MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b40c805adee587f29be6f98e986b92b11a545122703ab4eaea4b0fa3c3e02483. 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: 13
| SHA256 hash: | b40c805adee587f29be6f98e986b92b11a545122703ab4eaea4b0fa3c3e02483 |
|---|---|
| SHA3-384 hash: | c8be63c5a674986806929ead707a58092838451f11b7a2b4ab1fbfe6a7d2c4c14046d37ee9c5964cfb5549d1e8fabbe5 |
| SHA1 hash: | 5bc427ec099e18056e052e57be56627158028323 |
| MD5 hash: | b08bef15760d186eaa84d7d841498479 |
| humanhash: | connecticut-ten-cold-michigan |
| File name: | LetsVPN.exe |
| Download: | download sample |
| Signature | ValleyRAT |
| File size: | 31'921'974 bytes |
| First seen: | 2026-07-01 14:05:52 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 608505ff1e7e27ff4a42ea9c4e9f4192 (5 x LummaStealer, 5 x NetSupport, 3 x ValleyRAT) |
| ssdeep | 786432:Tt/o9kq4o2+gfnzPE3dLVjI/J+wjIqFOtC3/6eJD:e4o2DzPKFgOqFOAvjJD |
| Threatray | 171 similar samples on MalwareBazaar |
| TLSH | T1EB671221F24AC13BE56901B1592D9A9F5129BF7A0B7140C7B3DC3E7E2BB54C21236E1B |
| TrID | 29.5% (.EXE) Win64 Executable (generic) (6522/11/2) 22.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 20.3% (.EXE) Win32 Executable (generic) (4504/4/1) 9.1% (.EXE) OS/2 Executable (generic) (2029/13) 9.0% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| dhash icon | c0ccece874d4d4fc (7 x ValleyRAT) |
| Reporter |  Ling |
| Tags: | exe SilverFox Trojan/SilverFox.se[sd] ValleyRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
148
Origin country :
USVendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
LetsVPN.exe
Verdict:
No threats detected
Analysis date:
2026-07-01 13:56:15 UTC
Tags:
ransomware
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Tags:
dropper shell sage
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Searching for synchronization primitives
Creating a file in the %temp% directory
Deleting a recently created file
Launching a service
Loading a suspicious library
Launching a process
Modifying a system file
Creating a file in the Windows subdirectories
Creating a file
Creating a process from a recently created file
Changing a file
Creating a process with a hidden window
DNS request
Connection attempt
Sending a custom TCP request
Enabling autorun by creating a file
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
adaptive-context advanced_installer anti-debug anti-vm base64 crypto downloader evasive expired-cert fingerprint fingerprint installer installer installer-heuristic lolbin microsoft_visual_cc msiexec packed reconnaissance runonce wiper
Verdict:
Malicious
Labled as:
Trojan.PowerShell.Agent
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-01T08:02:00Z UTC
Last seen:
2026-07-01T11:00:00Z UTC
Hits:
~100
Detections:
Trojan.Win32.PowerShell.opi PDM:Trojan.Win32.Generic Backdoor.Xkcp.TCP.ServerRequest Backdoor.Win32.GGCode.pc Backdoor.Agent.TCP.C&C Backdoor.Win32.Xkcp.a Backdoor.Win32.GGCode.sb
Score:
94%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Backdoor.Win32.GGCode
Threat name:
Win32.Trojan.Sonbokli
Status:
Malicious
First seen:
2026-07-01 09:13:10 UTC
File Type:
PE (Exe)
Extracted files:
867
AV detection:
4 of 36 (11.11%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
antigravitybackdoor
Similar samples:
+ 161 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
8/10
Tags:
adware defense_evasion discovery execution persistence privilege_escalation ransomware spyware trojan
Behaviour
Checks SCSI registry key(s)
Gathers network information
Modifies Internet Explorer settings
Modifies data under HKEY_USERS
Modifies registry class
Modifies system certificate store
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
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
Adds Run key to start application
Checks installed software on the system
Enumerates connected drives
Network Service Discovery
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unexpected DNS network traffic destination
Boot or Logon Autostart Execution: Active Setup
Command and Scripting Interpreter: PowerShell
Drops file in Drivers directory
Modifies Windows Firewall
Malware family:
ValleyRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | APT_Sandworm_ArguePatch_Apr_2022_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect ArguePatch loader used by Sandworm group for load CaddyWiper |
| Reference: | https://www.welivesecurity.com/2022/04/12/industroyer2-industroyer-reloaded/ |
| Rule name: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | FreddyBearDropper |
|---|---|
| Author: | Dwarozh Hoshiar |
| Description: | Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip. |
| Rule name: | GenericGh0st |
|---|---|
| Author: | Still |
| Rule name: | Gh0stKCP |
|---|---|
| Author: | Netresec |
| Description: | Detects HP-Socket ARQ and KCP implementations, which are used in Gh0stKCP. Forked from @stvemillertime's KCP catchall rule. |
| Reference: | https://netresec.com/?b=259a5af |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_ClearMyTracksByProcess |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables calling ClearMyTracksByProcess |
| Rule name: | malware_shellcode_hash |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect shellcode api hash value |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | meth_peb_parsing |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | telebot_framework |
|---|---|
| Author: | vietdx.mb |
| Rule name: | TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments |
| Reference: | https://cyfare.net/ |
| Rule name: | VECT_Ransomware |
|---|---|
| Author: | Mustafa Bakhit |
| Description: | Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments. |
| Rule name: | Windows_Generic_Threat_4b0b73ce |
|---|---|
| Author: | Elastic Security |
| Rule name: | WinosStager |
|---|---|
| Author: | YungBinary |
| Description: | https://www.esentire.com/blog/winos4-0-online-module-staging-component-used-in-cleversoar-campaign |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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