MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240. 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 9 File information Comments

SHA256 hash:	bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240
SHA3-384 hash:	e94f4b40b7e41cf9c6ce0ab2d4998d6e5fcb7811759283edce58d21e4f9c5c04790dfb8c21bf2360c70583710f3b80d3
SHA1 hash:	748c47ca7c553a9dad28b74b24555a78299eae4e
MD5 hash:	e771c0057ba416555a7dc16e9e281809
humanhash:	whiskey-sierra-oxygen-louisiana
File name:	e771c0057ba416555a7dc16e9e281809.exe
Download:	download sample
Signature	Stealc Create hunting rule
File size:	205'312 bytes
First seen:	2024-03-10 11:50:18 UTC
Last seen:	2024-03-10 13:29:57 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f713e9b3b1303cb3130c63e0f850f9c9 (1 x Stealc)
ssdeep	3072:ZfIuO6wtnvOFVIwQRefSszsls0Met3hv1C5u0EJKaPJBSE5t51:Zgunw9kViRe5sl4etxv1CNEoKS+t5
Threatray	20 similar samples on MalwareBazaar
TLSH	T14014DF1132EC8079E5A30931FCB4A6E1476ABC932734419F77982F3EAF716C48A64367
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) (4504/4/1)
File icon (PE):
dhash icon	3370ecd2c4f0339a (3 x Stealc, 2 x Smoke Loader, 1 x LummaStealer)
Reporter	abuse_ch
Tags:	exe Stealc

abuse_ch

Stealc C2:
http://185.172.128.210/f993692117a3fda2.php

Intelligence

File Origin

# of uploads :

# of downloads :

465

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240.exe

Verdict:

Malicious activity

Analysis date:

2024-03-10 15:15:45 UTC

Tags:

stealer stealc

Link:

https://app.any.run/tasks/0255dd95-eae6-4c9e-8cab-0254e74eaf03

Note:

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

Detection:

Stealc

Link:

https://www.capesandbox.com/analysis/478375/

Detection(s):

SecuriteInfo.com.Trojan.DownLoader46.54412.6615.27293.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Connecting to a non-recommended domain

Connection attempt

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Creating a window

Launching a process

Moving a file to the Program Files subdirectory

Replacing files

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Link:

https://www.filescan.io/uploads/65ed9ea65cd908a33dad033f/reports/c2f53c18-2648-44b8-a7df-37872c9e3785/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240

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/7f6271c3-c339-4fea-b647-794def92d859

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

phis.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1406100

Signature

Antivirus / Scanner detection for submitted sample

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 submitted file

Overwrites Mozilla Firefox settings

Sample uses string decryption to hide its real strings

Searches for specific processes (likely to inject)

Self deletion via cmd or bat file

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/bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240/

Threat name:

Win32.Trojan.Privateloader

Status:

Malicious

First seen:

2024-03-10 11:51:05 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

19 of 23 (82.61%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xokllifdc5ad2k7y7drbse5bu6iqmqpahjivpihnzthmdkoymjaa._file

Verdict:

malicious

Stealc

58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608

Stealc

6e95e17675b684ab0248beae17c5979c0dd060a9f94459bded1181b6c7fdcf22

Stealc

8ad20c4b4c312feb468a58d1748c0d7abba3dd2d0fb8e6bfbee837c47a0e8c5a

Stealc

9643edaedb1e0b2075c9d608e12477727015706f3fe670283d84fb7dae49c88d

Stealc

a863912b539cb57887b41e05ac11e17298bac7565c6c715b33fe287590848d5d

Stealc

c79f0b410c62adbad0d697c85f0f6cf786c61e1a1244090650440d8a09b90bbd

Stealc

e5be6b01b31232f0ec0059be780fd0c20cea2d8e0450c9ed30dbe8e5b789d21a

Stealc

+ 10 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

8/10

Tags:

discovery spyware stealer

Link:

https://tria.ge/reports/240310-nz5pdaca69/

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

Unpacked files

SH256 hash:

34e868f09b59be9f7a4e387eea66d8813939b9cb19948d7ec7736c37fbd07d83

MD5 hash:

68eff65dadefc2a09b83a2b2a21d075d

SHA1 hash:

4165aab529b392b7fce6c0293f01aa0ee2a70e3f

Detections:

win_stealc_auto

Link:

https://www.unpac.me/results/f4336055-2e52-4ed8-ad52-fd6778dc67c9/

Parent samples :
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SH256 hash:

bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240

MD5 hash:

e771c0057ba416555a7dc16e9e281809

SHA1 hash:

748c47ca7c553a9dad28b74b24555a78299eae4e

Link:

https://www.unpac.me/results/f4336055-2e52-4ed8-ad52-fd6778dc67c9/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/bb94b5a0a317/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/bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240

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:	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:	malware_Stealc_str Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	Stealc infostealer

Rule name:	Windows_Trojan_Smokeloader_3687686f 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/

File information

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

Web download

Stealc

exe bb94b5a0a317403d2bf8f8e21913a1a7910641e03a5157a0edcccec1a9d86240

(this sample)

URLhaus

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

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2777316/

Cape

https://www.capesandbox.com/analysis/478375/

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
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleOutputCharacterW KERNEL32.dll::GetConsoleAliasExesLengthA KERNEL32.dll::GetConsoleDisplayMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateHardLinkA KERNEL32.dll::GetFileAttributesA
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::DnsHostnameToComputerNameA

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