MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 971071fa6d1e83a73fb3dffc31e214fc42ca5b02a57d06e959be8624717f720d. 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

ValleyRAT

Vendor detections: 11

Intelligence 11 IOCs YARA 10 File information Comments

SHA256 hash:	971071fa6d1e83a73fb3dffc31e214fc42ca5b02a57d06e959be8624717f720d
SHA3-384 hash:	68e6bf99a0e17f5ee3baca26bfb95e0bf8f7da5b4b6207e007890357db7b4f73447727a5504cfe8b6e4cc9c6c5d83284
SHA1 hash:	4fd3f2610979bc2b1ad91ee43d91ac55713e4d45
MD5 hash:	852d4617b401e544c6c602a2b9807589
humanhash:	hawaii-mountain-undress-don
File name:	letsvpn-latest_1.exe
Download:	download sample
Signature	ValleyRAT Create hunting rule
File size:	30'030'427 bytes
First seen:	2025-07-12 05:11:47 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f92b1cb2ff1860706ba79bd094575801 (1 x ValleyRAT)
ssdeep	786432:66Bu/0gbrigAlvujFua9wSR+Udi/GhZmXNhVsqDhi5:i/0OrigA5Euc+UoiyzVsqti5
TLSH	T10A67125666F840E9D0BAC139C9828A4BD6F278450B35CBCF40941AAE1F377E24D2EF75
TrID	38.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 15.6% (.ICL) Windows Icons Library (generic) (2059/9) 15.4% (.EXE) OS/2 Executable (generic) (2029/13) 15.2% (.EXE) Generic Win/DOS Executable (2002/3) 15.2% (.EXE) DOS Executable Generic (2000/1)
Magika	pebin
dhash icon	fadadac2a2b8c4e4 (11 x Nitol, 2 x Amadey, 2 x AgentTesla)
Reporter	GDHJDSYDH1
Tags:	backdoor dropper exe Gh0stRAT SilverFox ValleyRAT

GDHJDSYDH1

C2: 103.255.44.215

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

letsvpn-latest_1.exe

Verdict:

Malicious activity

Analysis date:

2025-07-12 04:59:02 UTC

Tags:

themida lua auto-reg upx antivm

Link:

https://app.any.run/tasks/a8296bb0-19bf-40c6-ad77-0dcf6bc8be65

Note:

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

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6871eeb1900df8e7f86a0881

Tags:

n/a

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for analyzing tools

Searching for the window

Creating a file

Creating a file in the %temp% subdirectories

Searching for synchronization primitives

Creating a process from a recently created file

Creating a window

Launching a process

Creating a process with a hidden window

Using the Windows Management Instrumentation requests

Adding an exclusion to Microsoft Defender

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug base64 datper expired-cert explorer fingerprint fingerprint invalid-signature lolbin microsoft_visual_cc msiexec obfuscated obfuscated overlay overlay overlay packed packed packed regsvr32 runonce signed themidawinlicense xor-pe zero

Link:

https://www.filescan.io/uploads/6871eeac425a30d7acd744e1/reports/361963b9-1e24-42b1-8104-813f97b21fbb/overview

Verdict:

Malicious

Labled as:

Win64/Packed.Themida

Link:

https://www.hybrid-analysis.com/sample/971071fa6d1e83a73fb3dffc31e214fc42ca5b02a57d06e959be8624717f720d

Score:

92%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/971071fa6d1e83a73fb3dffc31e214fc42ca5b02a57d06e959be8624717f720d

Gathering data

Threat name:

Win64.Trojan.Generic

Status:

Suspicious

First seen:

2025-07-12 04:59:04 UTC

File Type:

PE+ (Exe)

Extracted files:

805

AV detection:

10 of 24 (41.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=s4ihd6tnd2b2op5t376ddyqu7rbmuwycuv6qn2kzx2dci4l7oigq._file

Result

Malware family:

n/a

Score:

10/10

Tags:

bootkit defense_evasion discovery execution persistence privilege_escalation spyware stealer trojan upx

Link:

https://tria.ge/reports/250712-fvwlxahq8x/

Behaviour

Suspicious use of SendNotifyMessage

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System policy modification

Checks SCSI registry key(s)

Checks processor information in registry

Gathers network information

Modifies data under HKEY_USERS

Modifies registry class

Modifies system certificate store

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: LoadsDriver

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

System Location Discovery: System Language Discovery

Drops file in Program Files directory

Drops file in Windows directory

Drops file in System32 directory

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

UPX packed file

Adds Run key to start application

Checks installed software on the system

Checks whether UAC is enabled

Command and Scripting Interpreter: PowerShell

Indicator Removal: File Deletion

Network Service Discovery

Writes to the Master Boot Record (MBR)

Checks BIOS information in registry

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Drops file in Drivers directory

Modifies Windows Firewall

Identifies VirtualBox via ACPI registry values (likely anti-VM)

UAC bypass

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/1709e9f9-b88a-4617-9485-d34660a9c20a

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/971071fa6d1e83a73fb3dffc31e214fc42ca5b02a57d06e959be8624717f720d

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:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

Rule name:	botnet_plaintext_c2 Create hunting rule
Author:	cip
Description:	Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.

Rule name:	Capability_Embedded_Lua Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects embedded Lua engines by looking for multiple Lua API symbols or env-var hooks

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

Rule name:	FreddyBearDropper Create hunting rule
Author:	Dwarozh Hoshiar
Description:	Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

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

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	SUSP_XORed_MSDOS_Stub_Message Create hunting rule
Author:	Florian Roth
Description:	Detects suspicious XORed MSDOS stub message
Reference:	https://yara.readthedocs.io/en/latest/writingrules.html#xor-strings

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)