MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c73449a6acb51f440dd1f4228ac5e537eb3653b903fab608b9c4fc427b893c41. 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 11 File information Comments

SHA256 hash:	c73449a6acb51f440dd1f4228ac5e537eb3653b903fab608b9c4fc427b893c41
SHA3-384 hash:	e92987ce9b98407046d1ad7707d73d2088db009284aaeec11e45a1693e37632204b0b66f59ba4f1e1dd704a9dc0ce7bc
SHA1 hash:	e91e1afb736ace4a94f29f42def489316b5cda87
MD5 hash:	ce5cefd9ea035c41a5ebd4dbb52d34f9
humanhash:	hot-nebraska-kentucky-four
File name:	file
Download:	download sample
Signature	Stealc Create hunting rule
File size:	219'648 bytes
First seen:	2023-09-05 00:55:45 UTC
Last seen:	2023-09-05 01:35:55 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	560ade47cf330e07b01243fb5f60f57b (5 x RedLineStealer, 3 x Smoke Loader, 1 x Stealc)
ssdeep	3072:fgMhUttOh7eVeLC+H2x2FLsGasBPrYZdUz6mj73vwYa:ozOh7AeLC+HCSLXProUz6mj73vna
Threatray	204 similar samples on MalwareBazaar
TLSH	T14624DF21B7E0C032F0A3953055B4C7E1EE7BB83215B5949B77680A3E5E727C09BBA356
TrID	47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):
dhash icon	0a724222039a0a00 (1 x Stealc)
Reporter	andretavare5
Tags:	exe Stealc

andretavare5

Sample downloaded from http://ralphkors.top/calc2.exe

Intelligence

File Origin

# of uploads :

# of downloads :

296

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

file

Verdict:

Malicious activity

Analysis date:

2023-09-05 00:56:43 UTC

Tags:

stealc stealer

Link:

https://app.any.run/tasks/adfeb0a9-122d-44df-89dd-6edcbec56995

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/446172/

Detection(s):

SecuriteInfo.com.Win32.PWSX-gen.13333.17386.UNOFFICIAL

Result

Verdict:

Clean

Maliciousness:

Behaviour

Сreating synchronization primitives

DNS request

Launching the default Windows debugger (dwwin.exe)

Gathering data

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

greyware lolbin packed shell32

Link:

https://www.filescan.io/uploads/64f67ca34578d9c35e021e90/reports/0742f7e5-b227-4648-b805-f078bab4ffc9/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/c73449a6acb51f440dd1f4228ac5e537eb3653b903fab608b9c4fc427b893c41

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:

Oski Stealer

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a7b4ad1a-8e99-43b4-9485-5cb1e41d8fe2

Result

Threat name:

Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1303167

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)

Sample uses string decryption to hide its real strings

Self deletion via cmd or bat file

Snort IDS alert for network traffic

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

Tries to steal Crypto Currency Wallets

Tries to steal Mail credentials (via file / registry access)

Yara detected Stealc

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c73449a6acb51f440dd1f4228ac5e537eb3653b903fab608b9c4fc427b893c41/

Threat name:

Win32.Trojan.Privateloader

Status:

Malicious

First seen:

2023-09-05 00:56:06 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=y42etjvmwupuidor6qrivrpfg7vtmu5zap5lmcfzyt6ee64jhraq._file

Verdict:

malicious

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc botnet:4109976902326622912460160242 discovery spyware stealer

Link:

https://tria.ge/reports/230905-bacwvacg33/

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

Loads dropped DLL

Reads user/profile data of web browsers

Downloads MZ/PE file

Stealc

Malware Config

C2 Extraction:

http://michealjohnson.top

Unpacked files

SH256 hash:

38a5c69d1ee7c40cdc52172548936ec691f56d84bb413121375d0efa812d7c91

MD5 hash:

264d2a0135d0a951b22c3602b5bb253b

SHA1 hash:

c22c31873b2c474443b6dbf488cc28e2b434c093

Link:

https://www.unpac.me/results/75ab81bc-75bd-4e3d-a63f-a4cf91cca9a9/

SH256 hash:

c73449a6acb51f440dd1f4228ac5e537eb3653b903fab608b9c4fc427b893c41

MD5 hash:

ce5cefd9ea035c41a5ebd4dbb52d34f9

SHA1 hash:

e91e1afb736ace4a94f29f42def489316b5cda87

Link:

https://www.unpac.me/results/75ab81bc-75bd-4e3d-a63f-a4cf91cca9a9/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/c73449a6acb5/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/c73449a6acb51f440dd1f4228ac5e537eb3653b903fab608b9c4fc427b893c41

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

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

Rule name:	Windows_Trojan_Smokeloader_3687686f 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.

Dropped by

PrivateLoader

Delivery method

Distributed via drive-by

Cape

https://www.capesandbox.com/analysis/446172/

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