MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 64c5da3d37c69be0da0c26281ec227ad95f42c0a783e32b4c4553112d7dc0ec7. 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

SHA256 hash:	64c5da3d37c69be0da0c26281ec227ad95f42c0a783e32b4c4553112d7dc0ec7
SHA3-384 hash:	ff004e9c860e19dff3212ef53c1aba694e5dca4aab425ad5006c2767ad895f270dc926b60d751fa44aa613b3fc030f31
SHA1 hash:	bb30b45983e1b03ce62f19b9667c5d61ce652f49
MD5 hash:	37563f5f4e01d5f393ef8c36e74cca0d
humanhash:	social-missouri-may-kentucky
File name:	37563f5f4e01d5f393ef8c36e74cca0d.exe
Download:	download sample
Signature	Stealc Create hunting rule
File size:	589'176 bytes
First seen:	2023-10-30 11:35:44 UTC
Last seen:	2023-10-30 13:17:22 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	298cb3d37775391ff8b8cc74cba1548f (15 x Stealc, 1 x MarsStealer)
ssdeep	12288:MS4vdwKTNWuuRYqrggHp/bLf7daPBIlXSY4j+6qj9:aF7M0UJf7gZIlqjyj9
Threatray	946 similar samples on MalwareBazaar
TLSH	T156C49E51E2C14D3AC0672A3E5D1BE2AD58247D1236A8D88AAFD47FCC1F3528137F4A97
TrID	38.9% (.SCR) Windows screen saver (13097/50/3) 29.7% (.EXE) DOS Borland compiled Executable (generic) (10000/1/2) 13.3% (.EXE) Win32 Executable (generic) (4505/5/1) 6.0% (.EXE) OS/2 Executable (generic) (2029/13) 5.9% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):
dhash icon	399998ecd4d46c0e (572 x Quakbot, 137 x ArkeiStealer, 82 x GCleaner)
Reporter	abuse_ch
Tags:	exe Stealc

abuse_ch

Stealc C2:
http://bidbur.com/b5c586aec2e1004c.php

Intelligence

File Origin

# of uploads :

# of downloads :

334

Origin country :

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/457083/

Detection(s):

SecuriteInfo.com.Trojan.DownLoader46.27845.27770.1692.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Creating a window

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Sending a custom TCP request

DNS request

Sending an HTTP GET request

Running batch commands

Creating a process with a hidden window

Launching a process

Gathering data

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

control keylogger lolbin overlay packed replace shell32

Link:

https://www.filescan.io/uploads/653f9523bc703e36b0937556/reports/a1d1e2b3-c818-4364-9189-04f989008b9a/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/64c5da3d37c69be0da0c26281ec227ad95f42c0a783e32b4c4553112d7dc0ec7

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/4f70c807-f74a-4bc8-9d88-7311e93ea98c

Result

Threat name:

CryptOne, Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1334194

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 evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)

Found malware configuration

Found many strings related to Crypto-Wallets (likely being stolen)

Icon mismatch, binary includes an icon from a different legit application in order to fool users

Malicious sample detected (through community Yara rule)

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 steal Crypto Currency Wallets

Yara detected CryptOne packer

Yara detected Stealc

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/64c5da3d37c69be0da0c26281ec227ad95f42c0a783e32b4c4553112d7dc0ec7

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/64c5da3d37c69be0da0c26281ec227ad95f42c0a783e32b4c4553112d7dc0ec7/

Threat name:

Win32.Trojan.Stealc

Status:

Malicious

First seen:

2023-10-30 11:36:05 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

15 of 23 (65.22%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=mtc5upjxy2n6bwqmeyub5qrhvwk7ilakpa7dfngekuyrfv64b3dq._file

Verdict:

malicious

Result

Malware family:

n/a

Score:

8/10

Tags:

discovery spyware stealer

Link:

https://tria.ge/reports/231030-nqkb3scf4s/

Behaviour

Checks processor information in registry

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of UnmapMainImage

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

Unpacked files

SH256 hash:

8bb310aaf16748bf52307f1278309a52f3e1d8cff657f0690a65f15d852ab40e

MD5 hash:

e2af0b6b1fd8fd11f0f547090e829d44

SHA1 hash:

f73549f2e22b33a0f391f8dd165072ca4cfb63f7

Detections:

stealc

Link:

https://www.unpac.me/results/0284d95c-9f94-4439-8439-e036837f3da1/

Parent samples :

1ed1865896a4f3c5b4530772c5ea0adbbc3839a712b4d73c575ea6667da6fd30
bb64bbb1275764b20b7187238f3af234e59a84b56734439c1577811db4fb2972
64c5da3d37c69be0da0c26281ec227ad95f42c0a783e32b4c4553112d7dc0ec7
a3a0ec083b5e4e00485974ad2885f89d602a4ea74059b0c5cee54d11f7e3ad7b

SH256 hash:

64c5da3d37c69be0da0c26281ec227ad95f42c0a783e32b4c4553112d7dc0ec7

MD5 hash:

37563f5f4e01d5f393ef8c36e74cca0d

SHA1 hash:

bb30b45983e1b03ce62f19b9667c5d61ce652f49

Link:

https://www.unpac.me/results/0284d95c-9f94-4439-8439-e036837f3da1/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/64c5da3d37c6/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

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:	BobSoftMiniDelphiBoBBobSoft Create hunting rule
Author:	malware-lu

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:	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:	maldoc_getEIP_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	QbotStuff Create hunting rule
Author:	anonymous

Rule name:	shellcode Create hunting rule
Author:	nex
Description:	Matched shellcode byte patterns

Rule name:	Trojan_W32_Gh0stMiancha_1_0_0 Create hunting rule

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:	yarahub_win_stealc_bytecodes_oct_2023 Create hunting rule
Author:	Matthew @ Embee_Research

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 64c5da3d37c69be0da0c26281ec227ad95f42c0a783e32b4c4553112d7dc0ec7

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/2723302/

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/457083/

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