MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 524b0b9f10daa60f347cf8f906fd79fa43855df1d5fef2b9a58a90d543c5fdf4. 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: 9

Intelligence 9 IOCs YARA 13 File information Comments

SHA256 hash:	524b0b9f10daa60f347cf8f906fd79fa43855df1d5fef2b9a58a90d543c5fdf4
SHA3-384 hash:	eb005af3c419f13ecadedfb22fabcbdfa785accc255c821a90cd4f29563f6d9888507262257baf56e9ca0ea485d1f1d5
SHA1 hash:	a64cebe20b41faf231b670ece77c8c52ae78a2aa
MD5 hash:	e578513353b52484d4c92ea4e8edfb02
humanhash:	video-delaware-artist-uncle
File name:	instapp.a.1.02.exe
Download:	download sample
Signature	ValleyRAT Create hunting rule
File size:	38'120'448 bytes
First seen:	2026-09-27 15:48:48 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	134463e32c3cbe702e5ab6a4147754d9 (7 x ValleyRAT)
ssdeep	98304:C8KAut6aEbMVTuQ2dCka+4Z7eSv5ogcPESa5OY/Y8onm:jKACqATn2s6SWg5cnm
TLSH	T1D1870946BB00DD83F5829134A8E6DF806B32FC728BB09B5336D96F1A2F5F1588DE1495
TrID	33.1% (.EXE) Win64 Executable (generic) (6522/11/2) 25.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 10.4% (.ICL) Windows Icons Library (generic) (2059/9) 10.3% (.EXE) OS/2 Executable (generic) (2029/13) 10.1% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
dhash icon	e4c0f0defdfc7818 (7 x ValleyRAT)
Reporter	Ling
Tags:	exe SilverFox Trojan/SilverFox.bm[lddel] ValleyRAT

CNGaoLing

instapp.a.1.02.exe

The sample is retrieved from "https://firpe.com.cn" / "https://www.firpeteam.com.cn" / "https://winpe-firpe.com.cn" / "https://www.firpe-cn.hl.cn" / "https://www.firpeteam.hl.cn" -> "https://www.oj44472.com/insdow92"

Trojan/SilverFox.bm[lddel]
IOC (laohwx.net) (kbbtah.net) (ybjyz0.oss-cn-beijing.aliyuncs.com) (mm2027.oss-cn-hangzhou.aliyuncs.com) (IP 103.71.48.92:17031)

Intelligence

File Origin

# of uploads :

# of downloads :

199

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

gh0st

ID:

File name:

exe

Verdict:

Malicious activity

Analysis date:

2026-09-27 15:57:48 UTC

Tags:

rat gh0st stego payload auto-reg auto-sch uac

Link:

https://app.any.run/tasks/f17aea6e-3569-43d4-8bcf-3432e298c88b

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

DNS request

Connection attempt

Sending a custom TCP request

Sending an HTTP GET request

Creating a file

Enabling the 'hidden' option for recently created files

Verdict:

Unknown

Threat level:

2.5/10

Confidence:

100%

Tags:

adaptive-context anti-debug fingerprint microsoft_visual_cc

Link:

https://www.filescan.io/uploads/6ab93afd289a09f5b0793df3/reports/897f939c-535f-4c89-ae72-48af7accf421/overview

Verdict:

Malicious

Labled as:

Yogi.Generic

Link:

https://www.hybrid-analysis.com/sample/524b0b9f10daa60f347cf8f906fd79fa43855df1d5fef2b9a58a90d543c5fdf4

Verdict:

Malicious

File Type:

exe x64

First seen:

2026-09-27T12:11:00Z UTC

Last seen:

2026-09-27T12:24:00Z UTC

Hits:

~10

Detections:

HEUR:Trojan-Dropper.Win32.Generic

Link:

https://opentip.kaspersky.com/524b0b9f10daa60f347cf8f906fd79fa43855df1d5fef2b9a58a90d543c5fdf4/results?tab=lookup

Score:

Verdict:

Benign

File Type:

Link:

https://malprob.io/report/524b0b9f10daa60f347cf8f906fd79fa43855df1d5fef2b9a58a90d543c5fdf4

Gathering data

Threat name:

Win64.Trojan.Yogi

Status:

Malicious

First seen:

2026-09-27 15:49:31 UTC

File Type:

PE+ (Exe)

Extracted files:

AV detection:

14 of 24 (58.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=kjfqxhyq3kta6nd47d4qn7lz7jbykxpr2x7pfonfrkinkq6f7x2a._file

Result

Malware family:

n/a

Score:

10/10

Tags:

defense_evasion discovery execution exploit persistence privilege_escalation trojan

Link:

https://tria.ge/reports/260927-s9ggra1dqa/

Behaviour

Uses Task Scheduler COM API

System policy modification

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: LoadsDriver

Suspicious behavior: EnumeratesProcesses

Scheduled Task/Job: Scheduled Task

Runs net.exe

Modifies Control Panel

Checks processor information in registry

System Location Discovery: System Language Discovery

Reads the TCP/IP host and domain name from the registry

Executes a command shell one-liner

Event Triggered Execution: Screensaver

Enumerates physical storage devices

Drops file in Program Files directory

Launches sc.exe

Drops file in System32 directory

Indicator Removal: Clear Persistence

Enumerates connected drives

Adds Run key to start application

Modifies file permissions

Loads dropped DLL

Executes dropped EXE

Disables service(s)

Checks computer location settings

Checks BIOS information in registry

Possible privilege escalation attempt

Modifies RDP port number used by Windows

Drops file in Drivers directory

Command and Scripting Interpreter: PowerShell

Windows security bypass

UAC bypass

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/524b0b9f10daa60f347cf8f906fd79fa43855df1d5fef2b9a58a90d543c5fdf4

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:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

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

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	GoBinTest Create hunting rule

Rule name:	golang Create hunting rule

Rule name:	golang_binary_string Create hunting rule
Description:	Golang strings present

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

Rule name:	identity_golang Create hunting rule
Author:	Eric Yocam
Description:	find Golang malware

Rule name:	INDICATOR_SUSPICIOUS_EXE_SandboxUserNames Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing possible sandbox analysis VM usernames

Rule name:	ProgramLanguage_Golang Create hunting rule
Author:	albertzsigovits
Description:	Application written in Golang programming language

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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

File information

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

Web download

ValleyRAT

exe 524b0b9f10daa60f347cf8f906fd79fa43855df1d5fef2b9a58a90d543c5fdf4

(this sample)

Delivery method

Distributed via web download

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