MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2f25fbda24d97c0df00d3f2bcfce128f0e418da31d2e64f13a545ef2a4baa3f. 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 9 File information Comments

SHA256 hash:	b2f25fbda24d97c0df00d3f2bcfce128f0e418da31d2e64f13a545ef2a4baa3f
SHA3-384 hash:	fb9fb9f6bf1b4c9bc18af39d0232f26b078554cc6f90fab5d800b8998d52725ab69b8d97cee4c60c1ff95658dccd3695
SHA1 hash:	0df0f2bb3411dd5d36d3c1adf815b08196015c53
MD5 hash:	cfa083fb64a14363a044cbe581c767a0
humanhash:	bravo-lemon-nineteen-uranus
File name:	cfa083fb64a14363a044cbe581c767a0.exe
Download:	download sample
Signature	Stealc Create hunting rule
File size:	311'808 bytes
First seen:	2023-12-02 01:10:28 UTC
Last seen:	2023-12-02 02:18:06 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	8aa6592c860ca75b6935350915f6cb30 (1 x Smoke Loader, 1 x Stealc)
ssdeep	6144:M4xSXyXYMAfq36rQ7Rm1x9EXxQBaPp69a:Mv8Afq36k7g1tBCII
TLSH	T17A641A1392E17C50E9164B328E1FC6E8761EFB518F7D77AA1214AB6F05732B2C262F11
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	0045010111050919 (1 x Stealc)
Reporter	abuse_ch
Tags:	exe Stealc

abuse_ch

Stealc C2:
http://77.91.76.36/3886d2276f6914c4.php

Intelligence

File Origin

# of uploads :

# of downloads :

326

Origin country :

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/461835/

Detection(s):

SecuriteInfo.com.Trojan.Siggen22.22072.26774.25402.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Gathering data

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/b2f25fbda24d97c0df00d3f2bcfce128f0e418da31d2e64f13a545ef2a4baa3f

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/3278eca1-14ec-46cd-ac69-6cb70e2187d3

Result

Threat name:

Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1351853

Signature

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)

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

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 harvest and steal ftp login credentials

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

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b2f25fbda24d97c0df00d3f2bcfce128f0e418da31d2e64f13a545ef2a4baa3f

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b2f25fbda24d97c0df00d3f2bcfce128f0e418da31d2e64f13a545ef2a4baa3f/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2023-12-01 23:22:16 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

15 of 23 (65.22%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wlzf7pncjwl4bxya2pzlz7hbfdyoigg2ghjomtytuvc66kslvi7q._file

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc discovery spyware stealer

Link:

https://tria.ge/reports/231202-bjyvnshb7w/

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 data files stored by FTP clients

Reads user/profile data of web browsers

Downloads MZ/PE file

Stealc

Malware Config

C2 Extraction:

http://77.91.76.36

Unpacked files

SH256 hash:

acb86bb2c87864e5bafa05a7bfd921a012f56af8255b1799c723d48e2fce7fb9

MD5 hash:

9a5562cc357620c649b6bef810d55116

SHA1 hash:

42c14018e3d8930fc9ebadc4f3067c1d503f4798

Detections:

stealc

win_stealc_a0

win_stealc_bytecodes_oct_2023

Link:

https://www.unpac.me/results/6dc26eb2-9ed5-4808-8e89-fee85e3f83a1/

Parent samples :
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SH256 hash:

b2f25fbda24d97c0df00d3f2bcfce128f0e418da31d2e64f13a545ef2a4baa3f

MD5 hash:

cfa083fb64a14363a044cbe581c767a0

SHA1 hash:

0df0f2bb3411dd5d36d3c1adf815b08196015c53

Link:

https://www.unpac.me/results/6dc26eb2-9ed5-4808-8e89-fee85e3f83a1/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b2f25fbda24d/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/b2f25fbda24d97c0df00d3f2bcfce128f0e418da31d2e64f13a545ef2a4baa3f

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:	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:	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:	Windows_Trojan_Smokeloader_3687686f Create hunting rule
Author:	Elastic Security

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/