MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6. 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: 17

Intelligence 17 IOCs YARA 9 File information Comments 1

SHA256 hash:	e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6
SHA3-384 hash:	87088abcef40f70c1df6366e763bc9ba01e1ac452360e6419003e0d4eff6e9f5f2223ad6f0fcbb9d4ca6612ed59cfe0d
SHA1 hash:	068428f86b1dd5a2627dc7dda38b31c8f2a8120f
MD5 hash:	c93a8c6b6d49975c3fcbd19c76e2a6d9
humanhash:	item-early-sixteen-georgia
File name:	c93a8c6b6d49975c3fcbd19c76e2a6d9
Download:	download sample
Signature	Stealc Create hunting rule
File size:	289'792 bytes
First seen:	2024-03-11 18:14:33 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	6d5fdfdb3082f7d8ebd50a7723f30158 (1 x Glupteba, 1 x Stealc)
ssdeep	3072:0+ekMbpsjJpLHpnmHB+E9CRBJxPWHbhZtF9hxcFPCK2BnfrvIRc02VAS245XHrLt:0z+jXbQhWvOVTLIGfrv4cRiS2S3rLTL
Threatray	19 similar samples on MalwareBazaar
TLSH	T17054BE03BAF0C475F2B74A319834D5A45A7BBC629E75870B37982A0E7D707C09E26763
TrID	37.3% (.EXE) Win64 Executable (generic) (10523/12/4) 17.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 15.9% (.EXE) Win32 Executable (generic) (4504/4/1) 7.3% (.ICL) Windows Icons Library (generic) (2059/9) 7.1% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):
dhash icon	0818192820808000 (1 x Stealc)
Reporter	zbetcheckin
Tags:	32 exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

343

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6.exe

Verdict:

Malicious activity

Analysis date:

2024-03-11 18:28:38 UTC

Tags:

stealer stealc

Link:

https://app.any.run/tasks/a840ea00-5aae-485e-ab84-665f96cf16c8

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/478647/

Detection(s):

Win.Packer.pkr_ce1a-9980177-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Creating a file

Reading critical registry keys

Changing a file

Creating a file in the %AppData% subdirectories

Creating a window

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Launching a process

Moving a file to the Program Files subdirectory

Replacing files

Sending an HTTP GET request

Forced system process termination

Connection attempt to an infection source

Stealing user critical data

Sending an HTTP GET request to an infection source

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-vm fingerprint

Link:

https://www.filescan.io/uploads/65ef4a38fc3fe20efe655667/reports/9acd5364-a15c-490a-b73c-8c71e16d628d/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6

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/245f58a7-e8f9-4566-b547-bafc73a7a783

Result

Threat name:

Mars Stealer, Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1406976

Signature

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

Searches for specific processes (likely to inject)

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/e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6/

Threat name:

Win32.Spyware.Stealc

Status:

Malicious

First seen:

2024-03-11 18:15:09 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=5e47u3bw37jbk75yhs3n4ehjlqxfytyu42eo6ypwf3fjtugoedta._file

Verdict:

malicious

Stealc

58978edefe687a8790141583313962ab627aefaab2278e9da3a9fba753cdb608

Stealc

6e95e17675b684ab0248beae17c5979c0dd060a9f94459bded1181b6c7fdcf22

Stealc

8ad20c4b4c312feb468a58d1748c0d7abba3dd2d0fb8e6bfbee837c47a0e8c5a

Stealc

9643edaedb1e0b2075c9d608e12477727015706f3fe670283d84fb7dae49c88d

Stealc

a863912b539cb57887b41e05ac11e17298bac7565c6c715b33fe287590848d5d

Stealc

e5be6b01b31232f0ec0059be780fd0c20cea2d8e0450c9ed30dbe8e5b789d21a

Stealc

+ 9 additional samples on MalwareBazaar

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc discovery spyware stealer

Link:

https://tria.ge/reports/240311-wvwvnsac8x/

Behaviour

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Program crash

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

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://185.172.128.145

Unpacked files

SH256 hash:

4cc18950f5f63698850234e908b5aa158ac33cefcc01c656995a483c9b0340e4

MD5 hash:

4ede5aead6a7a91f4fc86d56c0a86751

SHA1 hash:

5eab867acfba66409012ed6a5c9852813930a199

Detections:

win_stealc_auto

Link:

https://www.unpac.me/results/7d90892a-74ed-4d57-a283-146048913160/

Parent samples :
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SH256 hash:

e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6

MD5 hash:

c93a8c6b6d49975c3fcbd19c76e2a6d9

SHA1 hash:

068428f86b1dd5a2627dc7dda38b31c8f2a8120f

Link:

https://www.unpac.me/results/7d90892a-74ed-4d57-a283-146048913160/

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/e939fa6c36df/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/e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6

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 e939fa6c36dfd2157fb83cb6de10e95c2e5c4f14e688ef61f62eca99d0ce20e6

(this sample)

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/478647/

URLhaus

https://urlhaus.abuse.ch/url/2775151/

URLhaus

https://urlhaus.abuse.ch/url/2749139/

URLhaus

https://urlhaus.abuse.ch/url/2755131/

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_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::FindNextVolumeMountPointA KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetVolumeInformationA KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::AddConsoleAliasW KERNEL32.dll::AttachConsole KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleInputA KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateDirectoryA KERNEL32.dll::CreateFileW KERNEL32.dll::GetWindowsDirectoryW KERNEL32.dll::RemoveDirectoryA

Comments

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zbet commented on 2024-03-11 18:14:34 UTC

url : hxxp://185.172.128.109/syncUpd.exe