MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf. 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: 14

Intelligence 14 IOCs YARA 19 File information Comments 1

SHA256 hash:	99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf
SHA3-384 hash:	b6abf6b4d2ae4591b3c50322a22ca54c53e4f285f3cdc073d4ef645efda8850bd85b4f24e051c28f4f51de55a6ba4901
SHA1 hash:	5ffd579886eae9148141746294e2ee3ae922c8cc
MD5 hash:	591deb3212cb1720fa03640f6257b5dc
humanhash:	july-carolina-west-alaska
File name:	591deb3212cb1720fa03640f6257b5dc
Download:	download sample
Signature	Stealc Create hunting rule
File size:	2'547'200 bytes
First seen:	2024-05-19 04:21:55 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	87863207c5730bf44599bc0da2db84f4 (1 x Stealc)
ssdeep	49152:P9Ay1zb37wq+3GQQvFOsAMSgcCNvQE5qh4OLzooa2ZgEPmBTI7pJLOjq5:ay1/7wq+36FBLNvQvm9n2Zm1wp9Om
TLSH	T1F4C53387060F55E3FEB224340B7E9A214D95EBBA1766671ED6E291F91684363CC032CF
TrID	28.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 25.5% (.EXE) Win32 Executable (generic) (4504/4/1) 11.6% (.ICL) Windows Icons Library (generic) (2059/9) 11.5% (.EXE) OS/2 Executable (generic) (2029/13) 11.3% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter	zbetcheckin
Tags:	32 exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

339

Origin country :

Vendor Threat Intelligence

Malware family:

amadey

ID:

File name:

c2e22720a671a5942d9e83d79b5ed0a9f9dd526cede852b2dd23e2b07925503a.exe

Verdict:

Malicious activity

Analysis date:

2024-05-18 12:39:38 UTC

Tags:

amadey botnet stealer loader lumma redline meta metastealer risepro evasion stealc miner opendir telegram remote xworm xmrig

Link:

https://app.any.run/tasks/1c69ca47-57bb-445a-bb57-1cd72e47a4c9

Note:

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

Detection(s):

Win.Malware.Zusy-9837401-0

PUA.Win.Packer.EnigmaProtector-9852682-0

Verdict:

Malicious

Score:

99.1%

Tags:

Generic Infostealer Network Stealth Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

DNS request

Connection attempt

Sending a custom TCP request

Sending an HTTP GET request

Using the Windows Management Instrumentation requests

Running batch commands

Creating a process with a hidden window

Launching a process

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

crypto enigma lolbin packed packed shell32

Link:

https://www.filescan.io/uploads/66497e6cd7fb0506c93cbdef/reports/6dfccfaf-71d1-4167-8531-3bad7da742da/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

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.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/384be264-69a6-473a-8669-518cfa081447

Result

Threat name:

Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1443934

Signature

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Detected unpacking (changes PE section rights)

Found malware configuration

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

Hides threads from debuggers

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

PE file has nameless sections

Snort IDS alert for network traffic

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)

Tries to steal Crypto Currency Wallets

Yara detected AntiVM3

Yara detected Powershell download and execute

Yara detected Vidar

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf/

Threat name:

Win32.Downloader.Rhadam

Status:

Malicious

First seen:

2024-05-18 13:15:50 UTC

File Type:

PE (Exe)

AV detection:

21 of 24 (87.50%)

Threat level:

3/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=thwxowkkcog6g55kf4bsuuppitunwzme3suf4cwn5egzdrxsgc7q._file

Verdict:

unknown

Result

Malware family:

vidar

Score:

10/10

Tags:

family:stealc family:vidar discovery spyware stealer

Link:

https://tria.ge/reports/240519-ey8j7sab6x/

Behaviour

Checks processor information in registry

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of NtSetInformationThreadHideFromDebugger

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 local email clients

Reads user/profile data of web browsers

Downloads MZ/PE file

Detect Vidar Stealer

Stealc

Vidar

Unpacked files

SH256 hash:

99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

MD5 hash:

591deb3212cb1720fa03640f6257b5dc

SHA1 hash:

5ffd579886eae9148141746294e2ee3ae922c8cc

Link:

https://www.unpac.me/results/1bc922c9-dacb-4867-b9e4-e7764c1ebdb1/

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

Threat name:

Stealc

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

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:	Borland Create hunting rule
Author:	malware-lu

Rule name:	Check_Dlls Create hunting rule

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

Rule name:	EnigmaStub Create hunting rule
Author:	@bartblaze
Description:	Identifies Enigma packer stub.

Rule name:	grakate_stealer_nov_2021 Create hunting rule

Rule name:	has_telegram_urls Create hunting rule
Author:	Aaron DeVera<aaron@backchannel.re>
Description:	Detects Telegram URLs

Rule name:	HeavensGate Create hunting rule
Author:	kevoreilly
Description:	Heaven's Gate: Switch from 32-bit to 64-mode

Rule name:	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA Create hunting rule
Author:	ditekSHen
Description:	Detects Windows executables referencing non-Windows User-Agents

Rule name:	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL Create hunting rule
Author:	ditekSHen
Description:	Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

Rule name:	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing potential Windows Defender anti-emulation checks

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

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	QbotStuff Create hunting rule
Author:	anonymous

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

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

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

Rule name:	Windows_Generic_Threat_c374cd85 Create hunting rule
Author:	Elastic Security

File information

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

Web download

Stealc

exe 99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2855079/

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

Reviews

ID	Capabilities	Evidence
SHELL_API	Manipulates System Shell	shell32.dll::ShellExecuteA
WIN_BASE_API	Uses Win Base API	kernel32.dll::LoadLibraryA
WIN_BASE_IO_API	Can Create Files	version.dll::GetFileVersionInfoA

Comments

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zbet commented on 2024-05-19 04:21:56 UTC

url : hxxp://5.42.96.7/lend/csrss.exe