12 UTC

File Type:

PE (Exe)

AV detection:

17 of 24 (70.83%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ao3ltmikvuitzohjxvb5b3iytxphafyomfa2uk6tzpwfmrhhku7a._file

Verdict:

suspicious

Result

Malware family:

stealc

Score:

10/10

Tags:

family:amadey family:stealc botnet:4dd39d botnet:default discovery evasion spyware stealer trojan

Link:

https://tria.ge/reports/240628-pl6vyssbnn/

Behaviour

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Drops file in Windows directory

Suspicious use of NtSetInformationThreadHideFromDebugger

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Checks BIOS information in registry

Checks computer location settings

Executes dropped EXE

Identifies Wine through registry keys

Loads dropped DLL

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Downloads MZ/PE file

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Amadey

Stealc

Malware Config

C2 Extraction:

http://85.28.47.4
http://77.91.77.82

Unpacked files

SH256 hash:

03b6b9b10aad113cb8e9bd43d0ed189dde70170e6141aa2bd3cbec5644e7553e

MD5 hash:

773e8af03da6e64f25166e7df67d71fe

SHA1 hash:

db43e8714ce1c8d496e0eef1f9f61fafa5dfa0ad

Link:

https://www.unpac.me/results/daace76a-b093-4db5-bd74-365268e32bea/

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/03b6b9b10aad113cb8e9bd43d0ed189dde70170e6141aa2bd3cbec5644e7553e

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:	Borland Create hunting rule
Author:	malware-lu

Rule name:	Check_OutputDebugStringA_iat Create hunting rule

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:	EnigmaStub Create hunting rule
Author:	@bartblaze
Description:	Identifies Enigma packer stub.

Rule name:	HeavensGate Create hunting rule
Author:	kevoreilly
Description:	Heaven's Gate: Switch from 32-bit to 64-mode

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

Rule name:	maldoc_getEIP_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:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

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

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

Rule name:	Windows_Trojan_Stealc_b8ab9ab5 Create hunting rule
Author:	Elastic Security

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 03b6b9b10aad113cb8e9bd43d0ed189dde70170e6141aa2bd3cbec5644e7553e

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2909131/

URLhaus

https://urlhaus.abuse.ch/url/2908698/

URLhaus

https://urlhaus.abuse.ch/url/2909129/

URLhaus

https://urlhaus.abuse.ch/url/2910681/

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

Reviews

ID	Capabilities	Evidence
SHELL_API	Manipulates System Shell	shell32.dll::ShellExecuteA
WIN_BASE_API	Uses Win Base API	kernel32.dll::LoadLibraryA
WIN_BASE_IO_API	Can Create Files	version.dll::GetFileVersionInfoA

Comments

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zbet commented on 2024-06-28 12:25:05 UTC

url : hxxp://77.91.77.80/sauna/neste.exe