MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab. 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


Intelligence 13 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab
SHA3-384 hash: fc7b2a0916b5aecdc12f909c2b3706ca9271c3df52a1934840725ec9c1d3bbf8de82434f72d5aa6b0c27302562813965
SHA1 hash: a2634bc3f63241c85c0c2eb9f2bffcc496ee72af
MD5 hash: 89e11f8b8f81a0a111bc99ba631ca85d
humanhash: three-diet-jig-lemon
File name:点击安装中文语言包a.msi
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:4'710'400 bytes
First seen:2026-04-08 06:45:26 UTC
Last seen:2026-04-08 13:35:23 UTC
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 98304:rZrzi607pGXxse0JtevmB6ZkRdRg4Uag3LCl+Li4e4rS8:9vMmsze2Rdy4UaoCsLTS8
TLSH T1FC263356E1850329D273C2BA009B0DA82015BD8C8303C53B7979F5569B7A89DBEF3DED
TrID 88.4% (.MST) Windows SDK Setup Transform script (61000/1/5)
11.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter Ling
Tags:Gh0stRAT msi SilverFox ValleyRAT


Avatar
CNGaoLing
SilverFox & Gh0stRAT
IOC (IP 156.245.234.13)

Intelligence

File Origin
# of uploads :
2
# of downloads :
54
Origin country :
US US
Vendor Threat Intelligence
Malware configuration found for:
MSI
Details
MSI
an embedded setup program or component
Link:
https://research.acce.ciphertechsolutions.com/results/1945362b-f36e-41d9-8c48-3fe4bfc89468/
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/60791/
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69d53ee866ab6d001dcff494
Tags:
shellcode virus hype
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug CAB cmd crypto evasive installer installer lolbin opendir packed
Link:
https://www.filescan.io/uploads/69d5f990972c219c8d7d17d3/reports/e39d4878-e5d9-40e0-82e8-51c2c1f9f25c/overview
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab
Verdict:
Malicious
File Type:
msi
First seen:
2026-04-07T23:43:00Z UTC
Last seen:
2026-04-08T13:26:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Win32.Generic Trojan.Win32.Shelm.bbhr Trojan.MSIL.Quasar.sb Trojan.MSIL.Quasar.a Trojan-PSW.Win32.Stealer.sb Trojan.Win32.Shellcode.sb Trojan.Win32.Quasar.sb Trojan.PowerShell.Cobalt.sb Trojan-Spy.MSIL.Downeks.sb Trojan-PSW.MSIL.Virinom.sb Trojan.VBS.Agent.daa HEUR:Trojan-Dropper.OLE2.Agent.gen BSS:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab/results?tab=lookup
Score:
84%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab
Threat name:
Win32.Trojan.Qwexlafiba
Create hunting rule
Status:
Malicious
First seen:
2026-04-07 17:29:08 UTC
File Type:
Binary (Archive)
Extracted files:
5
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rm5et2ezgkt4g4oozkpmxrwacupdrxexygi7pifkskulvkfw5cvq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar execution persistence privilege_escalation ransomware spyware trojan
Link:
https://tria.ge/reports/260408-hjekcsbs7r/
Behaviour
Uses Task Scheduler COM API
Uses Volume Shadow Copy service COM API
Checks SCSI registry key(s)
Checks processor information in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Event Triggered Execution: Installer Packages
Drops file in Program Files directory
Drops file in Windows directory
Enumerates connected drives
Looks up external IP address via web service
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
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/8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab

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:CMD_Ping_Localhost
Create hunting rule
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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:detect_powershell
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
Rule name:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:Suspicious_Process
Create hunting rule
Author:Security Research Team
Description:Suspicious process creation
Rule name:Sus_All_Windows_PE_Malware
Create hunting rule
Author:DiegoAnalytics
Description:Detects Windows PE malware of all types, avoids non-executables like .html
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
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
Create hunting rule
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.

File information

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

Web download

ValleyRAT

Microsoft Software Installer (MSI) msi 8b3a49e89932a7c371ceca9ecbc6c0151e38dc97c191f7a0aa92a8baa8b6e8ab

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/60791/

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